TPS54519

TPS54519 www.ti.com SLVSAT3A – SEPTEMBER 2011 – REVISED DECEMBER 2013 2.95 V to 6 V Input, 5-A Synchronous Step Down SWIFT™ Converter FEATURES 1 2 Two 30 mΩ (typical) MOSFETs for high efficiency at 5-A loads 200kHz to 2MHz Switching Frequency 0.6 V Voltage Reference With ± 1% Initial Accuracy Adjustable Slow Start / Sequencing UV and OV Power Good Output Low Operating and Shutdown Quiescent Current Safe Start-up into Pre-Biased Output Cycle by Cycle Current Limit, Thermal and Frequency Fold Back Protection –40°C to 140°C Operating Junction Temperature Range Thermally Enhanced 3mm × 3mm 16-pin QFN APPLICATIONS Low-Voltage, High-Density Power Systems Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors Broadband, Networking and Optical Communications Infrastructure SIMPLIFIED SCHEMATIC VIN CI VIN CBOOT BOOT R4 TPS54519 EN PH LO R5 CO C ss RT PWRGD VSENSE SS/TR RT COMP GND AGND POWERPAD R3 C1 VOUT R1 R2 DESCRIPTION The TPS54519 device is a full featured 6 V, 5 A, synchronous step down current mode converter with two integrated MOSFETs. The TPS54519 enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2 MHz switching frequency, and minimizing the IC footprint with a small 3mm x 3mm thermally enhanced QFN package. Efficiency is maximized through the integrated 30mΩ MOSFETs and 350μA typical supply ...