Unipower TPCMQ48 SERIES User manual

OPERATING MANUAL
RACK-MOUNT DC/DC CONVERTERS
TPCMQ48/TPCMQ24 SERIES
www.unipowercorp.com
Manual No. TPCMQ-0904-2 © 2005 UNIPOWER Corp.
All Rights Reserved
UNIPOWER Corporation
TPCMQ-ManRevC-07-06-05
NORTH AMERICA • 3900 Coral Ridge Drive, Coral Springs, Florida 33065, USA • Tel: [phone] • Fax: [phone] • [e-mail]
EUROPE • Parkland Business Centre, Chartwell Road, Lancing BN15 8UE, ENGLAND • Tel: [phone] • Fax: [phone] • info@unipower-europe.
Manual No. TPCMQ-051209
TPCMQ-ManRevD-051209
©2009

CONTENTS
SECTION TOPIC PAGE
1.0 Introduction .............................................................................1
2.0 Features .................................................................................3
3.0 Product Line ...........................................................................3
4.0 Safety Warnings .....................................................................4
5.0 Warranty .................................................................................4
6.0 Unpacking and Inspection ......................................................5
7.0 Front Panel Description ..........................................................5
8.0 DC/DC Converter Module Specifications ...............................5
9.0 Description of Features and Options ......................................7
10.0 Mechanical Specifications ......................................................8
11.0 Safety and Industry Standards ...............................................8
12.0 Operating Information ...........................................................10
13.0 Parallel Operation ..................................................................11
14.0 Control & Supervisory Signal Connections ..........................14
15.0 Converter Module Connections ............................................15
16.0 Description of Rack/Shelf Control & Supervisory Signals ....17
17.0 Installation ............................................................................19
18.0 Maintenance .........................................................................20
19.0 DC/DC Converter & Rack/Shelf Setup and Testing ..............20
20.0 Troubleshooting Guide .........................................................22
Appendix TPCMQ48 DC/DC Converter Data Sheet ............................A1
Appendix TPCMQ24 DC/DC Converter Data Sheet ............................A2

ILLUSTRATIONS
FIGURE TITLE PAGE
1 TPCMQ48/TPCMQ24 DC/DC Converter Module and Rack/Shelf................... 2
2 Front Panel of TPCMQ48/TPCMQ24 DC/DC Converter Module .................... 2
3 TPCMQ48/TPCMQ24 Series Module Mechanical Dimensions ...................... 9
4 Front and Back of TPCMQ Series Rack/Shelves ........................................... 9
5 Rated Output Current vs. Ambient Temperature.............................................. 9
6 Remote Sensing Connection ........................................................................ 12
7 Parallel Connection of TPCMQ Rack/Shelves............................................... 12
8 Checking the Remote Adjust Input ................................................................ 12
9 TPCMQ48 Converter Module Pin Connections ............................................. 16
10 TPCMQ24 Converter Module Pin Connections ............................................. 16

TPCMQ DC/DC CONVERTER SERIES
OPERATING MANUAL
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OPERATING MANUAL
TPCMQ48 & TPCMQ24 SERIES DC/DC CONVERTERS
AND RACK/SHELF
1.0 INTRODUCTION
This operating manual should be read through carefully before installing and
operating the TPCMQ48 and TPCMQ24 DC/DC converter systems.
Unipower’s 1U high DC/DC converter systems convert a 48VDC nominal
input to 12 and 13.6VDC at 1800 and 1950 watts, respectively, or to 24 and
27.2VDC at 2,100 watts; or a 24VDC nominal input to 48 or 54.4VDC at
3,000 watts. The converter system consists of three DC/DC converter modules
in a compatible 19-inch rack/shelf. See Figure 1. The input is a wide
range 40 to 60 or 20 to 30VDC, and the output has a -25 to +10% adjustment
range. In 2+1 redundant operation the output is 1,400 watts for the
TPCMQ48 or 2,000 watts for the TPCMQ24. In this case a converter module
can be hot-swapped without affecting the output. The output voltage can be
controlled by a remote analog input in the range 0 to +5V.
Each TPCMQ48 converter module produces 12, 13.6, 24 or 27.2VDC at 700
watts, and each TPCMQ24 module produces 48 or 54.4VDC at 1,000 watts.
The modules, which are connected in parallel in the rack/shelf, have automatic
load sharing and ORing diodes so they can be added or replaced while the
system is operating. The modules are up to 89% efficient and have up to 12.5
watts per cubic inch power density.
A 25-pin interface subminiature D connector on the back of the rack/shelf pro-
vides control and monitoring inputs and outputs. An inhibit input turns the entire
rack/shelf output off or on. Remote sensing connections provide precise regu-
lation at the point of load. Other control signals are input power fail and output
power good logic signals, and analog voltage remote adjust inputs- all for each
individual converter module.
Front-panel green LEDs indicate input power good and output power good for
each converter module. The converter modules and rack/shelf are safety agen-
cy certified and CE marked.

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TPCMQ DC/DC CONVERTER SERIES
OPERATING MANUAL
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Figure 1. TPCMQ48/TPCMQ24 DC/DC Converter Module and Rack/Shelf.
Figure 2. Front Panel of TPCMQ48/TPCMQ24 DC/DC Converter Module.
INPUT POWER
GOOD LED
HANDLE OUTPUT POWER
GOOD LED




TPCMQ DC/DC CONVERTER SERIES
OPERATING MANUAL
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2.0 FEATURES
The following is a summary of the important features of the TPCMQ DC/DC converter
modules and rack/shelf:
Constant Output Voltage
Remote -25 to +10% Output Adjustment
Output Overload Protected
Six Different Models
-200C to +700C Operating Temperature
Low Profile: 1U (1.72 inches or 44mm) High
19-Inch Compatible Rack/Shelf
19- or 23-Inch Rack Mounting
Shelf Capacity Up to 3 Converter Modules
Power Density Up to 12.5 Watts/Cubic Inch
Up to 89% Efficiency
Wide Range DC Inputs
I2C Serial Data Bus Option
Remote Sensing
Active, Single-Wire Load Sharing
Integral Output ORing Diodes
Hot-Swappable Converter Modules
Redundant or Non-Redundant Operation
LED Operating Indicators
Control and Monitoring Interface Signals
3.0 PRODUCT LINE
3.1 DC/DC Converter Modules
MODEL INPUT
VOLTAGE
OUTPUT
VOLTAGE
MAX. OUTPUT
CURRENT
MAX. SYSTEM
CURRENT*
TPCMQ48-12/54 40-60VDC 12VDC 54.2A 150A
TPCMQ48-13/48 40-60VDC 13.6VDC 47.8A 143.4A
TPCMQ48-24/29 40-60VDC 24VDC 29.2A 87.6A
TPCMQ48-27/26 40-60VDC 27.2VDC 25.7A 77.1A
TPCMQ24-48/20 40-60VDC 48VDC 20.8A 62.4A
TPCMQ24-54/18 40-60VDC 54.4VDC 18.4A 55.2A
* For 3 Modules in a rackshelf
3.2 System Rack/Shelves
MODEL WIDTH HEIGHT NO. MODULES
TPCMQR1U3-48 19” (483 mm) 1.72” (43.7 mm) 3
TPCMQR1U3-24 19” (483 mm) 1.72” (43.7 mm) 3
NOTE: System shelf and hot-swap modules must be ordered separately.

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TPCMQ DC/DC CONVERTER SERIES
OPERATING MANUAL
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3.3 Options
CODE DESCRIPTION
ZI
2C Serial Data Bus
NOTE: Add Option Code as suffix to model no. on both modules and rack/shelf.
Contact factory on availability of Option Z.
4.0 SAFETY WARNINGS
3.1 These converter modules and shelf have hazardous external and
internal voltages. They should be handled, tested and installed only
by qualified technical persons who are trained in the use of power
systems and are well aware of the hazards involved.
4.2 The input terminals are at hazardous voltage potentials. Do not touch this
area when power is applied.
4.3 When operating this converter system, the frame ground terminal must be
connected to safety ground to minimize electrical shock hazard.
4.4 The internal voltages are at hazardous potentials. The converter module
covers should not be removed. There are no user-serviceable components
in these units. Removing the covers of the modules will void the warranty.
5.0 WARRANTY
All products of UNIPOWER Telecom, a division of UNIPOWER Corporation, are warranted for two
(2) years from date of shipment against defects in material and workmanship. This warranty does
not extend to products which have been opened, altered or repaired by persons other than per-
sons authorized by the manufacturer or to products which become defective due to acts of God,
negligence or the failure of customer to fully follow instructions with respect to installation, ap-
plication or maintenance. This warranty is extended directly by the manufacturer to the buyer and
is the sole warranty applicable. EXCEPT FOR THE FOREGOING EXPRESS WARRANTY, THE
MANUFACTURER MAKES NO WARRANTY, EXPRESS OR IMPLIED, INCLUDING, BUT NOT
LIMITED TO, THE WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. As the sole and exclusive remedy under this warranty, the manufacturer, at its option,
may repair or replace the non-conforming product or issue credit, provided the manufacturer’s
inspection establishes the existence of a defect. To exercise this remedy, the buyer must contact
the manufacturer’s Customer Service Department to obtain a Return Material Authorization num-
ber and shipping instructions. Products returned without prior authorization will be returned
to buyer. All products returned for repair must be shipped freight prepaid to UNIPOWER. If the
buyer fails to fully comply with the foregoing, the buyer agrees that no other remedy (including,
but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person
or property or any other incidental or consequential losses) shall be available to the buyer.

TPCMQ DC/DC CONVERTER SERIES
OPERATING MANUAL
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6.0 UNPACKING AND INSPECTION
6.1 These TPCMQ Series DC/DC Converters were carefully tested, inspected
and packaged for shipment from our factory. Upon receipt of them they
should be carefully unpacked and inspected for any damage in shipment.
6.2 If there is evidence of damage, do not attempt to test the unit. The freight
carrier should be notified immediately and a claim for the cost of the con-
verter system should be filed with the carrier for direct reimbursement. Be
sure to include the model and serial number of the damaged unit in all
correspondence with the freight carrier. Also save the shipping carton and
packing material as evidence of damage for the freight carrier’s inspection.
6.3 UNIPOWER Corporation will cooperate fully in case of any shipping
damage investigation.
6.4 Always save the packing materials for later use in shipping the unit. Never
ship the converter system without proper packing.
7.0 FRONT PANEL DESCRIPTION
The front panel of a TPCMQ converter module is shown in Figure 2. At the top
left is the Input Good LED (green) and at the top right is the Output Good LED
(green) Three 40mm fans cool the module.
8.0 DC/DC CONVERTER MODULE SPECIFICATIONS
Specifications for a Single Converter Module. Typical at 24 or 48VDC Input, Full Load and 25°C
Unless Otherwise Noted.
INPUT TPCMQ48 TPCMQ24
Voltage Range ...................................... 40-60VDC 20-30VDC
Inrush Current Limiting ............................. 20A Peak 100A Peak
Input Current, Full Load ............................... 16.6A@48VDC 46.8A@24VDC
EMI Filter, Conducted .................................. Standard Standard
Analog Voltage Adjust Input ..................... 0 to +5V 0 to +5V
Input Protection ........................................... Internal Fuse, 30A Internal Fuse, 100A
OUTPUT
Current & Voltage1, ...................................... 54.2A@12VDC 20.8A@48VDC
............................... [email protected] [email protected]
................................. 29.2A@24VDC
............................. [email protected]
Voltage Adjustment Range, Remote ............ -25 to +10% -25 to +10%
Voltage Trim Pot Adjust ............................ ±5% ±4%

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TPCMQ DC/DC CONVERTER SERIES
OPERATING MANUAL
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OUTPUT (Cont’d)
Total Regulation, Max. ....................... .............................. 2.0% 2.0%
Overvoltage Protection ............... ..................................... Latched Shutdown Latched Shutdown
Filtering: Wideband Noise, 20MHz BW, P-P .................... 2.0% 2.0%
Voice Band Noise ............................ ................................ <32dBrnC <32dBrnC
Current Limit .................................................................... 105% Rated Current 105% Rated Current
Efficiency .................................... ..................................... 86% 89%
SAFETY STANDARDS .................................. UL60950, CSA22.2 No.60950, EN60950
STATUS INDICATORS
Input Power Good ............................................................ Green LED and Logic LO Output
Output Power Good ......................................................... Green LED and Logic LO Output
ENVIRONMENTAL
Operating Temp. Range .................... .............................. -20°C to +70°C
Output Current Derating .................... .............................. 2.5%/°C, 50°C to 70°C
Storage Temp. Range ...................................................... -40°C to + 85°C
Humidity ........................................................................... 0% to 95%, Non-Condensing
ESD .............................................. ................................... Bellcore GR-1089-Core and EN61000-4-2
Cooling ...................................... ...................................... DC Ball Bearing Fans
PHYSICAL SPECIFICATIONS
Case Material, Module ..................................................... Aluminum
Rack/Shelf ................. .............................. Aluminum
Dimensions, Inches (mm)
Converter Module .................. ............................. 1.60 H x 5.00 W x 10.00 D
(40.6 x 127 x 254)
19” Rack/Shelf .............................. ...................... 1.72 H x 19.00 W x 11.56 D
(43.7 x 483 x 294)
Weight
Converter Module ......................... ...................... 3.15 lbs (1.43 kg.)
19” Rack/Shelf ............................. ....................... 4.15 lbs (1.88 kg.)
NOTE: 1. Voltage set at factory.

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9.0 DESCRIPTION OF FEATURES & OPTIONS
FEATURE / OPTION DESCRIPTION
Wide Range DC Input The DC input range is from 40 to 60 or 20 to 30VDC.
EMI Input Filter This filter suppresses conducted noise from the converter back
onto the DC input line.
Inrush Current Limiting When the converter is turned on, the input inrush current is lim-
ited by an electronic circuit.
Output Voltage
Adjustment
The output voltage adjustment range for all models is approxi-
mately -25 to +10% of the nominal output voltage, made at the
input to the remote adjust terminal. There is also a trimming
potentiometer on the top of the case which gives a smaller output
adjustment range of about ±5%.
Remote Output Adjust
This input is used to remotely adjust each converter output volt-
age. An analog voltage from 0 to +5V controls approximately -25
to +10% output range. This input can be controlled externally by
a power control system. The module analog inputs can also be
connected together so that the external control voltage adjusts all
the module outputs simultaneously.
Thermal Protection
If the converter module overheats internally, it will automatically
shut down. The Output Power Good LED turns off, the Output
Power Good signal goes HI and the Overtemperature Warning
signal goes HI.
Current Sharing
The TPCMQ converter modules are automatically connected to
current share with each other when they are inserted into the
rack/shelf. A single-wire connection provides this. The modules
current share with an accuracy of 10% of their full load output
current for total loads of 50% to 100%. The rack/shelf current
share pin can be used to current share with another rack/shelf of
the same output voltage.
ORing Diode
This diode in series with the module output protects the parallel-
connected modules. If the output of one module fails to a short or
to a lower than normal output voltage, the other modules are not
affected. Also when hot-swapping modules, the diode prevents
a glitch in the output voltage while the output is still rising on the
inserted module. The 5V 250mA standby output also has an OR-
ing diode.
Overvoltage Protection
The output is protected from overvoltage due to fault conditions
in the module. Overvoltage protection is set at greater than 110%
of the output voltage. The result is a latched shutdown of the
converter module. It is reset by cycling the DC input off and then
back on.

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TPCMQ DC/DC CONVERTER SERIES
OPERATING MANUAL
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9.0 DESCRIPTION OF FEATURES & OPTIONS (cont’d)
FEATURE / OPTION DESCRIPTION
No Load Operation The module output can be operated down to zero load while
maintaining output regulation.
Hot Swap Operation
Hot swap operation means that the converter modules can be
removed and replaced while the rack/shelf is powering the load.
If the system is operated in an N+1 redundant mode, hot-swap
replacement will not affect the output voltage.
Output Protection
Output current limiting protects the output of each converter
module
from damage due to an overload or short circuit condition. This
protection is continuous, without damage, and recovery is auto-
matic when the overload is removed. Current limiting begins at
about 105% of rated output current.
LED Indicators
The Input Power Good indicator is a green LED, showing that
input DC is present. The Output Power Good indicator is a green
LED showing that the output voltage is present and within oper-
ating range.
Control and Monitoring
Signals
For detailed description of Inhibit, Current Share, Remote Sense,
Remote Adjust, Input Power Good and Output Power Good
signals, see Section 16, Description of Control and Supervisory
Signals.
10.0 MECHANICAL SPECIFICATIONS
The mechanical dimensions of the TPCMQ Series converter modules and the
rack/shelves are shown in Fig. 3.
11.0 SAFETY AND INDUSTRY STANDARDS
11.1 The TPCMQ DC/DC Converters and rack/shelves meet the following
safety
certifications:
STANDARD AGENCY
UL60950 UL
CSA22.2 No. 60950 CUL
EN60950 DEMKO
11.2 The TPCMQ DC/DC Converters and rack/shelves are CE marked to
indicate conformance to the European Union’s Low Voltage Directive.

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OPERATING MANUAL
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Figure 3. TPCMQ48/TPCMQ24 Series Module Mechanical Dimensions.
Figure 4. Front and Back of TPCMQ Series Rack/Shelves
Figure 5. Rated Output Current vs. Ambient Temperature
V. ADJ.




17.19
(437)
1.72
(43.7)
123
FRONT
VIEW
BACK
VIEW
TPCMQR1U3-48
+
-
BACK
VIEW
TPCMQR1U3-24
+
-
3 2 1
DC IN
DC OUT
DC OUT
+V -VJ4
J4
GRD

GRD


NO. 10-32 STUDS,
2 PER MODULE

NO. 8-32 STUDS, 2
PER MODULE
+V -V 3 2 1

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12.0 OPERATING INFORMATION
12.1 Input Voltage. The TPCMQ Series converters operate off DC input volt-
ages within the range of 40 to 60 or 20 to 30VDC. There is a separate
input connection for each converter module to bus bars at the rear of the
rack/shelf. For complete details see Section 17.2 and Figure 4.
12.2 Output Connection. The DC output of the rack/shelf is provided at two
copper bus bars. Each bus bar has a no. ¼-20 stud and nut for the output
connections. For complete details see Section 17.3 and Figure 4. Both
positive and negative outputs are floating and isolated from the chassis.
12.3 Output Voltage. The output voltage of each converter module is factory
set to its specified voltage. This voltage can be adjusted in two ways. First,
there is a V adjust potentiometer at the top of the module case. See Figure
3. This adjustment has a range of approximately ±5% for the TPCMQ48
and ±4% for the TPCMQ24.
Second, there is a wide-range adjustment of approximately -25% to +10%
by means of the Remote Adjust input to each converter module. This is
found at pin 16 of the TPCMQ48 and pin 29 of the TPCMQ24. On the
rack/shelf the Remote adjust is found at J4 pins 12, 24 & 25 for each
module. A zero to +5V input to these pins adjusts the output from -25% to
+10%. An input voltage of +2.5V, or an open, gives the factory-set voltage
at the output. The output voltage can actually go above +10%, but this
could trip the overvoltage protection (OVP) circuit.
All three converter modules in a rack/shelf can be controlled from a single
analog control voltage by connecting J4 pins 12, 24 & 25 together.
12.4 Output Power. Maximum output power for the TPCMQ48 modules is 700
watts for the 24 or 27.2V output models and 650 watts for the 12 or 13.6V
models. The maximum output power for the TPCMQ24 modules is 1,000
watts. The maximum output power of a module may be drawn at up to
50oC ambient temperature. Above 50oC the output current must be derat-
ed by 2.5%/oC. See Fig. 5. The maximum operating temperature is 70oC,
at which the output current must be derated by 50%.
12.5 Output Overload Protection. Each converter module output is protected
from damage due to overload or short circuit conditions. This protection is
continuous and without damage; recovery is automatic when the load is
removed. Current limiting takes place at approximately 105% of the rated
output current.

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12.6 Remote Sensing. Remote sensing connections are made to pins 11
(+Sense) and 23 (-Sense) of the converter rack/shelf J4 connector. Re-
mote sensing is used to regulate the output voltage at the point of load by
compensating for the voltage drop in the wires to the load. The +Sense
lead must be connected to the + side of the load and the -Sense to the
- side of the load. The sense leads should be a color-coded, twisted pair of
AWG no. 22 or 24 copper wire. See Fig. 6.
Remote sensing can compensate for a total voltage drop of 0.5V, or 0.25V
per load wire. The sense leads should not exceed 10 feet (3 meters) in
length. If remote sensing is not required, the sense leads may be left open
for local sensing at the output terminals. Be careful not to reverse the
sense lead connections, as this could damage the output.
12.7 Control and Supervisory Signals. All control and supervisory signals are
accessible at J4, a 25-pin subminiature D connector at the back of the
converter rack/shelf. See Section 16 for a complete description of these
input and output signals.
12.8 Alarm Signals. Among the control and supervisory signals are three logic
alarms: Input Power Fail, Output Power Good and Overtemperature Warn-
ing.
They are logic signals referenced to -Sense, J4 Pin 23. There are logic
alarms for each converter module. The first alarm is Input Power Fail. A
logic HI indicates that there is no DC input. The second alarm is Output
Power Good. A logic HI indicates a DC output failure. The third alarm is
Overtemperature Warning. A logic HI indicates the internal air temperature
has reached a critical level just prior to the unit shutting down.
13.0 PARALLEL OPERATION
The converter modules in the rack/shelf are all connected in the parallel, current
sharing mode by means of a single-wire current share connection among them.
A rack/shelf can be operated in either an N+1 redundant mode or non-redundant
mode.
13.1 Redundant Operation. From Table 13-1, the 19-inch shelf can be oper-
ated in a 2+1 redundant mode. This means that the full load current must
be carried by two converter modules. While operating normally, the current
is shared approximately equally among the three modules. If one module
fails, however, the output current is then maintained by the two operating
modules. The failed unit can then be replaced without affecting

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TPCMQ DC/DC CONVERTER SERIES
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Figure 6. Remote Sensing Connection
Figure 7. Parallel Connection of TPCMQ Rack/Shelves.
Figure 8. Checking the Remote Adjust Input
CONVERTER
RACKS/SHELF
NO. 2
CONVERTER
RACKS/SHELF
NO. 1
LOAD
UP TO .0.25V DROP
UP TO .0.25V DROP
No. 22 or 24 AWG TWISTED PAIR

TPCMQ DC/DC CONVERTER SERIES
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the output current to the load. N+1 redundancy with quick replacement of
a failed module results in virtually infinite MTBF.
Table 13-1 Redundant and Non-Redundant Operation
MODULE
MODEL NO.
OUTPUT
VOLTS
MODE NO. OF
MODULES
MAX. OUTPUT
CURRENT
OUTPUT
WATTS
TPCMQ48-12/54
TPCMQ48-12/54
12V
12V
2+1 Redundant
Non-Redundant
3
3
108.4A
150.0A
1300
1800
TPCMQ48-13/48
TPCMQ48-13/48
13.6V
13.6V
2+1 Redundant
Non-Redundant
3
3
95.6A
143.4A
1300
1950
TPCMQ48-24/29
TPCMQ48-24/29
24V
24V
2+1 Redundant
Non-Redundant
3
3
58.4A
87.6A
1400
2100
TPCMQ48-27/26
TPCMQ48-27/26
27.2V
27.2V
2+1 Redundant
Non-Redundant
3
3
51.4A
77.1A
1400
2100
TPCMQ24-48/20
TPCMQ24-48/20
48V
48V
2+1 Redundant
Non-Redundant
3
3
41.6A
62.4A
2000
3000
TPCMQ24-54/18
TPCMQ24-54/18
54.4V
54.4V
2+1 Redundant
Non-Redundant
3
3
36.8A
55.2A
2000
3000
13.2 Non-Redundant Operation. Higher output current can be achieved by
operating the rack/shelf in a non-redundant mode as also seen in Table
13-1. However, in this case if a converter module fails, the load will lose
power since only part of the required current can be supplied by the re-
maining modules, and they will go into current limit. The failed converter
module, however, can be quickly replaced to restore the load current.
Note that the rack/shelf output current is limited to 150A, and therefore the
output of three 12V modules is not 162.6A as is their capability.
13.3 Multiple Parallel Shelf Operation. Multiple rack/shelves can also be
operated in parallel by interconnecting their current share terminals (J4 Pin
10). The total power can be expanded by several times. In this case N+1
redundant operation is achieved by reserving one module of the total for
redundancy. For example, if two full 19-inch rack/shelves are employed
with a total of six converter modules, then for 5+1 redundancy the full load
must be able to be carried by the output of five modules. In such applica-
tions each set of remote sense wires must be separately connected to
the point of load. See Figure 7 for a simplified illustration of two converter
rack/shelves connected in parallel.

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TPCMQ DC/DC CONVERTER SERIES
OPERATING MANUAL
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14.0 CONTROL & SUPERVISORY SIGNAL CONNECTIONS
14.1 Connections for control and supervisory signals are made at the rack/shelf
rear to connector J4, a standard 25-pin subminiature D connector (Posi-
tronics No. SD25F0S5OOX with FC752OD pins). The mating connector is
Positronics SD25M00OOZ with MC752OD pins.
14.2 The pin connections to J4 are shown in the table.
J4 SIGNAL CONNECTOR
J4 PIN CONNECTIONS
PIN FUNCTION PIN FUNCTION
1Inhibit 14 Input Power Fail -1
2Overtemp. Warning -1 15 Output Power Good -1
3Current Monitor -1 16 Input Power Fail -2
4Overtemp. Warning -2 17 Output Power Good -2
5Current Monitor -2 18 Input Power Fail - 3
6Overtemp. Warning -3 19 Output Power Good -3
7Current Monitor - 3 20 Module Present -1
8+5V Standby 21 Module Present -2
9SDA 22 Module Present -3
10 Current Share 23 - Sense
11 + Sense 24 Remote Adjust - 1
12 Remote Adjust -2 25 Remote Adjust - 3
13 SCL
NOTES: Standby return is connected to -Sense lead. Current rating of +5V standby is
250mA. All signals are referenced to -Sense lead. Pins 9 & 13 are I2C
functions when that option is fitted. When I2C is present, pins 2-7 and 14-19
have no function.
14.3 I2C Serial Data Bus. The I2C serial data bus (Option Z) is available on
both the TPCMQ48 and TPCMQ24 modules and rack/shelves. It must
be ordered on both. Pin 9 of J4 on the rack/shelf is the SDA (serial data)
output and pin 13 is the SCL (serial clock) output. The I2C data output
provides output voltage, output current, internal temperature and manufac-
turing data on each module (model no., serial no., etc.). When this option is
present, pins 2 to 7 and 14 to 19 do not function. For complete information
on the I2C option, please contact the factory.
Standard subminiature D
Connector
(Positronic SD25F0S5OOX
with FC7520D pins)

TPCMQ DC/DC CONVERTER SERIES
OPERATING MANUAL
15
CORPORATION
15.0 CONVERTER MODULE CONNECTIONS
If the converter module or modules are used separately from the rack/shelf or in
a user-configured rack/shelf, connections should be made to the hot-swap con-
nector on the back of the module with the functions shown in Figure 9 for the
TPCMQ48 and Figure 10 for the TPCMQ24. There is a Mating Interface Board
available for the TPCMQ48 module (but not the TPCMQ24), providing easy con-
nections for testing purposes.

CORPORATION
TPCMQ DC/DC CONVERTER SERIES
OPERATING MANUAL
16
Figure 9. TPCMQ48 Converter Module Pin Connections
Figure 10. TPCMQ24 Converter Module Pin Connections
CONNECTOR: POSITRONICS PCIB26W11M400A1
MATE: PCIB26W11F400A
NOTES: For unit to operate, pin 7 must be at logic LO or
shorted to pin 9. For proper operation the following pins
must be connected together: All V Out pins (1-3); all V Re-
turn pins (4-6). Pins 11, 12, 14, 17 & 19 carry I2C functions
when the I2C option is fitted.
MATING INTERFACE BOARD
Order Kit Number
009-0280-0009
PIN CONNECTIONS
PIN FUNCTION PIN FUNCTION
1+V Out 14 Output Power Good/ADD GA1
2+V Out 15 Input Power Fail
3+V Out 16 V Trim
4V Return 17 Overtemp. Warning/ADD GA0
5V Return 18 Current Share
6V Return 19 Current Monitor/ADD GA2
7Enable 20 +5V Standby
8+ Sense 21 Standby Return
9- Sense 22 Chassis Ground
10 Inhibit 23 Chassis Ground
11 Spare/SDA 24 -DC Input
12 Spare/SCL 25 -DC Input
13 - Sense 26 +DC Input
CONNECTOR: POSITRONICS PCIM37W16RM400A1
MATE: PCIM37W16RF400A1
NOTES: For unit to operate, pin 17 must be at logic LO or
shorted to pin 30. For proper operation the following pins
must be connected together: All +V Out pins (35-37); all -V
Out pins (32-34). Pins 24-28 carry I2C functions when the
I2C option is fitted.
PIN CONNECTIONS
PIN FUNCTION PIN FUNCTION
1-DC Input 20 Module Present
2-DC Input 21 N.C.
3-DC Input 22 Input Power Fail
4-DC Input 23 N.C.
5+DC Input 24 GA2
6+DC Input 25 GA1
7+DC Input 26 SCL
8+DC Input 27 SDA
9Chassis Ground 28 GAO
10 Chassis Ground 29 V. Adjust
11 N.C. 30 - Sense
12 Standby Return 31 + Sense
13 +5V Standby 32 -V Out
14 Output Power
Good
33 -V Out
15 Overtemp. Warning 34 -V Out
16 Inhibit 35 +V Out
17 Enable 36 +V Out
18 Current Share 37 +V Out
19 Current Monitor

TPCMQ DC/DC CONVERTER SERIES
OPERATING MANUAL
17
CORPORATION
16.0 DESCRIPTION OF RACK/SHELF CONTROL AND SUPERVISORY SIGNALS
SIGNAL PIN DESCRIPTION
Inhibit 1A logic LO or short to Pin 23 turns off all converter modules
in the rack/shelf. This input is referenced to -Sense, Pin 23.
Overtemp. Warn. - 1
Overtemp. Warn. - 2
Overtemp. Warn. - 3
2
4
6
A logic HI indicates an overtemperature condition inside the
indicated module. The HI occurs a few milliseconds before
the unit shuts down. This signal is referenced to -Sense, Pin
23.
Current Monitor - 1
Current Monitor - 2
Current Monitor - 3
3
5
7
An analog output voltage of the indicated module is pro-
portional to its output current. This signal is referenced to
-Sense, Pin 23.
+5 Standby Supply 8This is a +5V, 250mA output. It is referenced to the -Sense,
Pin 23.
Current Share 10
This is an analog control signal made up of the current
share signals of all converter modules connected together.
This pin is used to connect to Pin 10 of another identical
converter shelf to share output currents. Output currents
between shelves are shared within an accuracy of 10% of
full load current over a 50% to 100% load range. This signal
is referenced to -Sense, Pin 23.
+ Sense
- Sense
11
23
These remote sense leads should be connected as a
twisted pair to the respective + and - load points to provide
regulation at the point of load. Removal of the sense leads
transfers regulation control to the output terminals of the
converter shelf. The correct polarities must be maintained.
Input Power Good - 1
Input Power Good - 2
Input Power Good - 3
14
16
18
A logic LO indicates the DC input is present at each indicat-
ed module. A logic HI indicates DC input failure. This signal
is referenced to -Sense, Pin 23.
Output Power Good - 1
Output Power Good - 2
Output Power Good - 3
15
17
19
A logic LO indicates that the indicated module is operating
properly with output voltage in its controllable range. A logic
HI indicates the output is outside the -25 to +10% output
range for the converter, the unit has failed or is in current
limit. This signal is referenced to -Sense, Pin 23.