The company claimed that theTopSwitch-JX multi-mode control algorithm increases power efficiency across the entire load range. High efficiency at full power minimizes power wasted during normal operation and reduces the complexity and expense of thermal management on the system.
Power Integrations said at low power levels, high efficiency enables adapters with low no-load consumption and increases available power to the system in standby mode for applications, constrained by standards and regulatory controls.
The company added that its multi-cycle modulation mode, which reduces the average switching frequency facilitates light-load efficiency and low power consumption in the no-load condition.
This allows designs to meet new efficiency specifications, such as Energy Star and the EC EuP Ecodesign Directive, while maintaining a stable output voltage. Standby power consumption below 100 mW (for a 20mW load) at 264 VAC is achieved using TopSwitch-JX, the company claimed.
David New, product marketing manager of Power Integrations, said: ”In addition to enhancing light-load operating efficiency, we have also increased the breakdown voltage to 725V in this latest generation TopSwitch device.
”This improves system reliability and allows operation with a high reflected voltage, which reduces the secondary diode cost in many designs. The new IC also incorporates a fast AC-reset circuit, which significantly reduces the number of primary-side components required.”
The TopSwitch-JX family is priced between $0.78 and $1.69 each for 10,000-piece quantities.
