規格
| 屬性 | 價值 |
| Package / Case | Bulk,Tube |
| Series | SWIFT™, Eco-Mode™ |
| Part Status | Active |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 3.5V |
| Voltage - Input (Max) | 28V |
| Voltage - Output (Min/Fixed) | 0.8V |
| Voltage - Output (Max) | 26.04V |
| Current - Output | 5A |
| Frequency - Switching | 570kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
概述
Description
The TPS54531DDA is a high-efficiency, synchronous step-down DC-DC converter from Texas Instruments. It is designed to deliver a continuous output current of up to 5A with an input voltage range of 4.5V to 28V, making it suitable for a variety of applications including consumer electronics, industrial equipment, and distributed power systems.
The device features a fixed frequency of 570 kHz, which helps in minimizing output ripple and external component size. It incorporates a high-side MOSFET and a low-side MOSFET with a low on-resistance for efficient power conversion. The TPS54531DDA supports both continuous and discontinuous conduction modes, improving efficiency at light loads.
Additional features include an adjustable output voltage, soft-start capability to limit inrush current, and built-in protection mechanisms such as cycle-by-cycle current limit, thermal shutdown, and undervoltage lockout. It typically comes in an 8-pin SO PowerPAD package, allowing for enhanced thermal performance. Overall, the TPS54531DDA is a versatile and robust solution for step-down power conversion needs.
The device features a fixed frequency of 570 kHz, which helps in minimizing output ripple and external component size. It incorporates a high-side MOSFET and a low-side MOSFET with a low on-resistance for efficient power conversion. The TPS54531DDA supports both continuous and discontinuous conduction modes, improving efficiency at light loads.
Additional features include an adjustable output voltage, soft-start capability to limit inrush current, and built-in protection mechanisms such as cycle-by-cycle current limit, thermal shutdown, and undervoltage lockout. It typically comes in an 8-pin SO PowerPAD package, allowing for enhanced thermal performance. Overall, the TPS54531DDA is a versatile and robust solution for step-down power conversion needs.
Equivalent
The TPS54531DDA is a 5A step-down converter from Texas Instruments. Equivalent products include:
1. LM2675 (Texas Instruments) - 5V, 1A Step-Down Voltage Regulator.
2. LM22675 (Texas Instruments) - 5A Step-Down Voltage Regulator.
3. LTC3635 (Analog Devices) - High Efficiency Step-Down Converter.
4. MP1584 (Monolithic Power Systems) - 3A Step-Down Converter.
5. MIC28512 (Microchip) - 4A Step-Down Regulator.
These alternatives offer similar functionality, but verify specifications for compatibility.
1. LM2675 (Texas Instruments) - 5V, 1A Step-Down Voltage Regulator.
2. LM22675 (Texas Instruments) - 5A Step-Down Voltage Regulator.
3. LTC3635 (Analog Devices) - High Efficiency Step-Down Converter.
4. MP1584 (Monolithic Power Systems) - 3A Step-Down Converter.
5. MIC28512 (Microchip) - 4A Step-Down Regulator.
These alternatives offer similar functionality, but verify specifications for compatibility.
Features
The TPS54531DDA is a DC-DC buck converter with the following key features:
1. Input Voltage Range: Operates from a wide input range of 4.5 V to 28 V, making it suitable for a variety of applications.
2. Output Current: Capable of delivering up to 5 A of continuous output current.
3. Efficiency: High efficiency due to its synchronous step-down conversion, which is beneficial for power-sensitive applications.
4. Switching Frequency: Offers a fixed switching frequency of 570 kHz, optimizing the trade-off between size and efficiency.
5. Adjustable Output Voltage: The output voltage can be set via an external resistor divider, providing flexibility in design.
6. Protection Features: Includes built-in protections such as overcurrent protection, thermal shutdown, and undervoltage lockout.
7. Soft Start: Implements a soft-start feature to prevent inrush current during startup.
8. Package: Available in a space-saving 8-pin SOIC PowerPAD package, which improves thermal performance.
These features make the TPS54531DDA ideal for use in a variety of applications, including consumer electronics, communication equipment, and industrial systems.
1. Input Voltage Range: Operates from a wide input range of 4.5 V to 28 V, making it suitable for a variety of applications.
2. Output Current: Capable of delivering up to 5 A of continuous output current.
3. Efficiency: High efficiency due to its synchronous step-down conversion, which is beneficial for power-sensitive applications.
4. Switching Frequency: Offers a fixed switching frequency of 570 kHz, optimizing the trade-off between size and efficiency.
5. Adjustable Output Voltage: The output voltage can be set via an external resistor divider, providing flexibility in design.
6. Protection Features: Includes built-in protections such as overcurrent protection, thermal shutdown, and undervoltage lockout.
7. Soft Start: Implements a soft-start feature to prevent inrush current during startup.
8. Package: Available in a space-saving 8-pin SOIC PowerPAD package, which improves thermal performance.
These features make the TPS54531DDA ideal for use in a variety of applications, including consumer electronics, communication equipment, and industrial systems.
Pinout
The TPS54531DDA is a 5.5 A step-down regulator from Texas Instruments. It comes in an 8-pin SO PowerPAD package. Here is a brief overview of its pin functions:
1. BOOT: Connect a bootstrap capacitor for the high-side gate driver.
2. VIN: Input voltage supply pin.
3. SW: Switch node, connected to the output inductor.
4. GND: Ground reference for the device.
5. FB: Feedback pin to monitor the output voltage.
6. COMP: Compensation pin for external compensation network.
7. EN: Enable pin to turn the device on or off.
8. RT/CLK: Sets the switching frequency or synchronizes with an external clock.
The PowerPAD is an additional thermal pad located on the bottom of the package to enhance heat dissipation.
1. BOOT: Connect a bootstrap capacitor for the high-side gate driver.
2. VIN: Input voltage supply pin.
3. SW: Switch node, connected to the output inductor.
4. GND: Ground reference for the device.
5. FB: Feedback pin to monitor the output voltage.
6. COMP: Compensation pin for external compensation network.
7. EN: Enable pin to turn the device on or off.
8. RT/CLK: Sets the switching frequency or synchronizes with an external clock.
The PowerPAD is an additional thermal pad located on the bottom of the package to enhance heat dissipation.
Manufacturer
The TPS54531DDA is manufactured by Texas Instruments Incorporated (TI). Texas Instruments is a global technology company that designs and manufactures semiconductors and various integrated circuits, which are used in electronic equipment. They are known for developing analog chips and embedded processors, which are integral components in a wide range of applications including automotive, industrial, personal electronics, communications equipment, and enterprise systems. TI is a leader in the semiconductor industry and focuses on creating innovative products that help engineers solve their design challenges and push the boundaries of what’s possible in electronics.
Application
The TPS54531DDA is a step-down DC-DC converter commonly used in applications requiring efficient power management. Its application areas include:
1. Consumer Electronics: Powering processors and peripherals in smartphones, tablets, and laptops.
2. Industrial Equipment: Providing stable power for control systems, sensors, and communication devices.
3. Telecommunications: Supporting infrastructure equipment like routers and switches.
4. Automotive Systems: Supplying power to infotainment systems, dashboards, and other electronic components.
5. Embedded Systems: Used in microcontroller and FPGA power supply designs.
6. Networking Equipment: Powering network cards, modems, and wireless access points.
Its high efficiency and wide input voltage range make it versatile for various applications needing reliable voltage regulation.
1. Consumer Electronics: Powering processors and peripherals in smartphones, tablets, and laptops.
2. Industrial Equipment: Providing stable power for control systems, sensors, and communication devices.
3. Telecommunications: Supporting infrastructure equipment like routers and switches.
4. Automotive Systems: Supplying power to infotainment systems, dashboards, and other electronic components.
5. Embedded Systems: Used in microcontroller and FPGA power supply designs.
6. Networking Equipment: Powering network cards, modems, and wireless access points.
Its high efficiency and wide input voltage range make it versatile for various applications needing reliable voltage regulation.
Package
The TPS54531DDA is a DC-DC converter from Texas Instruments, typically housed in an 8-pin SO PowerPAD (DDA) package. This package includes a thermally-enhanced PowerPAD to improve heat dissipation and is suitable for surface-mount applications.
