| 主权项 |
1. A control circuit of a flyback power converter, the flyback power converter comprising a power switch, a primary side coil, a secondary side coil, and an inductive coil, the control circuit comprising:
a first reference signal generating circuit, configured to operably generate a first reference signal; a reference signal adjusting circuit, coupled with the first reference signal generating circuit, configured to operably generate an adjustment signal according to a test signal corresponding to an output voltage signal of the flyback power converter and the first reference signal, and to operably generate a second reference signal according to the adjustment signal and the first reference signal when the reference signal adjusting circuit is coupled with the test signal; an error detection circuit, coupled with the reference signal adjusting circuit, configured to operably generate an error signal according to the second reference signal and a feedback signal; and a control signal generating circuit, coupled with the error detection circuit, configured to operably generate a control signal according to the error signal to control operations of the power switch to thereby adjust the test signal; wherein the feedback signal corresponds to a current flowing through the primary side coil or corresponds to a sensing voltage of the inductive coil. |
