System for generating phase shift driving signal

The invention discloses a four-path driving circuit which comprises control voltage input, sawtooth wave reference and four paths of driving output. Voltage input is firstly compared with a reference signal through a comparator, and a pulse width modulation (PWM) signal with the width representing the voltage difference value is generated. The signal is processed by a T trigger, a phase inverter, a delayer, waveform shaping and the like to finally form four paths of phase-shifted full-bridge driving signals. The system has the advantages that complementary driving signals with adjustable dead time can be simply and reliably generated, four paths of complementary phase-shift driving signals with the same dead time and controllable phase difference can be further generated, and the phase-shift full-bridge driving circuit can better adapt to driving control of a phase-shift full bridge. 本发明公开了一种包含控制电压输入、锯齿波参考和4路驱动输出。电压输入首先经过比较器和参考信号比较，产生用宽度代表电压差值的脉冲宽度调制(PWM)信号。此信号经过T触发器、反相器、延时器、波形整形等处理后最终形成4路移相全桥驱动信号。本发明的优点在于：可以