公开(公告)号：US09642587B2

公开(公告)日：2017-05-09

申请号：US15000115

申请日：2016-01-19

Applicant: DELTA ELECTRONICS, INC.

Inventor： Hongyuan Jin ,  Jun Liu ,  Dezhi Jiao

IPC: H02M3/156 ,  A61B6/00 ,  H02M3/335 ,  H02M3/337 ,  H02M1/00

CPC classification number: A61B6/54 ,  H02M3/156 ,  H02M3/3353 ,  H02M3/3378 ,  H02M2001/0058 ,  H02M2001/007 ,  Y02B70/1491

Abstract: A power supply device includes a power supply module, a high voltage conversion module and a control module. The high voltage conversion module includes a first high-voltage output module and a second high-voltage output module both connected to the power supply module. The control module is connected to the first high-voltage output module and the second high-voltage output module to respectively sample a first output voltage of the first high-voltage output module and a second output voltage of the second high-voltage output module and generate a power control signal, a first control signal and a second control signal respectively used to control the power supply module, the first high-voltage output module and the second high-voltage output module. There is a phase difference between the first control signal and the second control signal to interleaving control the first high-voltage output module and the second high-voltage output module.

公开(公告)号：US10461628B1

公开(公告)日：2019-10-29

申请号：US16231929

申请日：2018-12-24

Applicant: DELTA ELECTRONICS, INC.

Inventor： Hongbao Wang ,  Yanling Zong ,  Liangliang Ren ,  Dezhi Jiao ,  Jinfa Zhang

IPC: H02M1/42 ,  H02M1/08 ,  H02M7/04 ,  H02M1/00

Abstract: The present disclosure provides a control circuit and a control method, where the control circuit includes: a signal detection unit, a ZCD signal acquisition unit, a signal selection unit, a frequency limiting unit, and a PWM control signal generation unit; where the signal detection unit, the ZCD signal acquisition unit, the signal selection unit, the frequency limiting unit, and the PWM control signal generation unit are connected in cascade. The control circuit and the control method provided in the present disclosure reduce processing delay of a ZCD signal and improve signal processing accuracy of a PFC system.