Rev 1.3

vicorpower.com

Page 5 of 30

12/2015

800 927.9474

PI34xx-00

PGD

VS1

Block 4

VIN

Block 3

PGND

Block 2

SGND

ADJ

TRK

SDA

SCL

ADR0

ADR1

K

J

H

G

F

E

D

C

B

A

13

12

5

4

3

1

14

210

9

8

7

611

SGND

Block 1

VOUT

Block 5

Package Pin-Out

Pin Description

Block 1:

B2-4, C2-4, D2-3, E2-3, F1-3, G2-3, H2-3, J1-3, K1-2

Block 2:

A8-10, B8-10, C8-10, D8-10, E4-10, F4-10, G4-10, H4-10, J4-10, K6-10

Block 3:

G12-14, H12-14, J12-14, K12-14

Block 4:

A12-14, B12-14, C12-14, D12-14, E12-14,

Block 5:

A6-7, B6-7, C6-7, D6-7

Name

Location

Description

SGND

Block 1

Signal ground: Internal logic ground for EA, TRK, SYNCI, SYNCO and ADJ. SGND and PGND are star connected

within the regulator package.

PGND

Block 2

VIN

Block 3

Input voltage: and sense for UVLO, OVLO and feed forward ramp.

VOUT

Block 5

Output voltage: and sense for power switches and feed-forward ramp.

VS1

Block 4

Switching node: and ZVS sense for power switches.

PGD

A1

Parallel Good: Used for parallel timing management intended for lead regulator.

EAO

A2

Error amp output: External connection for additional compensation and current sharing.

EN

A3

Enable Input: Regulator enable control. Asserted high or left floating – regulator enabled; Asserted low,

regulator output disabled.

REM

A5

Remote Sense: High side connection. Connect to output regulation point.

ADJ

B1

voltage up or down.

TRK

C1

Soft-start and track input: An external capacitor may be connected between TRK pin and SGND to decrease

the rate of rise during soft-start.

NC

K3, A4

No Connect: Leave pins floating.

SYNCO

K4

Synchronization output: Outputs a high signal for ½ of the minimum period for synchronization of other

regulators.

SYNCI

K5

Synchronization input: Synchronize to the falling edge of external clock frequency. SYNCI is a high

impedance digital input node and should always be connected to SGND when not in use.

SDA

D1

Data Line: Connect to SGND. Factory use only. Not for use in application.

SCL

E1

Clock Line: Connect to SGND. Factory use only. Not for use in application.

ADR1

H1

Tri-state Address: No connect. Factory use only. Not for use in application.

ADR0

G1

Tri-state Address: No connect. Factory use only. Not for use in application.