Patents Represented by Attorney, Agent or Law Firm Donald R. Seudebaker
  • Switching regulator and LSI system
    Patent number: 6429633
    Abstract: In a switching regulator, switching noise is reduced with keeping high conversion efficiency. The switching regulator includes plural output switching transistors 21 through 23 having different on-resistances, which are operated nadescending order of on-resistance in the on operation and are operated in an ascending order of on-resistance in the off operation. In this manner, abrupt current change can be suppressed in the switching operation, resulting in reducing di/dt noise derived from a parasitic inductor 102.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: August 6, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Jun Kajiwara, Katsuji Satomi, Shiro Sakiyama, Masayoshi Kinoshita, Katsuhiro Ootani