DATA SHORT To request the full datasheet, please visit www.intersil.com/products/ISL6364 ISL6364 FN6861 Rev 2.00 Dual 4-Phase + 1-Phase PWM Controller for VR12/IMVP7 Applications August 27, 2013 The ISL6364 is a dual PWM controller its 4-phase PWMs control Features the microprocessor core or the memory voltage regulator, while Intel VR12/IMVP7 Compliant its single-phase PWM controls the peripheral voltage regulator - SerialVID with Programmable IMAX, TMAX, BOOT, for graphics, system agent, or processor I/O. ADDRESS OFFSET Registers The ISL6364 utilizes Intersils proprietary Enhanced Active Pulse Intersils Proprietary Enhanced Active Pulse Positioning Positioning (EAPP) modulation scheme to achieve extremely (EAPP) Modulation Scheme (Patented) fast transient response with fewer output capacitors. - Variable Frequency Control During Load Transients to The ISL6364 is designed to be compliant to Intel VR12/IMVP7 Reduce Beat Frequency Oscillation specifications. It accurately monitors the load current via the - Linear Control with Evenly Distributed PWM Pulses for IMON pin and reports this information via the IOUT register to Better Phase Current Balance During Load Transients the microprocessor, which sends a PSI signal to the controller - Voltage Feed-Forward and Adjustable Ramp Options at low power mode via SVID bus. The controller enters 1 or - High Frequency and PSI Compensation Options 2-phase operation in low power mode (PSI1) in the ultra low Dual Outputs power mode (PSI2,3), it operates in single phase with diode - Output 1 (VR0): 1 to 4-Phase for Core or Memory (Coupled emulation option. In low power modes, the magnetic core and Inductor Compatible) switching losses are significantly reduced, yielding high - Output 2 (VR1): Single Phase for Graphics, System Agent, efficiency at light load. After the PSI signal is de-asserted, the dropped phase(s) are added back to sustain heavy load or Processor I/O transient response and efficiency. - Differential Remote Voltage Sensing - 0.5% Closed-loop System Accuracy Over Load, Line and Todays microprocessors require a tightly regulated output voltage Temperature position versus load current (droop). The ISL6364 senses the - Phase Doubler Compatibility (NOT Phase Dropping via output current continuously by measuring the voltage across a PWM Lines) dedicated current sense resistor or the DCR of the output inductor. The sensed current flows out of the FB pin to develop a Proprietary Active Phase Adding and Dropping with Diode precision voltage drop across the feedback resistor for droop Emulation Scheme For Enhanced Light Load Efficiency control. Current sensing also provides information for channel- Programmable Slew Rate of Fast Dynamic VID for VR0 current balancing, average overcurrent protection and individual Dynamic VID Compensation (DVS) for VR1 at No Droop phase current limiting. The TM and TMS pins sense an NTC thermistors temperature, which is internally digitized for thermal Droop and Diode Emulation Options monitoring and for integrated thermal compensation of the Programmable 1 or 2-Phase Operation in PSI1/2/3 Mode current sense elements of the respective regulator. Programmable Standard or Coupled-Inductor Operation The ISL6364 features remote voltage sensing and completely Precision Resistor or DCR Differential Current Sensing eliminates any potential difference between remote and local - Integrated Programmable Current Sense Resistors grounds. This improves regulation and protection accuracy. The - Integrated Thermal Compensation threshold-sensitive enable input is available to accurately - Accurate Load-Line (Droop) Programming coordinate the start-up of the ISL6364 with other voltage rails. - Accurate Channel-Current Balancing - Accurate Current Monitoring Average Overcurrent Protection and Channel Current Limit With Internal Current Comparators Precision Overcurrent Protection on IMON & IMONS Pins 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) FN6861 Rev 2.00 Page 1 of 2 August 27, 2013 NOT RECOMMENDED FOR NEW DESIGNS NO RECOMMENDED REPLACEMENT contact our Technical Support Center at 1-888-INTERSIL or www.intersil.com/tscISL6364 Copyright Intersil Americas LLC 2010-2013. 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 FN6861 Rev 2.00 Page 2 of 2 August 27, 2013