FAN6390: PD3.0 Adaptive Charging Controller with Synchronous Rectifier Control

FAN6390 is a highly integrated, secondary-side power adaptor controllers. It implements state machines for Power Delivery 3.0 and Type-C™. This PD3.0 state machine is designed for Source only and it supports PPS as well. In order to meet PPS specification, FAN6390 supports minimum 3.3 V output voltage control and maximum 21V output voltage control. FAN6390 internally adopts synchronous rectifier control for less BOM counts as well as easy design. It includes Constant Voltage (CV) and Constant Current (CC) control blocks, and they consist of two operational amplifiers for voltage-loop and current-loop regulation with adjustable references. The references are supported from the DAC. The outputs of the CV and CC amplifiers are tied together in open-drain configuration. FAN6390 supports various protections, Under Voltage Protection, Over Voltage Protection, Over Current Protection, BUS line impedance Protection, IC internal Over Temperature Protection and External Over Temperature Protection. Through 10-bit ADC, output voltage, output current, and external temperature via NTC can be monitored. FAN6390 is capable of controlling back to back N-Channel MOSFETs as a Load switch, which results in a low cost and easier design.