TPS54540 - Texas Instruments

TPS54540 Step Down DC-DC Converter

The TPS54540 is a 42 V, 5 A, step down regulator with an integrated high side MOSFET. The device survives load dump pulses up to 45V per ISO 7637. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load supply current to 146 μA. Shutdown supply current is reduced to 2 μA wh.

Features

•1 High Efficiency at Light Loads with Pulse Skipping Eco-mode™
• 92-mΩ High-Side MOSFET
• 146 μA Operating Quiescent Current and 2 μA Shutdown Current
• 100 kHz to 2.5 MHz Fixed Switching Frequency
• Synchronizes to External Clock
• Low Dropout at Light Loads with Integrated BOOT Recharge FET
• Adjustable UVLO Voltage and Hysteresis
• 0.8 V 1% Internal Voltage Reference
• 8-Terminal HSOP with PowerPAD™ Package
•
  –40°C to 150°C TJ Operating Range
• Create a Custom Design using the TPS54540 with the WEBENCH® Power Designer 2 Applications
• Industrial Automation and Motor Control
• Vehicle Acc.