The invention relates to a switch tube control pulse driving method which comprises the following steps: an object
pulse control signal is divided into two control signals that are the same in pulse width via a
digital control chip, the two control signals are respectively connected to anti-phase totem poles after being output via the
digital control chip, then the two control signals are respectively connected to two ends of a primary side winding of a
pulse transformer via the anti-phase totem poles, a group of homonymous terminals at a
secondary side of the
pulse transformer are connected to form a place for driving output, the other group of homonymous terminals are respectively connected to anodes of two diodes, the signals are connected to a
voltage divider
resistor after two cathodes are connected with each other, then the signals are subjected to
voltage dividing operation, the signals are connected to an input end of a driving
chip, and an output end of the driving chip is connected with a gate pole current-limiting
resistor of a switch tube in a power circuit. According to the switch tube control pulse driving method, a defect that a conventional electromagnetic isolation driving method and a conventional optoelectronic isolation driving method result in difficulty in designing a
high frequency and
high power density converter can be overcome. The switch tube control pulse driving method is high in responding speed, high in
dielectric strength of the primary side and the
secondary side, and strong in
common mode interference suppressing capability; duty ratio constraints caused by a fact that the primary side of the
pulse transformer needs magnetic
recovery can be removed.