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1.发明申请High-voltage protection circuit, high-voltage protection method and power supply 有权高压保护电路，高压保护方式及电源公开(公告)号：US20150146459A1
公开(公告)日：2015-05-28
申请号：US14412761
申请日：2013-07-29
Applicant: ZTE Corporation
Inventor： Fengfu Du , Binchuan Dai , Jiang Wang
Abstract: Disclosed are a high-voltage protection circuit, a high-voltage protection method and a power supply. The high voltage protection circuit comprises a main relay, an auxiliary relay, a first resistor, a second resistor, a first capacitor and a second capacitor, wherein one end of the main relay is connected to the input port of a live line, and the other end thereof is connected to the output port of the live line; one end of the auxiliary relay is connected to the input port of the live line, and the other end thereof is connected between the first resistor and the second resistor; one end of the first capacitor is connected to the output port of the live line, and the other end thereof is connected to a neutral line parallel to the live line; the second capacitor is connected to both ends of the main relay in parallel; and the second resistor and the first resistor are connected between the input port and the output port of the live line in series in sequence. The present invention can effectively solve the problem that quick recovery cannot be achieved in an energy-saving mode, so that the system achieves high efficiency and energy saving, and can ensure high-voltage protection in an energy-saving mode through the bridge connection of the second capacitor to both ends of the main relay, and the adjustment of the capacitance values of the first capacitor and the second capacitor.
Abstract translation: 公开了一种高压保护电路，高压保护方法和电源。 高压保护电路包括主继电器，辅助继电器，第一电阻器，第二电阻器，第一电容器和第二电容器，其中主继电器的一端连接到带电线的输入端口，并且 其另一端连接到生命线的输出端口; 辅助继电器的一端连接到带电线的输入端口，另一端连接在第一电阻器和第二电阻器之间; 第一电容器的一端连接到带电线的输出端口，另一端连接到与生命线平行的中线; 第二电容器并联连接到主继电器的两端; 并且第二电阻器和第一电阻器依次串联连接在实时线的输入端口和输出端口之间。 本发明能够有效地解决在节能模式下无法实现快速恢复的问题，从而能够实现高效率和节能，并且能够通过桥接连接保证节电模式下的高压保护 主继电器两端的第二电容器和第一电容器和第二电容器的电容值的调整。
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公开(公告)号：US09991807B2
公开(公告)日：2018-06-05
申请号：US14916086
申请日：2014-05-07
Applicant: ZTE CORPORATION
Inventor： Fengfu Du , Jie Fan , Yaoguang Gao
CPC classification number: H02M3/33546 , H02M3/33592 , H02M7/217 , Y02B70/1475
Abstract: Provided is apparatus and a method for driving synchronous rectifiers, which relate to the field of power supplies for communications. The apparatus includes: detection circuits, wherein each of the detection circuits is configured to detect drain and source voltages of one of synchronous rectifiers to obtain a detection signal for indicating a current direction in the one of the synchronous rectifiers; an isolated driving circuit, configured to generate isolated driving signals for driving the synchronous rectifiers according to the detection signals output by the detection circuits; and the synchronous rectifiers, configured to synchronously rectify input signals from a main transformer by using the isolated driving signals. The present disclosure can obtain the isolated driving signals of the synchronous rectifiers simply and effectively, and has a superior protective feature in case of shoot-through and other abnormalities.
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3.发明授权公开(公告)号：US10044284B2
公开(公告)日：2018-08-07
申请号：US15578255
申请日：2015-10-26
Applicant: ZTE CORPORATION
Inventor： Qia Wang , Jie Fan , Hongjin Liu , Guoxian Lin , Fengfu Du , Xiufeng Dong , Jianping Zhou
Abstract: A synchronous rectifier driving method, a synchronous rectifier circuit and a switching power supply are provided, and the method includes: detecting an output current in a secondary winding of a transformer unit, and generating a first driving signal according to the output current; obtaining a protection signal according to a voltage signal of the secondary winding of the transformer unit in a synchronous rectifier circuit; correcting the first driving signal by using the obtained protection signal to obtain a second driving signal; and driving a rectifier in the synchronous rectifier circuit according to the second driving signal.
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公开(公告)号：US09343951B2
公开(公告)日：2016-05-17
申请号：US14412761
申请日：2013-07-29
Applicant: ZTE Corporation
Inventor： Fengfu Du , Binchuan Dai , Jiang Wang
Abstract: Disclosed are a high-voltage protection circuit, a high-voltage protection method and a power supply. The high voltage protection circuit comprises a main relay, an auxiliary relay, a first resistor, a second resistor, a first capacitor and a second capacitor, wherein one end of the main relay is connected to the input port of a live line, and the other end thereof is connected to the output port of the live line; one end of the auxiliary relay is connected to the input port of the live line, and the other end thereof is connected between the first resistor and the second resistor; one end of the first capacitor is connected to the output port of the live line, and the other end thereof is connected to a neutral line parallel to the live line; the second capacitor is connected to both ends of the main relay in parallel; and the second resistor and the first resistor are connected between the input port and the output port of the live line in series in sequence. The present invention can effectively solve the problem that quick recovery cannot be achieved in an energy-saving mode, so that the system achieves high efficiency and energy saving, and can ensure high-voltage protection in an energy-saving mode through the bridge connection of the second capacitor to both ends of the main relay, and the adjustment of the capacitance values of the first capacitor and the second capacitor.
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