PMP21943 Reference Design

Texas Instruments

48-V / 25-A negative-to-positive synchronous buck-boost reference design for power amplifiers


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 +48 V at 25 A. The design uses two dual synchronous boost controllers for 4-phase operation at a switching frequency of 150 kHz. Output voltage adjustment to +30 V is jumper selectable. 1- through 4-phase operation is also jumper selectable.

  • Non-isolated inverting solution for higher powerExcellent phase current sharing for balanced thermal performanceJumper selectable phase controlCompact design for minimum solution sizeJumper selectable output voltage control
  • Active antenna system mMIMO (AAS)
Product Categories
  • Power management