ClampZero Family Active Clamp IC with Integrated High-Voltage Switch Pairs with InnoSwitch4 Family of Offline Switcher ICs
●The ClampZero™ IC pairs with the InnoSwitch™4 family of ICs to eliminate energy wasted due to switching losses in the clamp and primary switch. This dramatically improves power supply efficiency – easily exceeding 95% - while maintaining the flexibility and low component count of the flyback architecture.
●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 a typical application paired with the InnoSwitch4 IC, the low switching losses permit use of a high switching frequency, minimizing the physical size of 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, heatsinkless flyback designs up to 135 W.
ClampZero Family 、 ClampZero 、 CPZ1061M 、 CPZ1062M 、 CPZ1061M-TL |
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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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November 2020 |
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Rev. C |
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1.2 MB |
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