Vox Power VCCM600S Series User manual

VCCM600 Series
AC/DC conduction cooled configurable power supplies
User Manual
_____________________________________________________________________________________________________
DOC-MN-007-03 VCCM600 User Manual
Vox Power Limited | Unit 2, Red Cow Interchange Estate, Ballymount, ublin 22, 22 Y8H2, Ireland | T [phone] | www.vox-power.com
Cool it your way. Conduction | Con ection | Forced Air
4”x7”x1.61”
SMALL
600W
POWERFUL
SILENT
FAN-LESS
The VCCM600 series user manual has been prepared by our design team to assist qualified engineers in correctly
designing in the VCCM600 product into their application to achie e the best reliability and performance possible.
All specifications are belie ed to be correct at time of publishing. Vox Power Ltd reser es the right to make changes to any of its products and to change or impro e any part of the
specification, electrical or mechanical design or manufacturing process without notice. Vox Power Ltd does not assume any liability arising out of the use or application of any of its
products and of any information to the maximum extent permitted by law. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
document or by any products of Vox Power Ltd. VOX POWER LTD DISCLAIMS ALL WARRANTIES AND REPRESENTATIONS OF ANY KIND WHETHER EXPRESS OR IMPLIED, INCLUDING, BUT
NOT LIMITED TO, IMPLIED WARRANTIES OF SUITABILITY, FITNESS FOR PURPOSE, MERCHANTABILITY AND NONINFRINGEMENT.
Please consult your local distributor or Vox Power directly to ensure that you ha e the latest re ision before using the product and refer to the latest rele ant user manual for further
information relating to the use of the product. Vox Power Ltd products are not intended for use in connection with life support systems, human implantations, nuclear facilities or systems,
aircraft, spacecraft, military or na al missile, ground support or control equipment used for the purpose of guidance na igation or direction of any aircraft, spacecraft or military or na al
missile or any other application where product failure could lead to loss of life or catastrophic property damage. The user will hold Vox Power Ltd harmless from any loss, cost or damage
resulting from its breach of these pro isions.
VCCM600 Series O er iew
The VCCM600 series of conduction cooled configurable power platform deli ers a silent 600 Watts and up to 750 Watts of peak power for 5
seconds in a rugged 4” x 7” package and is the ultimate power solution for applications where reliability or audible noise are of concern. The
product combines the ad antages of a modular power supply with the high reliability of a fan-less architecture. Depending on your application,
the VCCM600 can be configured as a conduction, con ection or forced air cooled solution and this ersatility allows the unit to be seamlessly
integrated across a ast range of applications, which makes it perfect for standardising your power platform.
Designed with highest reliability and ersatility in mind, the VCCM600 is suitable for applications ranging from the most controlled en ironments
to the harshest conditions. Each configured modular solution can accommodate up to 4 isolated DC output modules which utilize 100% SMT
components for increased reliability. Standard features include full output oltage adjust range, externally controllable oltage and current and
series & paralleling of outputs. The unique design approach and heat dissipation techniques allows the unit to be mounted in irtually any
orientation gi ing system designers e en more flexibility. The series is appro ed to latest safety and EMC standards and features market leading
specifications and design in application support.

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DOC-MN-007-03 VCCM600 User Manual
Vox Power Limited | Unit 2, Red Cow Interchange Estate, Ballymount, ublin 22, 22 Y8H2, Ireland | T [phone] | www.vox-power.com
Contents
VCCM600 Series O er iew 1
Part Numbers and Ordering Information 3
Important installation information 4
Theory of Operation 5
Input Module Operation 6
Input Module Protections 7
Efficiency Performance 8
Power Ratings 9
System Cooling 10
Signalling 13
Output Module Operation (A, B, C & D) 15
Ad anced Output Module Features 18
Series Connected Outputs 22
Parallel Connected Outputs 23
Mechanical Dimensions and Mounting 26
Connector details 27
Safety 28
EMC Compliance 29
Reliability 31
Configuring Your VCCM Product 32
Accessories 37

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DOC-MN-007-03 VCCM600 User Manual
Vox Power Limited | Unit 2, Red Cow Interchange Estate, Ballymount, ublin 22, 22 Y8H2, Ireland | T [phone] | www.vox-power.com
Part Numbers and Ordering Information
INPUT MODULES
Input Module Details
VCCM600S 600 Watt Input Module with ITE Appro als (IEC60950 Edition 2)
VCCM600M 600 Watt Input Module with Medical Appro als (IEC60601 Edition 3 + IEC60601-1-2 Edition 4 EMC)
OUTPUT MODULES
Module Nominal oltage Rated current Rated Power Adjustment
range Load regulation Line regulation OVP
OP 0 Unused slots
OP A 5V 25A 125W 1.5V-7.5V ±50mV ±0.1%Vnom 9V
OP B 12V 15A 150W 4.5V-15V ±100mV ±0.1%Vnom 18V
OP C 24V 7.5A 150W 9V-30V ±150mV ±0.1%Vnom 36V
OP D 48V 3.5A 150W 18V-58V ±300mV ±0.1%Vnom 66V
PART NUMBERING SYSTEM
VCCM Input
Module
VCCM600 S - A B C D - 0 0 0 Factory use
Product Type
USE '0' for unused slots.
S - Standard
M - Medical
Slot 1 - Output #
Slot 4 - Output #
Slot 2 - Output #
Slot 3 - Output #
Contact your Distributor or Vox Power for special configuration requirements. The factory may allocate a 3-digit suffix to identify such requirements.

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DOC-MN-007-03 VCCM600 User Manual
Vox Power Limited | Unit 2, Red Cow Interchange Estate, Ballymount, ublin 22, 22 Y8H2, Ireland | T [phone] | www.vox-power.com
Important installation information
The VCCM600 series of configurable power supplies are intended for use within end customer applications which restrict access to un-authorized personnel. The
instructions in this manual and all warning labels on the product must be adhered to carefully.
SAFETY
The VCCM600S and VCCM600M series are designed in accordance with the rele ant safety requirements of UL60950-1, IEC/EN60950-1, UL60601-1, IEC/EN60601-
1, CSA22.2 no 601-1, Low oltage Directi e LVD 2014/35/EU and EMC directi e EMC 2014/30/EU.
All VCCM600 series power supplies must be installed correctly in a controlled en ironment which restricts access to any un-authorised personnel. Equipment and
system manufacturers must protect ser ice personnel against unintentional contact with the output terminals.
HAZZARDS
Dangerous oltages are present within the power supply. It should only be handled by qualified personnel when the power supply has been disconnected from
the mains supply oltage for more than 3 minutes.
External surfaces of the power supply may become extremely hot during and after operation. Appropriate care should be taken.
If series and/or parallel combinations of outputs exceed safe oltage and/or energy le els, the final equipment manufacturer must pro ide the appropriate
protection for both users and ser ice personnel.
DE-RATINGS
Ambient Temperature The input module power must be de-rated by 2.5%/°C abo e 50°C ambient up to a maximum ambient temperature of
70°C.
Baseplate Temperature The output module power and current must be de-rated by 2.5%/°C abo e 85°C baseplate up to a maximum baseplate
temperature of 105°C.
Input Voltage
The input module power must be de
-
rated by 5W/VRMS below120 VRMS (600W @ 120 VRMS, 450W @ 90 VRMS)
Remember to take the appropriate de-rating into consideration before specifying any VCCM600 power supply for an application. If in any doubt, please contact
Vox Power directly or your local Vox Power representati e.
HEALTH AND SAFETY
To comply with section 6 of the health and safety at work act, a label that is clearly isible to ser ice personnel must be placed on the final equipment. These
labels warn that surfaces of the power supply may be hot and should not be touched when the product is operating.
FUSING
The power supply has internal dual pole fusing. One fuse in each line.
Fuses should only be replaced by authorised personnel and to ensure continued protection against risk of fire, fuses must be replaced with the same type and
rating of fuse.
For DC operation, an appropriately rated DC fuse must be included in the end application.
SERVICING
The power supply contains no user ser iceable parts. Repairs must be carried out by authorised personnel only. Contact Vox Power for further information.
APPROVAL LIMITATIONS – NORTH AMERICA
When this product is used with 180VAC–253VAC mains where no neutral is present, connect the two li e wires to L (Li e) and N (Neutral) on the input connector.
COOLING
For proper operation of the power supply, the user must ensure sufficient cooling to maintain all component temperatures within specifications. A thorough
re iew of the user manual should be carried out for details of thermal performance.
EARTH TERMINAL MARKING
To comply with the requirements of UL60950-1, IEC/EN60950-1, CSA22.2 no. 60950-1, UL60601-1, IEC/EN60601-1, CSA22.2 no 601-1 where the incoming wiring
earth is intended for connection as the main protecti e earth conductor and where the terminals for such a connection is not supplied on a component or
subassembly, the user shall add an appropriate label displaying a protecti e earth symbol in accordance with 60417-2-IEC-5019 directly adjacent to the terminal.
The label should be durable and legible and should withstand the 15 second rub test as per UL60950-1 section 1.7.15.
WARRANTY
Contact your sales agent or Vox Power for product repairs. See Vox Power standard terms and conditions for warranty conditions.
PRODUCT LABELS
The external product label contains information rele ant to the power system. The label contains input oltage, maximum input current, input frequency,
maximum output power, fuse rating and type, serial number, appro als and product part number in form VCCM600x-yyyy-zzz.
VCCM OUTPUT MODULES
Each output module label contains information rele ant to that output. The label contains oltage adjustment range, maximum output current, serial number,
appro als and the part number in format OPx.
OTHER
 A label warning that external surfaces are hot during operation and that the unit should be allowed to cool down properly should be placed on the
unit where such a label is clearly isible.
 The VCCM600 series is designed to comply with EMC standards but it does not imply that the end system will comply.
 To prolong the life of the unit, use in dust free en ironment.
 Units can sometimes be damaged during transit. In the e ent of transit damage, DO NOT connect power to the unit. Contact your sales agent or Vox
Power.
 Always use adequately sized cables and ensure good crimp connections. Use cable supports to minimise stress on connectors.
 A oid excessi e shock or ibration.

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DOC-MN-007-03 VCCM600 User Manual
Vox Power Limited | Unit 2, Red Cow Interchange Estate, Ballymount, ublin 22, 22 Y8H2, Ireland | T [phone] | www.vox-power.com
Theory of Operation
The diagram below outlines the topology and major internal components of a fully assembled VCCM600 configurable power supply. Four output slots are
pro ided and can be populated by any combination of output modules . The remaining components in the block diagram are housed in the input and
transformer modules
.
The input module is responsible for recei ing the AC mains line oltage and con erting it to an appropriate DC oltage whilst pro iding protection from AC line
disturbances and pre enting excessi e EMI emissions and current harmonics. The integrated EMI filter attenuates high frequency current emissions to le els
below EN55022 class B. It also pro ides dual pole fusing, one fuse in each conductor and protection from line disturbances as outlined in EN61000.
Inrush current is controlled by a resisti e element upon initial connection to the AC line. Once the internal capacitances ha e been charged, the resisti e element
is bypassed to reduce losses.
Acti e Power Factor Correction (PFC) is used to ensure an accurate input current wa eform with extremely low harmonic content, exceeding the requirements of
EN61000. This stage also pro ides acti e input current limiting which pre ents o erloading of the input stage while maintaining high power factor.
The output of the PFC stage charges the hold-up electrolytic capacitors which store enough energy to allow the VCCM600 configured product to continue
operating during minor line disturbances. Long lifetime and high temperature capacitors are used which ensures extended lifetime and product reliability.
A highly efficient zero oltage switching circuit is used to dri e the isolated transformer from the hold-up capacitors. The output modules connect to the
transformer secondary and pro ide safe isolated power to a high performance synchronous rectifier power con erter. This power con erter is controlled using
the latest analog control technology to produce superior output performance in a miniature size.

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DOC-MN-007-03 VCCM600 User Manual
Vox Power Limited | Unit 2, Red Cow Interchange Estate, Ballymount, ublin 22, 22 Y8H2, Ireland | T [phone] | www.vox-power.com
Input Module Operation
Startup & Shut Down
The VCCM input module operates from a uni ersal input oltage range and starts automatically upon application of adequate AC mains oltage (>84Vrms). After
a short delay, the global 5V bias supply starts and the ACOK signal goes high to indicate that the mains oltage is present and input stage is operating correctly.
Once the ACOK signal is high, the output modules turn on and deli er power to the application loads. The power good signals will indicate that the output
oltages are within specification. The diagram below shows the normal start up/shut down sequence and gi es typical timings.
Typical timing alues at 120Vac 600W 25°C: t
1
 ≈500 ms, t
2
 ≈170 ms, t
3
 ≈ 1500 ms, t
4
 ≥15 ms, t
5
 ≥5ms (minimum), t
6
 ≥100 ms
When the AC mains oltage is remo ed, the internal hold-up capacitors will supply power to the load for typically 20 ms (t
4
+t
5
) at maximum power. The ACOK
signal will go low at least 5ms before the output oltages fall below the power good threshold le el. This allows the application to prepare for the impending loss
of power. The 5V bias supply will remain on for typically 100ms, after the output modules ha e turned off.
*Output modules that are adjusted abo e nominal oltage, will ha e reduced ACOK warning time.
Standby control
The unit may be completely shut down by shorting (<10Ω) the terminals of J2. The unit will restart once the short is released.
The control uses transformer coupled pluses to detect the short and is fully isolated to 2xMOPP. The oltage present on J2 ranges from +3.3V to -0.8V with a peak
current of 15mA. In acti e mode, the control is pulsed e ery 1.3mS while in standby mode the control is pulsed e ery 400mS. A signal MOSFET or switch may be
used to acti ate this control. This shutdown will not generate the ACOK warning signal.
Programmable start-up state
The start-up and standby control logic can be in erted by shorting J11 with a jumper. The functionality is shown in the table below.
J11
J2
Operational mode
Comments
Open Open NORMAL Default. Unit will start into NORMAL mode
Open
Closed
STANDBY
<1W power consumption
Closed Open STANDBY Unit will start into STANDBY mode. <1W power consumption
Closed Closed NORMAL
Note
-
J12 is reser ed for internal use. Do
not short J12
J11 LOCATION
J2 LOCATION
-
+
J11
J12

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DOC-MN-007-03 VCCM600 User Manual
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Hold-up
For short line distubances (<20ms), the output oltages will not be affected*. Howe er, the ACOK signal may still go low to warn that there is an impending loss
of output power. The ACOK signal will return to the high state once the unit has reco ered from the disturbance.
*Output modules that are adjusted abo e the hold-up oltage (as detailed in their respecti e datasheets), may experience a dip in oltage.
No Load Power/Standby Power Consumption
The no-load power consumption of the VCCM600 series PSU is extremely low when compared to similar configurable power supplies. With the output modules
enabled the unit typically only requires less than 15W with no output load. To reduce the no-load power further the outputs can be disabled using the inhibit
pins. With the outputs disabled the unit typically requires less than 10W. When the unit is in the standby (latched off) state, the power consumption is less than
1W.
Peak Power capability
The input module can pro ide a peak output power of up to 750W for a period of up to 5 seconds, pro ided the input current remains below the o er current
protection threshold. Peaks of power lower than 750W can be supported for longer times pro ided the excess watt-seconds are equi alent. For example, 750W
peak for 5 seconds is an excess power of 150W*5s = 750Ws. 650W can be supported for 750Ws/50W = 15s. When using peak power capability, the user must
ensure the a erage power remains within ratings. Note that input module de-ratings apply to both rated power and peak power.
Input Module Protections
O er current protection (OCP)
The input module is protected from excessi e input current by means of an o er current protection circuit which limits the input current to approximately 7Arms.
If the OCP threshold is exceeded the unit may shut down and attempt to automatically restart. This shutdown will generate the usual ACOK warning.
Under oltage protection (UVP) & Brown-Out Protection (BOP)
The input module is protected from excessi ely low input oltages by under oltage and brown out protection circuits that senses the input line oltage. The
under- oltage protection circuit maintains the unit in standby mode until the input oltage rises abo e the UVP threshold as detailed in the datasheet. Once the
unit is acti e, the brown out protection monitors the input oltage and shuts down the unit when input oltage goes below approximately 60Vrms. This
shutdown will generate the usual ACOK warning. The unit will restart once the input oltage increases abo e the UVP threshold.
O er Temperature Protection (OTP)
The input module is protected from excessi e temperatures by means of arious internal temperature sensors. If temperature thresholds are exceeded the entire
unit may latch off, with no ACOK warning. To re-enable the unit, it must be allowed to cool, then either disconnect the AC mains for approximately 20 seconds, or
toggle the standby control on J2.
O er Power Protection (OPP)
The input module is protected from excessi e power by means of an o er power protection circuit. Should the rated power be exceeded the unit will shut down
and attempt to reco er automatically. This shutdown will not generate the usual ACOK warning.

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DOC-MN-007-03 VCCM600 User Manual
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Efficiency Performance
The efficiency of the configured VCCM600 product is dependent on parameters such as input line oltage, load le el and on the combination of output modules.
The plots below show typical efficiencies of a VCCM600 product fitted with all modules A, B, C or D. The plots co er the full load and line oltage range. All
modules are adjusted to nominal oltages and are equally loaded.
An estimate of the o erall efficiency for any configured system may be obtained from these graphs.
0.73
0.74
0.75
0.76
0.77
0.78
0.79
0.80
0.81
0.82
0.83
0.84
0.85
0.86
0.87
0.88
0.89
0.90
0.91
0 50 100 150 200 250 300 350 400 450 500 550 600
Efficiency
Output Power (Watts)
Typical Load Efficiency at 120VRM input voltage
OPA OPB OPC OPD
0.73
0.74
0.75
0.76
0.77
0.78
0.79
0.80
0.81
0.82
0.83
0.84
0.85
0.86
0.87
0.88
0.89
0.90
0.91
0 50 100 150 200 250 300 350 400 450 500 550 600
Efficiency
Output Power (Watts)
Typical Load Efficiency at 220VRM input voltage
OPA OPB OPC OPD
0.73
0.74
0.75
0.76
0.77
0.78
0.79
0.80
0.81
0.82
0.83
0.84
0.85
0.86
0.87
0.88
0.89
0.90
0.91
0 50 100 150 200 250 300 350 400 450
Efficiency
Output Power (Watts)
Typical Load Efficiency at 85VRM input voltage
OPA OPB OPC OPD
0.73
0.74
0.75
0.76
0.77
0.78
0.79
0.80
0.81
0.82
0.83
0.84
0.85
0.86
0.87
0.88
0.89
0.90
0.91
80 100 120 140 160 180 200 220 240 260
Efficiency
InputVoltage (VRM )
Typical Line Efficiency at maximum rated power
OPA OPB OPC OPD

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DOC-MN-007-03 VCCM600 User Manual
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Power Ratings
VCCM600 series products must always be operated within stated operating limits. Equipment manufacturers and other users must take the appropriate de-rating
into account when specifying a unit for the intended application. If in doubt, contact your sales representati e or Vox Power for assistance.
There are three main de-ratings for the VCCM600 series of configurable power supplies when used in a conduction cooled application,
1. Ambient air temperature (1)
Ambient air temperature de-ratings apply to the input module rated and peak
power only. (3)
The input module must be de-rated by 2.5% per degree Celsius abo e 50°C, up to
a maximum of 70°C.
2. Baseplate temperature (2)
Baseplate temperature de-ratings apply to output module rated power, peak
power and rated current, and bias supply power.
The output module parameters must be de-rated by 2.5% per degree Celsius
abo e 85°C, up to a maximum of 105°C.
3. Input line oltage
Input line oltage de-ratings apply to the rated power and peak power for both
the input module and output module. (3)
All parameters must be de-rated by 2.5% for e ery 3 olts below 120Vrms, down
to a minimum of 85Vrms.
Notes:
1. Ambient air temperature is the air temperature immediately surrounding the PSU.
2. Baseplate temperature is measured at baseplate temperature sensing location TS1.
3. A normalized alue of 1 is equi alent to 100%.
4. Input line oltage deratings are cumulati e with temperature de ratings.
Examples of power ratings calculation for arious input oltages, ambient temperatures and baseplate temperatures
1 2 3 4 5 6 7
VIN (VRMS) 120 85 85 120 120 100 120
Normalised V
IN
Rating [A]
1
0.708
0.708
1
1
0.833
1
TAMBIENT (⁰C) 70 50 70 50 60 60 50
Normalised TA MBIENT Rating [B] 0.5 1 0.5 1 0.75 0.75 1
TBASE (⁰C) 85 85 85 95 105 95 105
Normalised TBASE Rating [C] 1 1 1 0.75 0.5 0.75 0.5
Normalised Total input rating [A*B = D] 0.5 0.708 0.354 1 0.75 0.624 1
Normalised Total output rating [A*C = E] 1 0.708 0.708 0.75 0.5 0.624 0.5
Input module PRATED/PEAK [600W/750W*D] 300/375 424.8/531 212.4/265.5 600/750 450/562.5 374.4/468 600/750
Bias supply power [5W*C]
5
5
5
3.75
2.5
3.75
2.5
OPA P
RATED/PEAK
[
125W
/187.5W
*E]
125/187.5
88.5/132.75
88.5/132.75
93.75/140.625
62.5/93.75
78/117
62.5/93.75
OPA IRATED [25A*C] 25 25 25 18.75 12.5 18.75 12.5
OPB PRATED/PEAK [150W/225W*E] 150/225 106.2/159.3 106.2/159.3 112.5/168.75 75/112.5 93.6/140.4 75/112.5
OPB IRATED [15A*C] 15 15 15 11.25 7.5 11.25 7.5
OPC PRATED/PEAK [150W/225W*E] 150/225 106.2/159.3 106.2/159.3 112.5/168.75 75/112.5 93.6/140.4 75/112.5
OPC
I
RATED
[7.5A*C]
7.5
7.5
7.5
5.625
3.75
5.625
3.75
OPD
P
RATED/PEAK
[150W
/217.5W
*E]
150
/217.5
106.2
/154
106.2
/154
112.5
/163.125
75
/108.75
93.6
/135.72
75
/108.75
OPD IRATED [3.75A*C] 3.75 3.75 3.75 2.8125 1.875 2.8125 1.875
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
-40 -30 -20 -10 0 10 20 30 40 50 60 70
Normalised output power rating
Ambient Temperature (Celcius)
Ambient Temperature Derating
erate at 2.5% per degree celcius
above 50 degree celcius
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
80 100 120 140 160 180 200 220 240 260 2 80
Normalised Output Power rating
Input Voltage (RM )
Input Line voltage Derating
erate at 2.5% per every
3 volts below 120Vrms
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
-40 -30 -20 -10 0 10 20 30 40 50 60 70 8 0 90 100 110
Normalised Power & Current Rating
Baseplate Temperature (Celcius)
Temperature Derating
erate at 2.5% per degree celcius
above 85 degree celcius

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DOC-MN-007-03 VCCM600 User Manual
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System Cooling
The power ratings shown in the pre ious section are for conduction cooling, howe er the unit may be operated with forced air cooling, con ection cooling or
combinations of all three. To assist in specifying the product for these applications, the typical thermal performance has been characterised under controlled
conditions. The ratings achie ed are based on maintaining the baseplate temperature within the conduction cooled ratings specified on page 9.
CONVECTION PERFORMANCE
Natural Con ection, No Heatsink, Free Air, Mounting Orientations A/B/C/D/E/F
CONVECTION PERFORMANCE WITH HEATSINK (1)
Natural Con ection, With Heatsink, Free Air, Mounting Orientations A/B/C/D/E/F
Orientation definitions
A
B
C
D
E
F
Orientation
definitions
Notes
1. Standard Vox heatsinks type 1 and type 2 used. Type 1 used for mounting orientations A, B, E and F. Type 2 used for mounting orientations A, B, C and D.
0
50
100
150
200
250
300
350
400
450
500
550
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Pout
Ambient Temperature
OPA 120Vin, 4x5Vout
A B C EF
0
50
100
150
200
250
300
350
400
450
500
550
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Pout
Ambient Temperature
OPA 220Vin, 4x5Vout
A B C EF
0
50
100
150
200
250
300
350
400
450
500
550
600
650
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Pout
Ambient Temperature
OPB/C/ 120Vin, 4x10/20/40Vout
A B C EF
0
50
100
150
200
250
300
350
400
450
500
550
600
650
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Pout
Ambient Temperature
OPB/C/ 220Vin, 4x10/20/40Vout
A B C EF
0
50
100
150
200
250
300
350
400
450
500
550
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Pout
Ambient Temperature
OPA 120Vin, 4x5Vout
A B C EF
0
50
100
150
200
250
300
350
400
450
500
550
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Pout
Ambient Temperature
OPA 220Vin, 4x5Vout
A B C EF
0
50
100
150
200
250
300
350
400
450
500
550
600
650
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Pout
Ambient Temperature
OPB/C/ 120Vin, 4x10/20/40Vout
A B C EF
0
50
100
150
200
250
300
350
400
450
500
550
600
650
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Pout
Ambient Temperature
OPB/C/ 220Vin, 4x10/20/40Vout
A B C EF

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DOC-MN-007-03 VCCM600 User Manual
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FORCED AIR PERFORMANCE
No Heatsink, Air Direction X or Y at 2MS-1/1.5MS-1/1MS-1/0.5MS-1
FORCED AIR PERFORMANCE WITH HEATSINK (2)
With Heatsink, Air Direction X or Y at 2MS-1/1.5MS-1/1MS-1/0.5MS-1
Airflow
definitions
X
Z
Notes
1. Each 0.5MS-1 is approximately 100LFM. Eg. 2MS-1 ≈ 400LFM, 1.5MS-1 ≈ 300LFM etc.
2.
Standard Vox heatsinks type 1 and type 2 used. Type 1 used for
airflow direction X
. Type 2 used for
airflow direction Y
.
The ratings pro ided abo e are for guidance only and all VCCM600 configured solutions must be e aluated in the end application to ensure the conditions set
out in the power ratings section are met.
0
50
100
150
200
250
300
350
400
450
500
550
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Pout
Ambient Temperature
OPA 120Vin, 4x5Vout
2MS-1 1.5MS-1 1MS-1 0.5MS-1
0
50
100
150
200
250
300
350
400
450
500
550
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Pout
Ambient Temperature
OPA 220Vin, 4x5Vout
2MS-1 1.5MS-1 1MS-1 0.5MS-1
0
50
100
150
200
250
300
350
400
450
500
550
600
650
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Pout
Ambient Temperature
OPB/C/ 120Vin, 4x10/20/40Vout
2MS-1 1.5MS-1 1MS-1 0.5MS-1
0
50
100
150
200
250
300
350
400
450
500
550
600
650
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Pout
Ambient Temperature
OPB/C/ 220Vin, 4x10/20/40Vout
2MS-1 1.5MS-1 1MS-1 0.5MS-1
0
50
100
150
200
250
300
350
400
450
500
550
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Pout
Ambient Temperature
OPA 120Vin, 4x5Vout
2MS-1 1.5MS-1 1MS-1 0.5MS-1
0
50
100
150
200
250
300
350
400
450
500
550
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Pout
Ambient Temperature
OPA 220Vin, 4x5Vout
2MS-1 1.5MS-1 1MS-1 0.5MS-1
0
50
100
150
200
250
300
350
400
450
500
550
600
650
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Pout
Ambient Temperature
OPB/C/ 120Vin, 4x10/20/40Vout
2MS-1 1.5MS-1 1MS-1 0.5MS-1
0
50
100
150
200
250
300
350
400
450
500
550
600
650
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
Pout
Ambient Temperature
OPB/C/ 220Vin, 4x10/20/40Vout
2MS-1 1.5MS-1 1MS-1 0.5MS-1

12 | P a g e
DOC-MN-007-03 VCCM600 User Manual
Vox Power Limited | Unit 2, Red Cow Interchange Estate, Ballymount, ublin 22, 22 Y8H2, Ireland | T [phone] | www.vox-power.com
Specifying the VCCM600 product for con ection or forced air cooling
To specify a VCCM600 series product for an end application, the required output power, minimum input line oltage, maximum ambient, mounting orientation
and air flow rate (if applicable) should be determined. Check the requirements against the closest characteristic plot from the tables abo e to ensure ratings can
be achie ed. Be conser ati e when specifying the product as con ection and forced air cooling can be highly dependent on the end application enclosure and
power supply mounting. The estimated performance must be erified in the end application and temperatures may exceed predicted le els. It is also important
to note that ambient temperature refers to the ambient temperature immediately surrounding the PSU. If the PSU is mounted within an enclosure the enclosure
ambient temperature is likely to be higher than the external air ambient temperature.
E aluating the VCCM600 product in the end application
To ensure the product is operating within its ratings in the end application the following procedure should be performed during the design stage.
1. Install a thermocouple in position TS1 of the product. (See Mechanical dimensions and mounting for details.) The thermocouple wire should exit on
the top side between slots 2 and 3. The bottom side should be flush for heatsink mounting if necessary. Glue should be used to hold the
thermocouple in place.
2. Setup the application in worst case conditions, considering Input line oltage, Output power, ambient temperature, airflow and cooling restrictions.
3. Power the system and monitor the baseplate temperature until it reaches steady state.
4. Ensure that under worst case conditions, the baseplate temperature cannot exceed the rated temperature as outlined in the power ratings section of
this manual.
If a co er is placed o er the primary components, then the following component temperatures must also be measured to ensure they are below the maximum
specified temperatures.
Description Reference Maximum allowed temperature Drawing
Fuse FS1, FS2 125°C
Electrolytic capacitors C12 105°C
Inductors L1, L2, L3, L5 130°C
Other capacitors C1, C4 110°C
If excessi e temperatures are measured during this e aluation, then one or more of the following remedies may impro e thermal performance.
 Increase heatsink size
 Increase airflow rate
 Impro e air intake & outlet
 Reduce power requirement
Using the internal temperature sensor to control external application cooling
An internal temperature sensor T
SNS
is a ailable on J3 pin 9 (See page 14 for details). The output oltage of this sensor gi es a measurement of the internal
transformer temperature and can be used to control external cooling systems or to pro ide a warning of impending o er temperature protection.
The internal temperature (T
SNS
) should ne er exceed 120⁰C (2.74V), howe er, system reliability will be maximised if the PSU temperature is maintained as low as
possible in any gi en application.

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DOC-MN-007-03 VCCM600 User Manual
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Signalling
Global Signals
To reduce cabling in the end system, all major input and output signals and the global 5V bias supply are wired to a single signals circuit that is accessed through
connector J3 on the transformer module as shown in the diagram below.
J3 – Global Signals
Pin Name Description
1 PG4 Slot 4 Power Good
2 INH4 Slot 4 Inhibit
3 PG3 Slot 3 Power Good
4 INH3 Slot 3 Inhibit
5 PG2 Slot 2 Power Good
6 INH2 Slot 2 Inhibit
7 PG1 Slot 1 Power Good
8 INH1 Slot 1 Inhibit
9 T
SNS
Temperature sense
10 ACOK AC mains signal
11 +5V 5V Bias supply
12 COM Common
All the signals are referenced to the bias supply common rail (COM) and external control and/or monitoring circuits can be easily powered and interfaced to the
PSU through this connector. The entire signals circuit is fully medically isolated and can be considered a SELV output. The table below lists the isolation oltages.
Signals isolation oltages
Signals to Input 4000 V
AC
Signals to Chassis 500 V
DC
Signals to Output 500 V
DC
Bias Supply (+5V [Power])
The VCCM600 series has one isolated bias supply located on the transformer module (J3) beside slot 4. The output side bias supply generates 5V and is rated up
to 1A. The supply is a ailable whene er the AC mains oltage is connected and the input module is operating correctly. A shutdown through the standby control
on J2 or any of the following abnormal conditions will disable the 5V bias supply:
 O er temperature of any part of the unit
 O er oltage on any output module
 Internal o er current (de ice failure)
AC Mains Signal (ACOK [Output])
An ACOK signal is pro ided to indicate to the user that the AC mains oltage is applied and the input module is operating correctly. The output signal is dri en
from an internal operational amplifier. Under normal operating conditions this signal gi es a warning of 5ms before the output oltage falls below the power
good threshold. A shutdown through the standby control on J2 or any of the following abnormal conditions may cause the unit to turn off without the minimum
5mS ACOK warning:
 O er temperature of any part of the unit
 O er oltage on any output module
 Internal o er current (de ice failure)
*Output modules that are adjusted abo e nominal oltage, will ha e reduced ACOK warning time.
1
2
1
1
1
2

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DOC-MN-007-03 VCCM600 User Manual
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Power Good Signals (PG1-PG4 [Output])
Each output module pro ides a power good (PG) signal to indicate when the output oltage is abo e approximately 90% of the pre-set oltage for that module.
Each PG signal on an output module is internally connected through an opto-isolator to the
signals circuit, which pro ides and open collector output, as shown.
The LED on the front of each module gi es a isual confirmation of the PG status.
Note that remote adjustments of the output oltage using the V
CONTROL
and I
CONTROL
pins do
not change the PG signal threshold. The PG threshold is always approximately 90% of the
oltage set with the manual potentiometer.
Output Inhibits (INH1-INH4 [Input])
The signals circuit pro ides an inhibit input to disable each output module indi idually. Each inhibit input is internally connected through an opto-isolator to the
respecti e output modules. The basic internal electrical circuit and timing diagrams are shown below.
Internal circuit Timing: Typically, t
OFF
= 100 μs and t
ON
= 8 ms.
Internal Temperature sensor (T
SNS
[Output])
An internal temperature sensor is embedded in the transformer module. The output oltage of this sensor gi es a measurement of the internal transformer
temperature and can be used to control external cooling systems or to pro ide a warning of impending o er temperature protection. The sensor output oltage
is related to temperature as follows,
V = 0.4 + 0.0195*T
The sensor will accurately measure temperatures in the range -10⁰C to +125⁰C.
The internal temperature should ne er exceed 120⁰C (2.74V)
-20
0
20
40
60
80
100
120
0 0.5 1 1.5 2 2.5
T
SNS
output voltage Vs Internal Temperature

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DOC-MN-007-03 VCCM600 User Manual
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Output Module Operation (A, B, C & D)
Power Profile
The power profile diagram below is a oltage/current plot that together with the associated table pro ides details of the main features of the currently a ailable
output modules.
Parameter OPA OPB OPC OPD
V
NOM
(V) 5 12 24 48
V
MIN
(V) 1.5 4.5 9 18
V
MAX
(V) 7.5 15 30 58
V
OVP
(V) 9.5 17 32 66
I
RATED
(A) 25 15 7.5 3.75
I
OCP
(A) 27.5 16.5 8.25 4.125
V
SCP
(V) 1 2 4 4
I
SCP
(A) 22 13.2 6.6 3.3
P
RATED
(W) 125 150 150 150
P
PEAK
(W) 187.5 225 225 217.5
Output Voltage Adjustment
Each output can be adjusted within the range as described in the table abo e or in the datasheet. Voltage adjustment can be achie ed by two methods;
1. Manual potentiometer adjustment
Using the manual adjust potentiometer (located beside the “Power Good” indicator on the top of each output module), the preset output oltage (V
SET
) of each
output module is adjustable o er the entire range of V
MIN
to V
MAX
as specified in the power profile table abo e. A clockwise rotation of the potentiometer results in
an increase of the output oltage while an anti-clockwise rotation results in a decrease of the output oltage.
2. Remote Voltage Programming
Using remote oltage programming, the output oltage may be adjusted beyond the V
MIN
and V
MAX
range specified in the power profile table abo e. Howe er,
certain precautions must be taken to ensure correct operation. Please see the “Ad anced output module features” section for more details.
O er Voltage Protection (OVP)
In the e ent of an output module fault, the modules are protected against excessi e output oltages. This is implemented as a fixed oltage threshold V
OVP
, in the
table abo e. If the output oltage exceeds this threshold, all outputs will be disabled temporarily. If the fault persists after 20mS the entire unit will be latched off,
otherwise the outputs will auto reco er. To resume operation of a latched unit, disconnect the AC input oltage for 5 seconds or toggle the standby control on
J2. Note that no warning is gi en on the AC_OK signal for faults of this type.
O er Current & Short Circuit Protection (OCP & SCP)
For increased safety and reliability all output modules in the VCCM series ha e o er current and short circuit protection. The o er current threshold is typically set
at 115% of the rated current and has a constant current, straight line characteristic that reduces the output oltage as the load resistance decreases. If the output
oltages falls below the short circuit oltage threshold (V
SCP
) the module enters short circuit protection mode. In this mode the output module uses a hiccup
scheme to reduce system losses and potential damage. When in this mode, the output will be enabled for approximately 3% of the time, disabled for 97% and
will attempt to restart at approximately 125 ms inter als. The module remains in this state until the short circuit condition is remo ed, at which point normal
operation resumes.

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DOC-MN-007-03 VCCM600 User Manual
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Re erse Current Protection (RCP)
The standard output modules use synchronous rectification in the output stages to achie e high efficiency and as a result the outputs can both source and sink
current. The sink current is internally limited to approximately -6% of the maximum rated current. Howe er, in applications where the output modules are
connected to external power sources such as batteries or other power supplies certain precautions must be obser ed to pre ent damage to the unit.
The outputs should ne er be directly connected to to external power sources without some form of re erse current protection such as an external diode or
controlled mosfet. If protection is not used, large re erse currents which will ultimately result in damage to the unit will occur, especially when the AC mains is
disconnected.
Output Module A erage and Peak Power
All modules ha e an a erage and peak power rating. The a erage power of each unit must at all times remain below it’s specified limit. Howe er, each output can
deli er up to 150% of it’s a erage power rating for a maximum of 5 seconds at 50% duty cycle, subject to the current limit not being exceeded and subject to the
o erall a erage power drawn being less than the specified a erage power rating (including any input derating due to temperature or line oltage). The a ailable
peak power is a function of the output oltage and maximum current for each module. Full peak power is only possible when the output oltage is adjusted to
V
MAX
and the maximum current is drawn from the module. Note that both a erage and peak power ratings are subject to the same temperature derating as the
input module (derate by 2.5% per °C abo e 50°C), but are not subject to any line derating.
Start-up & Shut Down
All outputs are designed to ha e a regulated monotonic start-up with a rise time of
approximately 3ms as shown in the diagram right. The power good signal will not assert until
the oltage exceeds the power good threshold (≈90%).
Where multiple output modules are used, the default start up scheme is ratio-metric with all
outputs starting at the same time as shown in the diagram right. External control circuits may
be used to implement tracking or sequenced start up if necessary.
The outputs are not designed to start into pre-biased loads and may discharge any externally
capacitance before beginning to ramp the output oltage up in the normal way.
At shutdown, the outputs enter a high impedance state. Where no external load is present it
may take some time for the oltage to decay. When dri ing inducti e loads, care must be taken
to limit the oltage at the output terminals to pre ent damage to the unit.
Synchronisation
All output modules in the same product are synchronised. The typical operating frequency is
260kHz and paralleled or series connected units will not produce ripple beat frequencies.
External capacitance
All outputs can support a large external capacitance as detailed in the table shown.
The capacitances specified ensure monotonic start-up with rated load applied.
Larger capacitances can be applied for lower load currents.
OP
C
EXT_MAX
A
12mF
B 4mF
C
1mF
D 500uF

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DOC-MN-007-03 VCCM600 User Manual
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Ripple and Noise
The ripple and noise figures stated in the datasheet are defined based on a standard measuring method. To obtain the same results the same test setup must be
used and care must be taken to eliminate any parasitic noise pickup. The diagram below shows details of the setup and sources of noise pickup.
O er Temperature Protection (OTP)
Each output module is protected against excessi e temperatures. In the e ent of an internal temperature exceeding safe le els the output module will shut off. If
the temperature reduces the output module will automatically reco er. Should the temperature continue to rise a second o er temperature circuit will shut
down the input module and all outputs. To resume operation of the unit, disconnect the AC input oltage for 20 seconds then reconnect. If all temperatures are
within specifications the unit will restart. Note that no warning is gi en on the AC_OK signal for faults of this type.
Transient Response
The VCCM output modules ha e been especially designed to ha e high reliability. To achie e this all electrolytic capacitors ha e been eliminated from the
design. As a result of this, high dynamic load transients can cause relati ely high oltage de iations at the output and although the outputs ha e a ery high loop
bandwidth with typical reco ery times of less than 100μs, the oltage de iations may still be excessi e for some applications.
An example application is detailed in the diagram below and shows typical responses at the terminals of the output module and at the load. Notice that the
oltage de iation due to cable inductance exceeds the module response and hence a capacitor located at the module terminals will ha e little effect at the load.
The optimum solution is to locate a low impedance electrolytic capacitor at the load which will eliminate the inducti e cable drop and reduce the typical oltage
de iation at the module.

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DOC-MN-007-03 VCCM600 User Manual
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Ad anced Output Module Features
Remote Voltage Programming (External Voltage Control)
The output oltage of the module can be adjusted using an external oltage source connected between the COM and VCONTROL pins on the signals connector J4
as shown below.
In this configuration the output oltage will follow the typical equation below,
VO = VSET((5-VCONTROL) / 3.8), where VSET is the manual preset oltage of the module.
Equi alent internal circuit
Control function
The output oltage can be controlled from 0% to 131.5% of the preset oltage using this control method. Howe er, care must be taken to ensure the output
oltage does not exceeed the OVP le el, as this will trigger OVP protection.
Remote adjustment of the output oltage using the VCONTROL pin does not affect the preset power good threshold. Hence, remotely adjusting the output oltage
below 0.9*Vset will cause the power good signal to go low.
Where tight oltage adjustment tolerances are required, it is recommended to use external circuitry to pro ide closed loop control of the VCONTROL pin.

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Remote Current Programming (External Voltage Control)
The output current limit of the module can be reduced using an external oltage source connected between the COM and ICONTROL pins on the signals connector
as shown below. In practice this also means that the output can be used as a modulated or constant current source.
Equi alent internal circuit
Control function
In the diagram abo e, Vi_out is an internal oltage source that is proportional to the internal inductor current and approximates the equation,
VI_OUT = 4*IOUT/IRATED, where Irated is the maximum rated current for the module.
In this configuration the output current limit will approximate the following equation,
ILIMIT = IRATED*VCTRL/4, where IRATED is the maximum rated current for the module.
It is not possible to increase the maximum current limit of the module, and control oltages exceeding 4.6V will ha e no effect on the current limit.
When using an output module as a modulated current source, the output oltage should be manually adjusted to the maximum that will be required by the
application and this will be the upper oltage limit. Once the load is connected, the output current can then be modulated by applying a control oltage as
described abo e.
Note that the power-good threshold le el is fixed and defined by the manually preset oltage. Hence, while the output module is limiting or modulating the
output current the PG signal may go low.
Where tight current adjustment tolerances are required, it is recommended to use external circuitry to pro ide closed loop control of the ICONTROL pin.

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Output Current Measurement
The output current of the module can be measured using the ICONTROL signal. If this pin is not loaded its output oltage will follow the typical equation,
VI_OUT = 4*IOUT/IRATED, where IRATED is the maximum rated current for the module.
Note that the ICONTROL output oltage is representati e of the internal inductor current not the actual load current. Howe er, this will only ha e an influence
during dynamic e ents. It is recommended to add an external buffer amplifier (as shown below) when using the ICONTROL signal to measure the output current as
loading the ICONTROL signal, e en with microamps can cause the current limit to be reduced. If it is required to measure the output current and adjust the output
current limit simultaneously, this can be achie ed by using a clamp circuit instead of a oltage source to adjust the current limit, while continuing to use an
amplifier to measure the output current. An example circuit is shown below. In this case VCONTROL will control the current limit while the buffered ICONTROL signal will
pro ide a measurement of the output current.
Measuring output current
Measuring & controlling output current