Title:
POWER SUPPLY CIRCUIT, POWER SUPPLY METHOD, AUDIO POWER AMPLIFIER AND INTEGRATED CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2022/095580
Kind Code:
A1
Abstract:
Disclosed are a power supply circuit, a power supply method, an audio power amplifier and an integrated circuit. The power supply circuit applied to an audio power amplifier may comprise: a measurement sub-circuit, which is used for measuring the voltage of an audio signal that is input to an audio power amplifier, wherein the voltage of the audio signal corresponds to the output power of the audio power amplifier; a control sub-circuit, which is used for determining a target reference voltage range according to a voltage range of the audio signal within a predetermined time period, wherein the target reference voltage range is selected from a plurality of predetermined reference voltage ranges, and the voltage range of the audio signal within the predetermined time period is included in the target reference voltage range; and a power supply sub-circuit, which is used for generating, on the basis of the target reference voltage range, a power supply voltage that matches the output power of the audio power amplifier, so as to supply power to the audio power amplifier.
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Inventors:
LU JIE (CN)
KE YI (CN)
LIU DEHENG (CN)
MA KEZHENG (CN)
KE YI (CN)
LIU DEHENG (CN)
MA KEZHENG (CN)
Application Number:
PCT/CN2021/116871
Publication Date:
May 12, 2022
Filing Date:
September 07, 2021
Export Citation:
Assignee:
WUHAN JUXIN MICRO ELECTRONICS CO LTD (CN)
International Classes:
H03F1/02; H02M3/156; H03F1/30
Foreign References:
| CN112543000A | 2021-03-23 | |||
| CN111836164A | 2020-10-27 | |||
| CN106535052A | 2017-03-22 | |||
| US20200350865A1 | 2020-11-05 |
Attorney, Agent or Firm:
ZY PARTNERS (CN)
Download PDF:
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