Title:
DYNAMIC QUICK RESPONSE METHOD AND CIRCUIT OF SWITCHING POWER SUPPLY
Document Type and Number:
WIPO Patent Application WO/2016/019788
Kind Code:
A1
Abstract:
A dynamic quick response method of a switching power supply. The method comprises the following steps: a drop quick response step, i.e., when it is detected that the voltage at an FB end suddenly increases rapidly, sending a drop dynamic response signal, rapidly providing current to the FB end, and stopping providing the current to the FB end after the voltage at the FB end rises to a first preset value; an overshoot quick response step, i.e., when it is detected that the voltage at the FB end suddenly decreases rapidly, sending an overshoot dynamic response signal, rapidly extracting the current at the FB end, and stopping extracting the current at the FB end after the voltage at the FB end drops to a second preset value; and a steady state judgment step, i.e., judging whether a voltage loop of the switching power supply enters a steady state, if the voltage loop enters the steady state, allowing the output of the drop dynamic response signal or the overshoot dynamic response signal, and if the voltage loop does not enter the steady state, not allowing the output of the drop dynamic response signal or the overshoot dynamic response signal. The method can increase the dynamic response speed of the switching power supply.
Inventors:
TANG SHENGBIN (CN)
Application Number:
PCT/CN2015/084179
Publication Date:
February 11, 2016
Filing Date:
July 16, 2015
Export Citation:
Assignee:
MORNSUN GUANGZHOU SCI & TECH (CN)
International Classes:
H02M3/335
Foreign References:
| CN104167923A | 2014-11-26 | |||
| CN101546958A | 2009-09-30 | |||
| CN103427655A | 2013-12-04 |
Attorney, Agent or Firm:
GUANGZHOU ZHIYOU PATENT & TRADEMARK AGENCY CO., LTD. (CN)
广州知友专利商标代理有限公司 (CN)
广州知友专利商标代理有限公司 (CN)
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