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Data Sheet No. PD94704

IR3088A

XPHASE

TM

PHASE IC WITH FAULT AND OVERTEMP DETECT

DESCRIPTION

The IR3088A Phase IC combined with an IR

XPhase

TM

Control IC provides a full featured and flexible way to

implement power solutions for the latest high performance CPUs and ASICs. The 鈥淐ontrol鈥?IC provides

overall system control and interfaces with any number of 鈥淧hase鈥?ICs which each drive and monitor a single

phase of a multiphase converter. The

XPhase

TM

architecture results in a power supply that is smaller, less

expensive, and easier to design while providing higher efficiency than conventional approaches.

The IR3088A is intended for the following application conditions;

鈥?/div>

Excessive impedance between converter and load

鈥?/div>

Output voltage exceeding the control IC reference/VID voltage is desired

FEATURES

鈥?/div>

2.5A Average Gate Drive Current

Loss-Less Inductor Current Sense

Internal Inductor DCR Temperature Compensation

Programmable Phase Delay

Programmable Feed-Forward Voltage Mode PWM Ramp

Sub 100ns Minimum Pulse Width supports 1MHz per-phase operation

Current Sense Amplifier drives a single wire Average Current Share Bus

Current Share Amplifier reduces PWM Ramp slope to ensure sharing between phases

Body Braking

TM

disables Synchronous MOSFET for improved transient response and prevents negative

output voltage at converter turn-off

Phase Fault Detection

Programmable Phase Over-Temperature Detection

Control FET driver鈥檚 25V input voltage capability simplifies boot-strap supply design

Small thermally enhanced 20L MLPQ package

PACKAGE PINOUT

20

19

17

CSIN-

18

PHSFLT

BIASIN

DACIN

CSIN+

16

1

2

3

4

5

RMPIN+

RMPIN-

HOTSET

VRHOT

ISHARE

SCOMP

EAIN

VCCH

15

14

13

12

11

IR3088A

PHASE

IC

PWMRMP

LGND

VCC

10

GATEH

PGND

GATEL

VCCL

7

6

8

9

Page 1 of 34

9/30

/04

標(biāo)準(zhǔn)包裝
1
類別
集成電路 (IC)
家庭
PMIC - 電源管理 - 專用
系列
XPhase™
應(yīng)用
處理器
電流 - 電源
10mA
電源電壓
8.4 V ~ 14 V
工作溫度
0°C ~ 125°C
安裝類型
表面貼裝
封裝/外殼
20-MLPQ
供應(yīng)商設(shè)備封裝
20-MLPQ（4x4）
包裝
剪切帶 (CT)
其它名稱
*IR3088AMTRIR3088AMCT

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