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Patent Searching and Data


Title:
SLOPE COMPENSATION CIRCUIT AND METHOD
Document Type and Number:
WIPO Patent Application WO/2017/054479
Kind Code:
A1
Abstract:
A slope compensation circuit and method, which are used for performing slope compensation on a main power circuit. The circuit comprises: a main power circuit change detection module (61), configured to detect a voltage of any one or more of the following windings in a main power circuit to obtain a trigger signal which is consistent with the detected voltage change: a main transformer winding, an auxiliary winding of the main transformer winding, an inductive winding and an inductive auxiliary winding; a main power circuit current detection module (62), configured to detect a current in the main power circuit to obtain a current signal; and a slope compensation processing module (63), configured to generate, in a corresponding time period, a slope compensation signal according to the trigger signal and control the duty ratio of the main power circuit according to the current signal and the slope compensation signal. The circuit can solve the problem, caused by a slope compensation generation method, that maximum value information about a main power topology actual current sampling signal is unable to be fed back to a loop circuit.

Inventors:
OUYANG YANHONG (CN)
ZHANG JINTAO (CN)
Application Number:
PCT/CN2016/083672
Publication Date:
April 06, 2017
Filing Date:
May 27, 2016
Export Citation:
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Assignee:
ZTE CORP (CN)
International Classes:
H02M1/00
Foreign References:
CN104506072A2015-04-08
CN1271473A2000-10-25
JP2011091888A2011-05-06
CN104065261A2014-09-24
Attorney, Agent or Firm:
AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (CN)
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