Invention Grant
- Patent Title: Switching power supply device
- Patent Title (中): 开关电源装置
-
Application No.: US12888160Application Date: 2010-09-22
-
Publication No.: US08305775B2Publication Date: 2012-11-06
- Inventor: Masaaki Shimada
- Applicant: Masaaki Shimada
- Applicant Address: JP Saitama
- Assignee: Sanken Electric Co., Ltd.
- Current Assignee: Sanken Electric Co., Ltd.
- Current Assignee Address: JP Saitama
- Agency: Wilmer Cutler Pickering Hale and Dorr LLP
- Priority: JP2009-228289 20090930
- Main IPC: H02M3/335
- IPC: H02M3/335
Abstract:
During a soft start period at the time of startup, a PWM control is carried out. After the soft start period ends, the PWM control is converted into a frequency control, so that stress of a switching element is suppressed and the audible oscillation frequency is removed. As a result, it is possible to obtain a switching power supply device having high power conversion efficiency.
Public/Granted literature
- US20110075450A1 SWITCHING POWER SUPPLY DEVICE Public/Granted day:2011-03-31
Information query
IPC分类:
