CPC H02M 1/0035 (2021.05) [H02M 1/0025 (2021.05)] | 20 Claims |
1. An intermittent power saving mode control method, comprising:
controlling a switching power supply to operate alternately between a work mode and a sleep mode under a burst mode;
controlling the switching power supply to operate in the sleep mode according a first reference voltage, the first reference voltage is constant;
controlling the switching power supply to operate in the work mode according to a second reference voltage;
monitoring an alternating frequency of the switching power supply in the burst mode, wherein the alternating frequency is a frequency value that the switching power supply changes from a current work mode to a next work mode or from a current sleep mode to a next sleep mode, wherein in the work mode, a power switch of the switching power supply is periodically turned on and turned off and in sleep mode, the switching power supply remains off; and
adjusting the second reference voltage according to the alternating frequency, so that the alternating frequency is within a range of a first frequency to a second frequency.
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