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    Current Zero-Cross Detection Device, Signal Acquisition Circuit, and Circuit System
    1.
    发明申请
    Current Zero-Cross Detection Device, Signal Acquisition Circuit, and Circuit System 有权
    电流零交叉检测装置，信号采集电路和电路系统

    公开(公告)号：US20160134185A1

    公开(公告)日：2016-05-12

    申请号：US14896668

    申请日：2014-04-25

    Applicant: ZTE CORPORATION

    Inventor： Jing WANG ,  Junming ZHANG ,  Jie FAN ,  Jianping ZHOU

    IPC: H02M1/42 ,  G01R19/175

    CPC classification number: H02M1/42 ,  G01R19/175 ,  H02M1/4233 ,  H02M7/219 ,  H02M2001/0009 ,  Y02B70/126 ,  Y02P80/112

    Abstract: Disclosed are a current zero-cross detection device, zero-cross current signal acquisition circuit and totem pole bridgeless circuit system. The current zero-cross detection device includes a current transformer, first sampling switch, second sampling switch, sampling resister, comparator. The current transformer includes a primary winding and a secondary winding; the primary winding is connected to a circuit to be detected; two ends of the secondary winding are connected respectively to drain electrodes of the first and second sampling switches; source electrodes of first and second sampling switches are connected to ground; two ends of the sampling resistor are connected respectively to the drain electrode and source electrode of the second sampling switch; the negative input end of the comparator is connected to the drain electrode of the second sampling switch, its positive input end is connected to a reference voltage; the first and second sampling switches are in ON or OFF state.

    Abstract translation: 公开了目前的零交叉检测装置，零交叉电流信号采集电路和图腾柱无桥电路系统。 目前的零交叉检测装置包括电流互感器，第一采样开关，第二采样开关，采样电阻，比较器。 电流互感器包括初级绕组和次级绕组; 初级绕组连接到要检测的电路; 次级绕组的两端分别连接到第一和第二采样开关的漏电极; 第一和第二采样开关的源电极连接到地; 采样电阻的两端分别连接到第二采样开关的漏电极和源极; 比较器的负输入端连接到第二采样开关的漏电极，其正输入端连接到参考电压; 第一和第二采样开关处于ON或OFF状态。

    POWER CONVERSION APPARATUS AND METHOD FOR CONFIGURING THE SAME
    2.
    发明申请
    POWER CONVERSION APPARATUS AND METHOD FOR CONFIGURING THE SAME 审中-公开

    公开(公告)号：US20180183335A1

    公开(公告)日：2018-06-28

    申请号：US15739442

    申请日：2015-10-30

    Applicant: ZTE CORPORATION

    Inventor： Jie FAN ,  Jianping ZHOU ,  Guoxian LIN

    IPC: H02M3/158 ,  H02M7/219 ,  H02M1/42

    CPC classification number: H02M3/1584 ,  H02M1/4225 ,  H02M7/21 ,  H02M7/219 ,  Y02B70/126 ,  Y02P80/112

    Abstract: The present disclosure discloses a power conversion apparatus and a method for configuring the same. The power conversion apparatus includes a boost unit and at least two power conversion units; each of the power conversion units has two input ends; an input end of the boost unit is connected with one end of an alternating-current power supply, and an output end of the boost unit is connected with one input end of a first power conversion unit of the plurality of power conversion units; one input end of a last power conversion unit of the plurality of power conversion units is connected with the other end of the alternating-current power supply; and the input ends of the plurality of power conversion units are connected in series, and the output ends of the plurality of power conversion units are connected in parallel.

    Method and Device for Detecting Current of Inductor of PFC Circuit
    4.
    发明申请
    Method and Device for Detecting Current of Inductor of PFC Circuit 审中-公开
    用于检测PFC电路电感电流的方法和装置

    公开(公告)号：US20170045555A1

    公开(公告)日：2017-02-16

    申请号：US15305104

    申请日：2014-10-28

    Applicant: ZTE CORPORATION

    Inventor： Tao LIU ,  Jianping ZHOU ,  Guoxian Lin ,  Jie FAN ,  Yong LUO

    IPC: G01R19/25 ,  H02M1/42 ,  H02H7/12 ,  G01R15/18

    CPC classification number: G01R19/2506 ,  G01R15/183 ,  G01R19/0092 ,  H02H7/12 ,  H02M1/4208 ,  H02M1/4225 ,  H02M2001/0009 ,  Y02B70/126 ,  Y02P80/112

    Abstract: A method and device for detecting inductor current of a PFC circuit are disclosed, which relates to the field of power supply technology. The method includes: detecting a voltage on a boost inductor of a critical-conduction mode PFC circuit, and obtaining an inductor voltage detection signal (S1); converting the inductor voltage detection signal into a voltage signal whose waveform is consistent with a current waveform of the inductor to serve as an inductor current detection signal, to perform loop protection on the PFC circuit or perform over-current protection on the PFC circuit by using the inductor current detection signal (S2).

    Abstract translation: 公开了一种用于检测PFC电路的电感电流的方法和装置，其涉及电源技术领域。 该方法包括：检测临界导通模式PFC电路的升压电感上的电压，并获得电感电压检测信号（S1）; 将电感器电压检测信号转换成电压信号，其波形与电感器的电流波形一致，以用作电感器电流检测信号，以在PFC电路上执行环路保护或通过使用PFC电路执行过电流保护 电感电流检测信号（S2）。

    APPARATUS AND METHOD FOR DRIVING SYNCHRONOUS RECTIFIER
    5.
    发明申请
    APPARATUS AND METHOD FOR DRIVING SYNCHRONOUS RECTIFIER 有权
    用于驱动同步整流器的装置和方法

    公开(公告)号：US20160218634A1

    公开(公告)日：2016-07-28

    申请号：US14916086

    申请日：2014-05-07

    Applicant: ZTE CORPORATION

    Inventor： Fengfu DU ,  Jie FAN ,  Yaoguang GAO

    IPC: H02M3/335

    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.

    Abstract translation: 提供了用于驱动同步整流器的装置和方法，其涉及通信用电源领域。 该装置包括：检测电路，其中每个检测电路被配置为检测同步整流器之一的漏极和源极电压，以获得用于指示所述同步整流器中的一个同步整流器中的电流方向的检测信号; 隔离驱动电路，被配置为根据由检测电路输出的检测信号产生用于驱动同步整流器的隔离驱动信号; 和同步整流器，被配置为通过使用隔离的驱动信号来同步整流来自主变压器的输入信号。 本公开可以简单有效地获得同步整流器的隔离驱动信号，并且在穿透等异常情况下具有优异的保护特性。

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