DATA SHORT To request the full datasheet, please visit www.intersil.com/products/isl6364a ISL6364A FN7922 Rev 0.00 Green Dual 4+1 PWM Controller for VR12/IMVP7 Applications with AUTO Phase April 10, 2012 Shedding The ISL6364A is a dual PWM controller its 4-phase PWMs Features control the microprocessor core or the memory voltage Intel VR12/IMVP7 Compliant regulator, while its single-phase PWM controls the peripheral voltage regulator for graphics, system agent, or processor I/O. - SerialVID with Programmable IMAX, TMAX, BOOT, ADDRESS OFFSET Registers The ISL6364A utilizes Intersils proprietary Enhanced Active ISL6364 Compatible Pulse Positioning (EAPP) modulation scheme to achieve extremely fast transient response with fewer output capacitors. Intersils Proprietary Enhanced Active Pulse Positioning (EAPP) Modulation Scheme (Patented) The ISL6364A is designed to be compliant to Intel VR12/IMVP7 - Variable Frequency Control During Load Transients to specifications. It accurately monitors the load current via the Reduce Beat Frequency Oscillation IMON pin and reports this information via the IOUT register to the microprocessor, which sends a PSI signal to the controller - Linear Control with Evenly Distributed PWM Pulses for at low power mode via SVID bus. The controller enters 1 or Better Phase Current Balance During Load Transients 2-phase operation in low power mode (PSI1) in the ultra low - Voltage Feed-Forward and Adjustable Ramp Options power mode (PSI2,3), it operates in single phase with diode - High Frequency and PSI Compensation Options emulation option. In low power modes, the magnetic core and NVM and Firmware Free for Low Cost and Easy Use switching losses are significantly reduced, yielding high Auto Phase Shedding Option for Greener Environment with efficiency at light load. After the PSI signal is de-asserted, the Boot-refresh Option dropped phase(s) are added back to sustain heavy load Dual Outputs transient response and efficiency. In addition, the ISL6364A features auto-phase shedding to optimize the efficiency from - Output 1 (VR0): 1 to 4-Phase for Core or Memory (Coupled light to full load for Greener Environment without sacrificing Inductor and Phase Doubler, ISL6617/11A Compatible) the transient performance. - Output 2 (VR1): Single Phase for Graphics, System Agent, or Processor I/O (Phase Doubler Compatible, EN = HIGH) Todays microprocessors require a tightly regulated output voltage - Differential Remote Voltage Sensing position versus load current (droop). The ISL6364A senses the output current continuously by measuring the voltage across a - 0.5% Closed-loop System Accuracy Over Load, Line and dedicated current sense resistor or the DCR of the output Temperature 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 Programmable Slew Rate of Fast Dynamic VID for VR0 channel-current balancing, average overcurrent protection and individual phase current limiting. The TM and TMS pins sense an Dynamic VID Compensation (DVC) for VR1 at No Droop NTC thermistors temperature, which is internally digitized for Droop and Diode Emulation Options thermal monitoring and for integrated thermal compensation of Programmable 1 or 2-Phase Operation in PSI1 Mode the current sense elements of the respective regulator. Programmable Standard or Coupled-Inductor Operation The ISL6364A features remote voltage sensing and completely Precision Resistor or DCR Differential Current Sensing eliminates any potential difference between remote and local grounds. This improves regulation and protection accuracy. The - Integrated Programmable Current Sense Resistors threshold-sensitive enable input is available to accurately - Accurate Load-Line (Droop) Programming coordinate the start-up of the ISL6364A with other voltage rails. - Accurate Current Monitoring and Channel-Current Balancing Average Overcurrent Protection and Channel Current Limit With Internal Current Comparators Precision Overcurrent Protection on IMON & IMONS Pins Independent Oscillators, up to 2MHz Per Phase, for Cost, Efficiency, and Performance Optimization Dual Thermal Monitoring and Thermal Compensation Start-up Into Pre-Charged Load Pb-Free (RoHS Compliant) FN7922 Rev 0.00 Page 1 of 2 April 10, 2012ISL6364A Copyright Intersil Americas LLC 2012. 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 FN7922 Rev 0.00 Page 2 of 2 April 10, 2012