ISL62882C Multiphase PWM Regulator for IMVP-6.5 Mobile CPUs and GPUs ISL62882C Features Programmable 1- or 2-Phase CPU or GPU Mode The ISL62882C is a multiphase PWM buck regulator for Operation miroprocessor or graphics processor core power supply. Precision Multiphase Core Voltage Regulation The multiphase buck converter uses interleaved phases to reduce the total output voltage ripple with each phase - 0.5% System Accuracy Over-Temperature carrying a portion of the total load current, providing - Enhanced Load Line Accuracy better system performance, superior thermal Microprocessor Voltage Identification Input management, lower component cost, reduced power - 7-Bit VID Input, 0V to 1.500V in 12.5mV Steps dissipation, and smaller implementation area. The ISL62882C uses two integrated gate drivers to provide a - Supports VID Changes On-The-Fly complete solution. The PWM modulator is based on Supports Multiple Current Sensing Methods 3 Intersil s Robust Ripple Regulator (R ) technology. 3 - Lossless Inductor DCR Current Sensing Compared with traditional modulators, the R - Precision Resistor Current Sensing modulator commands variable switching frequency during load transients, achieving faster transient Supports PSI and DPRSLPVR modes response. With the same modulator, the switching Superior Noise Immunity and Transient Response frequency is reduced at light load, increasing the Current Monitor and Thermal Monitor regulator efficiency. Differential Remote Voltage Sensing The ISL62882C can be configured as CPU or graphics High Efficiency Across Entire Load Range Vcore controller and is fully compliant with IMVP-6.5 specifications. It responds to PSI and DPRSLPVR signals Two Integrated Gate Drivers by adding or dropping Phase 2, adjusting overcurrent Excellent Dynamic Current Balance Between Phases protection threshold accordingly, and entering/exiting Split LGATE1 Drivers Increases Light Load Efficiency diode emulation mode. It reports the regulator output FB2 Function Optimizes 1-Phase Mode Performance current through the IMON pin. It senses the current by Adaptive Body Diode Conduction Time Reduction using either discrete resistor or inductor DCR whose variation over temperature can be thermally User-selectable Overshoot Reduction Function compensated by a single NTC thermistor. It uses Small Footprint 40 Ld 5x5 TQFN Packages differential remote voltage sensing to accurately regulate Pb-Free (RoHS Compliant) the processor die voltage. The unique split LGATE function further increases light load efficiency. The Applications*(see page 42) adaptive body diode conduction time reduction function minimizes the body diode conduction loss in diode Notebook Core Voltage Regulator emulation mode. User-selectable overshoot reduction Notebook GPU Voltage Regulator function offers an option to aggressively reduce the output capacitors as well as the option to disable it for Related Literature*(see page 42) users concerned about increased system thermal stress. See AN1461 for ISL62882/ISL62882C Evaluation The ISL62882C offers the FB2 function to optimize Board Application Note ISL62882EVAL2Z User 1-phase performance. Guide December 24, 2009 CAUTION: These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. 1 1-888-INTERSIL or 1-888-468-3774 Intersil (and design) is a registered trademark of Intersil Americas Inc. FN7556.0 Copyright Intersil Americas Inc. 2009. All Rights Reserved All other trademarks mentioned are the property of their respective owners.ISL62882C Load Line Regulation 1.10 1.08 V = 8V 1.06 IN 1.04 V = 12V IN 1.02 V = 19V IN 1.00 0.98 0.96 0.94 0.92 0 5 10 15 20 25 30 35 40 45 50 55 60 65 I (A) OUT Ordering Information PART NUMBER TEMP. RANGE PACKAGE PKG. (Note 3) PART MARKING (C) (Pb-Free) DWG. ISL62882CIRTZ (Note 2) 62882C IRTZ -40 to +100 40 Ld 5x5 TQFN L40.5x5 ISL62882CIRTZ-T (Notes 1, 2) 62882C IRTZ -40 to +100 40 Ld 5x5 TQFN L40.5x5 ISL62882CHRTZ (Note 2) 62882C HRTZ -10 to +100 40 Ld 5x5 TQFN L40.5x5 ISL62882CHRTZ-T (Notes 1, 2) 62882C HRTZ -10 to +100 40 Ld 5x5 TQFN L40.5x5 NOTES: 1. Please refer to TB347 for details on reel specifications. 2. 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. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL62882C. For more information on MSL please see techbrief TB363. Pin Configuration ISL62882C (40 LD TQFN) TOP VIEW 40 39 38 37 36 35 34 33 32 31 1 30 BOOT2 PGOOD PSI 2 29 UGATE2 RBIAS PHASE2 3 28 VR TT VSSP2 4 27 LGATE2 NTC 5 26 GND PAD (BOTTOM) VW 6 25 VCCP COMP 7 24 LGATE1b FB 8 23 LGATE1a FB2 9 22 VSSP1 ISEN2 10 21 PHASE1 11 12 13 14 15 16 17 18 19 20 FN7556.0 2 December 24, 2009 CLK EN ISEN1 DPRSLPVR VSEN VR ON RTN VID6 ISUM- VID5 ISUM+ VID4 VDD VID3 VIN VID2 IMON VID1 BOOT1 VID0 UGATE1 V (V) OUT