DATASHEET
To request the full datasheet, please visit www.intersil.com/products/is95838 Dual 3+2 PWM Controller for IMVP-7/VR12в„ў CPUs
ISL95838 Features The ISL95838 Pulse Width Modulation (PWM) controller IC
provides a complete solution for IMVP-7/VR12в„ў compliant
microprocessor and graphic processor core power supplies. It
provides the control and protection for two Voltage Regulators
(VRs). The first VR, typical for Vcore, incorporates 2 integrated
drivers and can operate in 3-, 2-or 1-phase configurations. The
second VR, typical for Graphics, can operate in 2-or 1-phase
configurations. The two VRs share a 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 two
integrated Gate Drivers
-Configurable 2-or 1-phase for the 2nd Output R3 Modulator
-Excellent Transient Response
-High Light Load Efficiency 0.5% System Accuracy Over-Temperature Both VRs utilize Intersil’s Robust Ripple Regulator R3
Technologyв„ў. The R3 modulator has numerous advantages
compared to traditional modulators, including faster transient
response, variable switching frequency during load transients,
and improved light load efficiency due to its ability to
automatically change switching frequency. Supports Multiple Current Sensing Methods
-Lossless Inductor DCR Current Sensing …
