VICOR PFC Micro User Manual

USER GUIDE | UG:121

PFC Micro™
Power Factor Corrected AC-DC Switcher

Contents Page

Overview 1

Standard Features 2

Optional Features 2

Part Numbering 3

Mechanical Considerations 3

PFC Micro Dos and Don’ts 3

Technical Description 4

PFC Micro™ Quick

Install Instructions 5

PFC Micro™

Mechanical Drawings 7

Output Connections

for the PFC Micro™ 8

Output Connectors

for PFC Micro™ 9

Power Connections 9

User Interface Connections 11

Module Power Good

Status Mode 11

Single-Output

Power Supplies (Arrays) 15

Specifications 16

Output Power De-Rating 19

Current Share Boards –

Optional Feature 21

Overview

The PFC Micro is a low-profile switching power supply that combines the advantages of power factor
correction (PFC) and high power density. This guide covers both standard and rugged COTS (MI)
versions of the supply. A PFC Micro provides up to six isolated outputs (from two slots) and each slot
may accommodate the following Vicor DC-DC Converters:

VE-200™/VE-J00™ Series: 1 VE-200 or 2 VE-J00

Maxi/Mini/ Micro Series: 1 Maxi, 2 Minis, or 3 Micros

The use of these converters gives the PFC Micro the inherent power flexibility typical of all Vicor
products. Accepting input voltages of 85 – 264VAC, and 100 – 300VDC, the PFC Micro can provide
up to 800W in a package size of 1.86 x 5.06 x 10.40in [47,3 x 128,5 x 264,1mm]. The PFC Micro is
factory-configured to meet user output requirements.

UG:121 Page 1

Standard Features

 Power Factor Correction: Typically 0.98 (>75% Load)
 Universal Input: 85 – 264VAC, 47 – 500Hz, or 120 – 300V
 Power Output: 800W at 230VAC (200VAC minimum input); 500W at 115VAC (100VAC minimum input)
 Up to six isolated outputs (two slots)
 Fan cooled
 Full power to 45°C; half power at 65°C
 Soft start for limiting inrush current
 Conducted EMI: FCC Class A; EN55022 Class A (consult factory)
 Harmonic Distortion to EN61000-3-2
 AC Power OK status signal
 RoHS compliant available
 Output Sequencing and General Shut Down
 Autosense (Refer to pages 6 and 14 for more information on Autosense)
 Output overcurrent protection on all outputs
 Output overvoltage protection and output overtemperature limiting

(not applicable when using VI-J00)

 Ride-through (hold-up) time: >20ms at 500W load
 Size: 1.86 x 5.06 x 10.4in [47,3 x 128,5 x 264,1mm]
 Safety Agency Approvals: CE Marking, TÜV CUE (certain models may not have all listed approvals)
 Uses 300VDC input VI-200™/VI-J00™ modules and/or 375VDC input Maxi/Mini/Micro modules
 Power good status signal when Maxi, Mini, or Micro modules used

DC

Optional Features

 I/T/H-Grade output converters
 Current Share Board for unit to unit power sharing - see pages 22 – 23
 Connector kits (# 19-130044)

 MI Chassis Specific
 Mil-STD 810 for Shock and Vibration
 Mil-STD 704 and 1399 for overvoltage and transients
 –40°C operation
 Conformal coating - contact factory

UG:121 Page 2

Part Numbering

PFC Micro PCx1-x2 x3 (-x4)-xxxx-x

ex: PC6-06-5012-G

x1 = number of outputs

x2 = number of VI-200™/VI-J00™ modules

x3 = number of Maxi/Mini/Micro modules

(-x4 ) = optional Factory assigned

xxxx = sequential number assigned by Vicor

x5 = optional versions

Note: x5 = MI for rugged chassis, = MC for rugged chassis with conformal coating

5

Mechanical Considerations

The PFC Micro™ can be mounted on one of three surfaces using standard 8-32 or 4mm screws.
Maximum allowable torque is 5in.lbs and the maximum penetration of 0.25in [6mm] on the sides and

0.125in [3mm] on the bottom.

When selecting a mounting location and orientation, the unit should be positioned so air flow is not
restricted. Maintain a 2in [5,1cm] minimum clearance at both ends of the PFC Micro and route all cables
so air flow is not obstructed. The power supply draws air in at the fan side/AC input side and exhausts
air out the load side. If air-flow ducting is used, avoid sharp turns that could create back pressure. The
fan moves approximately 10CFM of air.

Avoid excessive bending of output power cables after they are connected to the output terminals.
For high-current outputs, use cable ties to support heavy cables and minimize mechanical stress on
connectors. Be careful not to short-out to neighboring outputs. The maximum torque recommended on
output nuts is 10in.lbs.

Avoid applications in which the unit is exposed to excessive shock or vibration levels as the unit
is designed primarily for office type equipment. In such applications, a shock-absorbing mount
design is required.

PFC Micro Dos and Don’ts

 Do not restrict airflow to the unit. The cooling fan draws air into the unit and forces it out at

the output power terminals. A minimum of two inches in front and behind the supply should be
maintained in order to prevent air obstructions.

 Run the output (+/–) power cables next to each other to minimize inductance.
 Do not attempt to repair or modify the power supply in any manner. In the event of problems,

contact Customer Service at 1-800-735-6200.

 Insert proper fault protection at power supply input terminals (i.e., a fuse).
 Use proper size wires to avoid overheating and excessive voltage drop.
 Output voltages over 60VDC, whether from individual modules or series arrays, are considered

as hazardous secondary outputs under UL 60950. Appropriate care must be taken in design
implementation of the supply.

UG:121 Page 3

Technical Description

The PFC Micro™ consists of an off-line single-phase, power-factor-corrected front end, EMI filter,
cooling fan, customer interface, power supply control circuit, associated housekeeping circuits and a
selection of Vicor VI-200™/VI-J00™ and/or Maxi DC-DC converters.

Input AC mains voltage is applied to input connector MB1J1. The input current is passed through an
EMI filter designed to meet conducted noise limit "A" specifications of FCC Part 15.

At start up, inrush current is limited by a PTC thermistor. The PTC is shunted out shortly after initial
power up by a DC bus voltage sense circuit driving a relay. After rectification, the input voltage is put
through a boost converter that keeps the AC input current sinusoidal and synchronized with the input
AC voltage (in compliance with EN61000). The boost converter delivers a regulated input to the hold-up
capacitors and a high-voltage backplane. The backplane supplies power to the DC-DC converters that
provide the desired low voltage regulated outputs.

Output voltage conversion is achieved by the Vicor family of Zero-Current Switching (ZCS) DC-DC
converters. These are forward converters in which the main switching element switches at zero current.
This patented topology has a number of unique attributes: low switching losses; high-frequency
operation, resulting in reduced size for magnetics and capacitors; excellent line and load regulation;
wide adjustment range for output; low EMI/RFI emission and high efficiencies.

At initial power up, the PFC Micro outputs are disabled to limit the inrush current and to allow the
DC bus potential to settle out to the correct operating level. A low-power flyback converter converts
the high-voltage DC bus into regulated low voltage to power the internal housekeeping circuits and
DC cooling fan.

The internal housekeeping VCC comes up within 1s after the application of input power. Once the
high-voltage bus is within operating limits, the AC Power OK signal asserts to a TTL "1," indicating the
input power is OK, and the power outputs will come up 250ms later.

An output enable / disable function is provided to control Vicor DC-DC converters. If the Enable/Disable
control pin is pulled low, the modules output is disabled. The nominal delay associated for an output to
come up when measured from release of the Enable/Disable pin is 9 – 12ms. The General Shut Down
function controls all outputs simultaneously and works in a similar manner.

Figure 1

PFC Micro architecture

Input

Line Filter

Customer

Interface

Bridge
Rectifier

Soft Start

Circuit

Power Supply
Control

Fan

Boost Converter

PFC Control

Enable/Disable -Power Good Read

Isolated
Housekeeping

Power Supply

Output Card #1

Output Card #2

Power
Output

Power
Output

UG:121 Page 4

MBJ1-5 PIN

L1

Not Connected

Not Connected

GND

MAXI MODULE

(2 ISOLATED OUTPUTS)

-

S1

+

10-32 STUDS

-

S2

+

S1/S2 J1

18 17 16 15 14 13 12 11 10

9 8 7 6 5 4 3 2 1

S1/S2 J1 (18 Pin)

- - + - T + - + +

- + + T - + - - +

S1/S2J1

16 15 14 13 12 11 10 9

8 7 6 5 4 3 2 1

S1/S2J1 (16 Pin)

- + T - +

- + T - + T - +

N/C - +

PFC Micro™ Quick Install Instructions

(For Mechanical Drawing, see page 7)

Mounting the PFC Micro

 The PFC Micro can be mounted on either of three sides.
 Use #8-32 or 4mm mounting screws. Maximum penetration should not exceed 0.25in [6 mm]

on the side and 0.125in [3mm] on the bottom.

 Maintain 2in [5,1cm] clearance at both ends of power supply for air flow.

Input Connections

Input Power MBJ1

 Apply input AC power connector MBJ1.
 Maximum torque is 5in.lbs.

L2/N

 A fuse or circuit breaker in the input line is necessary for safety requirements (10A).
 Molex mating receptacle 39-01-4051, terminals 39-00-0090, crimp tool Molex # 11-01-0199.

Output Connections

Note: Outputs with current molex connectors are limited to 9A/pin (27A per output).
A PFC Micro with DIFFERENT Molex connectors capable of 40A is available. Contact factory.

Power Connections

Installing bus bars on output studs (when full-size module is used):

 The right stud is Positive and the left stud is the Return on single output cards.
 Remove the nut and place ring lug over output stud.
 Replace and tighten the nut to a torque of 10 inch pounds.

Do Not over-tighten nuts.

Installing power connectors with 18-pin Molex connectors (when half-size module used):

 S1/S2 J1-7, S1/S2 J1-8 and S1/S2 J1-16 are Positive for output #1, while pins

S1/S2 J1-9, S1/S2 J1-17 and S1/S2 J1-18 are the Returns.
S1/S2 J1-1, S1/S2 J1-10 and S1/S2 J1-11 are Positive for output #2, while pins
S1/S2 J1-2, S1/S2 J1-3 and S1/S2 J1-12 are the Returns.

 For this 18-pin housing, use Molex mating receptacle #39-01-2180 with #39-00-0039 terminals.
 Attach 18 – 24AWG stranded wire using Molex tool #11-01-0197.

Installing power connectors with 16-pin Molex connectors (when quarter-size modules used):

 S1/S2 J1-7 and S1/S2 J1- 15 are Positive for output #1, while pins

S1/S2 J1-8 and S1/S2 J1- 16 are the Return.
S1/S2 J1-4 and S1/S2 J1-12 are Positive for output #2, while pins
S1/S2 J1-5 and S1/S2 J1- 13 are the Return.
S1/S2 J1-1 and S1/S2 J1-9 are Positive for output # 3, while pins
S1/S2 J1-2, and S1/S2 J1-10 are the Returns.

 For this 16-pin housing, use Molex mating receptacle #39-01-2160 with #39-00-0039 terminals.
 Attach 18 – 24AWG stranded wire using Molex tool #11-01-0197.

UG:121 Page 5

1
2
3

Sense Connections

Trim Pin

+REMOTE SENSE

–REMOTE SENSE

Pin

S1/S2 J2

S1/S2 J1

18 17 16 15 14 13 12 11 10

9 8 7 6 5 4 3 2 1

S1/S2 J1 (18 Pin)

- - + - T + - + +

- + + T - + - - +

Sense Connections

Sense connections on output connections with studs:

 The PFC Micro™ is shipped with Autosense installed

(For more information on Autosense, refer to page 14)

 For remote sense, connect remote-sense wires to remote-sense/trim-pin access connector S1/S2 J2.
 Connector pin S1/S2 J2-2 is the +SENSE and

S1/S2 J2-3 is the –SENSE.

 Use Molex mating receptacle #50-57-9403 with #16-02-0103 terminals.
 Attach terminals to 24 – 30AWG stranded twisted pair wire using Molex tool #11-01-0208.
 Attach opposite end of sense lines to their respective outputs to point where regulation is desired.

Verify that sense lines are not cross-connected.

Sense connections on output connections with 18-pin Molex connectors:

 The PFC Micro is shipped with Autosense installed

(For more information on Autosense, refer to page 14)

 If remote sense is desired, connect remote sense wires to sense lines of Connector S1/S2 J1.
 Connector pin S1/S2 J1- 13 is the +SENSE and

S1/S2 J1-15 is the –SENSE for output #1.
S1/S2 J1-4 is the +SENSE and
S1/S2 J1-5 is the –SENSE for output #2.

 Use Molex mating receptacle #39-01-2180 with #39-00-0039 terminals.
 Attach 18 – 24AWG stranded twisted pair wire using Molex tool #11-01-0197.

Note: Remote sense is NOT available for triple-output slots.

Trim Connection with Batmod

Pin

1

Current Trim Access

2
3

S1/S2 J2

Voltage Trim
Current Monitor

S1/S2 J1

18 17 16 15 14 13 12 11 10

9 8 7 6 5 4 3 2 1

S1/S2 J1 (18 Pin)

- - + - T + - + +

- + + T - + - - +

S1/S2J1

16 15 14 13 12 11 10 9

8 7 6 5 4 3 2 1

S1/S2J1 (16 Pin)

- + T - +

N/C - +

- + T - + T - +

CBJ3 E/D INTERFACE CONNECTOR

MATING CONNECTOR: (WESTCOR KIT P/N: 19-130044)
HOUSING: MOLEX (50-57-9412)
SOCKET CRIMP 24-30 AWG: MOLEX (16-02-0097)
CRIMP TOOL: MOLEX (11-01-0209)

PIN DESCRIPTION

CBJ3-1 SGND
CBJ3-2 PGR
CBJ3-3 ACOK
CBJ3-4 ED6
CBJ3-5 ED5
CBJ3-6 ED4
CBJ3-7 ED3
CB3-8 ED2
CBJ3-9 ED1
CBJ3-10 GSD
CBJ3-11 PGDV
CBJ3-12 +5 VS

Trim Connections

Trim connections on output with studs:

 S1/S2 J2-1 provides trim access.
 Use Molex mating receptacle #50-57-9403 with #16-02-0103 terminals.
 Attach 18 – 24AWG stranded wire using Molex tool #11-01-0208.

Trim connections on connector with 18-pin molex connectors:

 S1/S2 J1-6 provides trim access for output #1, and

S1/S2 J1-14 provides trim access for output #2.

 Use Molex mating receptacle #39-01-2180 with #39-00-0039 terminals.
 Attach 18 – 24AWG stranded wire using Molex tool #11-01-0197.

Trim connections on connectors with 16-pin Molex connectors:

 S1/S2 J1-14 provides trim access for output #1, and

S1/S2 J1-6 provides trim access for output #2, and
S1/S2 J1-3 provides trim access for output #3.

 Use Molex mating receptacle #39-01-2180 with #39-00-0039 terminals.
 Attach 18 – 24AWG stranded wire using Molex tool #11-01-0197.

Interface Connections

 CBJ3-1 is Signal Ground,

CBJ3-2 is Power Good Read and
CBJ3-3 is AC-OK.

 CBJ3-4-9 are Enable/Disable,

CBJ3-10 is General Shut Down,
CBJ3-11 is Power Good Data Valid (PGDV) and
CBJ3-12 is +5 VS.

 Use Molex mating receptacle #50-57-9412 with #16-02-0097 cinch pins.
 Attach terminals to 24 – 30AWG stranded wire.

UG:121 Page 6

PFC Micro™ Mechanical Drawings

10-32 STUDS

-

S1

18 PIN CONNECTOR

S1

SEE PAGE 9 FOR DETAILED OUTPUT

CONNECTION INFORMATION .

1

1

-

+

S2

1

S2

1

+

MAXI

MODULES)

PICTURED (TWO

DUAL OUTPUT UNIT

MODULES)

(FOUR MINI

QUAD OUTPUT

UNIT PICTURED

S1/S2 J2 REMOTE SENSE/TRIM PIN

ACCESS CONNECTOR
1

PFC MICRO

31.041.22190.507.50032.691.29

16 PIN CONNECTOR

3

6.35±0.51.25±.024.09.16 260.0210.24

47.291.86

4

4

MOUNTING HOLES; 2 PLACES

USE 8-32 X 0.25 or M4 X 6MM MAX LENGTH

FROM OUTSIDE OF UNIT

32.691.29 190.507.500

S1

1

128.525.06

AIR

FLOW

88.903.500

S2
1

MICRO

MODULES)

SIX OUTPUT UNIT

PICTURED (THREE

3

264.1110.40 18.03.71

270.46±0.5110.65±.02

2

NOTE: FOR INCREASED OUTPUT POWER, CURRENT SHARE BOARDS ARE

AVAILABLE.

WITH VI-200/VI-J00 MODULES CSB-01

WITH MAXI/MINI/MICRO MODULES CSB-02

(SEE PAGE 19 AND 20 FOR MORE INFORMATION ON CURRENT SHARE

4

MOUNTING HOLES; 4 PLACES

USE 8-32 X 0.12 or M4 X 3MM MAX LENGTH

FROM OUTSIDE OF UNIT

MOUNTING HOLES; 2 PLACES

31.041.22

USE 8-32 X 0.25 or M4 X 6MM MAX LENGTH

FROM OUTSIDE OF UNIT

BOARDS.

All Westcor power supplies can now be configured online

using VSPOC, the online configurator tool available on vicorpower.com

32.691.29 190.507.500

PIN-1

CBJ3 (12 PIN)

PIN REF DESCRIPTION

CBJ3 INTERFACE CONNECTOR

CBJ3-1 SGND SIGNAL GROUND

CBJ3-2 PGR POWER GOOD/READ

CBJ3-3 ACOK AC POWER OK

CBJ3-4 ED6 ENABLE/DISABLE S2M3

CBJ3-5 ED5 ENABLE/DISABLE S2M2

CBJ3-6 ED4 ENABLE/DISABLE S2M1

CBJ3-7 ED3 ENABLE/DISABLE S1M3

1

CBJ3-8 ED2 ENABLE/DISABLE S1M2

UG:121 Page 7

CBJ3-9 ED1 ENABLE/DISABLE S1M1

CBJ3-10 GSD GENERAL SHUTDOWN

CBJ3-11 PGDV POWER GOOD/DATA VALID

CBJ3-12 Vcc +5V@40mA

MATING CONNECTOR:

HOUSING: MOLEX (50-57-9412)

SOCKET CRIMP 24-30 AWG: MOLEX (16-02-0097)

2

CRIMP TOOL: MOLEX (11-01-0209)

MBJ1 A/C INPUT

MATING CONNECTOR:

HOUSING: MOLEX (39-01-4051)

TERMINAL: MOLEX (39-00-0090)

CRIMP TOOL: MOLEX (11-01-0199)

L2/N

L1

GND

MBJ1 (5 PIN)

N/C

N/C

REFERENCE DESIGNATIONS

MB MOTHER BOARD

CB CONTROL BOARD

1

NOTES: UNLESS OTHERWISE SPECIFIED

WITH OPTIONAL BUS BAR

A COMPLETE SET OF MATING CONNECTORS

IS AVAILABLE FOR PURCHASE BY SPECIFYING

S(x) SLOT NUMBER

WESTCOR CONNECTOR KIT P/N: 19-130044.

M(x) MODULE NUMBER

2

3

DIMENSIONS SHOWN ARE FROM BOTTOM SURFACE

MOUNTING PEMNUTS EXTEND .010 PAST BOTTOM

SURFACE.

4

Output Connections for the PFC Micro™

A. OUTPUT STUDS - SINGLE OUTPUT (when populated with full size module)

–VOUT

10-32 OUTPUT STUDS

MATING CONNECTOR:
HOUSING: MOLEX (50-57-9403)
TERMINAL FEM CRIMP 24-30 AWG: MOLEX (16-02-0103)
USE CRIMP TOOL: MOLEX (11-01-0208)

+VOUT

SxJ2 REMOTE SENSE/TRIM
PIN CONNECTOR

–SENSE

3

2

+SENSE

1

TRIM

B. 18 PIN MOLEX CONNECTOR - SINGLE OR DUAL OUTPUTS (when populated with half size modules)

9

18

8

17

7

16

15

6

5

14

13

4

12

3

2

11

10

1

SxJ1 (18 PIN OUTPUT, REMOTE SENSE
AND TRIM PIN CONNECTOR)

PIN DESCRIPTION PIN DESCRIPTION

1 +VOUT M2
2 –VOUT M2
3 –VOUT M2
4 +SENSE M2
5 –SENSE M2
6 TRIM M1
7 +VOUT M1
8 +VOUT M1
9 –VOUT M1

10 +VOUT M2
11 +VOUT M2
12 –VOUT M2
13 +SENSE M1
14 TRIM M2
15 –SENSE M1
16 +VOUT M1
17 –VOUT M1
18 –VOUT M1

MATING CONNECTOR:
18 PIN HOUSING: MOLEX (39-01-2180)
TERMINAL FEM CRIMP 18-24 AWG: MOLEX (39-00-0039)
USE CRIMP TOOL: MOLEX (11-01-0197)

Note: The current molex connectors are limited
to 9A/pin (27A per output). A PFC Micro with
DIFFERENT molex connectors that are capable
of 40A is available. Contact factory!

C. 16 PIN MOLEX CONNECTOR - SINGLE, DUAL, TRIPLE OUTPUTS (when populated with quarter size modules)

8

16

15

7

6

14

5

13

4

12

3

11

2

10

1

9

*SxJ1 (16 PIN OUTPUT, REMOTE SENSE
AND TRIM PIN CONNECTOR)

PIN DESCRIPTION PIN DESCRIPTION

1 +VOUT M3
2 –VOUT M3
3 TRIM M3
4 +VOUT M2
5 –VOUT M2
6 TRIM M2
7 +VOUT M1
8 –VOUT M1

9 +VOUT M3
10 –VOUT M3
11 N/C
12 +VOUT M2
13 –VOUT M2
14 TRIM M1
15 +VOUT M1
16 –VOUT M1

MATING CONNECTOR:
16 PIN HOUSING: MOLEX (39-01-2160)
TERMINAL FEM CRIMP 18-24 AWG: MOLEX (39-00-0039)
USE CRIMP TOOL: MOLEX (11-01-0197)

UG:121 Page 8

Output Connectors for PFC Micro™

(Part #19-130044. Available for purchase from Vicor.)

Item Qty Description Vendor #1 Part #

1 3 HOUSING 3 POS .100 CTR W/LATCH MOLEX 50-57-9403

2 8 TERMINAL FEM CRIMP 22-24AWG SEL GOLD MOLEX 16-02-0103

** CRIMP TOOL FOR ITEM 2 MOLEX 11-01-0208

3 2 HOUSING 16 POS .165 CTRS W/LATCH MOLEX 39-01-2160

4 2 HOUSING 18 POS .165 CTRS W/LATCH MOLEX 39-01-2180

5 40 TERMINAL FEM CRIMP 18-24AWG SEL GOLD MOLEX 39-00-0039

** CRIMP TOOL FOR ITEM 5 MOLEX 11-01-0197

6 40 TERMINAL FEM CRIMP 16AWG SEL GOLD MOLEX 45750-3211

** CRIMP TOOL FOR ITEM 6 MOLEX 11-01-0199

7 1 HOUSING 5 POS .165 CTRS W/LATCH MOLEX 39-01-4051

8 5 TERMINAL FEM CRIMP 16AWG SEL GOLD MOLEX 45750-3211

** CRIMP TOOL FOR ITEM 8 MOLEX 11-01-0199

9 1 HOUSING 12 POS .10 CTRS W/LATCH MOLEX 50-57-9412

10 14 TERMINAL FEM CRIMP 24-30AWG SEL GOLD MOLEX 16-02-0097

** CRIMP TOOL FOR ITEM 10 MOLEX 11-01-0209

** ITEMS FOR REFERENCE ONLY (NOT INCLUDED IN KIT)

Figure 2

Input power terminal MBJ1

Power Connections

Chassis Input Power Terminals (MBJ1)

Input AC power is applied through connector MBJ1 using Molex mating connector 39-01-4051.
Use 16AWG wire with Molex Socket Pin 39-00-0090 and Crimp Tool 11-01-0199.

A fault-clearing device, such as a fuse or circuit breaker, with a maximum 10A rating at the power
supply input is required for safety agency compliance. It should be sized to handle the start-up inrush
current of 8.5A peak at 115VAC and 17A peak at 230VAC.

MBJ1 A/C INPUT

MATING CONNECTOR: (WESTCOR KIT P/N: 19-130044)
HOUSING: MOLEX (39-01-4051)
SOCKET CRIMP 16 AWG: MOLEX (39-00-0090)
CRIMP TOOL: MOLEX (11-01-0199)

Not Connected

Not Connected

CBJ3-12 PIN

MBJ1 (5 PIN)

L1

L2/N

GND

PIN 1

UG:121 Page 9

Figure 3

Output power connections

Output Power Connections

There are three types of output power terminals available in the PFC Micro™. Each slot has one of the
following configurations: 10-32 plated steel bolts from outputs using full-size converters, an 18-pin
Molex connector for outputs using half size converters and a 16-pin Molex connector for outputs using
quarter size converters.

Note: The Molex connectors are limited to 9A/pin (27A/output).

The positive polarity of the single-output termination is the right bolt when viewed from the output
end. Each power output is isolated, so outputs of positive or negative polarity can be configured
through proper selection of the output reference terminal.

In order to minimize parasitic cable inductance and reduce EMI, the output power cables should be
routed in close proximity to one another and large current loops should be avoided. To avoid excessive
voltage drop, do not undersize power cables, especially for high-current outputs. Do not bulk input
AC wires with the output wires because this can couple output noise into the input wires which can
increase EMI. Excessive cable inductance coupled with large capacitive loading can introduce instability
in switching power supplies. This problem can be avoided with proper system design. Consult the Vicor
Applications Engineering Department for assistance with applications that use long cable lengths and
excessive load capacitance.

16 15 14 13 12 11 10 9

8 7 6 5 4 3 2 1

S1/S2 J1 REMOTE SENSE/OUTPUT CONNECTORS

MATING CONNECTORS: (WESTCOR KIT P/N: 19-130044)
16 PIN HOUSING: MOLEX (39-01-2160)
SOCKET CRIMP 18-24 AWG: MOLEX (39-00-0039)
CRIMP TOOL: MOLEX (11-01-0197)

S1/S2 J1 (16 PIN, TRIPLE MICRO MODULES)

PIN DESCRIPTION

S1/S2 J1-1 +V OUT M3
S1/S2 J12 -V OUT M3
S1/S2 J1-3 TRIM M3
S1/S2 J1- 4 +V OUT M2
S1/S2 J1-5 -V OUT M2
S1/S2 J1-6 TRIM M2
S1/S2 J1- 7 +V OUT M1
S1/S2 J1-8 -V OUT M1

PIN DESCRIPTION

S1/S2 J1-9 +V OUT M3
S1/S2 J1-10 -V OUT M3
S1/S2 J1-11 N/C
S1/S2 J1-12 +V OUT M2
S1/S2 J1-13 -V OUT M2
S1/S2 J1-14 TRIM M1
S1/S2 J1-15 +V OUT M1
S1/S2 J1-16 -V OUT M1

128.525.06

47.291.86

TRIPLE MICRO

MODULES (6 OUTPUTS)

S1

S2

Note: The molex connectors are limited
to 9A/pin (27A per output)

MODULES (4 OUTPUTS)

S1

S1

DUAL MINI

S1/S2 J2-3 PIN (VI-200/MAXI MODULE)

3

- REMOTE SENSE

2

+ REMOTE SENSE

1

Trim Pin

10-32 STUDS

18 17 16 15 14 13 12 11 10

9 8 7 6 5 4 3 2 1

MAXI MODULE

(2 ISOLATED OUTPUTS)

-

S1

+

-

S2

+

S1/S2 J1 REMOTE SENSE/OUTPUT CONNECTORS

MATING CONNECTORS: (WESTCOR KIT P/N: 19-130044)
18 PIN HOUSING: MOLEX (39-01-2180)
SOCKET CRIMP 18-24 AWG: MOLEX (39-00-0039)
CRIMP TOOL: MOLEX (11-01-0197)

S1/S2 J1 (18 PIN, DUAL MINI & VI-J00 MODULES)
PIN DESCRIPTION

S1/S2 J1- 1 +V OUT M2
S1/S2 J1-2 -V OUT M2
S1/S2 J1-3 -V OUT M2
S1/S2 J14 + SENSE M2
S1/S2 J15 - SENSE M2
S1/S2 J16 TRIM M1
S1/S2 J17 +V OUT M1
S1/S2 J1 8 +V OUT M1
S1/S2 J19 -V OUT M1

S1/S2 J2 REMOTE SENSE/TRIM PIN ACCESS CONNECTOR

MATING CONNECTOR: (WESTCOR KIT P/N: 19-130044)

SOCKET CRIMP 24-30 AWG: MOLEX (16-02-0103)

PIN DESCRIPTION

S1/S2 J110 +V OUT M2
S1/S2 J111 +V OUT M2
S1/S2 J1 12 -V OUT M2
S1/S2 J113 + SENSE M1
S1/S2 J114 TRIM M2
S1/S2 J115 - SENSE M1
S1/S2 J116 +V OUT M1
S1/S2 J117 - OUT M1
S1/S2 J118 - OUT M1

HOUSING: MOLEX (50-57-9403)

CRIMP TOOL: MOLEX (11-01-0208)

UG:121 Page 10

User Interface Connections

Signal Ground (CBJ3-1)

Signal Ground on CBJ3-1 is an isolated secondary ground reference for all CBJ3 interfacing signals. This
is not the same as Earth Ground on input power connector MBJ1.

Bidirectional I/O lines (CBJ3-4 to CBJ3-9)
(Enable/Disable or Module Power Good Status)

Enable/Disable Mode

Enable/Disable mode is the default condition for these I/O lines. In this mode, the control pins allow
the outputs to be sequenced either ON or OFF. To disable a module, the E/D pin should be pulled low
to less than 0.7V with respect to signal ground. The E/D lines will typically source 250mA (1mAmax.)
under this condition. To enable a module, a E/D pin should be open circuited or driven high to a
logic-high voltage of 3.5V (40mA typical) or greater not to exceed 5V. (When one has a two module
array, use GSD to disable the output instead of using E/D.)

The correspondence between a module and its E/D line as seen from the output end of the power
supply goes from left to right. The PFC Micro™ power supply is a two-slot box. Slot 1 is the left slot and
Slot 2 is the right slot. See Table 1. E/D1, E/D2, E/D3 correspond with VOUT M1, VOUT M2 and VOUT
M3 on slot 1. E/D4, E/D5, E/D6 correspond with VOUT M1, VOUT M2 and VOUT M3 on slot 2.

Table 1

Enable/Disable mode

Module

Maxi X X

Mini X X X X

Micro X X X X X X

VI-200™ X X

VI-J00™ X X X X

E/D1 E/D2 E/D3 E/D4 E/D5 E/D6

Slot 1 Slot 2

Module Power Good Status Mode

The power supply will enter the Power Good status mode when logic high (50mA typical) is applied to
Power Good Read (PGR) pin (CBJ3-2). After transitioning to PGR mode the I/O lines (CBJ3-4 to CBJ3-9)
will be outputs and will give a onetime readout of the associated module status. These outputs give an
indication of the status of the modules of the power supply at the time of transition to PGR. A TTL "1"
(>3.5V) on a line indicates the module is ON and functioning properly and a TTL "0" (<0.7V) indicates
the module is either OFF or is not functioning properly. The correspondence between the module and
the Power Good status of that module is the same as between a E/D pin and its module. This mode
does NOT constantly monitor the module status and must be re-triggered by transitioning the PGR pin
from logic-low to logic-high to get current module status.

Procedurally, certain guidelines must be followed when using this feature. Upon application of a
logic-high on the Power Good Read (PGR) pin, the user must change its E/D interface (CBJ3-4 to
CBJ3-9) from outputs to inputs within 3ms. The Power Good status data will be valid on the E/D lines
when the Power Good Data Valid (PGDV) pin (CBJ3-11) asserts to a logic-high. The Power Good status
measurement takes typically 200ms. While in the Power Good Read mode (PGR=1) the individual
shut-down lines are not functional. However, General Shut Down (GSD) is functional. Leaving the Power
Good Read mode is accomplished by removing the logic-high or applying a logic-low (<0.7V) to the
Power Good Read (PGR) pin (CBJ3-2). The user must change its E/D interface (CBJ3-4 to CBJ3-9) from
inputs to outputs between 1 and 4ms of the time the PGR-low is applied to pin CBJ3-2.

Note: If any model is disabled by the user when a Power Good Read is requested (PGR=1), that module will remain
off during the Power Good Read and status of said module will be power not good (<0.7V). Power Good Read status
data on open E/D lines are not valid. An open E/D line is a E/D pin where there is no module associated with said E/D
line (i.e., A power supply with two Maxi modules, data on E/D2, E/D3 and E/D5 and E/D6 are NOT valid.

The Power Good Status mode feature is only valid when Maxi, Mini and/or Micro modules are used.

The following page shows examples of triggering PGR with a 1Hz square while monitoring PGDV and a
selected E/D line with a good module and a defective one.

UG:121 Page 11

Figure 4

Power Good Read

with good module

Figure 5

Power Good Read

with defective module

UG:121 Page 12

Figure 6

Auxiliary V

General Shut Down/GSD (CBJ3-10)

The GSD control pin on CBJ3-10 allows simultaneous shut down of all outputs. This pin must be pulled
down to less than 0.7V, and will typically source 250mA (1mA maximum) to shut down all outputs. The
GSD pin should be open circuited or driven high to a logic-high voltage of 3.5V or greater when not in
use, or when the outputs are to be enabled. Do not apply more than 5V to this input.

AC OK (CBJ3-3)

AC OK is an active high TTL compatible signal and provides a status indication of the AC input power.
It is on pin CBJ3-3 and is capable of sinking 5mA maximum. This signal switches to a TTL "1" when the
high-voltage bus exceeds low-line condition during turn-on. Upon loss of input power, the bus voltage
will drop, causing the AC OK signal to go low. Typically, a 3ms holdup time is provided for a 500W load
following the loss of the AC OK signal.

Auxiliary VCC +5V/40mA (CBJ3-12)

The VCC on CBJ3-12 is an auxiliary 5V regulated power source. It is +5VDC ±5% with respect to signal
ground and can supply 40mA maximum. It is capable of withstanding a short, but shorted user
interface functionality will be lost.

CC

CBJ3

78M05

+5V/40mA

CBJ3-12

Auxiliary V

CC

0.1µF

CBJ3-1

Signal Ground

Power Good Read (PGR, CBJ3-2)

This pin initiates the Power Good Read sequence. A logic-high applied to this pin will cause the power
supply to enter the Power Good Read status mode. In this mode, the I/O lines (CBJ3-4 to CBJ3-9) will be
outputs. These outputs give an indication of the status of the modules of the power supply. A high on
an I/O line (CBJ3-4 to CBJ3-9) indicates a module is ON and functioning and a low indicate the module
is OFF or in a fault condition. The Power Good status data will be valid on the ED lines
(CBJ3-4 to CBJ3-9) when the Power Good Data Valid (PGDV) pin (CBJ3-11) asserts a logic-high. Applying
a logic-low or opening the PGR pin puts the power supply back in the enable/disable mode. Instructions
for using this function are on page 11 under module Power Good status mode.

Power Good Data Valid (PGDV- CBJ3-11)

Upon entering the Power Good Read status mode (PGR=1, CBJ3-2), the data will not be valid on the
I/O lines (CBJ3-4 to CBJ3-9) until the PGDV pin asserts itself logic-high. This pin can source up to 5mA.
When this pin is logic-low, Power Good status data is not valid or the power supply is not in the Power
Good Read status mode.

UG:121 Page 13

Figure 7

Remote sense

+SENSE/–SENSE (S1/S2 J2)

The sense lines for the outputs are shipped from the factory with Autosense. Autosense provides the
user with automatic sensing of the outputs. With Autosense, the PFC Micro™ will automatically operate
in a remote-sense mode when the remote-sense connections are made. But in the event that the
remote sense is not connected or needed, no local-sense selection is necessary – simply hook up the
outputs and the PFC Micro will automatically operate in local-sense mode.

In the local-sense mode (remote-sense lines not connected), the power supply will regulate the output
at the output terminals. The voltage appearing at the load may drop slightly due to voltage drop in
the power cables. If it is necessary to compensate for voltage drop along the output power cables, the
output can be trimmed up or configured for remote sense. Use stranded twisted pair 20 – 22AWG
wire for the remote-sense lines. Remote sense can compensate for a voltage drop of up to 0.5V, or

0.25V on each leg.

The sense connector for a single output board is a 3-pin connector providing the +SENSE connection
on S1/S2 J2-2 and the –SENSE connection on S1/S2 J2-3. The sense connector for a dual output board
is provided on the 18-pin output connector that also provides the output and trim connections. +SENSE
and –SENSE for the first output are located on S1/S2 J1-13 and S1/S2 J1-15, respectively. +SENSE and
–SENSE for the second output are located on S1/S2 J1-4 and S1/S2 J1-5, respectively. Remote sense is
not available for triple-output configurations.

+OUT

+SENSE

Table 2

Module internal

reference voltages and

Thevenin resistances

Load

–SENSE

–OUT

Use 20-22AWG
Twisted Pair Wires

External Trim (S1/S2 J2)

The trim pin at S1/S2 J2 is referenced to the –SENSE pin and can be used for external control of the
output voltage. For triple output cards, the Trim pins are available on S1/S2 J2-14, S1/S2 J2-6 and S1/S2
J2-3 for outputs 1, 2 and 3 respectively. For dual-output cards, the trim pins are available at S1/S2 J2-6
and S1/S2 J2-14 for outputs 1 and 2, respectively. For a single-output card, the trim pin is S1/S2 J2-1.
A 10% increase to the trim pin voltage will result in a 10% increase in output voltage. Reducing the
trim-pin voltage by 10% will result in a 10% decrease in output voltage.

Output Module

VI-200™/VI-J00™ ≥ 3.3V

VI-200/VI-J00 < 3.3V

Maxi (Predefined)

Maxi (User Defined)

V

REF

2.50V 10.0kΩ

0.97V 3.88kΩ

1.23V 1.0kΩ

1.23V Consult Factory

R

TH

UG:121 Page 14

Figure 8

External pin

Use 20 – 22AWG Twisted Pair Wires

+P +OUT

S1/S2 J2-2 +SENSE

To Error
Amplifier

2.5V

REF

S1/S2 J2-1

R6

S1/S2 J2-3 –SENSE

–P –OUT

R8

R7

Example:

±10% Trim adjust on a 12V nominal output.

Figure 8 shows a typical variable trim circuit. Using a 10kΩ trimpot (R7),
the resistor values for R6 and R8 can be calculated as follows:

V1 = V

IR5 = (2.75V – V

+ 10% = 2.75V Given: V

REF

)/RTH = (2.75V – 2.5V)/10kΩ = 25mA Given: RTH = 10kΩ (see Table 2)

REF

(Remote Sense)

+

V

2

–

Use 20 – 22AWG Twisted Pair Wires

= 2.5V (see Table 2)

REF

Load

Setting the bottom limit:

VR6 = 2.5V – 10% = 2.25V

And since IR5 = IR6 = 25mA,

R6 = VR6/IR6 = 2.25V/25mA = 90kΩ

V2 = V1 + VR6 = 2.75V + 2.25V = 5V

IR7 = V2/R7 = 5V/10kΩ = 500mA

IR8 = IR7 + IR6 = 525mA

VR8 = (V

+ 10%) – V2 = 13.2V – 5V = 8.2V Given: V

NOM

NOM

= 12V

R8 = VR8/IR8 = 8.2V/525mA = 15.62kΩ

CONSULT APPLICATIONS ENGINEERING WHEN TRIMMING OUTPUTS BELOW 5V.

Single-Output Power Supplies (Arrays)

Vicor standard configuration for single-output power supplies is to set the left module (as seen from
looking at the power supply output) as the controlling module of the array.

UG:121 Page 15

Specifications

Typical at 25°C, nominal line and 75% load, unless otherwise specified.

General

Number of Outputs 1 – 6

Modules

Efficiency Typically > 75%

Safety Agency Approvals

Maximum Output Power

Input

VI-200™/VI-J00™
Line/Load Regulation

Maxi/Mini/Micro
Line Regulation

Maxi/Mini/Micro
Load Regulation

[b]

[b]

Inrush Current

Ride Through Time >20ms at 500W load (nominal load)

Conducted EMI

Power Factor >0.98

Transient Burst Immunity EN61000-4-4 (consult factory)

Surge Immunity
(Common Mode & Normal Mode)

Dielectric Withstand

MI Chassis Overvoltage
and Transients

[a]

Do Not to exceed an input current of 7.5A.

[b]

See Vicor module specifications. A preload may be necessary for modules trimmed down below 90% of normal

output voltage.

VI/E-200 and VI/E-J00: two VI/E-200s or four VI/E-J00s
Maxi: two Maxis, four Minis or six Micros

cURus – UL 60950-1, CSA 60950-1;
cTÜVus – EN 60950-1, UL 60950-1, CSA 60950-1
CE Mark – Low Voltage Directive, 2006/95/EC
Note: certain wide temp range MI chassis will not carry all approvals

500W at 115VAC, (100VAC minimum input)

[a]

800W at 230VAC, (200VAC minimum input)

Input

85 – 264VAC, 47 – 500Hz
120 – 300VDC (derated output level)

0.2% max from 10% to full load

0.5% max from no load to 10% load

0.20% max to 0.30%max

0.20% max to 0.70% max

8.5A peak @ 115V
17A peak @ 230V

AC

AC

FCC Class A
EN 55022 Class A (consult factory)
Mil-STD 461 requires external filter

Compliant with IEC 61000-4-5, Level 3, Performance Criteria B
(Temporary loss of output power may occur which is self recoverable.)

Primary to Chassis GND = 2,121V
Secondary to Chassis GND = 750V

DC

DC

Compliant to Mil-STD 704 and 1399

UG:121 Page 16

Specifications (Cont.)

Typical at 25°C, nominal line and 75% load, unless otherwise specified.

Output (VI-200™/VI-J00™ Modules)

Parameter Min Typ Max Units Notes

Set-Point Accuracy

Load/Line Regulation 0.05 0.5 %

Load/Line Regulation 0.2 0.5 %

Temperature Regulation 0.01 0.02 %/°C Over rated temperature

Long-Term Drift 0.02 %/K hours

Output Ripple & Noise:
≤10V

OUT

>10V

OUT

Voltage Trim Range:
VI-200/VI-J00 Slots 50 – 110 % V

Total Remote-Sense
Compensation

OVP Set Point

Current Limit 105 115 125 % of I

Short Circuit Current 120 (105

Overtemperature Limiting Not available on VI-J00

Parameter Min Typ Max Units Notes

Set-Point Accuracy

Load/Line Regulation ±0.08 ±0.45 (±7) % of V

Temperature Regulation 0.002 0.005 %/°C –40 to 100°C

Long-Term Drift 0.02 %/K hours

Output Ripple and Noise:
≤10V

OUT

>10V

OUT

Voltage Trim Range:
Maxi/Mini/Micro Slots 10 – 110 % V

Total Remote-Sense
Compensation

OVP Set Point 112 135 % of V

Current Limit 102 115 135 % of I

Overtemperature Limiting Not available

[a]

Do Not to exceed an input current of 7.5A.

[b]

See Vicor module specifications. A preload may be necessary for modules trimmed down below 90% of normal

output voltage.

[c]

For special and adjustable voltages, maximum set-point accuracy is 2% of V

[d]

131% nominal for booster modules. No OVP for VI-J00.

[e]

VI-J00 modules only.

[f]

For special, adjustable voltages and 48VDC outputs, maximum set-point accuracy is 2% of V

Note: See individual module data sheets for specific module specifications.

[g]

Micro modules do not support remote sense.

[c]

0.5 1 % of V

NOM

LL to HL,
10% to Full Load

LL to HL,
No Load to 10%

100

1.0

% V

mV

20MHz bandwidth

OUT

±10% on
10 – 15V

OUT

OUT

MAX

Autosense.
See pages 6 & 14

Recycle Power

Auto Recovery

0.5 Volts

[d]

115 125 135 %V

[e]

) 130 %

OUT

Maxi, Mini and Micro Series Modules

[f]

±0.5 ±1 % of V

100

1.0

mV

%V

OUT

NOM

NOM

0 – 100%

20MHz
bandwidth

Preload may be
required

OUT

0.5 Volts

.

NOM

Autosense.
See pages 6 & 14

Recycle power

OUT

Auto Recovery

MAX

NOM

[g]

.

UG:121 Page 17

Specifications (Cont.)

Typical at 25°C, nominal line and 75% load, unless otherwise specified.

Environmental

Storage Temperature –40 to +85°C

Operating Temperature
Full Power
Half Power

Altitude

Shock and Vibration Mil-STD 810 (MI rugged chassis only)

Humidity 0 – 95% non condensing

Product Weight 5.2lbs [2,4kg]

Dimensions 1.86 x 5.06 x 10.40in [47,3 x 128,5 x 264,1mm]

Warranty

[a]

[b]

[c]

[d]

[e]

[f]

[g]

[h]

[h]

Do Not to exceed an input current of 7.5A
See Vicor module specifications. A preload may be necessary for modules trimmed down below 90% of normal

output voltage.

For special and adjustable voltages, maximum setpoint accuracy is 2% of V

131% nominal for booster modules. No OVP for VI-J00.
VI-J00 modules only.

For special, adjustable voltages and 48VDC outputs, maximum set-point accuracy is 2% of V

Note: See individual module data sheets for specific module specifications.
Micro modules do not support remote sense.
Opening, repairing or modifying the unit will void the warranty. If you have any problem with the power supply,

please contact Customer Service at 1-800-735-6200. If the unit needs to be returned for inspection/analysis, an

RMA number will be issued. All units must have a RMA number prior to return.

–20 to +45°C (–40 to +45°C option w/MI chassis)
–20 to +65°C (–40 to +60°C option w/MI chassis)

Derate 2.6% total output power for each 1,000ft to a maximum operating
altitude of 15,000ft. Non-operating storage maximum altitude is 40K.

2 years limited warranty.
See vicorpower.com for complete warranty statement.

.

NOM

.

NOM

UG:121 Page 18

Figure 9

PFC Micro™ output power vs.

AC input voltage

Output Power De-Rating

PFC Micro Output Power vs. AC Input Voltage

800

750

700

650

Figure 10

PFC Micro output power vs.

DC input voltage

600

550

500

450

Output Power (Watts)

400

350

85

Power Limit Exceeded

8.33 Watts/Volt

12511510595

135

Safe Operating Area

155145

185

175165

195

245235225215205

Input Voltage (VAC)

PFC Micro Output Power vs. DC Input Voltage

800

Output Power (Watts)

720

640

560

480

400

320

240

160

80

Power Limit Exceeded

Safe Operating Area

255

265

100

120140 160180 200220 240260 280300

Input Voltage (VDC)

Power (W)

UG:121 Page 19

Figure 11

PFC Micro™ output power

temperature de-rating

PFC Micro: Output Power Temperature De-Rating

800

700

600

500

400

300

Output (Watts)

200

100

0

0

Temperature (degrees)

45 65

1. For all module configurations. The PFC Micro or an individual output may be limited by module
power limitations e.g. 5V Maxi module is 400W maximum. One cannot exceed the output power
rating of the PFC Micro regardless of the module capability.

2. Also see output power vs. input voltage charts on page 19.

3. Please note that a PFC Micro configuration that uses a Molex connector is limited to 9A/pin

(27A per output). This is a Molex connector limitation, NOT a module power limitation. Please
consult Applications Engineering for assistance on requirements that exceed the 27A limitation.

UG:121 Page 20

Current Share Boards – Optional Feature

"Current sharing" also known as load sharing, is the ability to divide the output current evenly across
all active power supplies. This greatly reduces stresses on each power supply and allows them to
run cooler, resulting in higher reliability. Standard "current sharing" techniques typically utilize shunt
resistors or Hall-Effect devices to measure the current from each power supply. Power shunt resistors
continually dissipate power and require cooling especially when dealing with high output currents of
>100A. Hall-Effect devices measure magnetic fields generated by current flowing through a conductor
and although they dissipate no power, they tend to be large and expensive.

First developed by Vicor Engineering for paralleling MegaPAC™ supplies, the box-to-box Current
Share Board or CSB allows two or more Vicor power supplies to current share by utilizing the inherent
voltage drop produced in the negative output return cable. This eliminates the need for additional shunt
resistors or expensive Hall-Effect devices and provides a simple five-wire connection method to achieve
a ±1mV accuracy between the negative output power rails. This accuracy translates to a 1% current
sharing if there is a total of 100mV conductional voltage drop in the negative return path.

Constructed as a current source to drive the trim pin of a Vicor module, the design uses an accurate
comparator circuit to monitor the power returns. In addition, the circuit is unidirectional and can only
trim an output voltage up. The benefit is that only the supply that is supporting less current is adjusted
up. This action balances the currents to the load by matching the output voltages of the supplies. In
the case of one supply failing, the circuit will attempt to trim the failed supply only. This will leave the
remaining functional supply alone to provide power to the load at its nominal voltage. Thus the circuit
also offers simple redundancy. In addition, because CSB functions as a current source, the trim outputs
(T1 and T2) of the CSB can be placed in parallel to create a summing node. This allows current sharing
between more than two supplies by paralleling the T2 output of one CSB circuit with the T1 output
of the next CSB.

Please Note: The CSB is not intended for use in hot-swap applications.

Figure 12

CSB interconnect example

+OUT

Supply # 1
5V @ 120A

Supply # 2

5V @ 120A

TRIM

–OUT

+OUT

TRIM

–OUT

+S

+S

–S

–S

Yellow

Brown

White

Black

D*

D*

T1

–V1

T2

–V2

C SB02

Power

Red

+V

–V

OUT

OUT

UG:121 Page 21

Current Share Boards – Optional Feature (Cont.)

Requirements:

1. For proper operation, the power supplies being paralleled should be enabled at the same time.

2. –OUT conductors must be of equal length and wire gauge. Separate –OUT conductors must be

used from each supply to the load, or the use of a "Y" connection to a common point must be
used as shown in Figure 12. Each leg of the "Y" must have a minimum of a few millivolts of drop in
order for proper operation. 50 – 100mV of drop will provide from 5 – 1% accuracy.

3. –V1 and –V2 for all box-to-box circuits must be connected directly at the negative output power
studs or terminals to achieve accurate current sharing.

4. D* can be added if redundancy is needed. If redundancy is not required, D* can be replaced with
direct wire connections.

5. When using D*, the power input should be connected on the cathode side of the paralleling diodes
as shown above.

6. Terminate sense leads either locally or remotely as shown in Figure 12.

7. For paralleling more than two supplies, consult factory for assistance.

UG:121 Page 22

Current Share Boards – Optional Feature (Cont.)

J1 Pinout

Pin Description

1Po wer
2T1
3 –V1
4T2
5–V2
6 No Connection

1.74"

[44.2mm]

1.500"

[38.1mm]

0.12"

[3.0mm]

0.12"

[3.0mm]

0.900"

[22.9mm]

1.14"

[29.0mm]

Figure 13. Mechanical Drawing

0.13in [3.3mm] Dia Non
Plated thru hole 4
places

12

34

56

Molex CT43045F surface mountable
connector. .390" height above board.

24.0" +/- 1.0"

P1

Figure 14.

Red, 22 AWG

Yellow, 22 AWG

Brown, 22 AWG

White, 22 AWG

Black, 22 AWG

Cable Drawing

Power

T1

–V1

T2

–V2

Specifications:

1. Power: 2 – 50VDC at 5mA maximum.

2. Accuracy: ±1mV between –VOUT connections.

3. Output current when not trimming up: ±1µA (VI-200/J00), ±5µA (Maxi).

4. Use four non-plated through holes with standoffs for mounting.

5. CSB01 MUST be used for current sharing VI-200™/VI-J00™ converters.

6. CSB02 MUST be used for current sharing Maxi/Mini/Micro converters.

PLEASE NOTE: THE CSB IS NOT INTENDED FOR HOT-SWAP APPLICATIONS.

Contact your Regional Applications Engineer at 1-800-927-9474 for additional information.

UG:121 Page 23

For more information about this or other Vicor products, or for assistance with component-based
power system design, contact the Vicor office nearest you. Vicor comprehensive line of power
solutions includes modular, high-density DC-DC converters and accessory components, configurable
power supplies, and custom power systems. Vicor designs and builds configurable power supplies
incorporating Vicor high-density DC-DC converters and accessory components.

This product line includes:

LoPAC™ FAMILY:

 PFC MicroS™
 PFC Micro™
 PFC Mini™

MegaPAC™ FAMILY:

 PFC MegaPAC™
 4kW MegaPAC™
 PFC MegaPAC™ (High Power)
 PFC MegaPAC-EL™
 Mini MegaPAC™
 ConverterPACs™

Others:

 FlatPAC-EN™

Rugged COTS versions (MI) are available for the PFC Micro, PFC MicroS, PFC Mini, PFC MegaPAC.

UG:121 Page 24

Limitation of Warranties

Information in this document is believed to be accurate and reliable. HOWEVER, THIS INFORMATION
IS PROVIDED “AS IS” AND WITHOUT ANY WARRANTIES, EXPRESSED OR IMPLIED, AS TO THE
ACCURACY OR COMPLETENESS OF SUCH INFORMATION. VICOR SHALL HAVE NO LIABILITY FOR THE
CONSEQUENCES OF USE OF SUCH INFORMATION. IN NO EVENT SHALL VICOR BE LIABLE FOR ANY
INDIRECT, INCIDENTAL, PUNITIVE, SPECIAL OR CONSEQUENTIAL DAMAGES (INCLUDING, WITHOUT
LIMITATION, LOST PROFITS OR SAVINGS, BUSINESS INTERRUPTION, COSTS RELATED TO THE REMOVAL
OR REPLACEMENT OF ANY PRODUCTS OR REWORK CHARGES).

Vicor reserves the right to make changes to information published in this document, at any time
and without notice. You should verify that this document and information is current. This document
supersedes and replaces all prior versions of this publication.

All guidance and content herein are for illustrative purposes only. Vicor makes no representation or
warranty that the products and/or services described herein will be suitable for the specified use without
further testing or modification. You are responsible for the design and operation of your applications
and products using Vicor products, and Vicor accepts no liability for any assistance with applications or
customer product design. It is your sole responsibility to determine whether the Vicor product is suitable
and fit for your applications and products, and to implement adequate design, testing and operating
safeguards for your planned application(s) and use(s).

VICOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED FOR USE IN LIFE SUPPORT,
LIFE-CRITICAL OR SAFETY-CRITICAL SYSTEMS OR EQUIPMENT. VICOR PRODUCTS ARE NOT CERTIFIED
TO MEET ISO 13485 FOR USE IN MEDICAL EQUIPMENT NOR ISO/TS16949 FOR USE IN AUTOMOTIVE
APPLICATIONS OR OTHER SIMILAR MEDICAL AND AUTOMOTIVE STANDARDS. VICOR DISCLAIMS
ANY AND ALL LIABILITY FOR INCLUSION AND/OR USE OF VICOR PRODUCTS IN SUCH EQUIPMENT OR
APPLICATIONS AND THEREFORE SUCH INCLUSION AND/OR USE IS AT YOUR OWN RISK.

Terms of Sale

The purchase and sale of Vicor products is subject to the Vicor Corporation Terms and Conditions of
Sale which are available at: (http://www.vicorpower.com/termsconditionswarranty)

Export Control

This document as well as the item(s) described herein may be subject to export control regulations.
Export may require a prior authorization from U.S. export authorities.

Contact Us: http://www.vicorpower.com/contact-us

Vicor Corporation

25 Frontage Road

Andover, MA, USA 01810

Tel: [phone]
Fax: [phone]

www.vicorpower.com

email

Customer Service: [e-mail]

Technical Support: [e-mail]

©2019 Vicor Corporation. All rights reserved. The Vicor name is a registered trademark of Vicor Corporation.

All other trademarks, product names, logos and brands are property of their respective owners.

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