Title:
SWITCH CONVERTER AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/036392
Kind Code:
A1
Abstract:
Disclosed are a switch converter and a control method therefor, the switch converter comprising an input positive power supply, an output positive voltage, a power supply common ground, a switching transistor Q1, a switching transistor Q2, a switching transistor Q3, a diode D1, an inductor L1 and a capacitor C1. A drain of the switching transistor Q1 is connected to the input positive power supply; a source of the switching transistor Q1 and a drain of the switching transistor Q2 are connected to one end of the inductor L1; a source of the switching transistor Q3 and a cathode of the diode D1 are connected to the other end of the inductor L1; a drain of the switching transistor Q3 is connected to one end of the capacitor C1; and a source of the switching transistor Q2, an anode of the diode D1 and the other end of the capacitor C1 are connected to the power supply common ground. The present invention solves the problem of a step-down circuit having a low comprehensive efficiency bias when working under a wide range of input voltages and loads, and simultaneously eliminates oscillation so as to improve EMI.
Inventors:
LU PENGFEI (CN)
Application Number:
PCT/CN2020/094483
Publication Date:
March 04, 2021
Filing Date:
June 05, 2020
Export Citation:
Assignee:
MORNSUN GUANGZHOU SCI & TECH (CN)
International Classes:
H02M3/158
Foreign References:
| CN110504835A | 2019-11-26 | |||
| CN110011537A | 2019-07-12 | |||
| CN102820781A | 2012-12-12 | |||
| US20080137379A1 | 2008-06-12 |
Attorney, Agent or Firm:
GUANGZHOU ZHIYOU PATENT & TRADEMARK AGENCY CO., LTD. (CN)
Download PDF:
Previous Patent: METHOD FOR REMOVING HUMATE AND OXALATE IMPURITIES IN BAYER LIQUOR
Next Patent: 4K HIGH RESOLUTION PANORAMIC ANNULAR OPTICAL SYSTEM
Next Patent: 4K HIGH RESOLUTION PANORAMIC ANNULAR OPTICAL SYSTEM