Data Short ISL95812 (Intersil)

DATA SHORT To request the full datasheet, please visit www.intersil.com/products/isl95812 ISL95812 FN8380 Multiphase PWM Regulator for VR12.5, VR12.6 and VR12.6+ CPUs Rev 0.00 March 5, 2013 Fully compliant with Intel VR12.5, VR12.6 and VR12.6+™ Features specifications, the ISL95812 provides a complete solution for microprocessor core power supply. It provides a Voltage • Serial data bus Regulator (VR) with two integrated and one external gate • Output configurable 3-, 2- or 1-phase using two integrated drivers. The VR can be configured as 3-, 2- or 1-phase, gate drivers providing maximum flexibility. The VR uses the serial control bus (SVID) to communicate with the CPU and achieves lower cost and • Precision core voltage regulation smaller board area. - 0.5% system accuracy over-temperature - Enhanced load line accuracy Based on Intersil’s Robust Ripple Regulator (R3) technology™, the PWM modulator compared to traditional modulators, has • Supports multiple current sensing methods faster transient settling time, variable switching frequency - Lossless inductor DCR current sensing during load transients and has improved light load efficiency - Precision resistor current sensing with its ability to automatically change switching frequency. • Differential remote voltage sensing The ISL95812 has several other key features. The output • Programmable VBOOT voltage at start-up supports DCR current sensing with single NTC thermistor for DCR temperature compensation or accurate resistor current • Resistor programmable ICCMAX and voltage transition sensing. The output comes with remote voltage sense, slew rate programmable VBOOT voltage, programmable ICCMAX, • Adaptive body diode conduction time reduction programmable voltage transition slew rate, adjustable switching frequency, overcurrent protection and Power-Good Applications output. • Notebook computers • Desktop computers
1.80 1.79 1.78 1.77 ) (V 1.76 VIN = 8.5V T OU 1.75 V 1.74 VIN = 19V 1.73 1.72 VIN = 12V 1.71 0 5 10 15 20 25 30 35 40 45 50 55 60 IOUT (A)
FIGURE 1. LOAD LINE REGULATION FN8380 Rev 0.00 Page 1 of 2 March 5, 2013