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    • 8. 发明申请
    • CURRENT-MODE CONTROLLED DC-DC CONVERTER
    • 电流模式控制DC-DC转换器
    • US20090262555A1
    • 2009-10-22
    • US12250839
    • 2008-10-14
    • Hideki AsukeHideharu TakanoMasaki KanazawaMamoru TsuruyaMasayoshi YamamotoHiroyuki HoriiShigeyuki Funabiki
    • Hideki AsukeHideharu TakanoMasaki KanazawaMamoru TsuruyaMasayoshi YamamotoHiroyuki HoriiShigeyuki Funabiki
    • H02M3/335
    • H02M3/1584H02M2001/0064
    • A current-mode controlled DC-DC converter includes a comparator comparing a first or second current detection signal with a first or second reference current that is based on an error voltage of a voltage detection signal, a pulse generator generating a first pulse signal whose ON time is longer than an interval between when the second current detection signal reaches a minimum value and when the second current detection signal reaches the second reference current, a pulse generator generating a second pulse signal whose ON time is longer than an interval between when the first current detection signal reaches a minimum value and when the first current detection signal reaches the first reference current, the second pulse signal being behind the first pulse signal by a half period, and a PWM circuit generating a first or second PWM signal according to the pulse signal and an output signal from the comparator, thereby turning on/off a switch.
    • 电流模式控制的DC-DC转换器包括比较第一或第二电流检测信号与基于电压检测信号的误差电压的第一或第二参考电流的比较器,脉冲发生器产生第一脉冲信号,其ON 时间长于当第二电流检测信号达到最小值之间的间隔和当第二电流检测信号达到第二参考电流时的间隔;脉冲发生器,其生成第二脉冲信号,其接通时间长于第一电流检测信号之间的间隔 电流检测信号达到最小值,并且当第一电流检测信号达到第一参考电流时,第二脉冲信号在第一脉冲信号之后半个周期,PWM电路根据脉冲产生第一或第二PWM信号 信号和来自比较器的输出信号,从而打开/关闭开关。