ZVS Buck-Boost Switching Regulators

ZVS Buck-Boost


The PI37xx is a series of high efficiency, wide input range DC-DC ZVS-Buck-Boost 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 PI37xx increases point of load performance providing best in class power efficiency. The PI37xx requires only an external inductor and minimal capacitors to form a complete DC-DC switching mode buck-boost regulator.

The ZVS architecture 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 PI37xx regulator sustains high switching frequency up to the rated input voltage without sacrificing efficiency and supports large conversion ratios.

Input Voltages   16 – 34 V
21 – 60 V
Output Voltages  

12 – 34 V
21 – 36 V
36 – 54 V

Output Power  

Up to 240 W continuous

Over 98% efficiency
at >800 kHz FSW

10 x 14 x 2.5 mm





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Use the matrix below to select a module to meet your needs. You can click on the filter icons at the top of each column to filter results. Click on the column heading to sort the column. Once you have made your selection click on the part number to go to a product page and choose your mechanical options, and get part number specific information.


General Purpose Buck-Boost Matrix


Part Number
Filter Column
Input Range (V)
Filter Column
Filter Column
Output Range (V)
Filter Column
Power (W)
Filter Column
Package (mm)
PI3741-00-LGIZ » 21 – 60 General Purpose 24 (21 – 36) 140 10 x 14 x 2.5 (LGA SiP)
PI3741-01-LGIZ » 21 – 60 General Purpose 48 (36 – 54) 150 10 x 14 x 2.5 (LGA SiP)
PI3749-00-LGIZ » 16 – 34 General Purpose 12 – 34 240 10 x 14 x 2.5 (LGA SiP)
1     3 products
Features & Benefits
  • General purpose Buck-Boost regulators
  • Over 98% efficiency at >800 kHz FSW
  • Fast transient response
  • Parallel capable with single wire current sharing
  • External frequency synchronization/interleaving
  • General purpose 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)
  • High density 10 x 14 x 2.5 mm SiP packaging




Packaging Options

10 mm x 14 mm x 2.6 mm LGA SiP


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Accessories for this product family can be found on the individual product pages.