Grįžti į Power Integrations

Power Integrations CAPZero-3 X-Capacitor Discharge ICs

Power Integrations CAPZero-3 Energy-Saving X-Capacitor Discharge ICs reduce standby power for appliance applications. The two-terminal CAPZero-3 ICs enable designers to easily meet IEC60335 safety approvals for major appliances and cover all capacitor values from up to 6µF. The IEC60335 is the discharge safety standard for all appliances. To protect the user from an electrical hazard, the voltage across the input X capacitor must discharge to less than 34V within <1s after the AC is removed.

CAPZero-3 ICs block current flow through the X-capacitor discharge resistors when the AC voltage is connected and automatically discharge X capacitors through those resistors when the AC is disconnected. The ICs simplify EMI filter designs while permitting the use of larger X capacitors, which in turn enables smaller inductive components to be used with no resulting change in power consumption.

Power Integrations CAPZero-3 ICs can be placed before or after a system’s input fuse. Devices deliver high common-mode surge immunity so that no external ground connection is necessary. The components also feature a high differential surge withstand due to 1000V internal MOSFETs. Creepage on the package and PCB is maintained at >4mm.

Features

  • Provides lossless ZC (Zero Crossing) signal to system MCU
  • Meets IEC 60335 X capacitor discharge of <34V in <1s
  • One part to cover X capacitor values up to 6µF
  • 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 the system input fuse
  • >4mm creepage on the 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
  • EcoSmart™, energy efficient with <5mW consumption at 230VAC for all X capacitor values

Applications

  • All AC-DC converters with X capacitors of 100nF up to 6mF
  • Appliances requiring ErP Lot 6 compliance
  • Adapters requiring ultra-low no-load consumption
  • All converters require very low standby power
  • Lossless generation of zero crossing signal

Typical Application

Application Circuit Diagram - Power Integrations CAPZero-3 X-Capacitor Discharge ICs
Paskelbta: 2019-11-05 | Atnaujinta: 2023-11-09