PI3311-00-LGIZ Datasheet, PDF (5/42 Pages) Vicor Corporation – 8 V to 36 Vin Cool-Power ZVS Buck Regulator Family

PI33xx-x0
Pin Description
Pin Name
SGND
PGND
V_IN
V_OUT
VS1
PGD
EAO
EN
REM
ADJ
TRK
NC
SYNCO
SYNCI
SDA
SCL
ADR1
ADR0
Number
Block 1
Block 2
Block 3
Block 5
Block 4
A1
A2
A3
A5
B1
C1
K3, A4
K4
K5
D1
E1
H1
G1
Description
Signal Ground: Internal logic ground for EA, TRK, SYNCI, SYNCO, ADJ and I²C (options) communication
returns. SGND and PGND are star connected within the regulator package.
Power Ground: V_IN and V_OUT power returns.
Input Voltage: and sense for UVLO, OVLO and feed forward ramp.
Output Voltage: and sense for power switches and feed-forward ramp.
Switching Node: and ZVS sense for power switches.
Parallel Good: Used for parallel timing management intended for lead regulator.
Error Amp Output: External connection for additional compensation and current sharing.
Enable Input: Regulator enable control. Asserted high or left floating – regulator enabled;
Asserted low, regulator output disabled. Polarity is programmable via I²C interface.
Remote Sense: High side connection. Connect to output regulation point.
Adjust Input: An external resistor may be connected between ADJ pin and SGND or V_OUT
to trim the output voltage up or down.
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.
No Connect: Leave pins floating.
Synchronization Output: Outputs a low signal for ½ of the minimum period for synchronization of other
converters.
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.
Data Line: Connect to SGND for PI33xx-00. For use with PI33xx-20 only.
Clock Line: Connect to SGND for PI33xx-00. For use with PI33xx-20 only.
Tri-state Address: No connect for PI33xx-00. For use with PI33xx-20 only.
Tri-state Address: No connect for PI33xx-00. For use with PI33xx-20 only.
Package Pin-Out
PGND
Block 2
1 2 3 4 5 6 7 8 9 10 11 12 13 14
SGND ^K
Block 1
J
ADR1 H
VIN
Block 3
ADR0 G
SGND F
SCL E
SDA D
TRK C
ADJ B
VS1
Block 4
PGD A
VOUT
Block 5
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
Cool-Power®
Page 5 of 42
Rev 2.0
02/2016
vicorpower.com
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