Cool-Power®
ZVS Switching Regulators
PI3751-02
38 – 60VIN, 240W Cool-Power ZVS Buck-Boost Regulator
Product Description
Features & Benefits
The PI3751-02 is a high efficiency, wide input range DC-DC
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 PI3751-02, increases point of load
performance providing best in class power efficiency.
• Over 97.5% efficiency at 2.5MHz FSW
• Wide input voltage range of 38 – 60V
• Wide output voltage range of 38 – 50V
• Up to 240W continuous output power / 512.5W peak
• Power density exceeding 1,389W/in3
• Fast transient response in VRM 13 applications
• Light load mode < 200mW no load power dissipation
• VTM™ compatibility mode
The PI3751-02 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 PI3751-02
sustains high switchingfrequency up to the rated input voltage
withoutsacrificing efficiency and supports large conversion ratios.
• High side current sense amplifier
• User-configurable differential amplifier
• Input / Output Over / Undervoltage Protection
• Temperature lockout protection
• Fast and slow current limits
• –40 to 125°C operating range (TJ)
Applications
• Factorized Power Solution
(when coupled with a VTM device)
• Computing, Communications, Processor, DDR Memory
• 48V to PoL Power Solutions
Package Information
• 10 x 14 x 2.56mm Land Grid Array Module
Typical Application
5V
5V
LEXT
+
–
VDR
VCC
VOUT
VIN 38 – 60V
VTM 3
Processor
PI3751
5V
10kΩ
ENABLE TM
10kΩ
EAO VDIFF
ENABLE FLT
ENABLE
VID
Controller
ISENSE
EA
SYSTEM ENABLE
Applications Diagram for use within a Factorized Power, VR13.0 Design
Cool-Power® ZVS Switching Regulators
Rev 1.3
Page 1 of 3
01/2018