VICOR MicroPAC User manual

vicorpower.com Applications Engineering: 800 927.9474 Page 1
Westcor
MicroPAC
USER GUIDE | UG:102
March 2013
Before Using the MicroPAC Power Supply
Be sure to read this design guide manual thoroughly before using this product.
Pay attention to all cautions and warnings.
Incorrect usage could lead to an electrical shock, damage to the unit or a fire hazard.
Warning
nDo not operate the without a secure protective earth (PE) lead
connected to the input power connector.
nDo not operate the MicroPAC with AC input without inserting
a correctly rated Vac fuse.
nDo not operate the MicroPAC with DC input without inserting a correctly
rated Vdc fuse.
nDo not obstruct the fan air intake or air exhaust.
(Care should be taken when connecting cabling).
nDo not connect or disconnect the output +Out or –Out cabling
while the MicroPAC is in operation.
nAlways make sure the output screws are properly torqued [15 inch-lb]
before applying power.
Contents Page
Mechanical
Considerations 2
Product
Description 2
Technical
Description 4
Output Power
De-rating Curve 5
MicroPAC to MicroPAC
Configuration 6
Power Shed Mode 7
Power Shed Mode
Functional Description 8
No Load
Power Dissipation
with and without
Power Shed Mode 9
Field Replacement Unit 10
Customer Interface 12
J2 Customer
Interface Signals 13
Mechanical 16
Front Panel 17
Model
Numbering Scheme 18
Specifications 19

vicorpower.com Applications Engineering: 800 927.9474 Page 2
Mechanical Considerations
The MicroPAC power supply can be mounted on four of the six surfaces using
standard 6-32 screws with a maximum torque of 7 inch-lb.
When using the mounting points the maximum insertion depth of the screw
into the chassis from the outside surface must not exceed 0.125”.
When considering a mounting location and/or orientation it is important not
to restrict the air flow entering and exiting the MicroPAC. Air is drawn into the
MicroPAC through the fan guard located next to the input power connector at the
rear of the power supply and exhausts through the load side of the power supply
next to the LED display panel. Westcor recommends a minimum clearance of 2”
be kept at the front and rear of the MicroPAC.
Care should be taken to minimize the output cabling as not impede the air
exhausting from the MicroPAC, the output screw securing the cabling to the
output terminals should be torque to 15 inc-lb not to exceed 20 inc-lb.
Product Description
The MicroPAC is a factory configurable power supply providing up to 1,300 W of
continuous power in a small slimline 1 u package. The power supply provides
up to 4 isolated outputs and combines power factor correction along with high eciency
and power density. The MicroPAC boasts a power density of 25 Win3and eciency up
to 92%, the power supply is available in a wide temperature range configuration and
for harsh environments and mil-cots applications conformal coated. All configurations
carry full safety agency approvals i.E. Ul60950 en60950 and are CE marked.
The MicroPAC power supply platform supports a wide range of customer power
requirements and is especially suited for distributed power architectures. The design
oers a small flexible cost-eective solution for applications requiring high eciency
and power density. The isolated outputs may be placed in parallel/series configurations
with automatic current sharing. For applications requiring higher power levels the
MicroPAC's can be configured in arrays with box to box current sharing.
Applications Include
nFactorized power architectures nPrinting
nDistributed bus architectures nMIL-COTS applications
nIndustrial nTelecommunications
nAutomation equipment nRenewable energy
Standard Features
nHigh eciency up to 92% nOutput series capability
nSmall Size nOutput current sharing
nHigh power density (25 W/In3) nMicroPAC to MicroPAC current sharing
nUp to 1300 W nPower shed capability
(Configuration dependent) nVibration MIL-STD 810-F
nLow power standby mode Figure 514.5C-17
(Green mode) nOvertemperature warning
nUniversal Input nOvertemperature shutdown
(85 to 264 Vac) (47 to 400 Hz)

vicorpower.com Applications Engineering: 800 927.9474 Page 3
Standard Features (Cont.)
nDC Input (120 to 300 Vdc) nIntelligent fan control
nUp to 4 isolated outputs nField replaceable fan
nVisual LED display panel nIndividual output enable / disable
nStandard 12 V output nAll output enables / disable capability
nStandard 14 V output nTTL control signal
nStandard 24 V output nVisual LED display panel
nStandard 28 V output nVisual LED display panel
nStandard 36 V output nShock MIL-STD 810F
nStandard 48 V output Method 516.5 procedure 1
n5 V @250 mA Isolated Aux Supply nWave, 40G 11 mS
nOutput parallel capability nTemperature Range
-20°C to +55°C (+65°C @ 50% load)
Optional Features
nExtended temperature range
-40ºC to +55ºC operation (+65°C @ 50% load)
nConformal coated
nPower shed Mode
AML Approved Manufacturing List
VAC Volts Alternating Current
VDC Volts Direct Current
BCM Bus Converter Module
PE Protective Earth
LED Light Emitting Diode
EMI Electro-Magnetic Interference
FPA Factorized Power Architecture
FRU Field Replaceable Unit
GSD General shutdown
MTBF Mean Time Between Failure
NTC Negative Temperature Coefficient
PFC Power Factor Correction
PCB Printed Circuit Board
PS Power Supply
MicroPAC MicroPAC
PSM Power Shed Mode
PC Performance Criteria
RoHS Restriction of Hazardous Substances
Acronym Term
Table 1.
Acroynm Defintitions

vicorpower.com Applications Engineering: 800 927.9474 Page 4
PFC Control
+12 V
+5 V
Smart Fan
controller
FAN
Temp detecon on
Boost heatsink
T
Microcontroller
PIC program
Port
+5 V+12 V
+12 V
Interface Connector
1) +5.0 Vdc
2) OV
3) ED 1
4) Over Temp Warning
5) ED 3
6) AC_OK
7) Standby Mode
8) General Shutdown
9) Fan Fault
10) ED 2
11) N/C
12) ED 4
LED Indicators
Reverse logic
BCM_1
ED/1
ED/2
ED/3
ED/4
GSD
Standby Mode
AC_OK
Fan Fault
Over Temp
20 MHz
EMI Filter
House Keeping
Bridge Recfier
85 – 264 Vrms 47 –400 Hz
120 –300 Vdc
External 15 A fuse required
DC
AC
MicroPAC Chassis
PE
PE
PE BCM_1
BCM_1
BCM_1
Boost ConvertersSo Start
Isolated Output
Isolated Output
Isolated Output
Isolated Output
Isolated +5 Vdc / 500 mA
+12 V
+5 V
BCM control
Technical Description
The MicroPAC power supply is designed to operate using a single phase voltage source
input between 85 Vrms and 264 Vrms or 120 to 300 V dc source. The basic building
blocks of the MicroPAC are an EMI filter, Power Factor Correction stage, cooling fan, and
housekeeping, associated microcontroller circuits along with customer interfaces and
galvanic isolated outputs and control signals.
Figure 1.
Simplified
MicroPAC
Block Diagram

vicorpower.com Applications Engineering: 800 927.9474 Page 5
Output Power De-rating Curve
The MicroPAC is designed to operate from a single electrical phase; as such it can be
operated directly from a normal wall outlet socket. These sockets are normally rated
for 12 A continuous current draw and 15 A peak current draw. With this in mind it is
necessary to institute a power de-rating curve to maintain the operational range of the
MicroPAC within these boundaries.
80 90 100 110 120 130 140150160170180 190200210 220230
850
895
940
985
1030
1075
1120
1165
1210
1255
1300
Output Power (Watts)
AC Input (Vrms)
Output Power (W)
Figure 2.
Output Power De-rating Curve
vs.
AC Input Voltage

vicorpower.com Applications Engineering: 800 927.9474 Page 6
MicroPAC to MicroPAC Configuration
The MicroPAC power supply’s with the same output voltages can be placed in parallel
arrays by connecting the output positive (+) and return (-) rails to the respective positive
and return rails of the next MicroPAC. If individual Micro-PAC’s are configured in an
array it is necessary to make sure all MicroPAC are powered up at the same time. Where
possible the same AC source should be used to power all MicroPAC's in the array.
Pin 2 0 V (+5 V return) of the customer interface connector should be daisy chained
together on each MicroPAC in the array. The GSD signal Pin 8 should also be daisy
chained together and be used to turn on all outputs at the same time. The current
sharing is achieved by using the droop sharing method and produces in the order of 5
–10% current sharing accuracy (contact factory for details). It is important to note that
following good cable routing and symmetry is critical for good current sharing and load
balancing.
Pin 8 should be connected to Pin 2 on power up of the array. This will ensure all outputs
are held in the disabled state. Upon successful power up of the array Pin 8 should be
released and le open circuit, allowing all the outputs to be enabled.
Figure 3.
MicroPAC to MicroPAC
Configuration

vicorpower.com Applications Engineering: 800 927.9474 Page 7
Power Shed Mode
Introduction to the MicroPAC Power Shed Mode
The aim of the power shed mode is to increase the overall light load eciency of the
MicroPAC. This is achieved by minimizing the power dissipation when light load or no
load conditions are present on the MicroPAC output.
The original concept of improving light load eciency for VI Chip Bus Converter arrays
was developed by Mr. Ankur Patel (Vicor Product Line Engineer).
The following is an alternative method of power shedding
incorporated within the MicroPAC.
Power Shed Mode Prerequisites
nSlots 1 to 4 must be populated
nAll outputs must be the same voltage
nAll slots must be configured in a parallel array
nCurrent rate slew rate not to exceed 20.8 A/s
nThe PSM is not suitable for constant dynamic loads
Configuring Power Shed Mode
The Power Shed Mode is factory configured.
Power Shedding Bands
There are four operational modes for the power shedding scheme.
1 0.0 – 250 W Output 1, active
2 250 – 500 W Output 1 and 2, active
3 500 – 750 W Output1, 2 and 3 active
4 750 – 1200 W / 1300 W Output 1, 2, 3 and 4 active
Table 2.
Connector Kit
(19-130066)
Material List
Category Customer Load Output

vicorpower.com Applications Engineering: 800 927.9474 Page 8
Power Shed Mode Functional Description
On power up with the power shed function enabled all four output channels are initially
enabled, channel one to four LED’s should be illuminated. Circuitry internal to
the MicroPAC monitors the amount of current drawn from the MicroPAC and is
proportional to the customer load.
If the load falls into category 1, the following will be observed.
Aer 5 seconds output 4 will turn o, aer 10 seconds output 3 will turn o,
aer 15 seconds output 2 will turn o.
If the customer load falls into category 2, the following will be observed.
Aer 5 seconds output 4 will turn o, aer 10 seconds output 3 will turn o,
output 1 and 2 will remain on.
If the customer load falls into category 3, the following will be observed.
Aer 5 seconds output 4 will turn o, output 1, 2 and 3 will remain on.
If the customer load falls into category 4, all output will remain on.
Output 1
Output 2
Output 3
Output 4
Off
Off
Off
Off
Off
Off
Off
On
On
On
On
5 sec
5 sec
5 sec
10 sec
15 sec
Category 1
Output 1
Output 2
Output 3
Output 4
Off
Off
Off
Off
Off
Off
On
On
On
On
5 sec
5 sec
10 sec
Category 2
Output 1
Output 2
Output 3
Output 4
Off
On
On
On
On
5 sec
Category 3
Output 1
Output 2
Output 3
Output 4
On
On
On
On
Category 4
Off
Off
Off
Off
Off
Off
Off
Off
Figure 4.
Power Shed

vicorpower.com Applications Engineering: 800 927.9474 Page 9
Shoot First, Ask Questions Later
When the MicroPAC is operating in categories 1 to 3 and detects an increase in load
current applied to the output which incurs into the next power band the internal
microcontroller will turn all outputs on, regardless of the actual amount of load added.
(Shoot first ask question later) with all the outputs enabled, the microcontroller will
turn o redundant outputs
In the Power Shed Mode this is a constant cycle of detecting output load and continually
adjusting the outputs to satisfy that need.
No Load Power Dissipation with and without Power Shed Mode
1234
5
7.5
10
12.5
15
17.5
20
22.5
25
27.5
30 7.06
7.055
7.05
7.045
7.04
Power Shed Mode Disabled
Power Shed Mode Enabled
Number of BCM’s
Power (Was)
Power (Was)
1234
5
8
11
14
17
20
23
26
29
32
35 8.26
8.255
8.25
8.245
8.24
Power Shed Mode Disabled
Power Shed Mode Enabled
Number of BCM’s
Power (Was)
Power (Was)
Figure 5.
No Load Power Dissipation @
25°C with 12 V Output
With the power shed enabled
the average power dissipation
is about 7.05 W
With the power shed disabled
the power dissipation
is around 28.20 W
Figure 6.
No Load Power Dissipation @
25°C with 48 V Output
With the power shed enabled
the average power dissipation
is about 8.25 W;
With the power shed disabled
the power dissipation
is around 33 W.

vicorpower.com Applications Engineering: 800 927.9474 Page 10
Field Replacement Unit
Figure 6.
Fan Assembly
1 1 ASSY FAN AVC DV-12M 40X28MM 14.4 CFM 10-130240-01
2 1 ASSY FAN SANYO DENKI -40C J-SPEED 40X28MM 18.4 CFM 10-130241-01
Table 3.
Field Replacement Unit
Westcor
Item QTY Description Part Number

vicorpower.com Applications Engineering: 800 927.9474 Page 11
Field Replacement Unit (Cont.)
Instructions
1. Remove input power connector.
(this should never be attempted with the input power cable inserted)
2. Remove output power connections
3. Remove four screws, from the back panel (Ref 1) two either side (Ref 2)
4. Remove back panel (Ref 1)
5. Pull back the insulating material to gain access to the fan connector (Ref 7)
6. Depress the latching point on the fan connector (Ref 7)
7. The connector is polarized and removes vertically from the PCB housing
8. Remove four screws (Ref 4). The fan guard and fan are now free from the back panel.
9. Insert new fan, making sure the arrow (Ref 3) is pointed in the direction shown.
(Towards the inside of the MicroPAC)
10. Replace fan guard in the correct orientation (Ref 5)
11. Replace 4 screws (Ref 4).
The torque on these screw should be 5-6 inch-lb. (Friction tight)
12. Insert fan connector (ref 7) into the fan housing.
When inserted correctly you will not be able to remove without depressing the latch
13. Fold the insulating material back
14. Replace the back panel (ref 1) making sure the fan wire is routed
to the side of the fan.
15. Replace the four screws (ref 2). The torque on these screw is 5-6 inch-lb
16. Never apply power to the MicroPAC until all of the reassembly is complete.

vicorpower.com Applications Engineering: 800 927.9474 Page 12
Customer Interface
1 1 CONN HOUSING 12 POS MINITEK 63-00168-12 FCI 90311-012LF
2 12 TERM FEM CRIMP 26-30 AWG 63-00167-01 FCI 77138-101LF
CRIMP TOOL FOR ITEM 2 ----------------- FCI HT-151/RCY21151
3 1 CONN HOUSING 3 POS W/LATCH 63-00084-03 MOLEX 39-01-4030
4 3 TERM FEM CRIMP 16 AWG 63-000125-01 MOLEX 45750-3211
CRIMP TOOL FOR ITEM 4 ----------------- MOLEX 11-01-0199
Figure 7.
Input Power
Connector Pin Designation
(AC Use Only)
Pin Designation
1 Live (L1)
2 Neutral (L2)
3 Protective Earth (PE)
Figure 8.
Input Power
Connector Pin Designation
(DC Use Only)
Pin Designation
1 + DC (L1)
2 - DC (L2)
3 Protective Earth (PE)
Figure 9.
Customer Interface
Pin Designation (J2)
Table 4.
Connector Kit
(19-130066)
Material List
Pin Function
1 +5 V
2 0 V (+5 V Return)
3 ED 1
4 Overtemperature Warning / Overtemperature Shutdown
5 ED 3
6 AC-OK
7 Standby Mode
8 General Shutdown
9 Fan Fault
10 ED 2
11 N/C
12 ED 4
Westcor Vendor
Item QTY Description Part Number Vendor # Part Number

vicorpower.com Applications Engineering: 800 927.9474 Page 13
J2 Customer Interface Signals
Note: All customer interface signals are referenced to the auxiliary +5 V return (Pin 2)
Auxiliary Supply
Pin 1 An auxiliary +5 V supply output is available with a maximum
output of 500 mA (2.5 W).
Pin 2 0 V; this is the return for the above +5 V.
ED/1 Enable/Disable Output Channel One
Pin 3 ED/1: This pin is normally at +5 V potential, this enables
output channel one. To disable output one this pin should
be shorted to Pin 2. If the output is disabled LED 1 will illuminate
on the LED display until the output is enabled.
Overtemperature Warning (Non Latching)
Pin 4 This pin is normally held at +5 V potential when referenced to
Pin 2. When running at 100% load at approximately 50°C ambient
temperature the overtemperature warning signal will be pulled low,
the fault LED indicator will illuminate solid yellow. This is just a
warning that you are approximately +5°C away from the maximum
operating temperature of the MicroPAC at full load.
Overtemperature Shutdown (Latching)
Pin 4 The same pin is used as the overtemperature warning.
At approximately +56°C if running at 100% load the overtemperature
shutdown is triggered. The fault LED previously illuminated a solid
yellow due to the overtemperature warning will now begin to flash
at approximately 2 Hz. All outputs of the MicroPAC will be
automatically disabled. The power supply will go into a shutdown
mode; however the fan will be le running to cool the unit, the
MicroPAC will remain in shutdown mode until the temperature reaches
an acceptable level and the power is recycled.
ED/3 Enable/Disable Output Channel Three
Pin 5 ED/3: This pin is normally at +5 V potential, this enables output
channel three. To disable channel three this pin should be shorted
to Pin 2. If the output is disabled LED 3 will illuminate on the LED
display until the output is enabled.
Power
Pin 6 If the AC or DC power input is present the pin is normally at +5 V
potential when referenced to Pin 2. The blue power LED will illuminate.
If the AC or DC input is lost Pin 6 will fall to logic level zero and the
blue power LED will turn o. This will allow a minimum 10 mS power
loss warning to the customer.

vicorpower.com Applications Engineering: 800 927.9474 Page 14
J2 Customer Interface Signals (Cont.)
Standby Mode
Pin 7 This pin is normally at +5 V potential when referenced to Pin 2. If this
pin is shorted to Pin 2 the MicroPAC will enter a low power standby
mode. In this mode all outputs will be disabled, the main PFC power
supply will be shut-down along with the fan. The blue power LED will
change to an amber color. When the short is removed the power supply
will return to normal operation and the power LED will turn to blue.
General Shut Down (GSD)
Pin 8 This pin is normally at +5V potential when referenced to Pin 2. If this
pin is shorted to Pin 2 all the channels will be disabled and all four of
the GSD LED’s (1-4) will illuminate.
Fan Fault (Latching)
Pin 9 This pin is normally at +5V potential when referenced to pin 2.
In the event of the fan failing the detection circuit will shut the
MicroPAC down, and illuminate the fault LED red. Pin 9; will go from
logic high to logic low level during this event. The MicroPAC will be
latched in this condition until power is removed for 30 seconds, upon
reapplying power if the fault is still persist the power supply will latch
in the shut-down mode until the fault has been cleared.
Ed/2 Enable / Disable Output Channel Two
Pin 10 This pin is normally at +5V potential, this enables output channel two.
To disable channel two this pin should be shorted to Pin 2. If the output
is disabled LED 2 will illuminate on the LED display until the output
is enabled
Not Connected
Pin 11 Pin 11 is not u sed
Ed/4 Enable/Disable Output Channel Four
Pin 12 This pin is normally at +5 V potential, this enables output channel four.
To disable channel four this pin should be shorted to Pin 2. If the output
is disabled LED 4 will illuminate on the LED display until the output
is enabled.

vicorpower.com Applications Engineering: 800 927.9474 Page 15
J2 Customer Interface Signals (Cont.)
Figure 10.
Output TTL logic Signals
AC_OK(Pin6)
FAN_ FAULT(Pin9)
OVER TEMPERATURE WARNING (Pin4)
250mS
250mS
250mS
250mS
2Hz Pulse
0V
+5 V
+5 V(Pin1)
ED/2(Pin10)
ED/3(Pin5)
0V
ED/1(Pin3)
GSD(Pin8)
STANDBY MODE(Pin7)
ED/4(Pin12)
BCM 1 DISABLED
BCM 2 DISABLED
BCM 3 DISABLED
BCM 4 DISABLED
ALL BCM’S DISABLED
STANDBY MODE
+5 V
+5 V
+5 V
+5V+5V
+5 V
+5V
+5V
+5V
+5V
+5V
0V(Pin2)
0V
0V
0V
0V 0V
0V 0V
0V 0V
0V
0V
0V
0V
0V
0V
OVER TEMPERATURE SHUTDOWN (Pin4)

vicorpower.com Applications Engineering: 800 927.9474 Page 16
0
0
.500
5.800
1.329
0
0
1.329
5.800
2X .500
1.72
0
0
2X 1.325
4.00
7.38
7.44
7.45
.19
.287
.502
3.502
3.542
2X 6.486
0
0
1.000
.500
0
0
2X 1.329 2X 5.863
.312
.644
3.356
3.688
2X CUSTOMER MOUNTING
. USE CRIMP TOOL FROM MOLEX P/N - 11-01-0199 FOR J5
4. USE SCREW #6-32 . MAXIMUM INTRUSION OF SCREW INTO CHASSIS
7
3.1
1
9
1.
3.2
INTERPRET DRAWING PER ANSI Y14.5-1994.
NOTES: UNLESS OTHERWISE SPECIFIED
2
4
. USE CRIMP TOOL FROM FCI P/N - HT-151 OR RCY21151 FOR J2
FROM OUTSIDE SURFACE OF CHASSIS = .125"
AIR FLOW
10
12
3
11
CH-1
5
. WESTCOR MATING CONNECTORS KIT P/N 19-130066.
INTERFACE CONNECTOR
PIN NUMBER FUNCTION
1+5 VOLT 20VOLT 3ENABLED/DISABLED - 1 4OVER TEMPERATURE WARNING 5ENABLED/DISABLED - 3 6A/C OKAY 7STANDBY MODE 8GENERAL SHUTDOWN 9FAN FAULT
10 ENABLED/DISABLED - 2 11 NOT CONNECTED 12 ENABLED/DISABLED - 4
CH-3CH-2 CH-4
SEE DETAIL-A FOR PINOUT
A
4
4
2X CUSTOMER MOUNTING
4
4X CUSTOMER MOUNTING
GROUND CHASSIS
#6-32
CHASSIS GROUND
3.2
USE SCREW SIZE
LIVE NEUTRAL
J5
4X CUSTOMER MOUNTING
4
6
8
4
SCALE 8 : 1
J2
2
DETAIL A
SEE NOTE - 2,3.1
Mechanical
Physical Weight
2.15 Lbs.
Figure 11.
Physical Dimensions/
Markings

vicorpower.com Applications Engineering: 800 927.9474 Page 17
1 ED 1 Orange GSD (General Shutdown) Yellow/Green
2 ED 2 Orange GSD Yellow/Green
3 ED 3 Orange GSD Yellow/Green
4 ED 4 Orange GSD Yellow/Green
FLT Fan Fault Red Overtemperature warning Yellow
Overtemperature shut down 2 Hz Flashing Yellow
PWR AC-OK Blue Standby Amber
Front Panel
Figure 12.
LED Indicator Panel
LED Panel
PWR /AC_OK / STANDBY
FAN_FLT /OVER TEMP/OVER TEMP SHUTDOWN GSD / CH 1 -4DisableCH 1-4 DC_OK LED
Customer
Interface
Connector
CH1CH2 CH3CH4
Table 5.
LED Function
LED Function Function
# 1 Color 2 Color

vicorpower.com Applications Engineering: 800 927.9474 Page 18
Model Numbering Scheme
Model Number: UPa - bbbb - cde
Where
a= number of outputs from 1 to 4
b= equals a character denoting output 1 voltage and power
b= equals a character denoting output 2 voltage and power
b= equals a character denoting output 3 voltage and power
b= equals a character denoting output 4 voltage and power
One character will denote a null for an output
c, d, ewill be characters denoting box level options such as fan cooling, conduction
cooling, convection cooling, interfacing scheme, and RoHS status.
Examples
UP1-FZZZ-FSG Denotes a single output of 24 V 1200 W with a standard fan,
standard TTL signaling and control, RoHS compliant
UP4-AAAA-LSN Denotes 4 output unit, each output is 12 V 300 W. The fan is a -40°C
capable unit, standard TTL signaling, and the unit is non-RoHS
U P a - b b b b c d e
Output Configuration
Fill in character from chart below for each output
b = Vout Watts b = Vout Watts
A 12 300 G 48 325
B 12 600 H 48 650
C 12 900 I 48 975
D 12 1200 J 48 1300
E 24 600 K 36 900
F 24 1200 T 28 600
P 14 300 U 28 1200
Q 14 600 M [a] [a]
R 14 900 Z [b] [b]
S 14 1200
[a] M defines a slot with an air block filler, no BCM board
[b] Z indicates the slot is populated with a BCM board that is
connected in series or parallel with the adjacent slot
Character Vout Watts
A 12 300
B 12 600
C 12 900
D 12 1200
E 24 600
F 24 1200
P 14 300
Q 14 600
R 14 900
S 14 1200
Character Vout Watts
G 48 325
H 48 650
I 48 975
J 48 1300
K 36 900
T 28 600
U 28 1200
Z NULL NULL
Output Voltage and Voltage Table (bbbb)
Number of
outputs,
1 to 4
Cooling
F= Fan
L= -40°C Fan
Interface Customer Option
Non-Safety Related
S= Standard (TTL levels)
Signaling and Control
RoHS Compliant
G= RoHS
N= Non-RoHS

vicorpower.com Applications Engineering: 800 927.9474 Page 19
Specifications
Input
Input Voltage 85 – 264 Vac DC Rating: 120 Vdc – 300 Vdc
(¼” x 1¼”) Cooper Bussmann, (5 x 20 mm) Littelfuse,
ABC-15, 216 series,
External Fuse rated 15 A rated 16 A
Littelfuse, (¼” x 1¼”) Littelfuse,
505 series, 505 series,
rated 16 A/500 Vac rated 16 A/500 Vdc
Frequency 47 ~ 400 Hz
Inrush Current 30 A Peak
Efficiency ≥92% @ Full load @ 25°C ≥91% @ Full load @ 25°C
ambient 48 V output ambient 12 V output
Power factor (115 – 230 Vrms) 0.99/0.96 typical; Meets EN61000-3-2
Turn-on time AC on: 1 sec typical; 1.5 sec maximum
EN55022 Class B Information technology equipment — Radio
Conducted EMI disturbances characteristics — Limits and methods of measurement
BS EN55022:1998; CISPR 22:1997, incorporating corrigendum
Harmonic distortion Meets IEC 61000-3-2
Isolation Meets IEC 60950
Leakage current <3.5 mA @ 264 Vac @ 63 Hz
Hold up time 20 mS typical
Warranty 2 Years
Output
Number of outputs 1 to 4
Normal output voltages 12 V, 14 V, 24 V, 28 V, 36 V and 48 V (contact factory for details)
Maximum output current 100 A @ 12 V 85.7 A @ 14 V [27 A @ 48 V]
Auxiliary output 5 V @ 0.5 A 50 mV p-p
Voltage regulation 12 V ± 3% typical 14 V ± 3% typical 48 V ± 2% typical
Ripple and noise 12 V output (150 mV – 300 mV p-p) typical
(20 MHz bandwidth) 14 V output (150 mV – 300 mV p-p) typical
(Full load) 48 V output (600 mV – 900 mV p-p) typical
Current sharing accuracy 5 to 10%
Short circuit protection “Fold-Back” Technique
Over voltage protection 12 V output set point 12.5 V typical 48 V modules 50 V typical
Thermal protection All outputs disabled when internal temperature exceeds safe operating
Maximum load 12 V up to 1200 W
Maximum load 48 V up to 1300 W
Maximum load 5.0 V Aux up to 2.5 W
Maximum load capacitance 1000 µF per 12 V output 100 µF per 48 V output

vicorpower.com Applications Engineering: 800 927.9474 Page 20
Specifications (Cont.)
Environmental
Storage temperature -40°C ~ +85°C
Operating temperature -20°C ~ +55°C (-20°C to +65°C @50% load)
(Extended temperature range is available; -40°C to +55°C) (+65°C @50% load)
Functional shock MIL-STD 810F Method 516.5 procedure 1,
terminal peak saw-tooth wave, 40G 11 mS
Vibration MIL-STD 810G for minimum integrity vibration
Humidity 95% non condensing
Cooling Fan cooled (field replaceable) temperature speed control
Electromagnetic Compatibility
EN61000-6-1n European General EMC Immunity
IEC 61000-4-11 [50 Hz] Voltage Dips 30% for 0.5 prd, pc C Voltage Interrupts (pc C)
IEC 61000-4-4 [TRANSIENT] EFT/Burst ± 1 kV AC leads ± 500 V DC leads.
5/50 nsec 5 kHz rep rate (pc B)
IEC 61000-4-5 [SURGE] Power line Surge AC in ± 2 kV CM ± 1 kV DM DC in
± 500 V CM & DM 1.2/µSec (pc B)
EN 61000-4-6 RF Common Mode Input leads, AC & DC leads,
[0.15 to 80 MHz] CDN 150 kHz to 80 MHz, 3 Vrms with 80% AM @1 kHz (pa A)
EN 61000-4-2 Electrostatic Discharge ± 4 kV Contact ± 8 kV Discharge (pc B)
[ELECTROSTATIC]
EN 61000-4-3 RF E-Field 80 MHz to 1 GHz 3 V/m with 80% AM @ 1 kHz (pc A)
EN 61000-4-8 Power Freq H-Field 3A/M @ 50 Hz (pa A)
Reliability
FIT 3,449 FITS, 50% duty cycle at 25°C ambient; 45% RH ± 10%, 90% total
output load; any specified input voltage; sea level operation.
Service life 5 Years
Safety & Regulatory
UL UL 60950-1:2007 CAN C22.2 No. 60950-1-07
CSA CSA*60950 3rd Edition (CB Report to include all national deviations)
EN EN 60950-1/A12:2011
IEC 60950-1-2005 2 Ed. +A1:2009