Cool-Power®
PI3751-00
38V to 60Vin, 200W Cool-Power ZVS Buck-Boost
Preliminary Datasheet
Description
Features
The PI3751 is a high efficiency, wide input range DCDC ZVS-Buck-Boost regulator. This high density
module integrates controller, power switches, and
support components. The integration of a high
performance Zero-Voltage Switching (ZVS) topology,
within the PI3751, increases point of load
performance providing best in class power efficiency.
The PI3751 version requires an externally applied 5V
bias to the VDR input, an external inductor, resistive
divider and minimal capacitors to form a complete
DC-DC switching mode buck-boost regulator.
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 PI3751 sustains high switching
frequency up to the rated input voltage without
sacrificing efficiency and supports large conversion
ratios.
Up to 98% efficiency at 2.5MHz FSW
Wide input voltage range of 38V to 60V
Wide output voltage range of 38V to 50V
Up to 200W continuous output power
Up to 368W peak output power
Fast transient response
Parallel capable with single wire current sharing
External frequency synchronization / interleaving
High Side Current Sense Amplifier
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 (TJ)
Applications
VR12.X Factorized Power Solution (when coupled
with a VTM device)
Computing, Communications
High voltage battery operation
Package Description
10mm x 14mm x 2.56mm Land Grid Array
Module
ISN
ISP
38V-60V
ZVS BB
5V
VTM3
FLT
TM
IOUT
EA
5V
VOUT
SVID
EN
Figure 1: Applications Diagram for use within a Factorized Power, VR12.5 Design
®
vicorpower.com
Rev C
Cool-Power
800.735.6200
4/2014
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