Power Integrations introduces new LLC Switcher IC with 1650 W continuous output capability

     Power Integrations has announced a significant triplication of the power output of its HiperLCS™-2 chipset. Utilizing advanced half-bridge switching technology and innovative package design, the new device delivers up to 1650 W of continuous output power while maintaining over 98% efficiency. Designed for industrial power supplies, as well as chargers for electric scooters and outdoor power tools, this new member of the HiperLCS-2 family maximizes efficiency and integration. By minimizing housing size and eliminating the need for fans and vents, it improves reliability while improving dust and moisture resistance.

     The highly integrated HiperLCS-2 series reduces the number of components and board footprint of half-bridge LLC resonant power converters by 30% to 60% in applications of 50w and above. With its thermally optimized powerdip™ package, the new IC boosts sustained power output to more than 1.6 kW and supports peak loads of up to 2.5 kW. The package contains an electrically insulated, thermally conductive ceramic pad that allows easy connection to any flat, thermally sunk surface. In addition, it ensures that the package pin has enough creepage, providing impressive thermal performance at less than 1 degree Celsius per watt.

     The main-side HiperLCS2-HB device within the chipset integrates 600 V FredFETs in a half-bridge configuration. By integrating self-bias and startup control, the IC can operate without an external biased power supply, reducing system complexity and cost. In addition, the HiperLCS2-SR companion IC integrates a secondary master controller for optimized synchronous rectification (SR) to minimize output rectification losses.

     In addition, the chipset includes a FluxLink™ isolator that ensures robust high-speed feedback to the main-side IC and eliminates the need for slow, fail-prone optocouplers. Multi-mode burst operation control improves light and no-load efficiency while preventing audible noise and minimizing output ripple. To further improve reliability, integrated circuits provide a comprehensive set of fail-safe functions.