PMP21795 Reference Design

Texas Instruments

Automotive EMI and thermally optimized synchronous buck converter reference design

Description

This reference design is an EMI and thermally optimized synchronous buck converter for automotive applications. The circuit is powered from the nominal 12-V battery to provide an output voltage of 3.3 V at 8 A. The design uses a synchronous buck controller operating at a switching frequency of 440 kHz. Forced pulse width modulation or diode emulation mode is jumper selectable. Frequency dithering is used to improve the EMI performance.

Features
  • EMI and thermally optimized for improved system performance440 kHz switching frequency: which is below the AM bandJumper selectable diode emulation or forced PWMSelectable frequency dithering improves EMI performanceCompact power stage and controller layout for small solution size
Applications
  • Gesturing
Product Categories
  • Power management

End Equipment Reference Diagrams