FAN5098

更新时间： 2024-09-23 22:50:59

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		转换器
页数	文件大小	规格书
17页	461K
描述
Two Phase Interleaved Synchronous Buck Converter for AMD Hammer⑩

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中文翻译

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FAN5098 数据手册

www.fairchildsemi.com

FAN5098

Two Phase Interleaved Synchronous Buck Converter

for AMD Hammer™

Features

Description

• Programmable output from 800mV to 1.550V in 25mV

steps using an integrated 5-bit DAC

• Two interleaved synchronous phases for maximum

performance

The FAN5098 is a synchronous two-phase DC-DC controller

IC which provides a highly accurate, programmable output

voltage for the AMD^®Hammer™ processor. Two inter-

leaved synchronous buck regulator phases with built-in cur-

rent sharing operate 180° out of phase to provide the fast

transient response needed to satisfy high current applications

while minimizing external components.

• 100nsec transient response time

• Built-in current sharing between phases

• Remote sense

• Programmable Active Droop^(Voltage Positioning)

• Programmable switching frequency from 100KHz to

1MHz per phase

The FAN5098 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 FAN5098 uses a 5-bit D/A converter to program the out-

put voltage from 800mV to 1.550V in 25mV steps with an

accuracy of 1%. The FAN5098 uses a high level of integra-

tion to deliver load currents in excess of 50A from a 12V

source with minimal external circuitry.

The FAN5098 also offers integrated functions including

Power Good, Output Enable/Soft Start, under-voltage lock-

out, over-voltage protection, and adjustable current limiting

with independent current sense on each phase. It is available

in a 24 pin TSSOP package.

• 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

• High efﬁciency mode (E*) at light load

• Overcurrent protection using MOSFET sensing

• 24 pin TSSOP package

Applications

• VRM/VRD for 64-Bit Athlon™ and Opteron™ CPU’s

• VRM/VRD for Advanced CPU’s

• Programmable step-down power supply

Block Diagram

+12V

BYPASS

+12V

BOOT A

UVLO

5V Reg

OSC

R_T

Digital

Control

+12V

Current

Limit

BOOT B

+12V

GNDA

Digital

Control

+12V

Power

Good

5-Bit

DAC

2 3 4

PWRGD

ILIM

VID2 VID4

VID3

VID0

VID1

DROOP/E*

ENABLE/SS

AGND

Athlon™ and Hammer™ are registered trademarks of AMD . Programmable Active Droop is a trademark of Fairchild Semiconductor.

REV. 1.0.7 2/18/03

12 3 4 5 6 7...17

中文翻译

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与FAN5098相关器件

型号	品牌	获取价格	描述	数据表
FAN5098MTC	FAIRCHILD	获取价格	Switching Controller, Current/voltage-mode, 3A, 2000kHz Switching Freq-Max, PDSO24, TSSOP-
FAN5099	FAIRCHILD	获取价格	Wide Frequency Synchronous Buck PWM AND LDO Controller
FAN5099_08	FAIRCHILD	获取价格	Wide Frequency Synchronous Buck PW & LDO Controller
FAN5099EMTCX	FAIRCHILD	获取价格	Wide Frequency Synchronous Buck PWM AND LDO Controller
FAN5099EMX	FAIRCHILD	获取价格	Wide Frequency Synchronous Buck PWM AND LDO Controller
FAN5099M	FAIRCHILD	获取价格	Switching Regulator/Controller, Current-mode, 360kHz Switching Freq-Max, PDSO16
FAN5099MTCX	FAIRCHILD	获取价格	Wide Frequency Synchronous Buck PW & LDO Controller
FAN5099MX	FAIRCHILD	获取价格	Wide Frequency Synchronous Buck PWM AND LDO Controller
FAN50FC3	FAIRCHILD	获取价格	8-Bit Programmable, 2- to 3-Phase FastvCore⑩
FAN50FC3MPX	FAIRCHILD	获取价格	8-Bit Programmable, 2- to 3-Phase FastvCore⑩

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