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TPS54541 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS54541 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 48 page  60 65 70 75 80 85 90 95 100 0 0.5 1 1.5 2 2.5 3 3.5 I O - Output Current (A) C099 V OUT = 12 V, fsw = 620 kHz, V OUT = 5 V and 3.3 V, f sw = 400 kHz 12 V to 5 V 12 V to 3.3 V 36 V to 12 V SW VIN GND BOOT FB COMP TPS54541 EN RT/CLK VIN VOUT SS/TR PWRGD TPS54541 www.ti.com SLVSC57 – OCTOBER 2013 4.5-V to 42-V Input, 5-A Step-Down DC-DC Converter With Soft-Start and Eco-mode™ Check for Samples: TPS54541 1 FEATURES DESCRIPTION The TPS54541 device is a 42-V 5-A step-down 23 • High Efficiency at Light Loads with Pulse regulator with an integrated high-side MOSFET. The Skipping Eco-mode™ device survives load dump pulses up to 45 V per ISO • 87-m Ω High-Side MOSFET 7637. Current mode control provides simple external • 152- μA Operating Quiescent Current and compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no load 2- μA Shutdown Current supply current to 152 μA. Shutdown supply current is • 100-kHz to 2.5-MHz Adjustable Switching reduced to 2 μA when the enable pin is pulled low. Frequency Undervoltage lockout is internally set at 4.3 V but can • Synchronizes to External Clock increase using an external resistor divider at the • Low Dropout at Light Loads with Integrated enable pin. The output voltage startup ramp is BOOT Recharge FET controlled by the soft-start pin that can also be • Adjustable UVLO Voltage and Hysteresis configured for sequencing and tracking. An open- drain power-good signal indicates the output is within • UV and OV Power-Good Output 93% to 106% of the nominal voltage. • Adjustable Soft-Start and Sequencing A wide adjustable switching-frequency range allows • 0.8-V 1% Internal Voltage Reference for optimization of either efficiency or external • 10-Pin SON with Thermal Pad Package component size. Cycle-by-cycle current limit, • –40°C to 150°C TJ Operating Range frequency foldback and thermal shutdown protects internal and external components during an overload • Supported by WEBENCH® Software Tool condition. APPLICATIONS The TPS54541 device is available in a 10-pin 4-mm × 4-mm SON package. • Industrial Automation and Motor Control • Vehicle Accessories: GPS (see SLVA412), Entertainment • USB-Dedicated Charging Ports and Battery Chargers (see SLVA464) • 12-V and 24-V Industrial, Automotive and Communications Power Systems space SIMPLIFIED SCHEMATIC EFFICIENCY vs LOAD CURRENT 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 Eco-mode is a trademark of Texas Instruments. 3 WEBENCH is a registered trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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