Abstract: The present disclosure provides a system and method for soft start scheme to control inrush current for VCONN in USB-C interface. The system includes: a serial shift register having flip-flops and adapted to obtain clock with programmable clock divider, frequency of clock changes dynamically by programming programmable clock divider; a resistor DAC unit configured to increment voltage in step-wise manner; a pass gate switch comprising NMOS gate switch and a PMOS gate switch connected in parallel and operatively coupled to the resistor DAC unit and configured to control an input voltage to a VCONN charge pump, said input voltage being in incremental steps such that the VCONN charge pump pumps an output voltage; and a VCONN switch gate operatively coupled to the VCONN charge pump and configured to supply the output voltage in controlled, incremental steps, such that the output voltage is ramped slowly to control the inrush current.

Abstract: Systems and methods for providing VCONN to configuration channel line in USB-interface, involving a sense switch and a VCONN switch coupled with the VCONN supply and a gate control unit; an over current protection (OCP) reference current unit configured to provide a predetermined current through the sense branch; a preamplifier configured to amplify a differential voltage between source terminal voltages of the sense switch and the VCONN switch; an Over Current detection comparator configured to generate an Over Current fault signal when the source terminal voltage at the VCONN switch is lower than the source terminal voltage at the sense switch; and a control unit configured to: activate, upon receipt of the generated Over Current fault signal, the gate control unit, wherein the gate control unit, upon activation, is configured to disable the sense switch and the VCONN switch respectively to protect the VCONN and CC_P from over current.

Abstract: The present disclosure provides a system and method for soft start scheme to control inrush current for VCONN in USB-C interface. The system includes: a serial shift register having flip-flops and adapted to obtain clock with programmable clock divider, frequency of clock changes dynamically by programming programmable clock divider; a resistor DAC unit configured to increment voltage in step-wise manner; a pass gate switch comprising NMOS gate switch and a PMOS gate switch connected in parallel and operatively coupled to the resistor DAC unit and configured to control an input voltage to a VCONN charge pump, said input voltage being in incremental steps such that the VCONN charge pump pumps an output voltage; and a VCONN switch gate operatively coupled to the VCONN charge pump and configured to supply the output voltage in controlled, incremental steps, such that the output voltage is ramped slowly to control the inrush current.

Abstract: Systems and methods for providing VCONN to configuration channel line in USB-interface, involving a sense switch and a VCONN switch coupled with the VCONN supply and a gate control unit; an over current protection (OCP) reference current unit configured to provide a predetermined current through the sense branch; a preamplifier configured to amplify a differential voltage between source terminal voltages of the sense switch and the VCONN switch; an Over Current detection comparator configured to generate an Over Current fault signal when the source terminal voltage at the VCONN switch is lower than the source terminal voltage at the sense switch; and a control unit configured to: activate, upon receipt of the generated Over Current fault signal, the gate control unit, wherein the gate control unit, upon activation, is configured to disable the sense switch and the VCONN switch respectively to protect the VCONN and CC_P from over current.