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    CONSTANT-VOLTAGE AND CONSTANT-CURRENT BUCK CONVERTER AND CONTROL CIRCUIT
    1.
    发明申请
    CONSTANT-VOLTAGE AND CONSTANT-CURRENT BUCK CONVERTER AND CONTROL CIRCUIT 有权
    恒定电流和恒定电流转换器和控制电路

    公开(公告)号：US20160164408A1

    公开(公告)日：2016-06-09

    申请号：US15019773

    申请日：2016-02-09

    申请人： BCD SEMICONDUCTOR MANUFACTURING CO., LTD.

    发明人： HU WANG ,  Yajiang Zhu ,  Ruixia Fei ,  Shuzhuang LV

    IPC分类号： H02M3/156 ,  H02M1/08

    CPC分类号： H02M3/156 ,  H02M1/08 ,  H02M3/10 ,  H02M7/2176 ,  H02M2001/0009 ,  H02M2001/0022

    摘要： A control circuit is provided for a buck converter that includes at least an inductor coupled to an output of the buck converter. The control circuit includes a power switch configured for coupling to a line voltage and configured for charging the inductor, an input line voltage sampling circuit, and a constant-voltage (CV) and constant-current (CC) control module coupled to the power switch. During a charging period of the inductor, the CV and CC control module is configured to control the power switch to provide a constant output current by maintaining a constant peak inductor current, even when the input line voltage changes. During a discharging period of the inductor, the CV and CC control module is configured to monitor the sensed output voltage to control the power switch to provide a constant output voltage.

    摘要翻译： 提供了一种用于降压转换器的控制电路，其包括耦合到降压转换器的输出的至少一个电感器。 控制电路包括被配置为耦合到线路电压并被配置为对电感器充电的电源开关，输入线电压采样电路和耦合到电源开关的恒压（CV）和恒流（CC）控制模块 。 在电感器的充电期间，CV和CC控制模块配置为通过保持恒定的峰值电感电流来控制电源开关以提供恒定的输出电流，即使输入线路电压发生变化。 在电感器的放电期间，CV和CC控制模块被配置为监视感测的输出电压，以控制电源开关以提供恒定的输出电压。