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FAN5092MTC Scheda tecnica(PDF) 1 Page - Fairchild Semiconductor |
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FAN5092MTC Scheda tecnica(HTML) 1 Page - Fairchild Semiconductor |
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1 / 20 page  www.fairchildsemi.com Programmable Active Droop is a trademark of Fairchild Semiconductor. REV. 1.0.7 6/20/02 Features • Output from 1.1V to 5V • Integrated high-current gate drivers • Two interleaved synchronous phases per IC for maximum performance • Up to 4 phase power system • Built-in current sharing between phases and between ICs • Frequency and phase synchronization between ICs • Remote sense and Programmable Active Droop™ • High precision voltage reference • High speed transient response • Programmable frequency from 200KHz to 2MHz • Adaptive delay gate switching • Integrated Power Good, OV, UV, Enable/Soft Start functions • Drives N-channel MOSFETs • Operation optimized for 12V • High efficiency mode at light load • Overcurrent protection using MOSFET sensing • 28 pin TSSOP package Applications • Power supply for Logic • Modular Power supply Description The FAN5092 is a synchronous multi-slice DC-DC controller IC which provides a highly accurate, programmable output voltage for all high-current applications. Two interleaved synchronous buck regulator phases with built-in current sharing operate 180 ° out of phase to provide the fast transient response needed to satisfy high current applications while minimizing external components. FAN5092s can be paralleled while maintaining both frequency and phase synchronization and ensuring current sharing in a high-power system. The FAN5092 features remote voltage sensing, Programmable Active Droop and advanced response for optimal converter transient response with minimum output capacitance. It has integrated high-current gate drivers with adaptive delay gate switching, eliminating the need for external drive devices. These make it possible to create power supplies running at a switching frequency as high as 4MHz, for ultra-high density. The output voltage can be set from 1.1V to 5V with an accuracy of 0.5%. The FAN5092 uses a high level of integration to deliver load currents in excess of 150A from a 12V source with minimal external circuitry. The FAN5092 also offers integrated functions including Power Good, Output Enable/Soft Start, under-voltage lockout, over- voltage protection, and current limiting with independent current sense on each slice. It is available in a 28-pin TSSOP package. Block Diagram +12V +12V +12V +12V FAN5092 VFB 3 3V @ 120A PHASE CLK ISHR + FAN5092 VFB PHASE CLK ISHR VFB + FAN5092 High Current System Voltage Buck Converter |
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