CAP017DG

Specialized ICS Overview

The CAP017DG is a specialized PMIC from the CapZero™ family designed for automatic X capacitor discharge in AC-DC converters. It features a 1000 V breakdown voltage and supports total series resistance of 300 kW, enabling compliance with IEC 62301 standby power requirements by reducing loss to less than 5 mW at 230 VAC. The device operates within an ambient temperature range of -10 °C to 105 °C and draws a typical supply current of 21.7 mA. Packaged in a standard SO-8 (D Package) tube, it provides high common mode surge immunity without requiring an external ground connection.

Specialized ICS Feature Summary

• Zero-loss operation: Blocks current flow in safety discharge resistors during AC application, reducing standby power loss to <5 mW.
• High voltage rating: 1000 V internal MOSFETs provide differential surge withstand capability suitable for demanding environments.
• Self-supplied design: Operates without external bias or ground connections, simplifying PCB layout and improving reliability.
• Automatic discharge: Connects internal series resistors upon AC disconnection to safely drain X capacitors below SELV levels.

Specialized ICS Applications

• Appliances requiring EuP Lot 6 compliance
• Adapters requiring ultra low no-load consumption
• Converters requiring very low standby power

Specialized ICS Procurement Notes

Verify package configuration against project needs; the base model CAP017DG is supplied in tubes, while tape and reel options are available via suffixes like TL. Confirm that the 1000 V rating aligns with system surge specifications, particularly if MOV placement differs from direct X capacitor positioning. Ensure external resistor values match the 300 kW total series resistance requirement specified in the component selection table.

Specialized ICS Selection Notes

Select the CAP017DG when the application requires a 1000 V breakdown voltage and a total series resistance of 300 kW. This specific value corresponds to a peak drain current of 2.667 mA. Verify that the system's differential surge voltage does not exceed the device's withstand capabilities without additional protection components like C_EXT. Consider thermal resistance characteristics if operating near the upper limit of the -10 °C to 105 °C range.

Specialized ICS Part Context

The CAP017DG belongs to the CapZero™ family of zero-loss automatic X capacitor discharge ICs manufactured by Power Integrations. It shares functional similarities with other family members like CAP016DG and CAP018DG but is distinguished by its specific 1000 V rating and 300 kW total series resistance. This places it between lower resistance/higher current options and higher resistance/lower current variants within the product line.

Specialized ICS Replacement Considerations

Direct replacements within the same family include CAP016DG (2000 nF, 360 kW) and CAP018DG (3500 nF, 200 kW), provided the external resistor network can be adjusted to meet the new total series resistance requirements. Ensure the replacement maintains the required 1000 V breakdown voltage for the specific surge environment.