DATASHEET ISL6217A FN9107 Rev 3.00 Precision Multi-Phase Buck PWM Controller for Intel, Mobile Voltage Positioning June 30, 2005 IMVP-IV and IMVP-IV+ The ISL6217A Multi-Phase Buck PWM controller IC, with Features integrated half bridge gate drivers, provides a precision Diode Emulation Functionality in deep and deeper sleep voltage regulation system for advanced Pentium IV modes for improved light load efficiency microprocessors in notebook computers. Two-phase operation eases the thermal management issues and load IMVP-IV and IMVP-IV+ Compliant CORE Regulator demand of Intels latest high performance processors. This Single and/or Two-phase Power Conversion control IC also features both input voltage feed-forward and Loss-less Current sensing for improved efficiency and average current mode control for excellent dynamic reduced board area response, Loss-less current sensing using MOSFET - Optional Discrete Precision Current Sense Resistor r and user-selectable switching frequencies from DS(ON) 250kHz to 1MHz per phase. Internal Gate-Drive and Boot-Strap Diodes The ISL6217A includes a 6-bit digital-to-analog converter Precision CORE Voltage Regulation (DAC) that dynamically adjusts the CORE PWM output - 0.8% system accuracy over temperature voltage from 0.700V to 1.708V in 16mV steps and conforms 6-Bit Microprocessor Voltage Identification Input to the Intel IMVP-IV and IMVP-IV+ mobile VID specification. The ISL6217A also has logic inputs to select Programmable Droop and CORE Voltage Slew Rate to Active, Deep Sleep and Deeper Sleep modes of operation. A comply with IMVP-IV and IMVP-IV+ specification precision reference, remote sensing and proprietary Direct Interface with System Logic (STP CPU and architecture, with integrated, processor-mode, compensated DPRSLPVR) for Deep and Deeper Sleep modes of Droop, provide excellent static and dynamic CORE voltage operation regulation. Easily Programmable voltage setpoints for Initial Boot, To improve efficiency at light loading, the ISL6217A can be Deep Sleep and Deeper Sleep Modes configured to run in single phase PWM in ACTIVE, DEEP or Excellent Dynamic Response DEEPER SLEEP modes of operation. Also, in deep and - Combined Voltage Feed-Forward and Average Current deeper sleep modes the ISL6217A will operate in diode Mode Control emulation. Overvoltage, Undervoltage and Overcurrent Protection Another feature of this IC controller is the PGOOD monitor Power-Good Output with internal blanking during VID and circuit that is held low until CORE voltage increases, during mode changes its soft-start sequence, to within 12% of the Boot voltage. This PGOOD signal is masked during VID changes. Output User programmable Switching Frequency of 250kHz - overcurrent, overvoltage and undervoltage are monitored 1MHz per phase and result in the converter latching off and PGOOD signal Pb-Free Plus Anneal Available (RoHS Compliant) being held low. The overvoltage and undervoltage thresholds are 112% and 84% of the VID, Deep or Deeper Sleep setpoint, respectively. Overcurrent protection features a 32 cycle overcurrent shutdown. PGOOD, overvoltage, undervoltage and overcurrent provide monitoring and protection for the microprocessor and power system. The ISL6217A IC is available in a 38 lead TSSOP. FN9107 Rev 3.00 Page 1 of 20 June 30, 2005ISL6217A Pinout Ordering Information ISL6217A (38 LD TSSOP) PKG. TOP VIEW PART NUMBER TEMP (C) PACKAGE DWG. VDD 1 38 VBAT ISL6217ACV -10 to 85 38 Ld TSSOP M38.173 DACOUT 2 37 ISEN1 ISL6217ACV-T 38 Ld TSSOP Tape and Reel M38.173 DSV 3 36 PHASE1 ISL6217ACVZ -10 to 85 38 Ld TSSOP M38.173 FSET 4 35 UG1 (Note 1) (Pb-free) PWRCH 5 34 BOOT1 EN 6 33 VSSP1 ISL6217ACVZ-T 38 Ld TSSOP Tape and Reel M38.173 (Note 1) (Pb-free) DRSEN 7 32 LG1 DSEN 8 31 VDDP ISL6217ACVZA -10 to 85 38 Ld TSSOP M38.173 VID0 9 30 LG2 (Pb-free) ISL6217A VID1 10 29 VSSP2 ISL6217ACVZA-T 38 Ld TSSOP Tape and Reel M38.173 TSSOP VID2 11 28 BOOT2 (Pb-free) VID3 12 27 UG2 NOTE: Intersil Pb-free plus anneal products employ special Pb-free VID4 13 26 PHASE2 material sets molding compounds/die attach materials and 100% VID5 14 25 ISEN2 matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil PGOOD 15 24 VSEN Pb-free products are MSL classified at Pb-free peak reflow EA+ 16 23 DRSV temperatures that meet or exceed the Pb-free requirements of COMP 17 22 STV IPC/JEDEC J STD-020. FB 18 21 OCSET SOFT 19 20 VSS FN9107 Rev 3.00 Page 2 of 20 June 30, 2005