Patent ID: 9106140
Filing Date: 2015-08-11
Classification: H02M

Abstract:
1. A control circuit for a DC/DC converter, wherein the DC/DC converter comprises: a transformer comprising a primary winding, a secondary winding, and an auxiliary winding; a switching transistor arranged on a current path of the primary winding of the transformer; and a detection resistor arranged on a path of the switching transistor, and wherein the control circuit comprises: a driver configured to perform switching of the switching transistor according to the pulse signal, and wherein the pulse modulator comprises: and wherein the pulse modulator is configured to generate a pulse signal which is switched to an on level that corresponds to an on state of the switching transistor when the set signal is asserted, and which is switched to an off level that corresponds to an off state of the switching transistor when the reset signal is asserted, and wherein the set signal generating unit comprises: