Device and method for compliance testing of power supply adapters of information handling systems

A system comprising:

• a processor;
• a data bus coupled to the processor;
• and
• a non-transitory, computer-readable storage medium embodying computer program code, the non-transitory, computer-readable storage medium being coupled to the data bus, the computer program code interacting with a plurality of computer operations for compliance testing of a power supply adapter (PSA) to a powered device (PD) comprising and comprising instructions executable by the processor and configured for:
• measuring a voltage at synchronous rectifier (SR) gate of the PSA, where the SR gate receives current from a main converter of the PSA;
• measuring a sense current at a sense resistor wherein the sense current follows from the SR gate;
• calculating a sense voltage based on the measured sense current and value of sense resistor;
• if sense voltage is zero, bypassing received current of the PSA at a first blocking MOSFET, and using a second blocking MOSFET for over voltage protection and passing the received current to an output of the PSA;
• and
• if the sense voltage is not zero, passing the received current through the first blocking MOSFET.

A power supply adapter (PSA) configured to supply power to a powered device (PD) comprising:

• a synchronous rectifier (SR) gate of the PSA, where the SR gate receives current from a main converter of the PSA, wherein voltage of the SR gate is measured;
• a sense resistor receiving sense current at a sense resistor which follows from the SR gate, wherein a sense voltage is calculated based measure sense current and value of the sense resistor;
• a first blocking MOSFET, wherein if sense voltage is zero, by passing received current of the PSA at the first blocking MOSFET;
• and
• a second blocking MOSFET for over voltage protection when the first blocking MOSFET is bypassed, and if the sense voltage is not zero, passing the received current through the first blocking MOSFET.