FAN5029MPX

FAN5029MPX Datasheet

FAN5029 8-Bit Programmable 2- to 5-Phase Synchronous Buck Controller

Part	Datasheet
FAN5029MPX	FAN5029MPX (pdf)

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FAN5029 8-Bit Programmable 2- to 5-Phase Synchronous Buck Controller January 2007 FAN5029 8-Bit Programmable 2- to 5-Phase Synchronous Buck Controller • Selectable 2-, 3-, 4-, or 5-phase operation at up to 1MHz per phase • ±7.7mV worst-case differential sensing error • Active current balancing between the output phases • Power good and crowbar blanking supports on-the- fly VID code changes • Selectable VR10 extended 7-bit and VR11 8-bit VID tables • Programmable short-circuit protection and latch-off delay • Programmable soft start ramp • Desktop PC/Server processor power supplies for existing and next generation Intel processors • VRM modules products Part Numbers • FAN5029MPX is not for new designs. • The FAN5029MPX_NAAC238 replaces the FAN5029MPX and is compatible with all VR10 and VR11 processors. The FAN5029 is a multi-phase buck switching regulator controller optimized to convert a 12V input supply to the processor core voltage required by highperformance processors. It has an internal 8-bit DAC that converts a digital voltage identification VID code that is sent from the processor to set the output voltage between 0.5V and 1.6V. It outputs a PWM to external MOSFET drivers that, in turn, drive the switching power MOSFETs. The switching frequency of the design is programmable by a single resistor value and the number of phases can be programmed to support 2-, 3-, 4-, or 5-phase applications. The FAN5029 also includes programmable no-load offset and droop functions to adjust the output voltage as a function of the load current, as required by the Intel specifications. The FAN5029 also provides an accurate and reliable short-circuit protection function with an adjustable over-current set point. The FAN5029 is specified over the extended commercial temperature range of 0°C to +85°C and is available in a 40-lead MLP package. Ordering Information FAN5029MPX FAN5029MPX_NAAC238 Temperature Range 0°C to 85°C Package Type Lead Free Packing Method MLP-40 Not For New Designs Tape and Reel For more information, please contact Ron Berthiaume at Quantity per Reel 3,000 FAN5029 8-Bit Programmable 2- to 5-Phase Synchronous Buck Controller Block Diagram Figure 1 Block Diagram FAN5029 8-Bit Programmable 2- to 5-Phase Synchronous Buck Controller TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. ACEx ActiveArray Bottomless Build it Now CoolFET CROSSVOLT DOME EcoSPARK E2CMOS EnSigna FACT Quiet Series FASTr FPS FRFET GlobalOptoisolator GTO HiSeC I2C i-Lo ImpliedDisconnect IntelliMAX ISOPLANAR LittleFET MICROCOUPLER MicroFET MicroPak MICROWIRE MSX MSXPro OCX OCXPro OPTOPLANAR PACMAN POP Power247 PowerEdge PowerSaver QS QT Optoelectronics Quiet Series RapidConfigure RapidConnect ScalarPump uSerDes SILENT SMART START SPM Stealth SuperFET SuperSOT -3 SuperSOT -6 SuperSOT -8 SyncFET TCM TinyBoost TinyBuck TINYOPTO TinyPower TinyPWM TruTranslation UniFET VCX Wire Across the board. Around the world. Programmable Active Droop The Power 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. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS. 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 FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: Life support devices or systems are devices or systems A critical component in any component of a life which, a are intended for surgical implant into the body or support, device, or system whose failure to perform

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FAN5029 8-Bit Programmable 2- to 5-Phase Synchronous Buck Controller

January 2007

FAN5029
8-Bit Programmable 2- to 5-Phase Synchronous Buck Controller
• Selectable 2-, 3-, 4-, or 5-phase operation at up to 1MHz per phase
• ±7.7mV worst-case differential sensing error
• Active current balancing between the output phases
• Power good and crowbar blanking supports on-the-
fly VID code changes
• Selectable VR10 extended 7-bit and VR11 8-bit

VID tables
• Programmable short-circuit protection and latch-off
delay
• Programmable soft start ramp
• Desktop PC/Server processor power supplies for existing and next generation Intel processors
• VRM modules products

Part Numbers
• FAN5029MPX is not for new designs.
• The FAN5029MPX_NAAC238 replaces the

FAN5029MPX and is compatible with all VR10 and VR11 processors.

The FAN5029 is a multi-phase buck switching regulator controller optimized to convert a 12V input supply to the processor core voltage required by highperformance processors. It has an internal 8-bit DAC that converts a digital voltage identification VID code that is sent from the processor to set the output voltage between 0.5V and 1.6V. It outputs a PWM to external MOSFET drivers that, in turn, drive the switching power MOSFETs. The switching frequency of the design is programmable by a single resistor value and the number of phases can be programmed to support 2-, 3-, 4-, or 5-phase applications.

The FAN5029 also includes programmable no-load offset and droop functions to adjust the output voltage as a function of the load current, as required by the Intel specifications. The FAN5029 also provides an accurate and reliable short-circuit protection function with an adjustable over-current set point.

The FAN5029 is specified over the extended commercial temperature range of 0°C to +85°C and is available in a 40-lead MLP package.
Ordering Information

FAN5029MPX FAN5029MPX_NAAC238

Temperature Range
0°C to 85°C

Package Type

Lead Free

Packing Method

MLP-40

Not For New Designs

Tape and Reel

For more information, please contact Ron Berthiaume at

Quantity per Reel
3,000

FAN5029 8-Bit Programmable 2- to 5-Phase Synchronous Buck Controller

Block Diagram

Figure 1 Block Diagram

FAN5029 8-Bit Programmable 2- to 5-Phase Synchronous Buck Controller

TRADEMARKS

The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks.

ACEx ActiveArray Bottomless Build it Now CoolFET CROSSVOLT DOME EcoSPARK E2CMOS EnSigna

FACT Quiet Series

FASTr FPS FRFET

GlobalOptoisolator GTO HiSeC I2C i-Lo ImpliedDisconnect IntelliMAX ISOPLANAR LittleFET MICROCOUPLER MicroFET MicroPak MICROWIRE MSX MSXPro OCX

OCXPro

OPTOPLANAR PACMAN POP Power247 PowerEdge PowerSaver

QS QT Optoelectronics Quiet Series RapidConfigure RapidConnect ScalarPump
uSerDes SILENT

SMART START SPM Stealth SuperFET SuperSOT -3 SuperSOT -6 SuperSOT -8 SyncFET TCM

TinyBoost TinyBuck

TINYOPTO TinyPower TinyPWM TruTranslation

UniFET VCX Wire

Across the board. Around the world.

Programmable Active Droop The Power

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. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS.

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 FAIRCHILD SEMICONDUCTOR CORPORATION.

As used herein:

Life support devices or systems are devices or systems A critical component in any component of a life
which, a are intended for surgical implant into the body or
support, device, or system whose failure to perform

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived FAN5029MPX Datasheet file may be downloaded here without warranties.

Datasheet ID: FAN5029MPX 513901