規格
| 屬性 | 價值 |
| Package | Bulk,Tube |
| Series | Eco-Mode™ |
| ProductStatus | Not For New Designs |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck, Split Rail |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 4.5V |
| Voltage-Input(Max) | 42V |
| Voltage-Output(Min/Fixed) | 0.8V |
| Voltage-Output(Max) | 41.1V |
| Current-Output | 5A |
| Frequency-Switching | 100kHz ~ 2.5MHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 150°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 8-PowerSOIC (0.154, 3.90mm Width) |
概述
Description
The TPS54540DDA is a high-performance, step-down DC-DC converter from Texas Instruments. It is designed to deliver up to 5.5 A of continuous output current, making it suitable for a variety of power management applications. The device operates over a wide input voltage range of 4.5 V to 42 V, which allows it to be used in systems with varying input sources, such as automotive, industrial, or battery-powered devices.
Key features of the TPS54540DDA include a high-efficiency switching regulator, typically operating at 90% efficiency, an adjustable output voltage range from 0.8 V to 32 V, and a switching frequency of up to 2.5 MHz, providing designers with flexibility in optimizing for size and efficiency. It also incorporates protection features like overcurrent protection, thermal shutdown, and undervoltage lockout to enhance reliability.
The device comes in an 8-pin SO PowerPAD™ package, which ensures good thermal performance. It is widely used in applications requiring efficient power conversion and regulation, such as distributed power systems, industrial controls, and portable electronics.
Key features of the TPS54540DDA include a high-efficiency switching regulator, typically operating at 90% efficiency, an adjustable output voltage range from 0.8 V to 32 V, and a switching frequency of up to 2.5 MHz, providing designers with flexibility in optimizing for size and efficiency. It also incorporates protection features like overcurrent protection, thermal shutdown, and undervoltage lockout to enhance reliability.
The device comes in an 8-pin SO PowerPAD™ package, which ensures good thermal performance. It is widely used in applications requiring efficient power conversion and regulation, such as distributed power systems, industrial controls, and portable electronics.
Equivalent
The TPS54540DDA is a 42-V, 5-A step-down (buck) converter. Equivalent products might include:
1. LMR16006 from Texas Instruments: A 60-V, 0.6-A buck regulator.
2. LM76002 from Texas Instruments: A 60-V, 2.5-A buck converter.
3. LT8609 from Analog Devices: A 42-V, 2-A synchronous step-down regulator.
4. MP4559 from Monolithic Power Systems: A 55-V, 3.5-A step-down converter.
These are similar in functionality but check specifications and pin compatibility.
1. LMR16006 from Texas Instruments: A 60-V, 0.6-A buck regulator.
2. LM76002 from Texas Instruments: A 60-V, 2.5-A buck converter.
3. LT8609 from Analog Devices: A 42-V, 2-A synchronous step-down regulator.
4. MP4559 from Monolithic Power Systems: A 55-V, 3.5-A step-down converter.
These are similar in functionality but check specifications and pin compatibility.
Features
The TPS54540DDA is a DC-DC buck converter designed for efficient power management applications. Key features include:
1. Wide Input Voltage Range: Operates from 5.5 V to 42 V, making it suitable for various applications, including industrial and automotive.
2. Output Current: Delivers up to 5 A continuous output current, providing robust power delivery for demanding loads.
3. High Efficiency: Achieves up to 96% efficiency with advanced power-saving features, reducing thermal stress and improving reliability.
4. Adjustable Output Voltage: Features an adjustable output voltage down to 0.8 V, offering flexibility in power supply design.
5. Switching Frequency: Capable of operating at a fixed 500 kHz switching frequency for reduced component size and improved response times.
6. Protection Features: Includes overcurrent protection, thermal shutdown, and undervoltage lockout, enhancing system safety and protection.
7. Soft Start: Integrates a programmable soft-start feature to prevent inrush current during startup.
8. Package: Available in the thermally enhanced 8-pin SO PowerPAD package, improving heat dissipation.
Overall, the TPS54540DDA is ideal for efficient, high-current applications requiring a wide input voltage range and robust protection features.
1. Wide Input Voltage Range: Operates from 5.5 V to 42 V, making it suitable for various applications, including industrial and automotive.
2. Output Current: Delivers up to 5 A continuous output current, providing robust power delivery for demanding loads.
3. High Efficiency: Achieves up to 96% efficiency with advanced power-saving features, reducing thermal stress and improving reliability.
4. Adjustable Output Voltage: Features an adjustable output voltage down to 0.8 V, offering flexibility in power supply design.
5. Switching Frequency: Capable of operating at a fixed 500 kHz switching frequency for reduced component size and improved response times.
6. Protection Features: Includes overcurrent protection, thermal shutdown, and undervoltage lockout, enhancing system safety and protection.
7. Soft Start: Integrates a programmable soft-start feature to prevent inrush current during startup.
8. Package: Available in the thermally enhanced 8-pin SO PowerPAD package, improving heat dissipation.
Overall, the TPS54540DDA is ideal for efficient, high-current applications requiring a wide input voltage range and robust protection features.
Pinout
The TPS54540DDA is a step-down DC-DC converter integrated circuit from Texas Instruments. It is designed for applications requiring a high-efficiency, low-ripple output.
- Pin Count: The TPS54540DDA comes in an 8-pin SO PowerPAD package.
- Pin Functions:
1. BOOT: Bootstrap capacitor connection for the high-side gate driver.
2. VIN: Input supply voltage.
3. EN: Enable pin to turn the device on or off.
4. RT/CLK: Resistor timing or clock input for setting the switching frequency.
5. SS/TR: Soft start and tracking input.
6. VSENSE: Feedback voltage for regulating the output.
7. COMP: Compensation network input for stabilizing the control loop.
8. GND: Ground reference.
Additionally, the exposed thermal pad must be connected to a large area of the PCB to aid in heat dissipation. The TPS54540DDA operates over a wide input voltage range and provides a high level of integration and efficiency, making it suitable for various power management applications.
- Pin Count: The TPS54540DDA comes in an 8-pin SO PowerPAD package.
- Pin Functions:
1. BOOT: Bootstrap capacitor connection for the high-side gate driver.
2. VIN: Input supply voltage.
3. EN: Enable pin to turn the device on or off.
4. RT/CLK: Resistor timing or clock input for setting the switching frequency.
5. SS/TR: Soft start and tracking input.
6. VSENSE: Feedback voltage for regulating the output.
7. COMP: Compensation network input for stabilizing the control loop.
8. GND: Ground reference.
Additionally, the exposed thermal pad must be connected to a large area of the PCB to aid in heat dissipation. The TPS54540DDA operates over a wide input voltage range and provides a high level of integration and efficiency, making it suitable for various power management applications.
Manufacturer
The TPS54540DDA is manufactured by Texas Instruments (TI), a global semiconductor company. Texas Instruments designs and produces a wide range of semiconductor products, including analog and embedded processing chips. The company is well-known for its innovation in the semiconductor industry, focusing on creating products that help engineers and designers develop new applications in various fields like automotive, industrial, personal electronics, and communications equipment. TI's products are integral to various electronic systems, playing a crucial role in modern technology.
Application
The TPS54540DDA is a high-efficiency synchronous buck converter that is commonly used in various applications, including:
1. Industrial Power Systems: Provides reliable power conversion for automation and control systems.
2. Telecommunications: Supplies power to network infrastructure and communication devices.
3. Consumer Electronics: Powers devices like set-top boxes, digital TVs, and gaming consoles.
4. Automotive Systems: Used in infotainment systems and other electronic control units.
5. Distributed Power Architectures: Supports intermediate bus converters and point-of-load applications.
6. LED Lighting: Drives high-power LED systems efficiently.
Its wide input voltage range and robust design make it suitable for various demanding environments and applications.
1. Industrial Power Systems: Provides reliable power conversion for automation and control systems.
2. Telecommunications: Supplies power to network infrastructure and communication devices.
3. Consumer Electronics: Powers devices like set-top boxes, digital TVs, and gaming consoles.
4. Automotive Systems: Used in infotainment systems and other electronic control units.
5. Distributed Power Architectures: Supports intermediate bus converters and point-of-load applications.
6. LED Lighting: Drives high-power LED systems efficiently.
Its wide input voltage range and robust design make it suitable for various demanding environments and applications.
Package
The TPS54540DDA is a DC-DC buck converter from Texas Instruments, and it comes in an 8-pin SO PowerPAD package. The PowerPAD design enhances thermal performance, making it suitable for high-efficiency power supply applications.
