FAN5091MTCX

FAN5091MTCX Datasheet

FAN5091

Part	Datasheet
FAN5091MTCX	FAN5091MTCX (pdf)

Related Parts	Information
FAN5091MTC	FAN5091MTC

PDF Datasheet Preview
FAN5091 Two Slice Interleaved Synchronous Buck Converter • Programmable output from 1.10V to 1.85V in 25mV steps using an integrated 5-bit DAC • Two interleaved synchronous slices for maximum performance • 100nsec response time • Built-in current sharing between slices • Remote sense • Programmable Active Voltage Positioning • Programmable frequency from 200KHz to 2MHz • 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 5V operation • High mode E* at light load • Overcurrent protection using MOSFET sensing • 24 pin TSSOP package • Power supply for IV • Power supply for • VRM for Pentium IV processor • Programmable step-down power supply The FAN5091 is a synchronous multi-slice DC-DC controller IC which provides a highly accurate, programmable output voltage for all high-performance processors. Two interleaved synchronous buck regulator slices 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 FAN5091 features remote voltage sensing and Programmable Active for 100nsec 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. The FAN5091 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 The FAN5091 uses a high level of integration to deliver load currents in excess of 50A from a 5V source with minimal external circuitry. The FAN5091 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 slice. It is available in a 24 pin TSSOP package. Block Diagram Bypass +12V 5V Reg +12V Digital Control +12V VO +12V Digital Control +12V 5-Bit Power Good 1234 5 VID0 VID2 VID4 VID1 VID3 PWRGD DROOP/E* GNDA 22 ENABLE/SS 20 ILIM Pentium is a registered trademark of Intel Corporation. Athlon is a registered trademark of AMD. Programmable Active Droop is a trademark of Fairchild Semiconductor. FAN5091 Pin Assignments VID0 VID1 VID2 VID3 VID4 BYPASS AGND LDRVB PGNDB SWB HDRVB BOOTB FAN5091 VFB RT ENABLE/SS DROOP/E* ILIM PWRGD VCC LDRVA PGNDA SWA HDRVA BOOTA PRODUCT SPECIFICATION Pin Number Pin Name VID0-4 BYPASS AGND LDRVB Ordering Information Product Number FAN5091MTC Description 5V Package 24 pin TSSOP PRODUCT SPECIFICATION DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: Life support devices or systems are devices or systems which, a are intended for surgical implant into the body, or b support or sustain life, and c whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. 5/10/01 0.0m 005 Stock#DS30005091 2001 Fairchild Semiconductor Corporation

PDF Datasheet Preview

FAN5091

Two Slice Interleaved Synchronous Buck Converter
• Programmable output from 1.10V to 1.85V in 25mV steps using an integrated 5-bit DAC
• Two interleaved synchronous slices for maximum performance
• 100nsec response time
• Built-in current sharing between slices
• Remote sense
• Programmable Active Voltage Positioning
• Programmable frequency from 200KHz to 2MHz
• 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 5V operation
• High mode E* at light load
• Overcurrent protection using MOSFET sensing
• 24 pin TSSOP package
• Power supply for IV
• Power supply for
• VRM for Pentium IV processor
• Programmable step-down power supply

The FAN5091 is a synchronous multi-slice DC-DC controller IC which provides a highly accurate, programmable output voltage for all high-performance processors. Two interleaved synchronous buck regulator slices 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 FAN5091 features remote voltage sensing and Programmable Active for 100nsec 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. The FAN5091 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 The FAN5091 uses a high level of integration to deliver load currents in excess of 50A from a 5V source with minimal external circuitry. The FAN5091 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 slice. It is available in a 24 pin TSSOP package.

Block Diagram

Bypass
+12V
5V Reg
+12V

Digital

Control +12V

VO +12V

Digital

Control +12V
5-Bit

Power

Good
1234 5

VID0 VID2 VID4 VID1 VID3

PWRGD

DROOP/E* GNDA
22 ENABLE/SS
20 ILIM

Pentium is a registered trademark of Intel Corporation. Athlon is a registered trademark of AMD. Programmable Active Droop is a trademark of Fairchild Semiconductor.

FAN5091

Pin Assignments

VID0 VID1 VID2 VID3 VID4 BYPASS AGND LDRVB PGNDB SWB HDRVB

BOOTB

FAN5091

VFB RT ENABLE/SS

DROOP/E* ILIM PWRGD VCC LDRVA PGNDA SWA HDRVA BOOTA

PRODUCT SPECIFICATION

Pin Number Pin Name

VID0-4

BYPASS

AGND

LDRVB
Ordering Information

Product Number FAN5091MTC

Description 5V

Package 24 pin TSSOP

PRODUCT SPECIFICATION

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein:

Life support devices or systems are devices or systems which, a are intended for surgical implant into the body, or b support or sustain life, and c whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user.

A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
5/10/01 0.0m 005 Stock#DS30005091 2001 Fairchild Semiconductor Corporation

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Datasheet ID: FAN5091MTCX 513914