CPC H02M 3/33523 (2013.01) [H02M 1/0032 (2021.05)] | 20 Claims |
1. A method comprising:
determining, by a primary side controller of a power converter, that the power converter is in a no-load or ultra-light load mode of operation;
in response to determining that the power converter is in a no-load or ultra-light load mode of operation, allowing, by the primary side controller, a voltage amplitude of a feedback signal to rise towards a voltage amplitude that is greater than or equal to a first threshold voltage level;
upon determining, by the primary side controller, that the voltage amplitude of the feedback signal is greater than or equal to the first threshold voltage level, issuing a first sequence of one or more enabling pulses to a primary side switch of the power converter to reduce a voltage amplitude of the feedback signal;
upon determining, by the primary side controller, that the voltage amplitude of the feedback signal is greater than or equal to a second threshold voltage level, entering a normal mode of operation of the power converter; and
issuing, by the primary side controller, a second sequence of one or more enabling pulses to the primary side switch of the power converter during normal operation of the power converter;
wherein:
the voltage amplitude of the feedback signal is less than the first threshold voltage level during the normal mode of operation of the power converter.
|