DATA SHORT To request the full datasheet, please visit www.intersil.com/products/ISL95855C ISL95855C FN8969 Rev.0.00 3+2+1 Voltage Regulator With Expanded Iccmax Register Range Supporting Oct 16, 2017 IMVP8 CFL/CNL CPUs The ISL95855C is compliant with IMVP8, and Features provides a complete power solution for Intel Supports Intel serial data bus interface microprocessors supporting core, graphics, and system Fully supports PS4 power domain entry and exit agent rails. The controller provides control and protection for three Voltage Regulator (VR) outputs. The Supports system input power monitor (PSYS) VR A output can be configured for 3-, 2-, or 1-phase Three output controller 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 options for these three outputs allow for VR B configurable for 2-, 1-phase VR design maximum flexibility to support the IMVP8 CPU. All VR C supports 1-phase VR design three VRs share a common serial control bus to 0.5% system accuracy over temperature communicate with the CPU and achieve lower cost and smaller board area compared with a two-chip approach. The Low supply current in PS4 state ISL95855C has expanded Iccmax register tables for VR A Supports multiple current sensing methods and VR C to support Intel CFL-H. Lossless inductor DCR current sensing Based on Intersils Robust Ripple Regulator (R3) Precision resistor current sensing technology, the R3 modulator has many advantages Differential remote voltage sensing compared to traditional modulators. These include faster transient settling time, variable switching frequency in Programmable SVID address response to load transients, and improved light-load Programmable V voltage at start-up BOOT efficiency due to diode emulation mode with Resistor programmable address selection, I , slew load-dependent low switching frequency. MAX rate, switching frequency, and droop The ISL95855C has several other key features. The Adaptive body diode conduction time reduction controller provides PWM outputs, which support Intel DrMOS power stages (or similar) and discrete power Applications stages using the Intersil ISL95808 high voltage IMVP8 compliant notebooks, desktops, Ultrabooks, synchronous rectified buck MOSFET driver. The and tablets controller complies with IMVP8 PS4 power requirements and supports compatible power stages and Supports higher Iccmax range of CFL-H CPUs drivers. The controller supports DCR current sensing Related Literature with a single NTC thermistor for DCR temperature For a full list of related documents, visit our website compensation, or more precision through resistor current sensing. ISL95855C product page 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 FN8969 Rev.0.00 Page 1 of 2 Oct 16, 2017 V (V) OUTISL95855C Copyright Intersil Americas LLC 2017. 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 FN8969 Rev.0.00 Page 2 of 2 Oct 16, 2017