CPC H02M 3/33523 (2013.01) [H02M 1/0009 (2021.05)] | 17 Claims |
1. An isolated conversion apparatus with magnetic bias balance control, comprising:
an isolated converter comprising a transformer with a primary side, and the primary side having a primary-side winding and at least one switch bridge arm,
a controller coupled to the at least one switch bridge arm, and configured to provide a PWM (pulse width modulation) signal group to control the at least one switch bridge arm, and
a magnetic bias balance circuit coupled to two ends of the primary-side winding and the controller, and configured to provide a compensation voltage to the controller according to an average voltage value of a winding voltage across the two ends of the primary-side winding,
wherein the controller is configured to adjust a duty cycle of the PWM signal group according to the compensation voltage.
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