ISL95857IRTZ Renesas

DATA SHORT To request the full datasheet, please visit www.intersil.com/products/ISL95857 ISL95857 FN8750 Rev 2.00 1+2+1 Voltage Regulator for Intel IMVP8 CPUs February 11, 2016 Compliant with Intel IMVP8, the ISL95857 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) System input power monitor (PSYS) supported outputs. VR A and VR C outputs support 1-phase operation Three output controller only, while VR B is configurable for 2- or 1-phase operation. The - VR A supports 1-phase VR design address options programmable for these three outputs allow - VR B configurable for 2-, 1-phase VR design for maximum flexibility in support of the IMVP8 CPU. All three VRs share a common serial control bus to communicate with the - VR C supports 1-phase VR design CPU and achieve lower cost and smaller board area compared 0.5% system accuracy over temperature with a two-chip approach. Low supply current in PS4 state Based on Intersils Robust Ripple Regulator (R3) technology, Supports multiple current sensing methods the R3 modulator has many advantages compared to traditional modulators. These include faster transient settling - Lossless inductor DCR current sensing time, variable switching frequency in response to load - Precision resistor current sensing transients and improved light-load efficiency due to diode Differential remote voltage sensing emulation mode with load-dependent low switching frequency. Programmable SVID address The ISL95857 has several other key features. The controller Resistor programmable address selection, I and provides PWM outputs, which support Intel DrMOS power MAX switching frequency stages (or similar) and discrete power stages using the Intersil ISL95808 high voltage synchronous rectified buck MOSFET Applications driver. The controller complies with IMVP8 PS4 power requirements and supports power stages and drivers which IMVP8 compliant notebooks, desktops, ultrabooks and are compatible. The ISL95857 supports the system input tablets power monitor (PSYS) option. The controller supports either 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 V = 21V IN 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 FN8750 Rev 2.00 Page 1 of 2 February 11, 2016ISL95857 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 FN8750 Rev 2.00 Page 2 of 2 February 11, 2016