CAP017DG [Power Integrations]

CAPZero is a two-terminal IC that blocks current through X capacitor discharge resistors when AC voltage is connected, reducing power loss to less than 5 mW. When AC is disconnected, it automatically discharges the X capacitor. This allows flexibility in X capacitor selection for EMI filtering and inductor cost reduction without increasing power consumption. The device is self-supplied, requires no external bias, and meets safety standards for use before or after the system input fuse. It is designed for EuP Lot 6 compliance and ultra-low standby power.