公开(公告)号：US11095216B2

公开(公告)日：2021-08-17

申请号：US14630506

申请日：2015-02-24

Applicant: QUALCOMM Incorporated

Inventor： Yung-Chung Lo ,  Gang Zhang ,  Yiping Han ,  Frederic Bossu ,  Tsai-Pi Hung ,  Jae-Hong Chang

IPC: H02M3/156 ,  H02M1/00 ,  G05F1/575

Abstract: A method, an apparatus, and a computer program product are provided. The apparatus may be a regulator circuit. The regulator circuit includes a first voltage regulator to regulate a first input voltage to the first voltage regulator, the first voltage regulator including a P-type metal-oxide-semiconductor (PMOS), and a second voltage regulator to regulate a second input voltage to the second voltage regulator, the second voltage regulator including an N-type metal-oxide-semiconductor (NMOS). In an aspect, the first voltage regulator is coupled to the second voltage regulator.

公开(公告)号：US09344036B1

公开(公告)日：2016-05-17

申请号：US14615794

申请日：2015-02-06

Applicant: QUALCOMM Incorporated

Inventor： Jae-Hong Chang

IPC: H03B5/12 ,  H03L5/00

CPC classification number: H03B5/1234 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1278 ,  H03L5/00

Abstract: Certain aspects of the present disclosure generally relate to automatic amplitude control of an oscillating signal output from a voltage-controlled oscillator (VCO) using feedback from an amplitude adjustment circuit. The VCO may comprise cross-coupled metal oxide semiconductor (MOS) transistors coupled to a resonant tank circuit. Gates of the cross-coupled transistors are configured to control an amplitude of the oscillating signal generated by the resonant tank circuit. In certain aspects, the amplitude adjustment circuit may comprise a peak detector that generates a signal that is representative of the amplitude of the oscillating signal. The signal generated by the peak detector may be compared to a reference voltage by an amplifier. The amplifier may generate a feedback signal to control the gates of the cross-coupled MOS transistors based on the comparison, thereby adjusting the amplitude of the oscillating signal.

Abstract translation: 本公开的某些方面通常涉及使用来自振幅调节电路的反馈从压控振荡器（VCO）输出的振荡信号的自动幅度控制。 VCO可以包括耦合到谐振回路的交叉耦合金属氧化物半导体（MOS）晶体管。 交叉耦合晶体管的栅极被配置为控制由谐振回路产生的振荡信号的幅度。 在某些方面，幅度调整电路可以包括产生表示振荡信号振幅的信号的峰值检测器。 由峰值检测器产生的信号可以通过放大器与参考电压进行比较。 放大器可以基于比较产生反馈信号来控制交叉耦合MOS晶体管的栅极，由此调整振荡信号的幅度。

公开(公告)号：US11726513B2

公开(公告)日：2023-08-15

申请号：US17443093

申请日：2021-07-20

Applicant: QUALCOMM Incorporated

Inventor： Yung-Chung Lo ,  Gang Zhang ,  Yiping Han ,  Frederic Bossu ,  Tsai-Pi Hung ,  Jae-Hong Chang

IPC: G05F1/575 ,  H02M3/156 ,  H02M1/00

CPC classification number: G05F1/575 ,  H02M3/156 ,  H02M1/0077

Abstract: A method, an apparatus, and a computer program product are provided. The apparatus may be a regulator circuit. The regulator circuit includes a first voltage regulator to regulate a first input voltage to the first voltage regulator, the first voltage regulator including a P-type metal-oxide-semiconductor (PMOS), a second voltage regulator to regulate a second input voltage to the second voltage regulator, and a switch circuit to selectively activate at least one of the first voltage regulator or the second voltage regulator. In one aspect, the second voltage regulator includes an N-type metal-oxide-semiconductor (NMOS). In one aspect, the second voltage regulator comprises a two-stage operational transconductance amplifier (OTA) circuit. In an aspect, the first voltage regulator is coupled to the second voltage regulator.