专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09083246B2 Control circuit for primary side control of switching power supply 有权
标题翻译：开关电源初级侧控制控制电路
公开(公告)号：US09083246B2
公开(公告)日：2015-07-14
申请号：US13090680
申请日：2011-04-20
申请人： Qiang Zong , Huizhen Zhu , Pingan Zhao , Yajiang Zhu
发明人： Qiang Zong , Huizhen Zhu , Pingan Zhao , Yajiang Zhu
IPC分类号： H02M3/335
CPC分类号： H02M3/33507
摘要： A switched mode power supply (SMPS) includes a transformer with a primary winding, a secondary winding, an auxiliary winding, and a power switch coupled to the primary winding. During one switching cycle, the auxiliary winding provides a feedback signal which includes a first voltage pulse that is induced after the power switch is turned on and a second voltage pulse that is induced after the power switch is turned off. A control circuit includes a circuit for generating a sampling signal for sampling the second voltage pulse in a switching cycle at a time that is determined based on the first voltage pulse in the same switching cycle. A sample-and-hold circuit is configured for sampling and storing the second voltage pulse in response to the sampling signal. A switching signal generating circuit is configured to generate a switching signal for controlling the power switch based on an output of the sample-and-hold circuit.
摘要翻译：开关模式电源（SMPS）包括具有初级绕组的变压器，次级绕组，辅助绕组和耦合到初级绕组的功率开关。在一个开关周期期间，辅助绕组提供反馈信号，该反馈信号包括在电源开关导通之后感应的第一电压脉冲和在电源开关断开之后引起的第二电压脉冲。控制电路包括用于产生采样信号的电路，所述采样信号用于在基于相同切换周期中的第一电压脉冲确定的时间的开关周期中对第二电压脉冲进行采样。采样保持电路被配置为响应于采样信号对第二电压脉冲进行采样和存储。开关信号发生电路被配置为基于采样保持电路的输出产生用于控制功率开关的开关信号。

2. 发明申请

US20110261596A1 CONTROL CIRCUIT FOR PRIMARY SIDE CONTROL OF SWITCHING POWER SUPPLY 有权
标题翻译：用于开关电源初级控制的控制电路
公开(公告)号：US20110261596A1
公开(公告)日：2011-10-27
申请号：US13090680
申请日：2011-04-20
申请人： Qiang Zong , Huizhen Zhu , Pingan Zhao , Yajiang Zhu
发明人： Qiang Zong , Huizhen Zhu , Pingan Zhao , Yajiang Zhu
IPC分类号： H02M3/335
CPC分类号： H02M3/33507
摘要： A switched mode power supply (SMPS) includes a transformer with a primary winding, a secondary winding, an auxiliary winding, and a power switch coupled to the primary winding. During one switching cycle, the auxiliary winding provides a feedback signal which includes a first voltage pulse that is induced after the power switch is turned on and a second voltage pulse that is induced after the power switch is turned off. A control circuit includes a circuit for generating a sampling signal for sampling the second voltage pulse in a switching cycle at a time that is determined based on the first voltage pulse in the same switching cycle. A sample-and-hold circuit is configured for sampling and storing the second voltage pulse in response to the sampling signal. A switching signal generating circuit is configured to generate a switching signal for controlling the power switch based on an output of the sample-and-hold circuit.
摘要翻译：开关模式电源（SMPS）包括具有初级绕组的变压器，次级绕组，辅助绕组和耦合到初级绕组的功率开关。在一个开关周期期间，辅助绕组提供反馈信号，该反馈信号包括在电源开关导通之后感应的第一电压脉冲和在电源开关断开之后引起的第二电压脉冲。控制电路包括用于产生采样信号的电路，所述采样信号用于在基于相同切换周期中的第一电压脉冲确定的时间的开关周期中对第二电压脉冲进行采样。采样保持电路被配置为响应于采样信号对第二电压脉冲进行采样和存储。开关信号发生电路被配置为基于采样保持电路的输出产生用于控制功率开关的开关信号。

3. 发明授权

US09318962B2 Circuits and methods for reducing output voltage overshoot of switch mode power supply 有权
标题翻译：降低开关电源输出电压过冲的电路和方法
公开(公告)号：US09318962B2
公开(公告)日：2016-04-19
申请号：US13708922
申请日：2012-12-07
申请人： Chao Gao , Pingan Zhao , Chao Chen
发明人： Chao Gao , Pingan Zhao , Chao Chen
IPC分类号： G05F3/16 , H02M3/335
CPC分类号： H02M3/33523 , H02M3/33507
摘要： A switching mode power supply (SMPS) includes a transformer having a primary winding for coupling to an input power source, a secondary winding for providing an output voltage of the SMPS, and an auxiliary winding. The SMPS also has a power transistor coupled to the primary winding and a primary side control circuit coupled to the auxiliary winding and the power transistor. The primary side control circuit is configured to regulate the output of the SMPS by controlling the power switch in response to a feedback voltage signal that is representative of an output of the SMPS. The SMPs also has a secondary-side control circuit coupled to the secondary winding and being configured to cause the output voltage of the SMPS to discharge when the output voltage of the SMPS is higher than a first reference voltage.
摘要翻译：开关电源（SMPS）包括具有用于耦合到输入电源的初级绕组的变压器，用于提供SMPS的输出电压的次级绕组和辅助绕组。 SMPS还具有耦合到初级绕组的功率晶体管和耦合到辅助绕组和功率晶体管的初级侧控制电路。初级侧控制电路被配置为通过响应于代表SMPS的输出的反馈电压信号来控制功率开关来调节SMPS的输出。 SMP还具有耦合到次级绕组的次级侧控制电路，并且被配置为当SMPS的输出电压高于第一参考电压时使SMPS的输出电压放电。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式