会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明专利
    • Synchronous rectification type dc-dc converter
    • JP5350074B2
    • 2013-11-27
    • JP2009124569
    • 2009-05-22
    • 旭化成エレクトロニクス株式会社
    • 寿男 杉山
    • H02M3/155
    • PROBLEM TO BE SOLVED: To control a switching element with a simple configuration with less power consumption, with no requirement for detecting a current flowing an inductor or the switching element on a low side. SOLUTION: In response to a state that an output voltage has dropped below a predetermined reference voltage (Vref), a first operation state is started so that a switching element (2) on a high side and a switching element (3) on a low side are driven in complementary manner. In response to the state that the output voltage has risen beyond the predetermined reference voltage, a second operation state is started so that the switching elements on the high side and the low side are turned off. In the first operation state, if the current flowing the first switching element does not satisfy a predetermined reference current value (Ip), the first switching element is turned on, and if the current flowing the first switching element reaches the predetermined reference current value, the second switching element is turned on for a specified period of time. COPYRIGHT: (C)2011,JPO&INPIT