Vicor Corp.

Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715

28V Micro Family

Rev. 1.2

Page 9 of 11

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R1

R2

U1

R3

2.55 k

R4

R5

1.00 k

U2

TLV431

C1

R7 21.0 k

C2

0.22 µF

R8

4.02 k

C3

R9

R10

1.24 k

U3

LM10

+S

–S

+Out

SC

–Out

R Load

PS2701

R11

36.5 k

R6

1.65 k 470 pF

200 mV

Vcc

Gnd

See Component Selection section below.

+OUT

SC

–OUT

L

O

A

D

Plane

Ground

Plane

Module #1

Designated

Master

Module #2

trimmed

down 2 %

Module #3

trimmed

down 4 %

+OUT

SC

–OUT

+OUT

SC

–OUT

• The +Out and –Out

power buses should be

designed to minimize

and balance parasitic

impedance from each

module output to the

load.

• At the discretion of the

power system designer,

a subset of all modules

within an array may be

configured as slaves by

shorting SC to –Out.

• Do not use output

OR’ing diodes with

MicroMods.

• This module is designed for point of load regulation, where remote sensing

is not required. Active voltage drop compensator, as shown here, may be

used in applications with significant distribution losses.

Please consult with the Micro Family Isolated Remote Sense Application Note

for additional information.

Figure 12 — Voltage drop compensation.

Figure 11 — N+1 module array output connections.

Designator

Description

Notes

(None)

Short Tin / Lead

Requires inboard, mounting

L

Long Tin / Lead

Onboard mounting for 0.065" boards

S

Short ModuMate

SurfMate or inboard socket mounting

N

Long ModuMate

Onboard socket mounting

F

Short RoHS

Select for RoHS compliant inboard solder, socket, or SurfMate mounting

G

Long RoHS

Select for RoHS compliant onboard solder or socket mounting

* Pin style designator follows the “B” after the output power and precedes the baseplate designator.

Ex. V28C12T100BN2 — Long ModuMate Pins

CONTROL FUNCTIONS - PR PIN (CONT.)

PIN STYLES*