DATA SHORT To request the full datasheet, please visit www.intersil.com/products/isl95855 ISL95855 FN8741 Rev 0.00 3+2+1 Voltage Regulator for IMVP8 CPUs June 16, 2015 Compliant with IMVP8, the ISL95855 provides a complete Features power solution for Intel microprocessors supporting core, Support Intel serial data bus interface graphics and system agent rails. The controller provides control and protection for three Voltage Regulator (VR) System input power monitor (PSYS) supported outputs. The VR A output can be configured for 3-, 2- or Three output controller 1-phase operation. VR B is configurable for 2- or 1-phase - VR A configurable for 3-, 2-, 1-phase VR design operation and VR C supports 1-phase operation. The address - VR B configurable for 2-, 1-phase VR design options programmable for these three outputs allow for - VR C supports 1-phase VR design maximum flexibility in support of the IMVP8 CPU. All three VRs share a common serial control bus to communicate with the 0.5% system accuracy over temperature CPU and achieve lower cost and smaller board area compared Low supply current in PS4 state with a two-chip approach. Supports multiple current sensing methods Based on Intersils Robust Ripple Regulator (R3) technology, - Lossless inductor DCR current sensing the R3 modulator has many advantages compared to - Precision resistor current sensing traditional modulators. These include faster transient settling time, variable switching frequency in response to load Differential remote voltage sensing transients and improved light-load efficiency due to diode Programmable SVID address emulation mode with load-dependent low switching frequency. Programmable V voltage at start-up BOOT The ISL95855 has several other key features. The controller Resistor programmable address selection, I , slew rate, provides PWM outputs, which support Intel DrMOS power MAX switching frequency and droop stages (or similar) and discrete power stages using the Intersil ISL95808 high voltage synchronous rectified buck MOSFET Adaptive body diode conduction time reduction driver. The controller complies with IMVP8 PS4 power requirements and supports power stages and drivers which Applications are compatible. The ISL95855 supports the system input IMVP8 compliant notebooks, desktops, ultrabooks and power monitor (PSYS) option. The controller supports either tablets DCR current sensing with a single NTC thermistor for DCR temperature compensation, or more precision through resistor current sensing if desired. All three outputs feature remote voltage sense, programmable I , adjustable switching MAX frequency, OC protection and a single VR READY power-good indicator. 0.91 V = 19V IN 0.90 0.89 0.88 0.87 0.86 0.85 0.84 0.83 V = 12V IN 0.82 V = 8V IN 0.81 0.80 0612 18 24 30 36 42 48 54 60 66 I (A) OUT FIGURE 1. LOAD LINE REGULATION FN8741 Rev 0.00 Page 1 of 2 June 16, 2015 V (V) OUTISL95855 Copyright Intersil Americas LLC 2015. All Rights Reserved. All trademarks and registered trademarks are the property of their respective owners. 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 may modify the circuit design and/or specifications of products at any time without notice, provided that such modification does not, in Intersil s sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets 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 FN8741 Rev 0.00 Page 2 of 2 June 16, 2015