Patent ID: 11894773
Assignee: SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. The buck-boost circuit according to claim 9, further comprising:
a control module configured to control switches based on a relationship between a target voltage Vtar and an input voltage VBAT,
wherein said controlling the switches comprises:
in response to Vtar<VBAT−ΔV being satisfied, turning on the sixth switch, enabling the first switch and the second switch to simultaneously operate, enabling the third switch and the fourth switch to simultaneously operate, and complementarily turning on the first switch and the third switch, wherein ΔV denotes a set voltage difference;
in response to VBAT−ΔV≤Vtar≤VBAT+ΔV being satisfied, turning off the first switch, the third switch, and the fourth switch, and turning on the second switch and the sixth switch; and
in response to Vtar>VBAT+ΔV being satisfied, turning off the fourth switch and the sixth switch, enabling the second switch and the third switch to operate simultaneously, and complementarily turning on the second switch and the first switch.