Patent ID: 6058026
Filing Date: 2000-05-02
Classification: H02M

Abstract:
A DC--DC converter, comprising:a transformer having a primary winding and a secondary winding, said secondary winding including first and second terminals;an input circuit coupled to said primary winding for coupling an input DC voltage to said primary winding;a first output channel coupling said first terminal of said secondary winding to a first output, said first output channel including a first switch connected in series with a first inductor, said first switch having an on and off cycle time;a second output channel coupling said second terminal of said secondary winding to a second output, said second output channel including a second inductor;a first and a second capacitor coupling said first and second outputs to a return lead;a second switch coupling said first output channel to said return lead;a third switch coupling said second output channel to said return lead;a first pulse width modulator coupled between one of said outputs to drive said input circuit; anda second pulse width modulator coupled between said first output and said first switch for controlling said first switch on and off cycle time to thereby regulate the duty cycle of said first output channel independently of said second output channel.