12-V / 100-A negative-to-positive synchronous buck-boost reference design for power amplifiers
PMP21867
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
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.
