DATA SHORT
To request the full datasheet, please visit www.intersil.com/products/isl95820 ISL95820
Green Hybrid Digital Four Phase PWM Controller for Intel VR12.5в„ў CPUs FN8318
Rev 1.00
October 15, 2013 Features The ISL95820 Pulse Width Modulation (PWM) controller IC
provides a complete low-cost solution for Intel VR12.5в„ў
compliant microprocessor core power supplies. It provides the
control and protection for a Voltage Regulator (VR). The VR
incorporates 3 integrated drivers and can operate in 4-, 3-, 2or 1-phase configurations. The VR uses a serial control bus to
communicate with the CPU and achieve lower cost and smaller
board area. Serial data bus SMBus/PMBus/I2C interface with SVID conflict free Configurable 4-, 3-, 2-or 1-phase for the output using three
integrated gate drivers Green Hybrid Digital R3в„ў modulator
-Excellent transient response
-Phase shedding with power state selection
-Diode emulation in single-phase for high light-load
efficiency 0.5% system accuracy over-temperature The VR utilizes Intersil’s Robust Ripple Regulator R3
Technologyв„ў. The R3в„ў modulator has many advantages
compared to traditional modulators, including faster transient
response, variable switching frequency in response to load
transients, and improved light load efficiency due to diode
emulation mode with load-dependent low switching frequency. Supports multiple current sensing methods
-Lossless inductor DCR current sensing
-Precision resistor current sensing The ISL95820 has several other key features. It supports …