There are many kinds of circuit structures of switching regulated power supply:

(1) According to the driving method, there are self-excited and other excited.

(2) According to the working mode of DC/DC converter, it is divided into: (1) single-end excitation and reverse excitation, push-pull, half-bridge, full-bridge, etc.; ② Buck type, boost type and lift type, etc.

(3) According to the circuit composition, there are resonant and non-resonant types.

(4) According to the control mode :① pulse width modulation (PWM) type; ② Pulse frequency modulation (PFM) type; (3) Hybrid PWM and PFM.

(5) According to whether the power supply is isolated and the coupling method of the feedback control signal, there are isolated, non-isolated and transformer coupling, photoelectric coupling, etc.

Shanghai switch type regulator manufacturers