ClampZero Family:Active Clamp IC with Integrated High-Voltage Switch Pairs with InnoSwitch4 Family of Offline Switcher ICs
●The ClampZero IC is an active clamping circuit which recycles otherwise wasted leakage inductance energy.The ClampZero incorporates a high-side power switch and level shifted self-biased controller which receives communication from a low-side transceiver connected to the InnoSwitch4 primary controller
●By ensuring zero voltage switching across all line and load conditions and in both CCM and DCM operating modes,ClampZero combines with InnoSwitch4 to implement a highly flexible active clamp flyback solution.In atypical application paired with the InnoSwitch4 IC,the low switching losses permit use of a high switching frequency,minimizing the physical sizeof the transformer and resulting in an extremely small PCB footprint.
●Zero-voltage switching is achieved by precise timing between the turn-off of the ClampZero and turn-on of the InnoSwitch4 power switch,which completely removes turn-on losses.The overall effect of this synchronized switching,along with the InnoSwitch4 PowiGaN switch with zero turn-off losses,is a flyback converter with zero primary clamp losses and zero power switch switching losses enabling high density,heatsink less flyback designs up to 220 W.
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Datasheet |
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Please see the document for details |
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MinSOP-16A |
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English Chinese Chinese and English Japanese |
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July 2022 |
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1.4 MB |
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