Power Integrations unveils 4th gen CAPZero family
Power Integrations has expanded its CAPZero family of X-capacitor discharge ICs with the introduction of the CAPZero-4 device for industrial and consumer applications.
The company pioneered the X-capacitor discharge function, which disengages the energy-consuming discharge resistor in an AC-DC power supply until the device is unplugged and the resistor is needed to safely bleed power from the X-capacitor.
The latest iteration, the CAPZero-4 family, reduces system no-load and standby input power by up to 1000 mW – critical when total system standby power requirements can be as low as 300 mW. This is achieved by a device which consumes less than 1 mW to support zero-watt no-load operation. It also features a wide operating temperature of -40 degC to 125 degC to support demanding outdoor industrial applications.
“CAPZero-4 makes it easy for our customers in industrial and consumer markets to meet increasingly stringent standby and no-load requirements,” said Edward Ong, senior product marketing manager at Power Integrations. “The fourth generation of our CAPZero technology delivers more of the available power to the load during standby. With its pin-to-pin and package compatibility with previous CAPZero devices, customers can adopt it without redesigning, making it an ideal solution across a wide range of markets.”
CAPZero-4 ICs meet the needs of the appliance, display, adapter, and industrial markets supporting AC-DC converters with line-to-neutral input capacitance between 100 nF and 6 μF. It is ideal for appliances requiring ErP Lot 6 compliance and adapters requiring ultralow no-load consumption (less than 300 mW).
By eliminating the losses typically caused by the X-capacitor bleed resistors, the technology is designed to increase the available standby power for embedded power supplies that must meet strict standby power limits. Since introducing the technology in 2010, Power Integrations has shipped more than one billion CAPZero ICs.
