公开(公告)号：US09287863B2

公开(公告)日：2016-03-15

申请号：US13790737

申请日：2013-03-08

Applicant: DELTA ELECTRONICS, INC.

Inventor： Ming Wang ,  Wei-Liang Fu ,  Qing Cong ,  Jian-Ping Ying ,  Bing Zhang

IPC: H03B1/00 ,  H03K3/00 ,  H03K17/16

CPC classification number: H03K17/16 ,  H03K17/162 ,  H03K17/691

Abstract: A switch driving circuit for driving a full-controlled power switch is disclosed, including a pulse-width modulation unit, a pulse transformer, an anti-interference module, a pulse-width demodulation unit and a driving-power amplifier. The pulse-width modulation unit converts a driving input signal into a positive-negative narrow pulse-width signal. The anti-interference module is coupled to the secondary side and the positive-negative narrow pulse-width signal includes multiple positive pulses and negative pulses. The anti-interference module filters out the ones from the positive pulses and negative pulses of which the pulse amplitude does not reach an effective threshold, and meanwhile the anti-interference module suppress a common-mode noise caused by a high voltage transient variation at a moment when the full-controlled power switch is turned on or off. The pulse-width demodulation unit converts the filtered positive-negative narrow pulse-width signal into a driving output signal.

Abstract translation: 公开了一种用于驱动全控制电源开关的开关驱动电路，包括脉宽调制单元，脉冲变压器，抗干扰模块，脉冲宽度解调单元和驱动功率放大器。 脉冲宽度调制单元将驱动输入信号转换为正负窄脉冲宽度信号。 抗干扰模块耦合到次级侧，正 - 负窄脉冲宽度信号包括多个正脉冲和负脉冲。 抗干扰模块从正脉冲和脉冲幅度未达到有效阈值的负脉冲滤除滤波器，同时抗干扰模块抑制由高电压瞬态变化引起的共模噪声 当全控制电源开关打开或关闭时的时刻。 脉冲宽度解调部将滤波后的正负窄脉冲宽度信号变换为驱动输出信号。