DATA SHORT To request the full datasheet, please visit www.intersil.com/products/isl6366 ISL6366 FN6964 Rev 1.00 Dual 6-Phase + 1-Phase PWM Controller for VR12/IMVP7 Applications February 25, 2011 The ISL6366 is a dual PWM controller its 6-phase PWMs control Features the microprocessor core or memory voltage regulator, while its Intel VR12/IMVP7 Compliant single-phase PWM controls the peripheral voltage regulator for - SerialVID with Programmable IMAX, TMAX, BOOT, graphics, system agent, or processor I/O. ADDRESS OFFSET Registers The ISL6366 utilizes Intersils proprietary Enhanced Active Pulse Intersils Proprietary Enhanced Active Pulse Positioning Positioning (EAPP) modulation scheme to achieve extremely fast (EAPP) Modulation Scheme (Patented) transient response with fewer output capacitors. - Variable Frequency Control During Load Transients to The ISL6366 is designed to be compliant to Intel VR12/IMVP7 Reduce Beat Frequency Oscillation specifications. It accurately monitors the load current via the IMON pin and reports this information via the IOUT register to - Linear Control with Evenly Distributed PWM Pulses for the microprocessor, which sends a PSI signal to the controller Better Phase Current Balance During Load Transients at low power mode via SVID bus. The controller enters 1 or - Voltage Feed-Forward and Adjustable Ramp Options 2-phase operation in low power mode (PSI1) in the ultra low - High Frequency and PSI Compensation Options power mode (PSI2,3), it operates in single phase with diode Dual Outputs emulation option. In low power modes, the magnetic core and - Output 1 (VR0): 1 to 6-Phase for Core or Memory (Coupled switching losses are significantly reduced, yielding high Inductor Compatible) efficiency at light load. After the PSI signal is de-asserted, the dropped phase(s) are added back to sustain heavy load - Output 2 (VR1): Single Phase for Graphics, System Agent, or Processor I/O transient response and efficiency. - Differential Remote Voltage Sensing Todays microprocessors require a tightly regulated output voltage - 0.5% Closed-loop System Accuracy Over Load, Line and position versus load current (droop). The ISL6366 senses the Temperature output current continuously by measuring the voltage across a - Phase Doubler Compatibility (NOT Phase Dropping via dedicated current sense resistor or the DCR of the output PWM Lines) inductor. The sensed current flows out of the FB pin to develop a precision voltage drop across the feedback resistor for droop Proprietary Active Phase Adding and Dropping with Diode control. Current sensing also provides information for channel- Emulation Scheme For Enhanced Light Load Efficiency current balancing, average overcurrent protection and individual Programmable Slew Rate of Fast Dynamic VID with phase current limiting. The TM and TMS pins sense an NTC Dynamic VID Compensation (DVC) for VR0 thermistors temperature, which is internally digitized for thermal Dynamic VID Compensation (DVS) for VR1 at No Droop monitoring and for integrated thermal compensation of the current sense elements of the respective regulator. Droop and Diode Emulation Options Programmable 1 or 2-Phase Operation in PSI1/2/3 Mode The ISL6366 features remote voltage sensing and completely eliminates any potential difference between remote and local Programmable Standard or Coupled-Inductor Operation grounds. This improves regulation and protection accuracy. The Precision Resistor or DCR Differential Current Sensing threshold-sensitive enable input is available to accurately - Integrated Programmable Current Sense Resistors coordinate the start-up of the ISL6366 with other voltage rails. - 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 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) FN6964 Rev 1.00 Page 1 of 2 February 25, 2011ISL6366 Copyright Intersil Americas LLC 2011. 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 FN6964 Rev 1.00 Page 2 of 2 February 25, 2011