The new member of the family is intended for industrial power supplies, as well as chargers for electric scooters and outdoor power tools, where its high efficiency and high level of integration reduce the volume of the housing and eliminate the need for vents and fans, improving reliability and resistance to dust and moisture.
The highly integrated HiperLCS-2 family reduces the number of components and board area of LLC half-bridge resonant power converters by 30 to 60 percent in applications of 50 W and above. The new IC increases continuous power to over 1.6 kW and enables brief peak loads of 2.5 kW by utilizing a new, thermally efficient POWeDIP™ package. This package includes an electrically insulating, thermally conductive ceramic die that can be easily attached to any flat, heat-dissipating surface. It provides sufficient leakage to the package pins, enabling an overall thermal performance of less than 1 degree Celsius per watt.
Zeeshan Kabeer, Director of Product Marketing at Power Integrations, states, “High power and high efficiency are non-negotiable requirements for fully sealed chargers and adapters. For those who rely on power tools or personal transportation for their livelihood, charger failure due to dust, moisture, insects, or damage to electromechanical components is unacceptable. Our new 1650W, high-efficiency HiperLCS-2 device enables the manufacture of fully sealed chargers for these mission-critical applications.”
The primary-side HiperLCS2-HB chipset devices incorporate 600V FREDFETs in a half-bridge configuration. Self-bias and start-up control allow operation without an external bias source, reducing system cost and complexity. The chipset's complementary IC, the HiperLCS2-SR, incorporates a secondary-side master driver that provides optimized synchronous rectification (SR) to reduce output rectification losses. It also includes a FluxLink™ isolator for robust, high-speed feedback to the primary-side IC, eliminating the need for a slow and unreliable optocoupler. This IC controls multimode burst operation, ensuring excellent underload and no-load performance while eliminating audible noise and reducing output ripple. To ensure high reliability, the IC also provides comprehensive fault protection.
Availability and Resources:
The price of POWeDIP HiperLCS-2 ICs starts at $5.39 for quantities of 10,000 units. Reference designs are available for download for a 1650 W LLC DC-DC half-bridge resonant converter (DER-1060), a 720 W LLC DC-DC half-bridge resonant converter (DER-978), and a 720 W LLC PFC power supply with constant voltage and constant current mode control (DER-984).
