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LLC Resonant half-bridge for TV PSU have applied for higher efficiency power supply application in ranges of 150Watt to 500Watt. The two MOSFETs connected in series with the input supply voltage or power factor correction stage reduce the input voltage applied to the primary side of the transformer by half.? The two MOSFETs are driven ON and OFF symmetrically with 50% duty cycle and no overlapping during ZVS operations with resonant tank used two inductors (LL) and a capacitor (C), known as an LLC configuration.?