Patent ID: 11901820
Assignee: CHICONY POWER TECHNOLOGY CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 13:
14. The power supply apparatus with step-up and step-down conversion as claimed in claim 1, wherein the full-bridge LLC converter comprises:
a first switch, a first end of the first switch coupled to the step-up converter,
a second switch, a first end of the second switch coupled to a second end of the first switch,
a third switch, a first end of the third switch coupled to the secondary-side rectifying/filtering circuit,
a fourth switch, a first end of the fourth switch coupled to a second end of the third switch, wherein the first switch, the second switch, the third switch, and the fourth switch are controlled by the primary-side controller, and
a resonance capacitor, a first resonance inductor, and a second resonance inductor, connected in series to form a series-connected branch,
wherein a first end of the series-connected branch is coupled between the second end of the first switch and the first end of the second switch, and a second end of the series-connected branch is coupled between the second end of the third switch and the first end of the fourth switch.