Bridge type converter single-path signal gate driving circuit using isolation transformer

The invention relates to a bridge type converter single-path signal gate driving circuit using an isolation transformer. Besides adopting a single-chip microcomputer module, a complementary driving circuit, an input isolation circuit, a transformer, a voltage boosting circuit and a bridge type converter switch tube circuit, the bridge type converter single-path signal gate driving circuit of the invention further comprises a gate capacitance discharge loop composed of a linear optocoupler OPTO, a direct-current voltage source DC2, an NPN triode Q3 and resistors R2, R3 and R4; the gate capacitance discharge is controlled through utilizing optocoupler control signals outputted by the single-chip microcomputer module; the output end of the gate capacitance discharge loop is connected in parallel with the output end of the voltage boosting circuit; when the gate driving of a bridge type converter switch tube stops working, the driving voltage of the bridge type converter switch tube is in a low electric level state, the voltage boosting circuit is short circuited, and therefore, short circuiting controllability and digital-analog isolation of the gate driving can be realized, and therefore, when the isolated gate driving terminates working, gate source voltage can be quickly reduced to zero, and thus, the shoot-through of the drain and source of the bridge type converter switch tube can be avoided.