DATASHEET ISL6262 FN9199 Rev 2.00 Two-Phase Core Regulator for IMVP-6 Mobile CPUs May 15, 2006 The ISL6262 is a two-phase buck converter regulator Features implementing Intel IMVP-6 protocol, with embedded gate Precision Two-phase CORE Voltage Regulator drivers. The two-phase buck converter uses two interleaved - 0.5% System Accuracy Over Temperature channels to effectively double the output voltage ripple - Enhanced Load Line Accuracy frequency and thereby reduce output voltage ripple amplitude with fewer components, lower component cost, Internal Gate Driver with 2A Driving Capability reduced power dissipation, and smaller real estate area. Dynamic Phase Adding/Dropping 3 The heart of the ISL6262 is R Technology, Intersils Microprocessor Voltage Identification Input Robust Ripple Regulator modulator. Compared with the 3 - 7-Bit VID Input traditional multiphase buck regulator, 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 a load transient. 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, Thermal Monitor the ISL6262 supports DPRSLRVR (deeper sleep), User Programmable Switching Frequency DPRSTP and PSI functions and maximizes the efficiency via automatically enabling different phase operation modes. Differential Remote CPU Die Voltage Sensing At heavy load operation of the active mode, the regulator Static and Dynamic Current Sharing commands the two phase continuous conduction mode (CCM) operation. While the PSI is asserted at the medium Overvoltage, Undervoltage, and Overcurrent Protection load in the active mode, the ISL6262 smoothly disables one Pb-Free Plus Anneal Available (RoHS Compliant) phase and operates in a one-phase CCM. When the CPU enters deeper sleep mode, the ISL6262 enables diode Ordering Information emulation to maximize the efficiency at the light load. PART PART TEMP. PKG. A 7-bit digital-to-analog converter (DAC) allows dynamic NUMBER MARKING (C) PACKAGE DWG. adjustment of the core output voltage from 0.300V to 1.500V. ISL6262CRZ ISL6262CRZ -10 to 100 48 Ld 7x7 QFN L48.7x7 A 0.5% system accuracy of the core output voltage over (Note) (Pb-free) temperature is achieved by the ISL6262. ISL6262CRZ-T ISL6262CRZ -10 to 100 48 Ld 7x7 QFN L48.7x7 (Note) (Pb-free) A unity-gain differential amplifier is provided for remote CPU die sensing. This allows the voltage on the CPU die to be ISL6262IRZ ISL6262IRZ -40 to 100 48 Ld 7x7 QFN L48.7x7 accurately measured and regulated per Intel IMVP-6 (Note) (Pb-free) specifications. Current sensing can be realized using either ISL6262IRZ-T ISL6262IRZ -40 to 100 48 Ld 7x7 QFN L48.7x7 lossless inductor DCR sensing or precision resistor sensing. (Note) (Pb-free) A single NTC thermistor network thermally compensates the NOTE: Intersil Pb-free plus anneal products employ special Pb-free gain and the time constant of the DCR variations. material sets molding compounds/die attach materials and 100% matte tin plate termination finish, which are 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. FN9199 Rev 2.00 Page 1 of 27 May 15, 2006ISL6262 Pinout ISL6262 (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 PGD IN 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 FN9199 Rev 2.00 Page 2 of 27 May 15, 2006 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