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1. CN103166450 - Voltage transmission loss compensation circuit, compensation method, control chip and switching power supply

Office
China
Application Number 201310131758.4
Application Date 15.04.2013
Publication Number 103166450
Publication Date 19.06.2013
Grant Number 103166450
Grant Date 26.08.2015
Publication Kind B
IPC
H02M 1/42
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
42Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
CPC
H02M 3/33523
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
22with intermediate conversion into ac
24by static converters
28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325using devices of a triode or a transistor type requiring continuous application of a control signal
335using semiconductor devices only
33507with automatic control of the output voltage or current
33523with galvanic isolation between input and output
H02M 1/0025
H02M 1/08
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
08Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H02M 3/335
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
22with intermediate conversion into ac
24by static converters
28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325using devices of a triode or a transistor type requiring continuous application of a control signal
335using semiconductor devices only
H02M 3/33507
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
22with intermediate conversion into ac
24by static converters
28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325using devices of a triode or a transistor type requiring continuous application of a control signal
335using semiconductor devices only
33507with automatic control of the output voltage or current
H02M 3/33515
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
22with intermediate conversion into ac
24by static converters
28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325using devices of a triode or a transistor type requiring continuous application of a control signal
335using semiconductor devices only
33507with automatic control of the output voltage or current
33515with digital control
Applicants 矽力杰半导体技术(杭州)有限公司
Inventors 徐孝如
韩云龙
Agents 北京集佳知识产权代理有限公司 11227
Title
(EN) Voltage transmission loss compensation circuit, compensation method, control chip and switching power supply
(ZH) 电压传输损耗补偿电路、补偿方法、控制芯片及开关电源
Abstract
(EN)
The invention provides a voltage transmission loss compensation circuit, a voltage transmission loss compensation method, a control chip and a switching power supply. A first sampling signal for characterizing an output current is acquired by acquiring the output current information of the switching power supply, the first sampling signal is delayed and converted to acquire a compensation signal, and a control circuit adjusts an output voltage according to the compensation signal to compensate the voltage loss in the process of transmitting the output voltage of the switching power supply to a load, so that the voltage of the load is consistent with the expected voltage. The circuit is high in stability, large resistors and large capacitors are not required, circuit integration is facilitated, and the problems of high circuit loss and high cost are solved.

(ZH)

本发明提供了一种电压传输损耗补偿电路、补偿方法、控制芯片及开关电源,通过采样开关电源的输出电流信息以获得一表征所述输出电流的第一采样信号,所述第一采样信号经延时和转换处理后获得一补偿信号,控制电路根据所述补偿信号来调节输出电压,以补偿所述开关电源的输出电压传输至负载过程中的电压损耗,保证负载端的电压与预期电压一致。本发明的电路稳定性好,且无需大电阻和大电容,利于电路集成,同时避免了电路损耗大、成本高的问题。

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