Synchronous Inverting Buck Boost Converter, 12V Input to -3.3V at 9A using the TPS40055 (PMP2768)
PMP2768 uses the TPS40055 synchronous buck controller in an inverting buck boost configuration. This topology takes a positive input and generate a negative output. In this case 12V is converted to -3.3V at 9A. The design operates at 200KHz and uses a synchronous controller to get high output current.