Patent ID: 8107264
Filing Date: 2012-01-31
Classification: H02M

Abstract:
1. A slope compensation circuit for a peak current control mode power converter circuit, wherein the peak current control mode power converter circuit has a first forward converter, a second forward converter and a pulse width modulation (PWM) controller for controlling the first and second forward converters, wherein the first forward converter has a first high frequency transformer and a first primary switch serial connected to a primary side of the first high frequency transformer; and the second forward converter has a second high frequency transformer and a second primary switch serial connected to a primary side of the second high frequency transformer, wherein the slope compensation circuit comprises: a first charging circuit having two resistors to be serial connected to form a first serial connected resistor and a capacitor, wherein two terminals of the first serial connected resistor are respectively coupled to a first terminal of the capacitor and a first DC power source, wherein a second terminal of the capacitor is coupled to a plurality of output voltage feedback terminals of the PWM controller; a second charging circuit having two resistors to be serial connected to form a second serial connected resistor, wherein the second serial connected resistor is parallel connected to the first serial connected resistor; and a discharging circuit having