Power Electronics

X-Cap Discharge ICs Are IEC-Compliant

Power Integrations' CAPZero automatic X-capacitor discharge IC is now certified to meet IEC CTL DSH 1080, the new mandatory addition to the Certification Body (CB) scheme of  the IEC60950 and IEC60065 standards governing X-capacitor discharge safety regulations. CAPZero ICs are simple, SO-8-packaged, two-terminal devices that require only the addition of discharge resistors to automatically implement the X-capacitor discharge function.

New power supplies must comply immediately with the IEC CTL DSH 1080 requirement, which ensures that a power supply's X-capacitor safety-discharge function remains operational over the life of the product. CB-certified X-capacitor discharge devices such as CAPZero ICs pass a stringent safety-testing protocol including a lengthy period of high-temperature and high-humidity testing and high voltage line-surge testing. Power supplies using a certified X-capacitor discharge device are deemed automatically compliant. Power supplies not utilizing a CB-certified device, including those using discrete components or other non-certified ICs, must pass the same environmental tests as well as line-surge testing with all protection devices such as varistors and bulk capacitors removed. Any redesign would result in a need for re-certification of the power supply.

The CB certificate, Nemko certificate, and Nemko test report for the CAPZero ICs, plus full supporting documentation are available at http://www.powerint.com/en/products/capzero-family/capzero.

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