INTEGRATING CIRCUIT AND INTEGRATING METHOD THEREOF - CHINA RESOURCES POWTECH SHANGHAI CO LTD

Title:

INTEGRATING CIRCUIT AND INTEGRATING METHOD THEREOF

Document Type and Number:

WIPO Patent Application WO/2020/119774

Kind Code:

A1

Abstract:

An integrating circuit (2) and an integrating method thereof. The integrating circuit comprises: an error amplifier (21) which amplifies and outputs a difference between a reference voltage and a feedback voltage; a first switch (S1) and a second switch (S2) sequentially connected to an output end of the error amplifier (21); a first capacitor (C1) connected between the output end of the error amplifier (21) and the ground; a second capacitor (C2) connected between an output end of the first switch (S1) and the ground; and a third capacitor (C3) connected between an output end of the second switch (S2) and the ground. Phases of switch signals of the first switch (S1) and the second switch (S2) are reversed. An error voltage is obtained by amplifying a difference between a reference voltage and a feedback voltage, a compensation voltage is generated by filtering an error voltage, and a feedback voltage is generated after the compensation voltage is processed by the control module (22), so that a feedback loop is formed, and loop integration is implemented, and a mean value of the feedback voltage equals a reference voltage value. The integrating circuit (2) is simple in structure and high in integration level, configuration of a large filter capacitor (C) is omitted, a peripheral circuit is simplified, system costs are reduced, and the problem of failure caused by eliminating a peripheral filter capacitor (C) is completely eliminated.

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Inventors:

ZHANG SHIBO (CN)
LU SHENGSHENG (CN)
LI LIANG (CN)

Application Number:

PCT/CN2019/125012

Publication Date:

June 18, 2020

Filing Date:

December 13, 2019

Export Citation:

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Assignee:

CHINA RESOURCES POWTECH SHANGHAI CO LTD (CN)

International Classes:

G05F1/56

Foreign References:

CN101388596A	2009-03-18
CN101388596A	2009-03-18
CN103904869A	2014-07-02
CN102279609A	2011-12-14
CN104375555A	2015-02-25
CN104460803A	2015-03-25
CN105573396A	2016-05-11
CN107968583A	2018-04-27
US20090230942A1	2009-09-17

Attorney, Agent or Firm:

J.Z.M.C. PATENT AND TRADEMARK LAW OFFICE (GENERAL PARTNERSHIP) (CN)

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