Buck-boost (-12V @ 0.5A) for the TPS5430
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PMP2224 uses the TPS5430 in an inverting buck boost configuration to generate a negative output from a positive input. This type of circuit is useful in a number of applications including Audio, Communications, Military/Space etc. This design uses a nominal 12V input to generate an output of -12V@0.5A. The circiut has an integrated FET to keep the board space and complexity down.