ISL62883C Multiphase PWM Regulator for IMVP-6.5 Mobile CPUs and GPUs ISL62883C Features Programmable 1, 2- or 3-Phase CPU or GPU Mode of The ISL62883C 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 phase 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 - Supports VID Changes On-The-Fly ISL62883C uses two integrated gate drivers and an external gate driver to provide a complete solution. The Supports Multiple Current Sensing Methods PWM modulator is based on Intersil s Robust Ripple - Lossless Inductor DCR Current Sensing 3 Regulator (R ) technology. Compared with traditional - Precision Resistor Current Sensing 3 modulators, the R modulator commands variable Supports PSI and DPRSLPVR modes switching frequency during load transients, achieving faster transient response. With the same modulator, the Superior Noise Immunity and Transient Response switching frequency is reduced at light load, increasing Current Monitor and Thermal Monitor the regulator efficiency. Differential Remote Voltage Sensing The ISL62883C can be configured as CPU or graphics High Efficiency Across Entire Load Range Vcore controller and is fully compliant with IMVP-6.5 Two Integrated Gate Drivers specifications. It responds to PSI and DPRSLPVR signals Excellent Dynamic Current Balance by adding or dropping PWM3 and Phase 2 respectively, FB2 Function Optimizes 1-Phase Mode Performance adjusting overcurrent protection threshold accordingly, and entering/exiting diode emulation mode. It reports Adaptive Body Diode Conduction Time Reduction the regulator output current through the IMON pin. It User-selectable Overshoot Reduction Function senses the current by using either discrete resistor or Small Footprint 40 Ld 5x5 TQFN Packages inductor DCR whose variation over temperature can be Pb-Free (RoHS Compliant) thermally compensated by a single NTC thermistor. It uses differential remote voltage sensing to accurately regulate the processor die voltage. The adaptive body Applications*(see page 42) diode conduction time reduction function minimizes Notebook Core Voltage Regulator the body diode conduction loss in diode emulation Notebook GPU Voltage Regulator mode. User-selectable overshoot reduction function offers an option to aggressively reduce the output Related Literature*(see page 42) capacitors as well as the option to disable it for users See AN1460 for ISL62883/ISL62883C Evaluation concerned about increased system thermal stress. In Board Application Note ISL62883EVAL2Z User 2-Phase configuration, the ISL62883C offers the FB2 Guide function to optimize 1-Phase performance. Load Line Regulation 1.10 1.08 1.06 V = 8V 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 March 18, 2010 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. FN7557.1 Copyright Intersil Americas Inc. 2009, 2010. All Rights Reserved All other trademarks mentioned are the property of their respective owners. V (V) OUTISL62883C Ordering Information PART NUMBER TEMP. RANGE PACKAGE PKG. (Note 3) PART MARKING (C) (Pb-Free) DWG. ISL62883CIRTZ (Note 2) 62883C IRTZ -40 to +100 40 Ld 5x5 TQFN L40.5x5 ISL62883CIRTZ-T (Notes 1, 2) 62883C IRTZ -40 to +100 40 Ld 5x5 TQFN L40.5x5 ISL62883CHRTZ (Note 2) 62883C HRTZ -10 to +100 40 Ld 5x5 TQFN L40.5x5 ISL62883CHRTZ-T (Notes 1, 2) 62883C 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 ISL62883C. For more information on MSL please see techbrief TB363. Pin Configuration ISL62883C (40 LD TQFN) TOP VIEW 40 39 38 37 36 35 34 33 32 31 1 30 BOOT2 PGOOD PSI 2 29 UGATE2 RBIAS 3 28 PHASE2 VR TT 4 27 VSSP2 NTC 5 26 LGATE2 GND PAD (BOTTOM) VW VCCP 6 25 COMP 7 24 PWM3 FB 8 23 LGATE1 9 22 VSSP1 ISEN3/FB2 10 21 PHASE1 ISEN2 11 12 13 14 15 16 17 18 19 20 FN7557.1 2 March 18, 2010 CLK EN DPRSLPVR VR ON VID6 VID5 VID4 VID3 VID2 VID1 VID0 ISEN1 VSEN RTN ISUM- ISUM+ VDD VIN IMON BOOT1 UGATE1