Power Integrations CapZero™ ICs
Power Integrations CapZero™ ICs block current flow in the X capacitor safety discharge resistors when AC voltage is applied, reducing the power loss to less than 5mW, or essentially zero at 230VAC. CapZero ICs automatically discharge X capacitors through discharge resistors when AC is disconnected. They simplify EMI filter design, have only two terminals improving safety standards, have <4mm creepage on package and PCB. CapZero ICs are self-supplied, requiring no external bias, have high common-mode surge immunity, high differential surge withstand, and are EcoSmart®/energy-efficient. The ICs feature simplicity and ruggedness, which makes it an ideal choice in systems designed to meet ErP Lot 6 requirements.
The CAPZero Reference Design Board (RDK-252) demonstration board employs the CAP014DG CAPZero IC and operates over a universal input range. This demo board for the CapZero family is designed and tested to operate with an ambient temperature environment of up to 105ºC.
Features
- Meets IEC 60335 X capacitor discharge of <34 V in <1 sec
- One part to cover X capacitor values from 100nF to 6mF
- 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
- <5mW consumption at 230VAC for all X capacitor values
- >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 - 1000V internal MOSFETs
- NEMKO and CB certification
Applications
- All ACDC converters with X capacitors >100nF up to 6µF
- Appliances requiring EuP Lot 6 compliance
- Adapters requiring ultra-low no-load consumption
- All converters requiring very low standby power
- Lossless generation of zero-crossing signal
- Small and major appliances requiring ErP lot 6 compliance
- Comfort appliances
- Industrial applications
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Additional Resources
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Inilathala: 2010-09-15
| Na-update: 2023-02-28