Invention Grant
- Patent Title: Switching control circuit and power supply circuit
-
Application No.: US17032927Application Date: 2020-09-25
-
Publication No.: US11515782B2Publication Date: 2022-11-29
- Inventor: Ryuunosuke Araumi , Ryuji Yamada
- Applicant: FUJI ELECTRIC CO., LTD.
- Applicant Address: JP Kawasaki
- Assignee: FUJI ELECTRIC CO., LTD.
- Current Assignee: FUJI ELECTRIC CO., LTD.
- Current Assignee Address: JP Kawasaki
- Agency: Rabin & Berdo, P.C.
- Priority: JPJP2019-188843 20191015
- Main IPC: H02M1/42
- IPC: H02M1/42 ; H02M1/44 ; H02M1/12

Abstract:
A switching control circuit that controls switching of a switching device, the switching control circuit includes a frequency modulation circuit that generates an oscillator signal, and modulates a frequency of an oscillator signal with a predetermined frequency and a modulation index of two or more, and a drive circuit that drives the switching device in response to a signal corresponding to the modulated oscillator signal, the predetermined frequency being higher than a frequency indicative of a value that is a quarter of a half width of a bandpass filter used for measuring noise generated when the switching device is driven.
Public/Granted literature
- US20210111638A1 SWITCHING CONTROL CIRCUIT AND POWER SUPPLY CIRCUIT Public/Granted day:2021-04-15
Information query