Cool-Power
®
PI33XX-X0
8V to 36Vin Cool-Power ZVS Buck Regulator Family
Description
The PI33XX is a family of high efficiency, wide input
range DC-DC ZVS-Buck regulators integrating
controller, power switches, and support components
all within a high density System-in-Package (SiP). The
integration of a high performance Zero-Voltage
Switching (ZVS) topology, within the PI33XX series,
increases point of load performance providing best in
class power efficiency. The PI33XX requires only an
external inductor and minimal capacitors to form a
complete DC-DC switching mode buck regulator.
Device
PI3311-X0-LGIZ
PI3318-X0-LGIZ
PI3312-X0-LGIZ
PI3301-X0-LGIZ
PI3302-X0-LGIZ
PI3303-X0-LGIZ
PI3305-X0-LGIZ
Output Voltage
Set
1.0V
1.8V
2.5V
3.3V
5.0V
12V
15V
Range
1.0 to 1.4V
1.4 to 2.0V
2.0 to 3.1V
2.3 to 4.1V
3.3 to 6.5V
6.5 to 13.0V
10.0 to 16.0V
Iout Max
10A
10A
10A
10A
10A
8A
8A
Features
High Efficiency ZVS-Buck Topology
Wide input voltage range of 8V to 36V
Very-Fast transient response
High accuracy pre-trimmed output voltage
User adjustable soft-start & tracking
Power-up into pre-biased load (select versions)
Parallel capable with single wire current sharing
Input Over/Under Voltage Lockout (OVLO/UVLO)
Output Overvoltage Protection (OVP)
Over Temperature Protection (OTP)
Fast and slow current limits
-40°C to 125°C operating range (T
J
)
2
Optional I C functionality & programmability:
Vout margining
Fault reporting
Enable and SYNCI pin polarity
Phase delay (interleaving multiple regulators)
Applications
High efficiency systems
Computing, Communications, Industrial,
Automotive Equipment
High voltage battery operation
Table 1
- PI33XX-X0 Portfolio.
The ZVS architecture also enables high frequency
operation while minimizing switching losses and
maximizing efficiency. The high switching frequency
operation reduces the size of the external filtering
components, improves power density, and enables
very fast dynamic response to line and load
transients. The PI33XX series sustains high switching
frequency all the way up to the rated input voltage
without sacrificing efficiency and, with its 20ns
minimum on-time, supports large step down
conversions up to 36Vin.
Package Information
10mm x 14mm x 2.6mm LGA SiP
I
2
C is a trademark of NXP Semiconductors
vicorpower.com
800 735.6200
Rev 1.4
11/2012
Cool-Power
Page 1 of 42
®
PI33XX-X0
Contents
Order Information ...................................................... 3
Pin Description............................................................ 4
Package Pin-Out.......................................................... 4
Absolute Maximum Ratings ........................................ 5
PI3311-X0 (1.0 Vout) Electrical Characteristics........... 6
PI3318-X0 (1.8 Vout) Electrical Characteristics........... 9
PI3312-X0 (2.5 Vout) Electrical Characteristics......... 12
PI3301-X0 (3.3 Vout) Electrical Characteristics......... 16
PI3302-X0 (5.0 Vout) Electrical Characteristics......... 20
PI3303-X0 (12.0 Vout) Electrical Characteristics ...... 24
PI3305-X0 (15.0 Vout) Electrical Characteristics ...... 28
Functional Description .............................................. 32
ENABLE (EN) .........................................................32
Switching Frequency Synchronization..................32
Output Voltage Trim.............................................32
Soft-Start ..............................................................32
Remote Sensing ....................................................33
Output Current Limit Protection ..........................33
Input Under-Voltage Lockout ...............................33
Input Over Voltage Lockout .................................33
Output Over Voltage Protection ..........................33
Over Temperature Protection ..............................33
Pulse Skip Mode (PSM) ........................................33
Variable Frequency Operation .............................34
Parallel Operation ................................................34
I C Interface Operation ....................................... 34
2
Application Description .............................................35
Output Voltage Trim ............................................ 35
Soft-Start Adjust and Tracking ............................. 36
Inductor Pairing ................................................... 36
Thermal Derating ................................................. 36
Filter Considerations ............................................ 38
Layout Guidelines ......................................................39
Recommended PCB Footprint and Stencil ................40
Package Drawings .....................................................41
Warranty ...................................................................42
vicorpower.com
800 735.6200
Rev 1.4
11/2012
Cool-Power
Page 2 of 42
®
PI33XX-X0
Order Information
Output Range
Cool-Power
Set
PI3311-00-LGIZ
PI3318-00-LGIZ
PI3312-00-LGIZ
PI3301-00-LGIZ
PI3302-00-LGIZ
PI3303-00-LGIZ
PI3305-00-LGIZ
1.0V
1.8V
2.5V
3.3V
5.0V
12V
15V
Range
1.0 to 1.4V
1.4 to 2.0V
2.0V to 3.1V
2.3 to 4.1V
3.3 to 6.5V
6.5 to 13.0V
10.0 to 16.0V
Iout
Max
10A
10A
10A
10A
10A
8A
8A
Package
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
Transport Media
TRAY
TRAY
TRAY
TRAY
TRAY
TRAY
TRAY
Higher Current Versions
(Refer to PI33XX-X1-LGIZ Datasheet)
PI3311-01-LGIZ
PI3318-01-LGIZ
PI3312-01-LGIZ
PI3301-01-LGIZ
1.0V
1.8V
2.5V
3.3V
1.0 to 1.4V
1.4 to 2.0V
2.0 to 3.1V
2.3 to 4.1V
15A
15A
15A
15A
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
TRAY
TRAY
TRAY
TRAY
I
2
C Functionality & Programmability
PI3311-20-LGIZ
PI3318-20-LGIZ
PI3312-20-LGIZ
PI3301-20-LGIZ
PI3302-20-LGIZ
PI3303-20-LGIZ
PI3305-20-LGIZ
PI3311-21-LGIZ
PI3318-21-LGIZ
PI3312-21-LGIZ
PI3301-21-LGIZ
1.0V
1.8V
2.5V
3.3V
5.0V
12V
15V
1.0V
1.8V
2.5V
3.3V
1.0 to 1.4V
1.0 to 1.4V
2.0 to 3.1V
2.3 to 4.1V
3.30 to 6.5V
6.5 to 13.0V
10.0 to 16.0V
1.0 to 1.4V
1.4 to 2.0V
2.0 to 3.1V
2.3 to 4.1V
10A
10A
10A
10A
10A
8A
8A
15A
15A
15A
15A
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
10mm x 14mm 123-pin LGA
TRAY
TRAY
TRAY
TRAY
TRAY
TRAY
TRAY
TRAY
TRAY
TRAY
TRAY
vicorpower.com
800 735.6200
Rev 1.4
11/2012
Cool-Power
Page 3 of 42
®
PI33XX-X0
Pin Description
Name
SGND
PGND
VIN
VOUT
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 I C (options)
communication returns. SGND and PGND are star connected within the regulator package.
Power ground:
VIN and VOUT 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;
2
Asserted low, regulator output disabled. Polarity is programmable via I C 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 VOUT 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-10 and -11. For use with PI33XX-20 and -21 only.
Clock Line:
Connect to SGND for PI33XX-10 and -11. For use with PI33XX-20 and -21 only.
Tri-state Address
: No connect for PI33XX-10 and -11. For use with PI33XX-20 and -21 only.
Tri-state Address
: No connect for PI33XX-10 and -11. For use with PI33XX-20 and -21 only.
2
Package Pin-Out
SYNCO
SYNCI
1
SGND
Block 1
K
J
ADR1 H
ADR0 G
SGND F
SCL E
SDA D
TRK C
ADJ B
PGD A
VS1
Block 4
VIN
Block 3
2
3
4
5
6
7
PGND
Block 2
8
9
NC
10
11
12
13
14
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
123-Lead LGA (10mm x 14mm)
Top view
EAO
EN
NC
REM
VOUT
Block 5
vicorpower.com
800 735.6200
Rev 1.4
11/2012
Cool-Power
Page 4 of 42
®
PI33XX-X0
Absolute Maximum Ratings
Notes: At 25°C ambient temperature. All voltage nodes are referenced to PGND.
VIN
VS1
VOUT
SGND
PGD, SYNCO, SYNCI, EN, EAO, ADJ, TRK, ADR1, ADR2, SCL, SDA, REM
Storage Temperature
Operating Junction Temperature
Soldering Temperature for 20 seconds
ESD Rating
-0.7V to 36V
-0.7 to 36V, -4V for 5ns
See relevant product section
100mA
-0.3V to 5.5V / 5mA
-65°C to 150°C
-40°C to 125°C
260°C
2kV HBM
VIN
Q1
Q2
R4
VS1
VOUT
Vout
REM
Power
Control
SYNCO
SYNCI
PGD
EN
R1
VCC
EAO
ADJ
1V R2
ZVS Control
-
+
Memory
Interface
TRK
PGND
0Ω
Figure 1:
Simplified Block Diagram
(I C pins SCL, SDA, ADR0, and ADR1 only active for PI33XX-20 and PI33XX-21 versions)
2
vicorpower.com
800 735.6200
SGND
ADR0
ADR1
SDA
SCL
Rev 1.4
11/2012
Cool-Power
Page 5 of 42
®
Analog electronics
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