ISL6567IRZ-T Renesas

Multipurpose Two-Phase Buck PWM Controller with Integrated MOSFET Drivers ISL6567 Features The ISL6567 two-phase synchronous buck PWM control IC Integrated Two-Phase Power Conversion provides a precision voltage regulation system for point-of-load - Integrated 4A Drivers for High Efficiency and other high-current applications requiring an efficient and Shunt Regulator for Wide Input Power Conversion compact implementation. Multi-phase power conversion is a - 5V and Higher Bias marked departure from single phase converter configurations employed to satisfy the increasing current demands of various - Up to 20V Power-Down-Conversion electronic circuits. By distributing the power and load current, Precision Channel Current Sharing implementation of multi-phase converters utilize smaller and - Loss-Less Current Sampling - Uses r lower cost transistors with fewer input and output capacitors. DS(ON) These reductions accrue from the higher effective conversion Precision Output Voltage Regulation frequency with higher frequency ripple current resulting from - 0.6% System Accuracy Over-Temperature (Commercial the phase interleaving inherent to this topology. Range) Outstanding features of this controller IC include an internal 0.6V Internal Reference 0.6V reference with a system regulation accuracy of 0.6%, an Full Spectrum Voltage Tracking optional external reference input, and user-adjustable switching frequency. Precision regulation is further enhanced - Coincidental, Ratiometric, or Offset by the available unity-gain differential amplifier targeted at Sequential Start-up Control remote voltage sensing capability, while output regulation is monitored and its quality is reported via a PGOOD pin. Also Adjustable Switching Frequency included is an internal shunt regulator with optional external - 150kHz to 1.5MHz connection capability which extends the operational input Fast Transient Recovery Time voltage range. For applications requiring voltage tracking or sequencing, the ISL6567 offers a host of possibilities, Unity-Gain Differential Amplifier including coincidental, ratiometric, or offset tracking, as well - Increased Voltage Sensing Accuracy as sequential start-ups, user adjustable for a wide range of Overcurrent Protection applications. Overvoltage Protection Protection features of this controller IC include overvoltage and overcurrent protection. Overvoltage results in the Start-up into Pre-Charged Output converter turning the lower MOSFETs ON to clamp the rising Small, QFN Package Footprint output voltage. The ISL6567 uses cost and space-saving Pb-Free (RoHS Compliant) r sensing for channel current balance, dynamic voltage DS(ON) positioning, and overcurrent protection. Channel current balancing is automatic and accurate with the integrated Ordering Information current-balance control system. Overcurrent protection can be TEMP. tailored to various application with no need for additional PART NUMBER PART RANGE PACKAGE PKG. parts. (Notes 1, 2, 3) MARKING (C) (Pb-Free) DWG. ISL6567CRZ 65 67CRZ 0 to +70 24 Ld 4x4 QFN L24.4x4C ISL6567IRZ 65 67IRZ -40 to +85 24 Ld 4x4 QFN L24.4x4C NOTE: 1. Add -T* suffix for tape and reel. 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 ISL6567. For more information on MSL please see techbrief TB363. August 9, 2011 CAUTION: These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. 1 1-888-INTERSIL or 1-888-468-3774 Copyright Intersil Americas Inc. 2005-2009, 2011. All Rights Reserved FN9243.4 Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners.ISL6567 Pin Configuration ISL6567 (24 LD QFN) TOP VIEW 24 23 22 21 20 19 RGND 1 18 PHASE1 VSEN 2 17 ISEN1 MON 3 16 LGATE1 25 GND 15 VDIFF 4 PVCC FB 5 14 LGATE2 COMP 6 13 ISEN2 78 9 10 11 12 FN9243.4 2 August 9, 2011 VREG REFTRK VCC SS EN FS BOOT2 PGOOD UGATE2 BOOT1 PHASE2 UGATE1