PMP21867 Reference Design

Texas Instruments

12-V / 100-A negative-to-positive synchronous buck-boost reference design for power amplifiers

Description

This reference design is a negative-to-positive synchronous buck-boost converter for power amplifier applications. The circuit is powered from the nominal -48-V system source to provide an output voltage of +12 V at 100 A. The design uses two dual synchronous boost controllers for 4-phase operation at a switching frequency of 100 kHz. Output voltage adjustment to +14.5 V is jumper selectable. 1- through 4-phase operation is also jumper selectable.

Features
  • Non-isolated inverting solution for higher powerExcellent phase current sharing for balanced thermal performanceJumper selectable phase controlMounting option for bottom-side heat sinkJumper selectable output voltage control
Applications
  • Active antenna system mMIMO (AAS)
Product Categories
  • Power management