CPC H02M 3/1582 (2013.01) [H02M 3/1584 (2013.01)] | 19 Claims |
1. A power supply circuit comprising:
one or a plurality of first-stage voltage conversion circuits, an input end of the first-stage voltage conversion circuit being coupled to a power supply node, the first-stage voltage conversion circuit being configured to
convert a first voltage received at the input end into a second voltage, and
output the second voltage from an output end of the first-stage voltage conversion circuit, the second voltage being less than the first voltage, and the second voltage being greater than or equal to 0.6 V and less than or equal to 1.3 V; and
one or a plurality of second-stage voltage conversion circuits, an input end of the second-stage voltage conversion circuit being coupled to the output end of the first-stage voltage conversion circuit, the second-stage voltage conversion circuit being configured to
convert the second voltage into a third voltage, and
supply the third voltage to a load, wherein the third voltage is less than the second voltage, and a switching frequency of the second-stage voltage conversion circuit is greater than or equal to 30 MHz.
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