参数资料
型号: IR3088MPBF
厂商: International Rectifier
文件页数: 1/33页
文件大小: 0K
描述: IC CONTROLLER PHASE 20L-MLPQ
标准包装: 5
系列: XPhase™
应用: 处理器
电流 - 电源: 10mA
电源电压: 8.4 V ~ 14 V
工作温度: 0°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 20-MLPQ
供应商设备封装: 20-MLPQ(4x4)
包装: 剪切带 (CT)
IR3088APbF
DATA SHEET
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
phase of a multiphase converter. The XPhase
architecture results in a power supply that is smaller, less
implement power solutions for the latest high performance CPUs and ASICs. The “Control” IC provides
overall system control and interfaces with any number of “Phase” ICs which each drive and monitor a single
TM
expensive, and easier to design while providing higher efficiency than conventional approaches.
The IR3088A is intended for the following application conditions;
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Excessive impedance between converter and load
Output voltage exceeding the control IC reference/VID voltage is desired
FEATURES
disables Synchronous MOSFET for improved transient response and prevents negative
Body Braking
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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
TM
output voltage at converter turn-off
Phase Fault Detection
Programmable Phase Over-Temperature Detection
Control FET driver’s 25V input voltage capability simplifies boot-strap supply design
Small thermally enhanced 20L MLPQ package
APPLICATION CIRCUIT
VGATE
12V
PHASE FAULT
RCS-
VRHOT
CCS+
DAC
RBIASIN
20k
CCS-
RCS+
BIAS
DBST
CBST
CIN
5 Wire Analog Bus
From Control IC
RAMP
1
2
3
RMPIN+
RMPIN-
HOTSET
IR3088A
PHASE
VCCH
GATEH
PGND
15
14
13
L
VO
ISHARE
4
5
VRHOT
ISHARE
IC
GATEL
VCCL
12
11
CO
CVCCL
RVCC
Page 1 of 33
EA
CSCOMP
RPWMRMP
CVCC
May 18, 2009
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