公开(公告)号：US20170250686A1

公开(公告)日：2017-08-31

申请号：US15595569

申请日：2017-05-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xujun Liu

IPC: H03K17/691 ,  H02M1/096

CPC classification number: H03K17/691 ,  H02M1/08 ,  H02M1/088 ,  H02M1/096 ,  H03K17/288 ,  Y10T307/944

Abstract: A method and an apparatus for driving a power switch tube. The apparatus includes an input unit, a drive unit, a transformer and a power switch tube. The input unit is connected to the drive unit, which is configured to input a group of drive signals, and the group of drive signals includes four drive signals, where the first drive signal and the second are complementary signals, and a dead time exists; the third drive signal and the fourth are complementary signals, and a dead time exists; the phase difference between the first drive signal and the third is 180 degrees, and the phase difference between the second drive signal and the fourth is 180 degrees; the drive unit is configured to power on a field winding of the transformer; and the transformer provides a drive voltage signal for the power switch tube.

公开(公告)号：US20160329817A1

公开(公告)日：2016-11-10

申请号：US15213745

申请日：2016-07-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xujun Liu ,  Liming Ye

IPC: H02M3/335 ,  H02M1/08

CPC classification number: H02M3/33507 ,  H02M1/08 ,  H02M3/335 ,  H02M2001/0025 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1491

Abstract: A power supply converter includes a power input circuit, which generates and outputs a first alternating current voltage; a transformer, which converts the first alternating current voltage into a second alternating current voltage; a power output circuit, which converts the second alternating current voltage into an output voltage, and outputs the output voltage; a resonant circuit and a correction circuit, which senses the first alternating current voltage to obtain a detection signal, and detects a value of a ringing signal in the detection signal, and sends a control signal to the power input circuit according to the value of the ringing signal, to adjust the frequency of the first alternating current voltage to be equal to the resonance frequency of the resonant circuit or be around the resonance frequency, so as to adjust the value of the ringing signal to reach a minimum value.

Abstract translation: 电源转换器包括产生并输出第一交流电压的电源输入电路; 变压器，其将第一交流电压转换成第二交流电压; 功率输出电路，其将所述第二交流电压转换为输出电压，并输出所述输出电压; 谐振电路和校正电路，其检测第一交流电压以获得检测信号，并检测检测信号中的振铃信号的值，并根据所述检测信号的值向控制信号发送控制信号 振铃信号，将第一交流电压的频率调整为等于谐振电路的谐振频率或谐振频率周围，以便将振铃信号的值调整到最小值。

公开(公告)号：US20140203666A1

公开(公告)日：2014-07-24

申请号：US14224295

申请日：2014-03-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xujun Liu

IPC: H03K17/691

CPC classification number: H03K17/691 ,  H02M1/08 ,  H02M1/088 ,  H02M1/096 ,  H03K17/288 ,  Y10T307/944

Abstract: A method and an apparatus for driving a power switch tube. The apparatus includes an input unit, a drive unit, a transformer and a power switch tube. The input unit is connected to the drive unit, which is configured to input a group of drive signals, and the group of drive signals includes four drive signals, where the first drive signal and the second are complementary signals, and a dead time exists; the third drive signal and the fourth are complementary signals, and a dead time exists; the phase difference between the first drive signal and the third is 180 degrees, and the phase difference between the second drive signal and the fourth is 180 degrees; the drive unit is configured to power on a field winding of the transformer; and the transformer provides a drive voltage signal for the power switch tube.

Abstract translation: 一种用于驱动电源开关管的方法和装置。 该装置包括输入单元，驱动单元，变压器和电源开关管。 输入单元连接到驱动单元，其被配置为输入一组驱动信号，并且该组驱动信号包括四个驱动信号，其中第一驱动信号和第二驱动信号是互补信号，并且存在死区时间; 第三驱动信号和第四驱动信号是互补信号，存在死区时间; 第一驱动信号和第三驱动信号之间的相位差为180度，第二驱动信号与第四驱动信号之间的相位差为180度; 驱动单元被配置为对变压器的励磁绕组通电; 并且变压器为电源开关管提供驱动电压信号。