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    • 5. 发明申请
    • Power Supply with Digital Control Loop
    • 带数字控制回路的电源
    • US20090245504A1
    • 2009-10-01
    • US12060263
    • 2008-04-01
    • Riad WahbyMichael J. MillsJeffrey A. WhaleyMarius GoldenbergIon C. Tesu
    • Riad WahbyMichael J. MillsJeffrey A. WhaleyMarius GoldenbergIon C. Tesu
    • H04M9/00
    • H04M19/001
    • One embodiment of a power supply apparatus includes a first switcher coupled to provide VOUT from a VSUPPLY. A cascaded second switcher is coupled to provide a subscriber line interface circuit target VBAT from VOUT, wherein the first switcher is placed in one of an active mode and an inactive mode in accordance with a function of VSUPPLY and VBAT, wherein in the active mode  VOUT VSUPPLY  ≥ 1 , wherein in the inactive mode VOUT≈VSUPPLY.
    • 电源设备的一个实施例包括耦合以从VSUPPLY提供VOUT的第一切换器。 级联的第二切换器被耦合以从VOUT提供用户线接口电路目标VBAT,其中根据VSUPPLY和VBAT的功能将第一切换器置于活动模式和非活动模式之一中,其中在活动模式< maths id =“MATH-US-00001”num =“00001”> mi> > 其中处于非活动模式VOUT≈VSUPPLY。
        • 6. 发明申请
        • Power Supply with Digital Control Loop
        • 带数字控制回路的电源
        • US20090243701A1
        • 2009-10-01
        • US12060268
        • 2008-04-01
        • Geoffrey ThompsonSiddharth SundarDouglas R. FreyRussell J. ApfelMarius GoldenbergIon C. TesuRiad WahbyMichael J. Mills
        • Geoffrey ThompsonSiddharth SundarDouglas R. FreyRussell J. ApfelMarius GoldenbergIon C. TesuRiad WahbyMichael J. Mills
        • H03K17/56
        • H03K17/16
        • One embodiment of an apparatus for switching a transistor includes a first current mirror providing iB=K1i1, as a transistor base current, wherein the first current mirror is selectively driven by a current source i B   MAX K 1 . A second current mirror providing a feedback signal i2=K2iD to the first current mirror such that i 1 + i 2 = i B   MAX K 1 , wherein iD contributes to the transistor collector current, wherein iB=iBMAX−K1K2iD.
        • 用于切换晶体管的装置的一个实施例包括提供iB = K1i1的第一电流镜作为晶体管基极电流,其中第一电流镜由电流源选择性地驱动 B K 1 提供反馈信号的第二个电流镜 i2 = K2iD到第一个电流镜像,使得 1 + 2 mrow> = B “0.3em”height =“0.3ex”/> 最大 K 1