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IR3086MTR Datasheet

  • IR3086MTR

  • PHASE IC WITH OVP, FAULT AND OVERTEMP DETECT

  • 410.29KB

  • 15頁(yè)

  • IRF

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IR3086
PRELIMINARY DATA SHEET
XPHASE
TM
PHASE IC WITH OVP, FAULT AND OVERTEMP DETECT
DESCRIPTION
The IR3086 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.
FEATURES
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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
Body Braking
TM
disables Synchronous MOSFET for improved transient response and prevents negative
output voltage at converter turn-off
OVP comparator with 150ns response
Phase Fault Detection
Programmable Phase Over-Temperature Detection
Small thermally enhanced 20L MLPQ package
PACKAGE PINOUT
19
20
18
17
CSIN-
1
2
3
4
5
PHSFLT
BIASIN
DACIN
CSIN+
16
RMPIN+
RMPIN-
HOTSET
VRHOT
ISHARE
SCOMP
EAIN
VCCH
15
14
13
12
11
IR3086
PHASE
IC
PWMRMP
LGND
VCC
10
GATEH
PGND
GATEL
VCCL
6
7
8
Page 1 of 15
9
9/1/03

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