Patent ID: 6781352
Filing Date: 2004-08-24
Classification: H02M,Y02B,Y02P

Abstract:
A continuous conduction mode (CCM) power factor corrected boost converter circuit comprising:a rectifier connectable to an ac input and having a rectified dc output provided across a dc bus; an inductor having first and second terminals connected in one leg of the dc bus, a first terminal of the inductor coupled to the output of said rectifier; an integrated circuit comprising a control circuit and a switch controlled by the control circuit, the integrated circuit comprising a housing enclosing the control circuit and switch, the integrated circuit having a power terminal, a ground terminal, a first control input terminal coupled to an output of the converter circuit, and a second control input terminal coupled to a sensor for sensing current in the dc bus and further having an output terminal connected to the switch and coupled to the second terminal of the inductor; a boost rectifier diode having a first terminal coupled to the output terminal of the integrated circuit and having a second terminal; and a storage capacitor connected to the second terminal of the diode; wherein the control circuit comprises a one cycle control circuit having an integrator reset by a clock signal for each cycle of the clock signal, the integrator receiving as an input a signal provided on said first control input terminal.