12-V / 100-A negative-to-positive synchronous buck-boost reference design for power amplifiers
PMP21867
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Key Document
- 12-V / 100-A Negative-to-Positive Synchronous Buck-Boost Reference Design
(PDF 2875 KB)
10 Sep 2019
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 power
- Excellent phase current sharing for balanced thermal performance
- Jumper selectable phase control
- Mounting option for bottom-side heat sink
- Jumper selectable output voltage control
See the Important Notice and Disclaimer covering reference designs and other TI resources.