DATA SHORT To request the full datasheet, please visit www.intersil.com/products/ISL95857A ISL95857A FN8856 Rev 0.00 1+2+1 Voltage Regulator for Intel IMVP8 CPUs May 4, 2016 Compliant with Intel IMVP8, the ISL95857A provides a Features complete power solution for Intel microprocessors supporting Supports Intel serial data bus interface core, graphics and system agent rails. The controller provides control and protection for three Voltage Regulator (VR) - PS4 Power Domain entry/exit fully supported outputs. VR A and VR C outputs support 1-phase operation System input power monitor (PSYS) supported only, while VR B is configurable for 2- or 1-phase operation. The Three output controller address options programmable for these three outputs allow for maximum flexibility in support of the IMVP8 CPU. All three - VR A supports 1-phase VR design VRs share a common serial control bus to communicate with the - VR B configurable for 2-, 1-phase VR design CPU and achieve lower cost and smaller board area compared - VR C supports 1-phase VR design with a two-chip approach. 0.5% system accuracy over temperature Based on Intersils Robust Ripple Regulator (R3) technology, Low supply current in PS4 state the R3 modulator has many advantages compared to traditional modulators. These include faster transient settling Supports multiple current sensing methods time, variable switching frequency in response to load - Lossless inductor DCR current sensing transients and improved light-load efficiency due to diode - Precision resistor current sensing emulation mode with load-dependent low switching frequency. Differential remote voltage sensing The ISL95857A has several other key features. The controller Programmable SVID address provides PWM outputs, which support Intel DrMOS power stages (or similar) and discrete power stages using the Intersil Resistor programmable address selection, I and MAX ISL95808 high voltage synchronous rectified buck MOSFET switching frequency driver. The controller complies with IMVP8 PS4 power requirements and supports power stages and drivers which Applications are compatible. The ISL95857A 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 0.91 0.91 0.90 0.90 0.90 0.89 0.89 0.89 0.88 V = 12V V = 12V IN IN V = 12V IN 0.88 0.88 0.87 V = 6V V = 6V IN IN V = 6V IN V = 21V V = 21V IN 0.86 0.87 IN 0.87 V = 21V IN 0.85 0.86 0.86 0.84 0.85 0.85 0.83 0.84 0.82 0.84 0 5 10 15 20 25 0 5 10 15 20 25 30 35 40 0123456 FIGURE 1C. VSA/VR C LOAD LINE = 10.3m FIGURE 1A. V /VR A LOAD LINE = 2.4m FIGURE 1B. VGT/VR B LOAD LINE = 2m CORE FIGURE 1. LOAD LINE REGULATION FN8856 Rev 0.00 Page 1 of 2 May 4, 2016ISL95857A Copyright Intersil Americas LLC 2016. 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 FN8856 Rev 0.00 Page 2 of 2 May 4, 2016