公开(公告)号：US20130329465A1

公开(公告)日：2013-12-12

申请号：US13914099

申请日：2013-06-10

Applicant: BYD COMPANY LIMITED ,  SHENZHEN BYD AUTO R&D COMPANY LIMITED

Inventor： Yongjun Hou ,  Xiaohua Yang

IPC: H02M1/14 ,  H02M3/335

CPC classification number: H02M1/14 ,  H02M1/4258 ,  H02M3/33507 ,  H02M2001/0058 ,  Y02B70/126 ,  Y02B70/1433 ,  Y02B70/1491

Abstract: A quasi-resonant device for a switching power, a quasi-resonant system for a switching power, and a method for a quasi-resonant control of a switching power are provided. The quasi-resonant device includes: a degaussing time sampling module, configured to sample a degaussing time Tds of a secondary coil of the transformer according to a feedback signal output by the switching power after the switching tube is turned off; a valley sampling module, configured to sample a resonant valley signal of the quasi-resonant module according to the feedback signal; a time producing module, configured to produce a time T with a predetermined ratio D by processing the degaussing time Tds; and a logic processing module, configured to obtain a first valley signal after the time T, and the first valley signal works as a switching signal T′ to turn on the switching tube.

Abstract translation: 提供了一种用于开关电源的准谐振装置，用于开关电源的准谐振系统，以及用于开关电源的准谐振控制的方法。 准谐振装置包括：消磁时间采样模块，被配置为根据在开关管断开之后由开关电源输出的反馈信号对变压器的次级线圈的消磁时间Tds进行采样; 谷值采样模块，被配置为根据反馈信号对准谐振模块的谐振谷值信号进行采样; 时间生成模块，被配置为通过处理消磁时间Tds来产生具有预定比率D的时间T; 以及逻辑处理模块，被配置为在时间T之后获得第一谷值信号，并且所述第一谷值信号作为切换信号T'来导通开关管。

公开(公告)号：US09112407B2

公开(公告)日：2015-08-18

申请号：US13914099

申请日：2013-06-10

Applicant: SHENZHEN BYD AUTO R&D COMPANY LIMITED ,  BYD COMPANY LIMITED

Inventor： Yongjun Hou ,  Xiaohua Yang

IPC: H02M1/14 ,  H02M3/335 ,  H02M1/42 ,  H02M1/00

CPC classification number: H02M1/14 ,  H02M1/4258 ,  H02M3/33507 ,  H02M2001/0058 ,  Y02B70/126 ,  Y02B70/1433 ,  Y02B70/1491

Abstract: A quasi-resonant device for a switching power, a quasi-resonant system for a switching power, and a method for a quasi-resonant control of a switching power are provided. The quasi-resonant device includes: a degaussing time sampling module, configured to sample a degaussing time Tds of a secondary coil of the transformer according to a feedback signal output by the switching power after the switching tube is turned off; a valley sampling module, configured to sample a resonant valley signal of the quasi-resonant module according to the feedback signal; a time producing module, configured to produce a time T with a predetermined ratio D by processing the degaussing time Tds; and a logic processing module, configured to obtain a first valley signal after the time T, and the first valley signal works as a switching signal T′ to turn on the switching tube.

Abstract translation: 提供了一种用于开关电源的准谐振装置，用于开关电源的准谐振系统，以及用于开关电源的准谐振控制的方法。 准谐振装置包括：消磁时间采样模块，被配置为根据在开关管断开之后由开关电源输出的反馈信号对变压器的次级线圈的消磁时间Tds进行采样; 谷值采样模块，被配置为根据反馈信号对准谐振模块的谐振谷值信号进行采样; 时间生成模块，被配置为通过处理消磁时间Tds来产生具有预定比率D的时间T; 以及逻辑处理模块，被配置为在时间T之后获得第一谷值信号，并且所述第一谷值信号作为切换信号T'来导通开关管。

公开(公告)号：US20160322911A1

公开(公告)日：2016-11-03

申请号：US15105189

申请日：2014-12-19

Applicant: BYD COMPANY LIMITED

Inventor： Yongjun Hou ,  Wenhui Ye ,  Haiquan Zhang

IPC: H02M3/335 ,  H02M1/08

CPC classification number: H02M3/33523 ,  H02M1/08 ,  H02M3/335 ,  H02M2001/0032 ,  Y02B70/16

Abstract: An integrated circuit controls a switch power supply including: a primary feedback terminal, a primary feedback sampling module, an error amplifying module, a first control module, a secondary control module, a secondary feedback terminal, a second control module, and a driving module; the second control module, connected with the first control module and the secondary control module, respectively, and configured to generate a logic control signal according to the constant voltage control signal, or according to the secondary control signal and the constant voltage control signal; and the driving module, connected with the second control module and configured to generate a driving signal according to the logic control signal and to output the driving signal.

Abstract translation: 集成电路控制开关电源，包括：初级反馈端子，主反馈采样模块，误差放大模块，第一控制模块，次级控制模块，次级反馈端子，第二控制模块和驱动模块 ; 所述第二控制模块分别与所述第一控制模块和所述辅助控制模块相连，并且被配置为根据所述恒定电压控制信号或者根据所述次级控制信号和所述恒定电压控制信号产生逻辑控制信号; 以及所述驱动模块，与所述第二控制模块连接并且被配置为根据所述逻辑控制信号产生驱动信号并输出​​所述驱动信号。

公开(公告)号：US10389225B2

公开(公告)日：2019-08-20

申请号：US15756330

申请日：2016-09-05

Applicant: BYD COMPANY LIMITED

Inventor： Wenqing Wang ,  Yongjun Hou

IPC: H02M3/335 ,  H02M1/14 ,  H02M1/08 ,  H02M1/42 ,  H02M3/156 ,  H02M1/00

Abstract: The invention discloses a switching power supply, a primary control chip and a loop compensation device thereof. The loop compensation device comprises: an error amplifier; a switching logic gate, wherein the input end of the switching logic gate is connected with the output end of the error amplifier; a loop compensation capacitor, wherein one end of the loop compensation capacitor is connected with the output end of the switching logic gate, and the other end of the loop compensation capacitor is grounded; and a delay generation circuit, wherein the output end of the delay generation circuit is connected with the control end of the switching logic gate, and the delay generation circuit is used for outputting a valid switching control signal within a preset time after a power switch of the switching power supply is turned off to control the switching logic gate in a turn-on state, so that the loop compensation capacitor is charged/discharged by means of an error amplification signal outputted from the error amplifier. With the loop compensation device, the problem that the output ripple from the switching power supply is too large can be solved, and the loop stability is ensured.

公开(公告)号：US10367348B2

公开(公告)日：2019-07-30

申请号：US15769316

申请日：2016-11-24

Applicant: BYD COMPANY LIMITED

Inventor： Yongjun Hou ,  Wenqing Wang

IPC: H02M1/32 ,  H02H7/122 ,  H02H7/12 ,  H02M3/335 ,  H02M3/156 ,  H02M7/217 ,  G01R31/02

Abstract: The present disclosure provides a control apparatus of a switch-mode power supply and a switch-mode power supply. In the control apparatus of the present disclosure, a short-circuit protection module is set, and when a switching transistor of the switch-mode power supply is turned on, and the short-circuit protection module detects that a voltage across a current sensing resistor of the switch-mode power supply is less than a predetermined value within a predetermined period, that is, the current sensing resistor is short-circuited, the short-circuit protection module generates a short-circuit protection signal, and a driving controller controls the switching transistor to turn off according to the protection signal, thereby switching off the control apparatus, preventing breakdown of the switch-mode power supply, and avoiding erroneous protection.

公开(公告)号：US09716438B2

公开(公告)日：2017-07-25

申请号：US15105189

申请日：2014-12-19

Applicant: BYD Company Limited

Inventor： Yongjun Hou ,  Wenhui Ye ,  Haiquan Zhang

IPC: H02M3/335 ,  H02M1/08 ,  H02M1/00

CPC classification number: H02M3/33523 ,  H02M1/08 ,  H02M3/335 ,  H02M2001/0032 ,  Y02B70/16

Abstract: An integrated circuit controls a switch power supply including: a primary feedback terminal, a primary feedback sampling module, an error amplifying module, a first control module, a secondary control module, a secondary feedback terminal, a second control module, and a driving module; the second control module, connected with the first control module and the secondary control module, respectively, and configured to generate a logic control signal according to the constant voltage control signal, or according to the secondary control signal and the constant voltage control signal; and the driving module, connected with the second control module and configured to generate a driving signal according to the logic control signal and to output the driving signal.