DATASHEET
To request the full datasheet, please visit www.intersil.com/products/isl95831 3+1 Voltage Regulator for IMVP-7/VR12в„ў CPUs
ISL95831 Features Compliant with IMVP-7/VR12в„ў, 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 two-chip
approach. 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 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. Differential Remote Voltage Sensing Programmable VBOOT Voltage at Start-up Resistor Programmable IMAX, TMAX for Both Outputs 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 …