Circuit features: (1) Two forward converter circuits are connected in parallel, T1 and T2 are driven in anti-phase at 180 degrees, the power is doubled, the output frequency is doubled, and the ripple and dynamic response are improved; (2) S1 and S2 are connected in series (S3 and S4 are connected in series), and the voltage resistance of the switch tube is halved; (3) The feedback coil is cancelled, and V1, V2, V3, and V4 are all energy feeding paths, which reduces the requirements for the manufacturing process of the transformer; (4) It has a dead zone limitation characteristic, and the two parts of the circuit do not have a common conduction problem, and the reliability is relatively high. Characteristic analysis: Forward: When turned on, the input feeds power to the load, and when turned off, L supplies power to the load. Dual forward converter circuit:
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