TPS54540是TI公司的一款转换器（集成开关）产品，TPS54540是42 V, 5 A, Step-Down DC-DC Converter with Eco-Mode，本页介绍了TPS54540的产品说明、应用、特性等，并给出了与TPS54540相关的TI元器件型号供参考。
TPS54540 - 42 V, 5 A, Step-Down DC-DC Converter with Eco-Mode - 转换器（集成开关） - DC/DC开关稳压器 - TI公司（Texas Instruments，德州仪器）
- 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 HSOIC with PowerPAD™ Package
- –40°C to 150°C TJ Operating Range
- Supported by WEBENCH™ Software Tool
- Industrial Automation and Motor Control
- Vehicle Accessories: GPS, Entertainment
- USB Dedicated Charging Ports and Battery Chargers
- 12 V and 24 V Industrial, Automotive and Communications Power Systems
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 when the enable pin is pulled low.
Undervoltage lockout is internally set at 4.3 V but can be increased using the enable pin. The output voltage start up ramp is internally controlled to provide a controlled start up and eliminate overshoot.
A wide switching frequency range allows either efficiency or external component size to be optimized. Output current is limited cycle-by-cycle. Frequency foldback and thermal shutdown protects internal and external components during an overload condition.
The TPS54540 is available in an 8-terminal thermally enhanced HSOIC PowerPAD™ package.
| ORDER NUMBER | PACKAGE | BODY SIZE |
|---|---|---|
| TPS54540DDA | HSOIC (8) | 4,89mm x 3,9mm |
