DATA SHORT To request the full datasheet, please visit www.intersil.com/products/isl95824 ISL95824 FN8740 Rev 0.00 4+2 Multiphase PWM Regulator for Intel IMVP8 Desktop CPUs May 18, 2015 Compliant with Intel IMVP8, the ISL95824 provides a Features complete power solution for desktop microprocessors Supports Intel serial data bus interface supporting both the core (IA) and graphics (GT) rails. The 2 controller provides control and protection for one voltage SMBus/PMBus/I C interface with SVID conflict free regulator (VR), which can be configured for 4-, 3-, 2- or 1-phase Green hybrid digital R3 modulator operation. The second VR is configurable for 2- or 1-phase - Excellent transient response operation. The VRs feature a programmable SVID address to - Phase shedding with power state selection allow maximum flexibility in supporting desktop processor SKUs. - Diode emulation in single-phase for high light load Both controller outputs share a common serial control bus to efficiency communicate with the CPU and achieve lower cost and smaller board area compared with a two-chip approach. Dual output controller - Voltage regulator A: 4-, 3-, 2- or 1-phase designs with two Based on Intersils Robust Ripple Regulator R3 Technology, +12V integrated gate drivers the R3 modulator has many advantages compared to traditional modulators. These include faster transient settling - Voltage regulator B: 2- or 1-phase designs with one +12V time, variable switching frequency in response to load integrated gate driver transients and improved light load efficiency due to diode 0.5% system accuracy over-temperature emulation mode with load-dependent low switching frequency. Supports multiple current sensing methods The ISL95824 has several other key features. The controller - Lossless inductor DCR current sensing features three integrated +12V gate drivers with two drivers on - Precision resistor current sensing the VR B output. The controller supports either DCR current sensing with a single NTC thermistor for DCR temperature Differential remote voltage sensing compensation or more precision through resistor current Resistor programmable address selection, I and MAX sensing if desired. Both outputs feature remote voltage sense, switching frequency for both outputs programmable I , adjustable switching frequency, OC MAX Adaptive body diode conduction time reduction protection and single VR READY power-good indicator. Applications IMVP8 compliant desktops 100 100 90 90 80 80 PS1 PS0 PS0 PS2 PS1 70 70 PS2/3 60 60 50 50 40 40 0 102030 405060 708090 0 5 10 15 20 25 30 35 LOAD CURRENT (A) LOAD CURRENT (A) FIGURE 1. VR A EFFICIENCY vs LOAD FIGURE 2. VR B EFFICIENCY vs LOAD FN8740 Rev 0.00 Page 1 of 2 May 18, 2015 EFFICIENCY (%) EFFICIENCY (%) ISL95824 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 FN8740 Rev 0.00 Page 2 of 2 May 18, 2015