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Transcript
8-Pin High Efficiency Resonant Half-Bridge Control ICs The 8-pin resonant half-bridge control ICs were designed for energy efficient Switch Mode Power Supplies (SMPS) used in LCD televisions and monitors, home theater systems, desktop computers, printers and game console applications. Features • Max 500 kHz per channel output with 50% duty cycle • Floating channel bootstrap operation up to +600VDC • Programmable minimum and maximum switching frequency • Programmable soft start frequency and soft start time • Programmable dead time • Micropower start-up and ultra low quiescent current • Over-current protection using low-side MOSFET Rds(on) • User initiated micropower “sleep mode” • 8-pin IC, simple design with minimal component count PRESS RELEASE DATA SHEETS HI-RES GRAPHIC AC-DC HOME PAGE Advantages • The IRS2795(1,2)S resonant half-bridge control ICs offer a high level of programmability and protection. Features include programmable switching frequency up to 500 kHz with 50 percent fixed duty cycle, programmable soft start frequency and soft start time, and programmable dead time for optimized Zero Voltage Switching (ZVS) under all load conditions to achieve high efficiency and low switching noise. • The dead time is programmed by the CT capacitor. The programmable dead time allows the user to optimize the system with the minimum body diode conduction time for higher efficiency under full load while keeping ZVS switching under no load condition. September 2010