Controller in a voltage mode buck converter for implementing a mode-switch function and an over-current protection by a multifunction pin and method thereof
    1.
    发明授权
    Controller in a voltage mode buck converter for implementing a mode-switch function and an over-current protection by a multifunction pin and method thereof 有权
    用于通过多功能引脚实现模式切换功能和过电流保护的电压模式降压转换器中的控制器及其方法

    公开(公告)号:US07098632B2

    公开(公告)日:2006-08-29

    申请号:US11098492

    申请日:2005-04-05

    IPC分类号: G05F1/652

    CPC分类号: H02M1/32 H02H7/1213 H02M3/158

    摘要: In a voltage mode buck converter having a pair of switches connected in series by a phase node to be switched by a pair of drive signals generated from a first control signal, a phase resistor is connected between a multifunction pin and the phase node, and a controller generates a second control signal and a third control signal from the second drive signal to sense the voltage on the multifunction pin respectively to generate an over-current signal and a CCM mode switch signal to switch the converter between a CCM mode and a DCM mode.

    摘要翻译: 在具有由相位节点串联连接的一对开关的电压模式降压转换器中,通过由第一控制信号产生的一对驱动信号切换,相位阻抗器连接在多功能引脚和相位节点之间, 控制器从第二驱动信号产生第二控制信号和第三控制信号,以分别感测多功能引脚上的电压,以产生过流信号和CCM模式切换信号,以在CCM模式和DCM模式之间切换转换器 。

    Current sense circuit and method for a DC-to-DC converter
    2.
    发明授权
    Current sense circuit and method for a DC-to-DC converter 有权
    DC-DC转换器的电流检测电路和方法

    公开(公告)号:US07327129B2

    公开(公告)日:2008-02-05

    申请号:US11099458

    申请日:2005-04-06

    IPC分类号: G05F1/00 G01R19/00

    摘要: In a DC-to-DC converter, a current sense circuit and method generate a first current by a first transconductive amplifier responsive to the output current of the converter for a controller to switch a high side switch and a low side switch, a second current from a first voltage by a second transconductive amplifier, a second voltage from the second current by an adjustable resistor, and a bias signal from a difference between the second voltage and a third voltage by a bias apparatus to adjust the transconductances of the first and second transconductive amplifiers.

    摘要翻译: 在DC-DC转换器中,电流检测电路和方法响应于转换器的输出电流产生第一电流,用于控制器切换高侧开关和低侧开关,第二电流 通过第二跨导放大器的第一电压,来自第二电流的可调电阻器的第二电压以及由偏置装置从第二电压和第三电压之间的差的偏置信号来调节第一和第二电压的跨导 跨导放大器。