公开(公告)号：US20240385670A1

公开(公告)日：2024-11-21

申请号：US18319047

申请日：2023-05-17

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： WEI-LING CHEN

IPC: G06F1/3203

Abstract: An operation method of a power supply circuit which is provided with an input voltage to generate a positive output voltage and a negative output voltage is proposed. The power supply circuit includes five switches and is electrically connected with an inductor through a first inductor node and a second inductor node. The disclosed operation method includes determining the power supply circuit to operate in a mode, which includes three operation phases, a first, second and third phase. Energizing currents can be generated and provided both to enhance the positive output voltage and negative output voltage by employing the proposed operation method. Since there is no transition of the voltage level of the second inductor node during the second phase to third phase transition, it is believed that the present invention effectively achieves in suppressing redundant power switching loss and providing optimized output power efficiency.

公开(公告)号：US20240405673A1

公开(公告)日：2024-12-05

申请号：US18325223

申请日：2023-05-30

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： WEI-LING CHEN

IPC: H02M3/156

Abstract: A power converter includes an input, an output, a first switch, a second switch, a third switch, a fourth switch, a fifth switch, and a sixth switch. The first switch and the second switch are coupled between the input and a reference voltage. The third switch is coupled between a first capacitor and the fourth switch. The first capacitor is coupled to the reference voltage. The fourth switch is coupled between the output and the third switch. A terminal of a second capacitor is coupled between the third switch and the fourth switch, and another terminal of the second capacitor is coupled between the first switch and the second switch through an inductor. The fifth switch is coupled between the reference voltage and the common node of the inductor and the second capacitor. The sixth switch is coupled between the common node and the first capacitor.