Patent ID: 11476752

Abstract:
The present disclosure provides a power supply apparatus, which provides an output voltage outputted by a DC/DC power circuit to a power supply system of a load and includes: an external terminal which a load-side ground potential is applied to; an adding portion configured for adding the load-side ground potential applied to the external terminal to a set reference voltage; a low-pass filter (LPF) including at least one resistor and at least one capacitor, wherein the LPF inputs an LPF input voltage based on an adding result of the adding portion; and an error amplifier, wherein the error amplifier is inputted an LPF output voltage from the LPF as a reference voltage and inputted a feedback voltage based on the LPF output voltage. The error amplifier is included in the DC/DC power circuit. The output voltage is controlled according to an output of the error amplifier.