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PI3318-20-LGIZ Datasheet(PDF) 5 Page - Vicor Corporation

Part # PI3318-20-LGIZ
Description  8V to 36VIN Cool-Power ZVS Buck Regulator Family
Download  42 Pages
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Manufacturer  VICOR [Vicor Corporation]
Direct Link  http://www.vicorpower.com
Logo VICOR - Vicor Corporation

PI3318-20-LGIZ Datasheet(HTML) 5 Page - Vicor Corporation

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PI33xx-x0
Cool-Power® ZVS Switching Regulators
Rev 2.2
vicorpower.com
Page 5 of 42
08/2016
800 927.9474
Package Pin-Out
Pin Description
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
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
Pin Name
Number
Description
SGND
Block 1
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.
PGND
Block 2
Power Ground:
VIN and VOUT power returns.
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. Polarity is programmable via I2C interface.
REM
A5
Remote Sense:
High side connection. Connect to output regulation point.
ADJ
B1
Adjust Input:
An external resistor may be connected between ADJ pin and SGND or VOUT
to trim the output 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 low signal for ½ of the minimum period for synchronization of other
converters.
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 for PI33xx-00. For use with PI33xx-20 only.
SCL
E1
Clock Line:
Connect to SGND for PI33xx-00. For use with PI33xx-20 only.
ADR1
H1
Tri-state Address:
No connect for PI33xx-00. For use with PI33xx-20 only.
ADR0
G1
Tri-state Address:
No connect for PI33xx-00. For use with PI33xx-20 only.


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