Power Integrations, which supplies high-voltage integrated circuits for energy-efficient power conversion, has achieved a two-fold increase in power output from its HiperLCS-2 chipset.
Featuring half-bridge switch technology and an innovative package, the new device can deliver up to 1.6 kW of continuous output power with over 98% efficiency and permits brief peak loads of 2.5 kW by leveraging a new, thermally efficient POWeDIP package. It is designed to be used in industrial power supplies as well as chargers for e-scooters and outdoor power tools, where its high efficiency and high level of integration can reduce enclosure volume and eliminate the need for air vents and fans, enhancing reliability and resistance to dust and moisture.
The HiperLCS-2 reduces component count and board area of half-bridge LLC resonant power converters by 30-60% in applications of 50 W and higher, according to the company.
The package includes an electrically insulating, thermally conductive ceramic pad that can be easily attached to any flat, heat-sinking surface. It provides sufficient creepage to the package pins, enabling an overall thermal performance of less than 1° C per watt.
The primary-side HiperLCS2-HB devices in the chipset incorporate 600 V FREDFETs in a half-bridge configuration. Self-bias and startup control enable operation without an external bias supply, reducing system cost and complexity.
The companion IC in the chipset, the HiperLCS2-SR, incorporates a secondary-side master controller 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. The IC controls multi-mode burst operation, ensuring excellent light- and no-load performance while eliminating audible noise and reducing output ripple.
“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, high-efficiency, 1,650 W HiperLCS-2 device allows the manufacture of completely sealed chargers for these mission-critical applications,” said Zeeshan Kabeer, Product Marketing Manager at Power Integrations.
Source: Power Integrations
