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    • 1. 发明授权
    • Switching regulator with over-current protection
    • 开关稳压器具有过流保护功能
    • US07498789B2
    • 2009-03-03
    • US11516538
    • 2006-09-07
    • Ming-Han Lee
    • Ming-Han Lee
    • G05F1/56
    • H02M1/32H02M3/156
    • A switching regulator with over-current protection is disclosed. The invention comprises an error amplifier, a pulse width modulator, an over-current protection unit, a gate driver, a tank circuit and a load. According to the invention, the variation of the output current outside a chip is detected and controlled by monitoring the voltage level of the error signal for over-current protection, thus reducing power dissipation caused by an additive resistor and raising efficiency of voltage conversion.
    • 公开了一种具有过电流保护功能的开关稳压器。 本发明包括误差放大器,脉宽调制器,过流保护单元,栅极驱动器,储能电路和负载。 根据本发明,通过监视用于过电流保护的误差信号的电压电平来检测和控制芯片外的输出​​电流的变化,从而降低由添加电阻引起的功率耗散并提高电压转换的效率。
    • 7. 发明授权
    • Dynamic bias control circuit and related apparatus for digital-to-analog converters
    • 用于数模转换器的动态偏置控制电路及相关装置
    • US07714755B2
    • 2010-05-11
    • US11836771
    • 2007-08-09
    • Ming-Han Lee
    • Ming-Han Lee
    • H03M1/66
    • H03M1/0604H03M1/742
    • A dynamic bias control circuit includes a current source, a first switch, a differential amplifier, and a third switch. The current source outputs a first current. The first switch is coupled to an output end of the current source for generating the first current. The differential amplifier includes a first input end for receiving a reference voltage and a second input end coupled to the first switch. The third switch is coupled to an output end of the differential amplifier and to the first end of the first switch for adjusting a voltage at the first end of the first switch according to a result outputted from the differential amplifier. A control end of the first switch is coupled to a second switch. The second switch is used for inputting a second current into the second switch, wherein the second current to the first current is a predetermined ratio.
    • 动态偏置控制电路包括电流源,第一开关,差分放大器和第三开关。 电流源输出第一个电流。 第一开关耦合到电流源的输出端,用于产生第一电流。 差分放大器包括用于接收参考电压的第一输入端和耦合到第一开关的第二输入端。 第三开关耦合到差分放大器的输出端和第一开关的第一端,用于根据从差分放大器输出的结果调节第一开关的第一端的电压。 第一开关的控制端耦合到第二开关。 第二开关用于将第二电流输入到第二开关中,其中到第一电流的第二电流是预定比率。