DATASHEET To request the full datasheet, please visit www.intersil.com/products/isl95818 3-Phase PWM Controller for VR12.5 and VR12.6+ CPUs ISL95818 Features Fully compliant with Intel VR12.5 and VR12.6+ specifications, the ISL95818 provides a complete solution for microprocessor core power supply. It provides a Voltage Regulator (VR) with two integrated and one external gate drivers. The VR can be configured as 3-, 2- or 1-phase, providing maximum flexibility. The VR uses the serial control bus to communicate with the CPU and achieves lower cost and smaller board area. • Serial data bus • Output configurable 3-, 2- or 1-phase using two integrated gate drivers • Precision core voltage regulation - 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 faster transient settling time, variable switching frequency during load transients and has improved light load efficiency with its ability to automatically change switching frequency. • Supports multiple current sensing methods - Lossless inductor DCR current sensing - Precision resistor current sensing • Differential remote voltage sensing • Programmable VBOOT voltage at start-up • Resistor programmable ICCMAX and voltage transition slew rate The ISL95818 has several other key features. The output supports DCR current sensing with single NTC thermistor for DCR temperature compensation or accurate resistor current sensing. The output comes with remote voltage sense, programmable VBOOT voltage, programmable ICCMAX, programmable voltage transition slew rate, adjustable switching frequency, overcurrent protection and Power-Good output. • Adaptive body diode conduction time reduction Applications • Notebook computers • Desktop computers 1.80 1.79 1.78 VIN = 12V 1.77 VOUT (V) VIN = 19V 1.76 VIN = 8.5V 1.75 1.74 1.73 1.72 1.71 0 5 10 15 20 25 30 35 IOUT (A) 40 45 50 55 60 FIGURE 1. LOAD LINE REGULATION March 19, 2013 FN8428.1 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2013. All Rights Reserved Intersil (and design) and R3 Technology are trademarks owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. ISL95818 For additional products, see www.intersil.com/en/products.html Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted in the quality certifications found at www.intersil.com/en/support/qualandreliability.html Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com Submit Document Feedback 2 FN8428.1