The driving circuit of the full bridge is the trigger signal that causes the power tube to generate AC, not the AC signal to change the DC signal.
Even if the single chip microcomputer can output DC signal, but its driving ability is limited, so the single chip microcomputer generally do drive signal, drive large power tube, to generate large current in order to drive the motor.
Half bridge drive circuit and half bridge rectifier circuit can be called half bridge circuit. Half-bridge drive refers to the circuit with alternating output of the upper and lower components. Half-bridge rectification refers to only half wave rectification. A half-bridge circuit is an oscillation composed of two triode or MOS tubes, and a full-bridge circuit is an oscillation composed of four triode or MOS tubes. The full-bridge circuit is not easy to produce leakage, and the half-bridge circuit is easy to drain current between the oscillation conversion, so that the waveform is bad, resulting in interference.
The cost of half-bridge circuit is low, the circuit is easy to form, the cost of full-bridge circuit is high, and the circuit is relatively complex. A half-bridge circuit is an oscillation composed of two triode or MOS tubes, and a full-bridge circuit is an oscillation composed of four triode or MOS tubes. The full-bridge circuit is not easy to produce leakage, and the half-bridge circuit is easy to drain current between the oscillation conversion, so that the waveform is bad, resulting in interference.
The cost of half-bridge circuit is low, the circuit is easy to form, the cost of full-bridge circuit is high, and the circuit is relatively complex. The half-bridge circuit includes a low-end drive module (110) and a high-end drive module (210) for driving each lower transistor (T1) and upper transistor (T2).
Each driver module (110,210) is a charge-capture circuit in which the low-end driver module (110) drives the low-end transistor (T1) with the charge on the capacitive load (C), and the high-end driver module (210) alternately recharges the capacitive load (C) when it is driven by a high voltage source. Each charge capture circuit (110,210) also includes diodes (D1, D2.