This reference design uses the LM25118-Q1. The input voltage is between 9 V and 16 V (withstanding pulse to 32 V). The output voltage is variable from 2 V to 18 V by means of a DAC control input. If the DAC control input is left open, the output voltage is about 13.26 V. With shorted DAC control input, the output voltage is around 18 V.
Features
- Output voltage can vary between 2 V and 18 V to support wireless charging
- 2-SW buck-boost topology saves two MOSFETs and drivers versus 4-SW buck boost.
- Minimal efficiency difference versus 4-SW buck-boost because of <3-A load current
- Suitable for automotive applications and can survive load dump to 32 V