CAP002DG - Zero Loss Automatic X Capacitor Discharge
Power Integrations
General Description
When AC voltage is applied, CAPZero blocks current flow in the X capacitor safety discharge resistors, reducing the power loss to less than 5 mW, or essentially zero1 at 230 VAC.
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™ CAPZero Family
Zero1 Loss Automatic X Capacitor Discharge IC
Product Highlights
• • • • • • • •
Blocks current through X capacitor discharge resistors when AC voltage is connected Automatically discharges X capacitors through discharge resistors when AC is disconnected Simplifies EMI filter design – larger X capacitor allows smaller inductive components with no change in consumption Only two terminals – meets safety standards for use before or after system input fuse >4 mm creepage on package and PCB Self supplied – no external bias required High common mode surge immunity – no external ground connection High differential surge withstand – 1000 V internal MOSFETs
R1 D1 MOV and Other EMI Filter Components
AC
X Capacitor
CAPZero
D2 R2
PI-6599-110711
EcoSmart ® – Energy Eff