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5090MTC

Fairchild Semiconductor
Part Number 5090MTC
Manufacturer Fairchild Semiconductor
Description FAN5090MTC
Published Nov 22, 2010
Detailed Description www.fairchildsemi.com FAN5090 Two Phase Interleaved Synchronous Buck Converter for VRM 9.x Applications Features • Prog...
Datasheet PDF File 5090MTC PDF File

5090MTC
5090MTC


Overview
www.
fairchildsemi.
com FAN5090 Two Phase Interleaved Synchronous Buck Converter for VRM 9.
x Applications Features • Programmable output from 1.
10V to 1.
85V in 25mV steps using an integrated 5-bit DAC • Two interleaved synchronous phases for maximum performance • 100nsec transient response time • Built-in current sharing between phases • Remote sense • Programmable Active Droop (Voltage Positioning) • Programmable switching frequency from 100KHz to 300KHz per phase • Adaptive delay gate switching • Integrated high-current gate drivers • Integrated Power Good, OV, UV, Enable/Soft Start functions • Drives N-channel MOSFETs • Operation optimized for 12V operation • Overcurrent protection using MOSFET sensing • 24 pin TSSOP package Description The FAN5090 is a synchronous two-phase DC-DC controller IC which provides a highly accurate, programmable output voltage for VRM 9.
x processors.
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.
The FAN5090 features Programmable Active Droop for 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.
The FAN5090 uses a 5-bit D/A converter to program the output voltage from 1.
10V to 1.
85V in 25mV steps with an accuracy of 1%.
The FAN5090 uses a high level of integration to deliver load currents in excess of 50A from a 12V source with minimal external circuitry.
The FAN5090 also offers integrated functions including Power Good, Output Enable/Soft Start, under-voltage lockout, over-voltage protection, and adjustable current limiting with independent current sense on each phase.
It is available in a 24 pin TSSOP package.
Applications • • • • Power supply for Pentium IV Power supply for Athlon VRM for Pentium IV processor Programmabl...


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