公开(公告)号：US20170229961A1

公开(公告)日：2017-08-10

申请号：US15073484

申请日：2016-03-17

Applicant: BROADCOM CORPORATION

Inventor： He Zhang ,  Jinghua Zhang ,  Yow Ching Cheng ,  Junle Pan ,  David Seng Poh Ho

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H02M3/1584 ,  H02M2003/1586

Abstract: A regulator circuit includes a multiphase ramp generator circuit, an amplifier circuit configured to receive a plurality of phase sense signals and provide a plurality of respective error signals, and an adder circuit configured to receive the error signals and ramp generator signals. The ramp generator signals are received from the multiphase ramp generator circuit and the adder circuit is configured to provide a plurality of respective adjusted ramp generator signals. The regulator can be a multiphase switching regulator circuit.

公开(公告)号：US09753474B2

公开(公告)日：2017-09-05

申请号：US14173742

申请日：2014-02-05

Applicant: BROADCOM CORPORATION

Inventor： Jinghua Zhang ,  Ricky Setiawan ,  Jeffrey Norwood Harrison

IPC: G05F1/56 ,  G05F1/575

CPC classification number: G05F1/575 ,  G05F1/56

Abstract: A low-power low-dropout (LDO) voltage regulator device includes an error amplifier, a level-shifter circuit, and an NMOS pass transistor. The error amplifier compares a sampled portion of a regulated output voltage of the LDO voltage regulator with a reference voltage and generates an error signal. The level-shifter circuit is coupled to the error amplifier. The NMOS pass transistor provides the regulated output voltage with low dropout operation. The level-shifter circuit can shift a voltage level of the error signal to facilitate the low dropout operation of the NMOS pass transistor.

公开(公告)号：US20150198960A1

公开(公告)日：2015-07-16

申请号：US14173742

申请日：2014-02-05

Applicant: BROADCOM CORPORATION

Inventor： Jinghua Zhang ,  Ricky Setiawan ,  Jeffrey Norwood Harrison

IPC: G05F1/575

CPC classification number: G05F1/575 ,  G05F1/56

Abstract: A low-power low-dropout (LDO) voltage regulator device includes an error amplifier, a level-shifter circuit, and an NMOS pass transistor. The error amplifier compares a sampled portion of a regulated output voltage of the LDO voltage regulator with a reference voltage and generates an error signal. The level-shifter circuit is coupled to the error amplifier. The NMOS pass transistor provides the regulated output voltage with low dropout operation. The level-shifter circuit can shift a voltage level of the error signal to facilitate the low dropout operation of the NMOS pass transistor.

Abstract translation: 低功率低压差（LDO）稳压器装置包括误差放大器，电平移位器电路和NMOS传输晶体管。 误差放大器将LDO稳压器的调节输出电压的采样部分与参考电压进行比较，并产生误差信号。 电平移位电路耦合到误差放大器。 NMOS传输晶体管提供具有低压差操作的稳压输出电压。 电平移位器电路可以移位误差信号的电压电平，以便于NMOS传输晶体管的低压差操作。