Power Integrations’ TOPSwitch-HX Offers Best-in-Class Efficiency Across Entire Load Range, Delivers Up to 150 W

Power Integrations' TOPSwitch-HX Offers Best-in-Class Efficiency Across Entire Load Range, Delivers Up to 150 W

Power Integrations has announced the TOPSwitch^® -HX family of AC-DC power conversion ICs. Power Integrations introduced its original TOPSwitch product in 1994, combining a 700 V switching power MOSFET with controller and supervisory functions into a single monolithic IC. The TOPSwitch-HX family of ICs utilizes Power Integrations' EcoSmart^® energy-efficiency technology and combines great standby power performance with constant, high efficiency under all load conditions, enabling best-in-class efficiency over the entire load range.

New IC Eliminates Costly Separate Standby PSU in High Power Audio/Video Products and Appliances; Speeds Compliance with Latest Energy-Efficiency Standards for Tool Chargers and Printer Adapters

TOPSwitch-HX enables power supply designs that easily meet proposed and existing energy standards such as CEC and ENERGY STAR, while delivering up to 48 W without the need for heat-sinking (and up to 150 W with a heat sink). A new multi-mode control scheme provides highly efficient operation across the entire load range, eliminating the need for a separate standby power supply in some applications.

The control algorithm seamlessly transitions between different operating modes to optimize energy efficiency at all power levels, with the capability to deliver more than 600 mW output for 1-watt input and a no-load power consumption of less than 200 mW. Also, a unique power coefficient (I2f) parameter greatly improves the output power limit accuracy and allows the designer to optimize the design of power-related components to further reduce system cost.