Title:
CONTROL SIGNAL GENERATION METHOD FOR SWITCH CONVERTER IN ENVELOPE TRACKING POWER SOURCE, AND STORAGE MEDIUM AND ELECTRONIC APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/159988
Kind Code:
A1
Abstract:
Provided in the embodiments of the present application are a control signal generation method for a switch converter in an envelope tracking power source, and a storage medium and an electronic apparatus. The method comprises: according to valley value point distribution of an envelope and time points corresponding to valley value points, sending a generated reference value into a PWM control signal generation module by means of a reference value generation module, so as to obtain a low-bandwidth control signal; according to a valley value point and a peak value point of the envelope that are adjacent, and time points corresponding to the valley value point and the peak value point that are adjacent, sending generated state information into a high-bandwidth control signal generation module by means of a state determination device, so as to obtain a high-bandwidth control voltage signal; and when an envelope signal is in a rising state, determining a slope K of a connecting line between the valley value point and the peak value point according to a key information string that includes a peak value, a valley value, and time points respectively corresponding to the peak value and the valley value, so as to obtain a gating signal of a filtering inductor, and then sending the gating signal to a corresponding filtering inductor gating switch for control.
Inventors:
ZHOU YAN (CN)
LIU GUODONG (CN)
XIE WENXUAN (CN)
FAN YAN (CN)
ZHANG ZHIHAO (CN)
LIU GUODONG (CN)
XIE WENXUAN (CN)
FAN YAN (CN)
ZHANG ZHIHAO (CN)
Application Number:
PCT/CN2022/127327
Publication Date:
August 31, 2023
Filing Date:
October 25, 2022
Export Citation:
Assignee:
UNIV NANJING POSTS & TELECOMMUNICATIONS (CN)
International Classes:
H02M1/088; H02M1/14; H02M3/158
Foreign References:
| CN114865894A | 2022-08-05 | |||
| CN103326549A | 2013-09-25 | |||
| CN108322047A | 2018-07-24 |
Other References:
冷阳 (LENG, YANG): "基于功率频谱分段方法的高效率包络线跟踪电源 (High Efficiency Envelope Tracking Power Supply Adopting Power Spectrum Allocation method)", 中国优秀硕士学位论文全文数据库 (信息科技辑) (INFORMATION SCIENCE & TECHNOLOGY, CHINA MASTER’S THESES FULL-TEXT DATABASE), no. 2, 15 February 2019 (2019-02-15), ISSN: 1674-0246
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
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