NOT RECOMM ENDED FOR N EW DESIGNS NO RECOMME NDED REPLAC EMENT contact our Te chnical Suppor t Center at 1-888-INTERSIL To request the full datasheet, please visit www.intersil.com/products/ISL6364C or www.inters il.com/tsc DATASHEET Dual 4-Phase + 1-Phase PWM Controller for VR12 Desktop Applications ISL6364C Features The ISL6364C is a dual PWM controller; its 4-phase PWMs control the microprocessor core or the memory voltage regulator, while its single-phase PWM controls the peripheral voltage regulator for graphics, system agent, or processor I/O. • Support Intel VR12 for 0/1 Address - SerialVID with Programmable IMAX, TMAX, and BOOT Registers The ISL6364C utilizes Intersil’s proprietary Enhanced Active Pulse Positioning (EAPP) modulation scheme to achieve extremely fast transient response with fewer output capacitors. The ISL6364C is designed to support Intel VR12 Desktop specifications. It accurately monitors the load current via the IMON pin and reports this information via the IOUT register to the microprocessor, which sends a PSI# signal to the controller at low power mode via SVID bus. The controller enters 1 or 2-phase operation in low power mode. In low power modes, the magnetic core and switching losses are significantly reduced, yielding high efficiency at light load. After the PSI# signal is de-asserted, the dropped phase(s) are added back to sustain heavy load transient response and efficiency. Today’s microprocessors require a tightly regulated output voltage position versus load current (droop). The ISL6364C senses the output current continuously by measuring the voltage across a dedicated current sense resistor or the DCR of the output inductor. The sensed current flows out of the FB pin to develop a precision voltage drop across the feedback resistor for droop control. Current sensing also provides information for channel-current balancing, average overcurrent protection and individual phase current limiting. The TM and TMS pins sense an NTC thermistor’s temperature, which is internally digitized for thermal monitoring and for integrated thermal compensation of the current sense elements of the respective regulator. The ISL6364C features remote voltage sensing and completely eliminates any potential difference between remote and local grounds. This improves regulation and protection accuracy. The threshold-sensitive enable input is available to accurately coordinate the start-up of the ISL6364C with other voltage rails. • Intersil’s Proprietary Enhanced Active Pulse Positioning (EAPP) Modulation Scheme (Patented) - Variable Frequency Control During Load Transients to Reduce Beat Frequency Oscillation - Linear Control with Evenly Distributed PWM Pulses for Better Phase Current Balance During Load Transients - Voltage Feed-Forward and Adjustable Ramp Options - High Frequency and PSI Compensation Options • Dual Outputs - Output 1 (VR0): 1 to 4-Phase for Core or Memory - Output 2 (VR1): Single Phase for Graphics, System Agent, or Processor I/O - Differential Remote Voltage Sensing - ±0.5% Closed-loop System Accuracy Over Load, Line and Temperature • Proprietary Active Phase Adding and Dropping Scheme For Enhanced Light Load Efficiency • Droop Option • Programmable 1 or 2-Phase Operation in Low Power Mode • Precision Resistor or DCR Differential Current Sensing - Integrated Programmable Current Sense Resistors - Integrated Thermal Compensation - Accurate Load-Line (Droop) Programming - Accurate Channel-Current Balancing - Accurate Current Monitoring • Average Overcurrent Protection and Channel Current Limit With Internal Current Comparators • Independent Oscillators, up to 1MHz Per Phase, for Cost, Efficiency, and Performance Optimization • Dual Thermal Monitoring and Thermal Compensation • Start-up Into Pre-Charged Load • Pb-Free (RoHS Compliant) • Not Controlled by Intersil Standard PCN Process August 7, 2013 FN7723.1 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2011, 2013. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. ISL6364C 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 Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets 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 Submit Document Feedback 2 FN7723.1 August 7, 2013