Title:
CONSUMPTION POWER IMPROVEMENT-TYPE AMPLIFIER CIRCUIT FOR DETECTING OUTPUT SIGNAL AND ACTIVELY ADJUSTING SMPS BIAS VOLTAGE
Document Type and Number:
WIPO Patent Application WO/2023/068766
Kind Code:
A1
Abstract:
The present invention is to provide a consumption power improvement-type amplifier circuit for detecting an output signal and actively adjusting an SMPS bias voltage in order to optimally reduce consumption power, the circuit comprising: an amplifier unit (100) which outputs a signal amplified by a power amplification unit (110) to a speaker (SP), and further includes a peak voltage detection unit (120) for detecting a peak voltage output from an output terminal; and an SMPS unit (200) which charges and maintains a peak voltage value detected by the peak voltage detection unit (120) at a maximum peak value, and outputs an output value after adjusting the output value in such a manner of increasing a bias value when an amplifier output determined through comparison with a reference voltage is higher than the reference voltage, and decreasing the bias value when the amplifier output is lower than the reference voltage.
Inventors:
LEE SANGHYEOK (KR)
Application Number:
PCT/KR2022/015874
Publication Date:
April 27, 2023
Filing Date:
October 18, 2022
Export Citation:
Assignee:
DESCO CO LTD (KR)
International Classes:
H03F1/02; H02M3/26; H02M7/06; H02M7/53; H03F3/217
Foreign References:
| KR20090118458A | 2009-11-18 | |||
| KR20120072646A | 2012-07-04 | |||
| KR101086064B1 | 2011-11-22 | |||
| JP2018129848A | 2018-08-16 | |||
| KR102371669B1 | 2022-03-08 |
Other References:
SWAGATAM: "SMPS 2 x 50V 350W Circuit for Audio Power Amplifiers", HOMEMADE CIRCUIT PROJECTS, 16 December 2019 (2019-12-16), pages 1 - 11, XP093058464, Retrieved from the Internet
Attorney, Agent or Firm:
INTERBRAIN PATENT & LAW FIRM (KR)
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