Power Integrations CAP004DG

Description
CAPZero is an automatic X capacitor discharge IC that blocks current through X capacitor discharge resistors when AC voltage is connected. When AC voltage is disconnected, it automatically discharges X capacitors through discharge resistors. This simplifies EMI filter design, allowing for larger X capacitors and smaller inductive components without changing consumption. CAPZero has only two terminals, meeting safety standards for use before or after the system input fuse. It has high creepage on the package and PCB, is self-supplied with no external bias required, and has high common mode surge immunity and high differential surge withstand.

Features
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
Only two terminals
Meets safety standards for use before or after system input fuse
High creepage on package and PCB
Self-supplied
High common mode surge immunity
High differential surge withstand

Applications
All AC/DC converters with X capacitors >100 nF
Appliances requiring EuP Lot 6 compliance
Adapters requiring ultra low no-load consumption
All converters requiring very low standby power