Intersil ISL95831 31 voltage regulator for imvp-7/vr12 cpus Datasheet

ISL95831 3+1 Voltage Regulator for IMVP-7/VR12 CPUs
ISL95831
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3+1 Voltage Regulator for IMVP-7/VR12 CPUs
Features Description
Technical Documentation
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Related Devices
Datasheet
ISL95831
3+1 Voltage Regulator for IMVP-7/VR12 CPUs
VIN (min) (V)
VIN (max) (V)
VOUT (min) (V)
VOUT (max) (V)
IOUT (max) (A)
VBIAS (V)
Applications
Max # of outputs
Max # of phases
Droop
Integrated MOSFET Driver
4.5
25
.25
1.52
90
5
VR12/IMVP7
1
3
Y
Y
Product Information
Key Features
Serial Data Bus
Dual Outputs:
Configurable 3-, 2- or 1-phase for the 1st Output using 2 integrated Gate Drivers
1-phase for the 2nd Output using an Integrated Gate Driver
0.5% System Accuracy Over-Temperature
Supports Multiple Current Sensing Methods
Lossless Inductor DCR Current Sensing
Precision Resistor Current Sensing
Differential Remote Voltage Sensing
Programmable VBOOT Voltage at Start-up
Resistor Programmable IMAX, TMAX for Both Outputs
Adaptive Body Diode Conduction Time Reduction
Description
Compliant with IMVP-7/VR12™, the ISL95831 provides a complete solution for microprocessor and graphic processor
core power supply. It provides two Voltage Regulators (VRs) with three integrated gate drivers. The first VR can be
configured as
3-, 2- or 1-phase VR while the second output is 1- phase VR, providing maximum flexibility. The two VRs share the
serial control bus to communicate with the CPU and achieve lower cost and smaller board area compared with the twochip approach.
Based on Intersil’s Robust Ripple Regulator (R3) technology™, the PWM modulator compared to traditional modulators,
has faster transient settling time, variable switching frequency during load transients and has improved light load
efficiency with it’s ability to automatically change switching frequency.
The ISL95831 has several other key features. Both outputs support DCR current sensing with single NTC thermistor for
DCR temperature compensation or accurate resistor current sensing. Both outputs come with remote voltage sense,
programmable VBOOT voltage, programmable IMAX, TMAX, adjustable switching frequency, OC protection and separate
Power-Good.
http://www.intersil.com/products/print.asp?id=ISL95831
11/8/2011
ISL95831 3+1 Voltage Regulator for IMVP-7/VR12 CPUs
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Pricing / Packaging / Samples / Ordering
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Available in RoHS/Pb-Free
Design-In
Status
Temp.
Package
MSL
ISL95831HRTZ
Active
Hi-Temp Comm
48 Ld TQFN
3
ISL95831HRTZ-T
Active
Hi-Temp Comm
48 Ld TQFN T+R
3
ISL95831IRTZ
Active
Ind
48 Ld TQFN
3
ISL95831IRTZ-T
Active
Ind
48 Ld TQFN T+R
3
Part No.
The price listed is the manufacturer's suggested retail price for quantities of 1K units. However, prices
in today's market are fluid and may change without notice.
MSL = Moisture Sensitivity Level - per IPC/JEDEC J-STD-020
SMD = Standard Microcircuit Drawing
Technical Documentation
Datasheet(s):
3+1 Voltage Regulator for IMVP-7/VR12 CPUs
Tools And Support
iSim Design Simulation
iSim:PE Users Guide
Application Block Diagrams
Notebook Computers
Applications
IMVP-7/VR12 Compliant Computers
Related Devices
ISL6353
Multiphase PWM Regulator for VR12 DDR Memory Systems
ISL6363
Multiphase PWM Regulator for VR12™ Desktop CPUs
ISL6364
Dual 4-Phase + 1-Phase PWM Controller for VR12/IMVP7 Applications
ISL6364C
Dual 4-Phase + 1-Phase PWM Controller for VR12 Desktop Applications
ISL6366
Dual 6-Phase + 1-Phase PWM Controller for VR12/IMVP7 Applications
ISL95835
3+1 and 1+1 Voltage Regulator for IMVP-7/VR12™ CPUs
ISL95837
3+1 and 1+1 Voltage Regulator for IMVP-7/VR12™ CPUs
Parametric Table
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http://www.intersil.com/products/print.asp?id=ISL95831
11/8/2011
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