Transcription of Zero Voltage Switching - Texas Instruments
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Zero Voltage Switching - Texas Instruments
zero Voltage SwitchingResonant Power ConversionBill Andreycaking zero current, hence zero power while true, two obvious concerns canin1pede the quest for high efficiency operationwith high Voltage nature of the resonant tank and zerocurrent Switching limitation, the peak switchcurrent is significantly higher than its squarewave counterpart. In fact, the peak of the fullload switch current is a minimum of twice thatof its square wave kin. In its off state, theswitch returns to a blocking a high voltageevery cycle. When activated by the next drivepulse, the MOSFET output capacitance ( Coss)is discharged by the FET, contributing a signifi-cant power loss at high frequencies and highvoltages.
Resonant Power Conversion Bill Andreycak ing zero current, hence zero power switching. And while true, two obvious concerns can in1pede the quest for high efficiency operation with high voltage inputs. By nature of the resonant tank and zero …
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