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    • 32. 发明授权
    • Circuit for use in a DC-DC converter having a booster module
    • 用于具有升压模块的DC-DC转换器的电路
    • US5838557A
    • 1998-11-17
    • US901191
    • 1997-07-28
    • Jonathan R. Wood
    • Jonathan R. Wood
    • H02M3/156H02M3/16
    • H02M3/156
    • The present invention includes a circuit for use with a booster module of a DC-DC converter that typically includes both a driver module and one or more booster modules. The present invention includes associated feedback control circuitry that allows the booster module to operate in the manner of a driver module. In a preferred embodiment, the feedback control circuitry contains a voltage reference device, a differential amplifier, and an optocoupler. In this preferred embodiment, the photodiode portion of the optocoupler electrically connects to an output circuit for the booster module, and the phototransistor portion of the optocoupler connects to an input circuit for the booster module.
    • 本发明包括与DC-DC转换器的升压模块一起使用的电路,其典型地包括驱动器模块和一个或多个升压模块。 本发明包括相关联的反馈控制电路,其允许升压模块以驱动器模块的方式工作。 在优选实施例中,反馈控制电路包含电压参考装置,差分放大器和光耦合器。 在该优选实施例中,光耦合器的光电二极管部分电连接到用于升压模块的输出电路,光耦合器的光电晶体管部分连接到用于升压模块的输入电路。
    • 38. 发明授权
    • Droop reduction circuit for charge pump buck converter
    • 电荷泵降压转换器的下降电路
    • US09413232B2
    • 2016-08-09
    • US14734720
    • 2015-06-09
    • Texas Instruments Incorporated
    • Erick Omar TorresByungchul Jang
    • H02M3/07H02M3/158H02M3/16H02M3/156H02M3/28H02M1/00
    • H02M3/07H02M3/156H02M3/1582H02M3/16H02M3/285H02M2001/009
    • A Charge Pump Buck Converter (CPBC) includes a BC including an inductor and a CP coupled in parallel. Control logic is coupled to a switch driver coupled to a power switch(es). Control circuitry includes a voltage sensor sensing Vout and a voltage level generator for generating a first voltage level coupled to the CP stage and a second voltage level coupled to a duty cycle/rate generator block providing an input to an under voltage (UV) monitor coupled between OUT and the control logic. The control circuitry disables the CP when Vout>a first Vout level and controls the BC to regulate to a second Vout level>the first Vout level. During handoff between CP and BC during power up if Vout drops below a UV threshold, the UV monitor block modifies an input applied to the control logic for increasing charging supplied to the inductor.
    • 电荷泵降压转换器(CPBC)包括一个BC,它包括并联耦合的电感和CP。 控制逻辑耦合到耦合到电源开关的开关驱动器。 控制电路包括感测Vout的电压传感器和用于产生耦合到CP级的第一电压电平的电压传感器以及耦合到占空比/速率发生器模块的第二电压电平,该负载电平发生器模块向欠耦合 在OUT和控制逻辑之间。 当Vout>第一Vout电平时,控制电路禁用CP,并且控制BC调节到第一Vout电平>第一Vout电平。 如果Vout下降到UV阈值以下,在上电期间CP和BC之间的切换期间,UV监视器块修改施加到控制逻辑的输入,以增加提供给电感器的充电。