Dual 3+1 PWM Controller with Current Monitor for IMVP-7/VR12™ CPUs
ISL95839
The ISL95839 Pulse Width Modulation (PWM) controller IC provides a complete solution for IMVP-7/VR12™ 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, incorporates 1 integrated driver.
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.
Both VRs utilize Intersil’s Robust Ripp...