DATASHEET ISL6563 FN9126 Rev 8.00 Two-Phase Multiphase Buck PWM Controller with Integrated MOSFET Drivers Jun 10, 2010 The ISL6563 two-phase PWM control IC provides a Features precision voltage regulation system for advanced Integrated Two-Phase Power Conversion microprocessors. Multiphase power conversion is a marked departure from single phase converter configurations Both 5V and 12V Conversion employed to satisfy the increasing current demands of Precision Channel Current Sharing modern microprocessors and other electronic circuits. By - Loss Less Current Sampling - Uses r DS(ON) distributing the power and load current, implementation of multiphase converters utilize smaller and lower cost Precision Output Voltage Regulation transistors with fewer input and output capacitors. These - 1% System Accuracy Over-Temperature (Commercial) reductions accrue from the higher effective conversion frequency with higher frequency ripple current due to the Microprocessor Voltage Identification Inputs phase interleaving process of this topology. - Up to a 6-Bit DAC - Selectable between Intels VRM9, VRM10, or AMDs Outstanding features of this controller IC include Hammer DAC codes programmable VID codes compatible with Intel VRM9, VRM10, as well as AMDs Hammer microprocessors, along - Resistor-Programmable Droop Voltage with a system regulation accuracy of 1%. The droop Fast Transient Recovery Time characteristic, used to reduce the overshoot or undershoot of the output voltage, is easily programmed with a single resistor. Overcurrent Protection Important features of this controller IC include a set of Improved, Multi-tiered Overvoltage Protection sophisticated overvoltage and overcurrent protection. Capable of Start-up into a Pre-Charged Output Overvoltage results in the converter turning the lower MOSFETs ON to clamp the rising output voltage and protect QFN Package: the microprocessor. Like other Intersil multiphase - Compliant to JEDEC PUB95 MO-220 controllers, the ISL6563 uses cost and space-saving QFN - Quad Flat No Leads - Package Outline r sensing for channel current balance, dynamic DS(ON) - Near Chip Scale Package Footprint, which Improves voltage positioning, and overcurrent protection. Channel PCB Efficiency and has a Thinner Profile current balancing is automatic and accurate with the integrated current-balance control system. Overcurrent Pb-Free (RoHS Compliant) protection can be tailored to any application with no need for additional parts. These features provide advanced protection Pinout for the microprocessor and power system. ISL6563 (24 LD QFN) Ordering Information TOP VIEW TEMP. PART NUMBER PART RANGE PACKAGE PKG. (Note 2) MARKING (C) (Pb-free) DWG. ISL6563CRZ 65 63CRZ 0 to +70 24 Ld 4x4 QFN L24.4x4B 24 23 22 21 20 19 ISL6563CRZ-T (Note 1) 65 63CRZ 0 to +70 24 Ld 4x4 QFN L24.4x4B VID1 1 18 PHASE1 ISL6563CRZ-TK (Note 1) 65 63CRZ 0 to +70 24 Ld 4x4 QFN L24.4x4B 17 VID0 2 LGATE1 ISL6563IRZ 65 63IRZ -40 to +85 24 Ld 4x4 QFN L24.4x4B DACSEL/VID5 3 16 PVCC ISL6563IRZ-T (Note 1) 65 63IRZ -40 to +85 24 Ld 4x4 QFN L24.4x4B 25 GND ISL6563EVAL1 Evaluation Platform VRM10 4 15 LGATE2 NOTES: COMP 5 14 PGND 1. Please refer to TB347 for details on reel specifications. FB 6 13 PHASE2 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte 789 10 11 12 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. FN9126 Rev 8.00 Page 1 of 20 Jun 10, 2010 ISEN VID2 VCC VID3 OFS VID4 SSEND ENLL BOOT2 BOOT1 UGATE2 UGATE1ISL6563 FN9126 Rev 8.00 Page 2 of 20 Jun 10, 2010 Block Diagram SSEND ENLL VCC PVCC BOOT1 OVP WHILE DISABLED 1.65V/1.95V + - UGATE1 POWER-ON OVP RESET (POR) OSCILLATOR PHASE1 GATE + CONTROL 200mV - COMP LGATE1 VID0 VID1 PWM1 SOFT-START PGND VID2 AND TTL D/A FAULT LOGIC CONVERTER VID3 (VID DAC) CONTROL LOGIC VID4 EA DACSEL/VID5 BOOT2 + OC PWM2 VRM10 - UGATE2 FB PHASE2 GATE CONTROL CURRENT CORRECTION DROOP LGATE2 SOURCE OFFSET SOURCE GND 2 OFS ISEN