Patent ID: 8988899
Filing Date: 2015-03-24
Classification: H02M

Abstract:
1. A switching regulator device, comprising: a power conversion transformer that is supplied with an input voltage from a power source at a primary side, converts the input voltage to a predetermined output voltage and outputs the predetermined output voltage to a load circuit connected to a secondary side; a power converter circuit that has a primary-side circuit and a secondary-side circuit insulated from each other, and receives a load driving control signal comprising a Pulse Width Modulation (PWM) control signal from an external device and transmits the load driving control signal from the primary-side circuit through the secondary-side circuit to the load circuit; and a feedback circuit that detects the output voltage at the secondary side of the power conversion transformer, generates a feedback current at the primary side of the power conversion transformer on the basis of the detected output voltage, divides the feedback current into a first part and a second part, and performs a feedback control on the output voltage based on the first part of the feedback current, and a feedback terminal that supplies the primary-side circuit of the power converter circuit with the second part of the feedback current as an operation power varying substantially synchronously with a load state of the load circuit.