DATASHEET ISL6314 FN6455 Rev 2.00 Single-Phase Buck PWM Controller with Integrated MOSFET Drivers for Intel Oct 8, 2009 VR11 and AMD Applications The ISL6314 single-phase PWM control IC provides a Features precision voltage regulation system for advanced Integrated-driver Single-Phase Power Conversion microprocessors. This controller IC maintains the same features as the multi-phase product family, but reduces the Precision Core Voltage Regulation output to a single-phase, for lower current systems. By - Differential Remote Voltage Sensing reducing the number of external parts, this integration is - 0.5% System Accuracy Over-Temperature optimized for a cost and space saving power management - Adjustable Reference-Voltage Offset solution. Optimal Transient Response One outstanding feature of this controller IC is its - Adaptive Phase Alignment (APA) multi-processor compatibility, allowing it to work with both - Active Pulse Positioning (APP) Modulation Intel and AMD microprocessors. Included are programmable Fully Differential, Continuous DCR Current Sensing VID codes for Intel VR11 as well as AMD 5-bit and 6-bit DAC - Accurate Load Line Programming tables. A circuit is provided for remote voltage sensing, compensating for any potential difference between remote Variable Gate Drive Bias: 5V to 12V and local grounds. The output voltage can also be positively Multi-Processor Compatible or negatively offset through the use of a single external - Intel VR11 Mode of Operation resistor. - AMD Mode of Operation Another unique feature of the ISL6314 is the addition of a Microprocessor Voltage Identification Inputs circuit that allows optimizing compensation to be added for - 8-Bit DAC flatter load transient response and well controlled dynamic VID response. - Selectable Between Intel VR11, AMD 5-bit, and AMD 6-bit DAC Tables The ISL6314 also includes advanced control loop features - Dynamic VID Technology for optimal transient response to load apply and removal. Overcurrent Protection One of these features is highly accurate, fully differential, continuous DCR current sensing for load line programming. Multi-tiered Overvoltage Protection Active Pulse Positioning (APP) and Adaptive Phase Digital Soft-Start Alignment (APA) are two other unique features, allowing for quicker initial response to high di/dt load transients the Selectable Operation Frequency up to 1.0MHz number of output bulk capacitors can be reduced, helping to Pb-Free (RoHS compliant) reduce cost. Ordering Information Protection features of this controller IC include a set of PART TEMP. sophisticated overvoltage, undervoltage, and overcurrent NUMBER PART RANGE PACKAGE PKG. protection. Furthermore, the ISL6314 includes protection (Note) MARKING (C) (Pb-free) DWG. against an open circuit on the remote sensing inputs. ISL6314CRZ* ISL6314 CRZ 0 to +70 32 Ld 5x5 QFN L32.5x5B Combined, these features provide advanced protection for the microprocessor and power system. ISL6314IRZ* ISL6314 IRZ -40 to +85 32 Ld 5x5 QFN L32.5x5B *Add -T suffix 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. FN6455 Rev 2.00 Page 1 of 32 Oct 8, 2009ISL6314 Pinout ISL6314 (32 LD QFN) TOP VIEW 32 31 30 29 28 27 26 25 PGOOD 1 24 PHASE SS 2 23 UGATE 3 22 FS BOOT REF 4 21 LGATE 33 GND OFS 5 20 NC 6 19 APA PVCC COMP 7 18 VCC DVC 8 17 EN 9 1011 12 13 1415 16 ISL6314 Integrated Driver Block Diagram PVCC BOOT UGATE 20k PWM SHOOT- GATE PHASE THROUGH CONTROL LOGIC PROTECTION SOFT-START AND 10k FAULT LOGIC LGATE FN6455 Rev 2.00 Page 2 of 32 Oct 8, 2009 FB VID7 VDIFF VID0 RGND VID1 VSEN VID2 OCSET VID3 ISENO VID4 ISEN- VID5 ISEN+ VID6