DATASHEET ISL6266, ISL6266A FN6398 Rev 4.00 Two-phase Core Controllers (Montevina, IMVP-6+) August 25, 2015 The ISL6266 and ISL6266A are two-phase buck converter Features regulators implementing Intel IMVP-6 protocol with Precision Two/One-phase CORE Voltage Regulator embedded gate drivers. Both converters use interleaved - 0.5% System Accuracy Over-Temperature channels to double the output voltage ripple frequency and - Enhanced Load Line Accuracy thereby reduce output voltage ripple amplitude with fewer components, lower component cost, reduced power Internal Gate Driver with 2A Driving Capability dissipation, and smaller real estate area. Dynamic Phase Adding/Dropping 3 The ISL6266A utilizes the patented R Technology, Microprocessor Voltage Identification Input Intersils Robust Ripple Regulator modulator. Compared with 3 - 7-Bit VID Input traditional multiphase buck regulators, the R Technology - 0.300V to 1.500V in 12.5mV Steps 3 has the fastest transient response. This is due to the R - Support VID Change On-the-Fly modulator commanding variable switching frequency during load transient events. Multiple Current Sensing Schemes Supported - Lossless Inductor DCR Current Sensing Intel Mobile Voltage Positioning (IMVP) is a smart voltage - Precision Resistive Current Sensing regulation technology, which effectively reduces power dissipation in Intel Pentium processors. To boost battery life, CPU Power Monitor the ISL6266A supports DPRSLRVR (deeper sleep), Thermal Monitor DPRSTP and PSI functions, which maximizes efficiency by enabling different modes of operation. In active mode User Programmable Switching Frequency (heavy load), the regulator commands the two phase Differential Remote CPU Die Voltage Sensing continuous conduction mode (CCM) operation. When PSI is asserted in active mode (medium load), the ISL6266A Static and Dynamic Current Sharing operates in one-phase CCM. When the CPU enters deeper Support All Ceramic Output with Coupled Inductor sleep mode, the ISL6266A enables diode emulation to (ISL6266) maximize efficiency. Overvoltage, Undervoltage and Overcurrent Protection For better system power management, the ISL6266A Pb-Free (RoHS Compliant) provides a CPU power monitor output. The analog output at the power monitor pin can be fed into an A/D converter to Ordering Information report instantaneous or average CPU power. TEMP. A 7-bit digital-to-analog converter (DAC) allows dynamic PART NUMBER PART RANGE PACKAGE PKG. adjustment of the core output voltage from 0.300V to 1.500V. (Note) MARKING (C) (Pb-free) DWG. Over-temperature, the ISL6266A achieves a 0.5% system ISL6266HRZ ISL6266 HRZ -10 to +100 48 Ld 7x7 QFN L48.7x7 accuracy of core output voltage. (No longer available or A unity-gain differential amplifier is provided for remote CPU supported) die sensing. This allows the voltage on the CPU die to be ISL6266HRZ-T* ISL6266 HRZ -10 to +100 48 Ld 7x7 QFN L48.7x7 accurately measured and regulated per Intel IMVP-6+ (No longer specifications. Current sensing can be realized using either available or lossless inductor DCR sensing or discrete resistor sensing. supported) A single NTC thermistor network thermally compensates the ISL6266AIRZ ISL6266A IRZ -40 to +100 48 Ld 7x7 QFN L48.7x7 gain and the time constant of the DCR variations. ISL6266AIRZ-T* ISL6266A IRZ -40 to +100 48 Ld 7x7 QFN L48.7x7 The ISL6266 also includes all the functions for IMVP-6+ *Please refer to TB347 for details on reel specifications. core power delivery. In addition, it has been optimized for NOTE: These Intersil Pb-free plastic packaged products employ special use with coupled-inductor solutions. More information on the Pb-free material sets, molding compounds/die attach materials, and differences between ISL6266 and ISL6266A can be found in 100% matte tin plate plus anneal (e3 termination finish, which is RoHS the Electrical Specifications on page 3 and the ISL6266 compliant and compatible with both SnPb and Pb-free soldering Features on page 21. 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. FN6398 Rev 4.00 Page 1 of 31 August 25, 2015ISL6266, ISL6266A Pinout ISL6266, ISL6266A (48 LD 7x7 QFN) TOP VIEW 48 47 46 45 44 43 42 41 40 39 38 37 1 36 PGOOD BOOT1 2 35 PSI UGATE1 3 34 PMON PHASE1 4 33 RBIAS PGND1 VR TT 5 32 LGATE1 6 31 NTC PVCC GND PAD (BOTTOM) 7 30 SOFT LGATE2 8 29 OCSET PGND2 VW PHASE2 9 28 COMP UGATE2 10 27 FB 11 26 BOOT2 FB2 12 25 NC 13 14 15 16 17 18 19 20 21 22 23 24 FN6398 Rev 4.00 Page 2 of 31 August 25, 2015 VDIFF 3V3 VSEN CLK EN RTN DPRSTP DROOP DPRSLPVR DFB VR ON VO VID6 VSUM VID5 VIN VID4 VID3 GND VID2 VDD VID1 ISEN2 VID0 ISEN1