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Title:
CRITICAL-VALUE OSCILLATION CONTROL APPARATUS AND DEVICE, AND WIRELESS EARPHONE
Document Type and Number:
WIPO Patent Application WO/2023/169470
Kind Code:
A1
Abstract:
Provided in the embodiments of the present application are a critical-value oscillation control apparatus and device, and a wireless earphone. The present application is characterized in that the control apparatus comprises: a first operational amplifier, a second operational amplifier, a comparator, a logic control module, a DCDC controller, a timing module and a logic processing module, wherein the logic control module is used for determining the value of a mode conversion indication signal according to a working mode within a first operation period, and the mode conversion indication signal is an output signal of the DCDC controller; the logic control module is used for determining an overvoltage determination threshold within a second operation period according to the value of the mode conversion indication signal, the type of a load current and an output signal of the logic processing module, which second operation period is a period following the first operation period; and the comparator is used for performing overvoltage determination within the second operation period according to the overvoltage determination threshold. The accuracy of determining an overvoltage determination threshold can be improved, such that the formation of oscillation ripples is prevented, thereby improving the stability.

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Inventors:
YANG MING (CN)
ZHAGN LIANG (CN)
Application Number:
PCT/CN2023/080306
Publication Date:
September 14, 2023
Filing Date:
March 08, 2023
Export Citation:
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Assignee:
SHENZHEN INJOINIC TECH CO LTD (CN)
International Classes:
H02M1/14; G01R19/165; H02M1/00; H02M3/00; H04R3/00
Foreign References:
CN114337211A2022-04-12
CN108429456A2018-08-21
CN107546964A2018-01-05
CN111509978A2020-08-07
CN204103764U2015-01-14
US20100188061A12010-07-29
US20100320983A12010-12-23
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
Download PDF:
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