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TPS54540DDA
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規格
| 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 step-down (buck) converter designed by Texas Instruments. It is part of the SWIFT™ family of DC/DC converters and is engineered for applications requiring efficient power conversion with a high degree of flexibility. The device can deliver an output current of up to 5 A with input voltages ranging from 4.5 V to 42 V, making it suitable for a wide range of industrial, automotive, and communication applications.
The TPS54540DDA features an adjustable output voltage, soft-start, and current-mode control for fast transient response and loop stability. It has integrated high-side and low-side MOSFETs, which enhance efficiency and simplify the design by reducing the need for external components. The device also provides protection features such as cycle-by-cycle current limit, thermal shutdown, and undervoltage lockout, ensuring reliable operation under various conditions.
Packaged in an 8-pin SO PowerPAD™ package, the TPS54540DDA's compact size is ideal for space-constrained applications. Its advanced features and robust design make it a versatile solution for power supply designs requiring compact size, efficiency, and reliability.
The TPS54540DDA features an adjustable output voltage, soft-start, and current-mode control for fast transient response and loop stability. It has integrated high-side and low-side MOSFETs, which enhance efficiency and simplify the design by reducing the need for external components. The device also provides protection features such as cycle-by-cycle current limit, thermal shutdown, and undervoltage lockout, ensuring reliable operation under various conditions.
Packaged in an 8-pin SO PowerPAD™ package, the TPS54540DDA's compact size is ideal for space-constrained applications. Its advanced features and robust design make it a versatile solution for power supply designs requiring compact size, efficiency, and reliability.
Features
The TPS54540DDA is a step-down (buck) converter designed by Texas Instruments, optimized for applications requiring efficient power conversion. Key features include:
1. Wide Input Voltage Range: It supports a broad input voltage range from 5.5V to 42V, making it suitable for various power sources.
2. Output Current Capability: The device can deliver up to 5A of continuous output current.
3. Adjustable Output Voltage: The output voltage can be precisely adjusted from 0.8V to 90% of the input voltage, providing flexibility in different applications.
4. High Efficiency: It operates with high efficiency, reducing heat generation and improving performance in power-sensitive applications.
5. Integrated High-Side MOSFET: The internal high-side MOSFET simplifies design and reduces component count.
6. Switching Frequency: The TPS54540DDA supports a fixed switching frequency of 500kHz, balancing performance and efficiency.
7. Protection Features: It includes a range of protection features like over-current protection, thermal shutdown, and undervoltage lockout to ensure safe operation.
8. Soft Start: The device has a soft-start feature to control inrush current during startup.
These features make the TPS54540DDA suitable for automotive, industrial, and consumer applications where robust, efficient power conversion is required.
1. Wide Input Voltage Range: It supports a broad input voltage range from 5.5V to 42V, making it suitable for various power sources.
2. Output Current Capability: The device can deliver up to 5A of continuous output current.
3. Adjustable Output Voltage: The output voltage can be precisely adjusted from 0.8V to 90% of the input voltage, providing flexibility in different applications.
4. High Efficiency: It operates with high efficiency, reducing heat generation and improving performance in power-sensitive applications.
5. Integrated High-Side MOSFET: The internal high-side MOSFET simplifies design and reduces component count.
6. Switching Frequency: The TPS54540DDA supports a fixed switching frequency of 500kHz, balancing performance and efficiency.
7. Protection Features: It includes a range of protection features like over-current protection, thermal shutdown, and undervoltage lockout to ensure safe operation.
8. Soft Start: The device has a soft-start feature to control inrush current during startup.
These features make the TPS54540DDA suitable for automotive, industrial, and consumer applications where robust, efficient power conversion is required.
Package
The TPS54540DDA is a 5.5V to 42V input, 5A step-down (buck) converter from Texas Instruments. It comes in an 8-pin SO PowerPAD (DDA) package, which features a small footprint and enhanced thermal performance due to the PowerPAD design that allows for efficient heat dissipation.
Pinout
The TPS54540DDA is a step-down (buck) DC-DC converter from Texas Instruments, designed for high-efficiency power supply solutions. It comes in an 8-pin SO PowerPAD™ package. Here is a brief overview of its pin functions:
1. BOOT: Bootstrap input for driving the gate of the high-side MOSFET.
2. VIN: Input voltage supply pin.
3. SW: Switch node, connected to the inductor.
4. GND: Ground pin.
5. RT/CLK: Resistor timing or external clock for frequency setting.
6. EN: Enable pin to turn the device on or off.
7. COMP: Compensation pin for stability and transient response.
8. VSENSE: Feedback voltage pin for output voltage regulation.
This device is used in applications that require step-down voltage conversion with efficiencies up to 95%, overcurrent protection, and thermal shutdown.
1. BOOT: Bootstrap input for driving the gate of the high-side MOSFET.
2. VIN: Input voltage supply pin.
3. SW: Switch node, connected to the inductor.
4. GND: Ground pin.
5. RT/CLK: Resistor timing or external clock for frequency setting.
6. EN: Enable pin to turn the device on or off.
7. COMP: Compensation pin for stability and transient response.
8. VSENSE: Feedback voltage pin for output voltage regulation.
This device is used in applications that require step-down voltage conversion with efficiencies up to 95%, overcurrent protection, and thermal shutdown.
Manufacturer
The TPS54540DDA is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of electronic components, primarily focusing on analog chips and embedded processors. TI's products are used in various applications, including automotive, industrial, personal electronics, communications equipment, and enterprise systems. The company is known for its innovation in the semiconductor industry and has a strong presence in the development of integrated circuits and other technology solutions.
Application
The TPS54540DDA is a high-voltage buck converter used for efficient power management in various applications. It is suited for industrial automation, automotive systems, telecommunications, and distributed power systems. Its capabilities include stepping down voltage for microcontrollers, FPGAs, and other digital loads. The device is ideal for systems requiring high efficiency, thermal performance, and reliable power conversion in harsh environments.
Equivalent
The TPS54540DDA is a step-down DC-DC converter from Texas Instruments. Equivalent products from other manufacturers could include the LM2576 series from Texas Instruments, the LMR33630 from Texas Instruments, the LM2678 from Texas Instruments, the LM2596 by Texas Instruments, the LT1933 from Analog Devices, and the MP1584 from Monolithic Power Systems. It is important to review the datasheets to ensure compatibility in terms of specifications like input voltage range, output current, and switching frequency.
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