公开(公告)号：US20240195297A1

公开(公告)日：2024-06-13

申请号：US18080607

申请日：2022-12-13

Applicant: QUALCOMM Incorporated

Inventor： Xiaopeng ZHONG ,  Dinesh Jagannath ALLADI

IPC: H02M3/155 ,  H02M1/08 ,  H02M1/32 ,  H04B1/40

CPC classification number: H02M3/155 ,  H02M1/08 ,  H02M1/32 ,  H04B1/40

Abstract: An apparatus including: a boost voltage generator configured to generate a boost voltage at an output; a first field effect transistor (FET) including a drain/source terminal coupled to the output of the boost voltage generator; a discharging circuit coupled to a source/drain terminal of the first FET, wherein the discharging circuit is configured to discharge the output of the boost voltage generator via the first FET in response to an asserted discharging signal; and a gate voltage boost circuit configured to generate a gate voltage for a gate of the first FET, wherein the gate voltage boost circuit is configured to boost the gate voltage in response to the asserted discharging signal. Another implementation may include a current injection circuit configured to generate and inject a current into the discharging circuit in lieu of or in addition to the gate voltage boost circuit.

公开(公告)号：US20240322837A1

公开(公告)日：2024-09-26

申请号：US18190033

申请日：2023-03-24

Applicant: QUALCOMM Incorporated

Inventor： Shashank Rajendra PRASAD ,  Xiaopeng ZHONG

IPC: H03M1/46

CPC classification number: H03M1/466

Abstract: Aspects of the present disclosure provide input-adaptive analog-to-digital conversion in which the number of conversion cycles used to convert an input signal into a digital signal is adapted based on the level (i.e., amplitude) of the input voltage. In certain aspects, the input voltage is compared with one or more threshold voltages, and the number of conversion cycles is determined based on the comparison. In certain aspects, a most significant bit (MSB) capacitor in a capacitive digital-to-analog (DAC) is split into two or more capacitors to provide the one or more threshold voltages.

公开(公告)号：US20220229455A1

公开(公告)日：2022-07-21

申请号：US17154865

申请日：2021-01-21

Applicant: QUALCOMM Incorporated

Inventor： Xiaopeng ZHONG ,  Masoud ROHAM

IPC: G05F1/575 ,  G05F1/46 ,  G05F1/445 ,  G05F1/565 ,  G05F3/26

Abstract: In certain aspects, a voltage regulator includes a pass device coupled between an input of the voltage regulator and an output of the voltage regulator. The voltage regulator also includes an amplifying circuit having a first input, a second input, and an output, wherein the first input is configured to receive a reference voltage, the second input is coupled to the output of the voltage regulator via a feedback path, and the output of the amplifying circuit is coupled to a gate of the pass device. The voltage regulator further includes a first current source coupled between a supply rail and the amplifying circuit, and a capacitor coupled between the first current source and the output of the voltage regulator.