DATASHEET ISL6336, ISL6336A FN6504 Rev 2.00 6-Phase PWM Controller with Light Load Efficiency Enhancement and Current January 15, 2016 Monitoring The ISL6336, ISL6336A controls microprocessor core voltage Features regulation by driving up to 6 interleaved synchronous-rectified Intel VR11.1 Compliant buck channels in parallel. Multiphase buck converter architecture uses interleaved timing to multiply channel ripple Proprietary Active Pulse Positioning and Pin Adaptive frequency and reduce input and output ripple currents. Lower Phase Alignment Modulation Scheme ripple results in fewer components, lower component cost, Proprietary Active Phase Adding and Dropping with Diode reduced power dissipation, and smaller implementation area. Emulation for High Efficiency at Light Load Microprocessor loads can generate load transients with Precision Multiphase Core Voltage Regulation extremely fast edge rates and require high efficiency over - Differential Remote Voltage Sensing the full load range. The ISL6336, ISL6336A utilizes Intersils - 0.5% System Accuracy Over Life, Load, Line and proprietary Active Pulse Positioning (APP) and Adaptive Temperature Phase Alignment (APA) modulation scheme and a - Bi-directional Adjustable Reference-Voltage Offset proprietary active phase dropping/adding and diode Precision Resistor or DCR Current Sensing emulation scheme to achieve extremely fast transient response with fewer output capacitors and high efficiency - Accurate Load-Line Programming from light load to full load. - Accurate Channel-Current Balancing - Accurate Current Monitoring Output Pin (IMON) The ISL6336, ISL6336A is compliant with Intels VR11.1 specification. Features include a pin (IMON) for current Microprocessor Voltage Identification Input monitoring and a Power State Indicator (PSI ) input pin to - Dynamic VID Technology initiate a proprietary phase dropping and diode emulation - 8-Bit VID Input With VR11 Code scheme for higher efficiency at light load by dropping to 1- or Thermal Monitor and OV Protection with OVP Output 2-phase operation with optional diode emulation (ISL6336) to reduce switching and core losses in the converter. After Average Overcurrent Protection and Channel Current Limit the PSI signal is de-asserted, the dropped phase(s) are Precision Overcurrent Protection on IMON pin added back to sustain heavy load transient and efficiency. Integrated Open Sense Line Protection Todays microprocessors require a tightly regulated output Integrated Programmable Temperature Compensation voltage position versus load current (droop). The ISL6336, ISL6336A senses the output current continuously by utilizing 1- to 6-Phase Operation Coupled Inductor Compatible patented techniques to measure the voltage across a Adjustable Switching Frequency up to 1MHz Per Phase dedicated current sense resistor or the DCR of the output inductor. Current sensing provides the needed signals for Package Option precision droop, channel-current balancing, and overcurrent - QFN Compliant to JEDEC PUB95 MO-220 QFN - Quad protection. A programmable integrated temperature Flat No Leads - Product Outline compensation function is implemented to effectively Pb-Free (RoHS Compliant) compensate the temperature variation of the current sense element. A current limit function provides overcurrent protection for the individual phase. A unity gain, differential amplifier is provided for remote voltage sensing and 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 ISL6336, ISL6336A with any other voltage rail. Dynamic-VID technology allows seamless on-the-fly VID changes. The offset pin allows accurate voltage offset settings that are independent of VID setting. FN6504 Rev 2.00 Page 1 of 32 January 15, 2016ISL6336, ISL6336A Ordering Information PART PART TEMP. RANGE PACKAGE PKG. NUMBER MARKING (C) (Pb-Free) DWG. ISL6336CRZ* ISL6336 CRZ 0 to +70 48 Ld 7x7 QFN L48.7x7 ISL6336IRZ* ISL6336 IRZ -40 to +85 48 Ld 7x7 QFN L48.7x7 No longer available or supported ISL6336ACRZ* ISL6336A CRZ 0 to+70 48 Ld 7x7 QFN L48.7x7 ISL6336AIRZ * ISL6336A IRZ -40 to +85 48 Ld 7x7 QFN L48.7x7 No longer available or supported *Add -T for tape and reel. Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. Pinout ISL6336, ISL6336A (48 LD QFN) TOP VIEW 48 47 46 45 44 43 42 41 40 39 38 37 1 36 VID7 PWM3 VID6 2 35 ISEN3- VID5 3 34 ISEN3+ VID4 4 33 ISEN1+ VID3 5 32 ISEN1- VID2 6 31 PWM1 GND VID1 7 30 PWM4 VID0 8 29 ISEN4- 9 28 PSI ISEN4+ 10 27 OFS ISEN2+ 11 26 IMON ISEN2- 12 25 DAC PWM2 13 14 15 16 17 18 19 20 21 22 23 24 FN6504 Rev 2.00 Page 2 of 32 January 15, 2016 REF TM APA VR HOT COMP VR FAN FB VR RDY VDIFF OVP RGND SS VSEN FS TCOMP EN VTT EN PWR VCC ISEN5+ ISEN6+ ISEN5- ISEN6- PWM5 PWM6