The TPS54231DR is a 2A, 28V input, step-down (buck) converter from Texas Instruments, renowned for its high efficiency, wide input voltage range, and compact design. Operating at a fixed frequency of 570kHz, it integrates Eco-mode™ for improved efficiency under light loads. Its versatility makes it ideal for various applications, including consumer electronics, industrial systems, and telecommunications equipment.
What Are the Key Features of the TPS54231DR?
The TPS54231DR boasts several features that enhance its performance and applicability:
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Wide Input Voltage Range: 3.5V to 28V, accommodating various power sources.
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High Output Current: Delivers up to 2A, suitable for powering multiple components.
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Fixed Switching Frequency: 570kHz operation allows for smaller external components.
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Eco-mode™: Improves efficiency at light loads by reducing switching losses.
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Low Shutdown Current: Typical shutdown quiescent current of 1μA, ideal for battery-powered applications.
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Integrated High-Side MOSFET: Simplifies design and reduces component count.
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Adjustable Output Voltage: 0.8V to 25V, providing flexibility for various applications.
How Does the TPS54231DR Compare to Similar Models?
When selecting a step-down converter, it’s essential to compare key specifications:
| Model | Input Voltage Range | Output Current | Switching Frequency | Eco-mode™ | Package |
|---|---|---|---|---|---|
| TPS54231DR | 3.5V – 28V | 2A | 570kHz | Yes | 8-SOIC |
| TPS54232 | 3.5V – 28V | 2A | 1MHz | Yes | 8-SOIC |
| TPS54331 | 3.5V – 28V | 3A | 570kHz | Yes | 8-SOIC |
| TPS54332 | 3.5V – 28V | 3.5A | 1MHz | Yes | 8-SOIC |
The TPS54231DR offers a balanced combination of input voltage range, output current, and switching frequency, making it a versatile choice for various applications.
What Are the Typical Applications for the TPS54231DR?
The TPS54231DR is suitable for a wide range of applications due to its efficiency and flexibility:
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Consumer Electronics: Set-top boxes, LCD displays, and battery chargers.
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Industrial Systems: Car audio power supplies and distributed power systems.
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Telecommunications Equipment: Customer-premises equipment (CPE) and networking devices.
Its ability to operate efficiently across various load conditions makes it ideal for systems requiring reliable power conversion.
How Does Eco-mode™ Enhance Efficiency?
Eco-mode™ is a feature that improves efficiency during light load conditions by reducing the switching frequency, thereby minimizing switching losses. This mode is automatically activated when the peak inductor current drops below a certain threshold, ensuring optimal performance without compromising output voltage regulation.
What Are the Design Considerations for Implementing the TPS54231DR?
When designing with the TPS54231DR, consider the following:
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Input and Output Capacitors: Select appropriate values to ensure voltage stability and minimize ripple.
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Inductor Selection: Choose an inductor that can handle the desired current without saturation.
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Thermal Management: Ensure adequate heat dissipation, especially in high-current applications.
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PCB Layout: Follow best practices for minimizing noise and optimizing performance.
Proper component selection and layout are crucial for achieving the desired performance and reliability.
Buying Tips
When purchasing the TPS54231DR, consider the following:
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Authorized Distributors: Buy from reputable sources to ensure authenticity.
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Stock Availability: Check inventory levels to avoid delays.
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Bulk Pricing: Consider bulk purchases for cost savings.
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Technical Support: Ensure access to datasheets and application notes.
Fly-Wing Technology (HK) Co., Limited has been consistently dedicated to assisting customers in finding hard-to-find parts quickly and accurately, as well as acquiring new and original parts at competitive prices since 2012. With warehouses in Hong Kong and a global supplier network, they offer optimized inventory and reduced procurement cycles, ensuring quality electronic components at competitive prices.
Electronic Components Expert Views
“The TPS54231DR’s integration of Eco-mode™ and its wide input voltage range make it a go-to solution for designers seeking efficiency and flexibility in power management.” – Electronics Design Engineer
“Its compact 8-SOIC package and robust performance simplify the design process, especially in space-constrained applications.” – Power Systems Analyst
FAQ
Q: What is the maximum output current of the TPS54231DR?
A: The TPS54231DR can deliver up to 2A of continuous output current.
Q: Can the output voltage be adjusted?
A: Yes, the output voltage is adjustable from 0.8V to 25V using external resistors.
Q: Is the TPS54231DR suitable for battery-powered applications?
A: Yes, its low shutdown quiescent current of 1μA makes it ideal for battery-powered systems.
Q: What is the switching frequency of the TPS54231DR?
A: It operates at a fixed frequency of 570kHz.
Q: Does the TPS54231DR have thermal protection?
A: Yes, it includes thermal shutdown protection to prevent damage from overheating.
The TPS54231DR is a high-performance nonsynchronous step-down converter produced by Texas Instruments. It integrates a low RDS(on) high-side MOSFET and is designed for high efficiency under light-load conditions with pulse-skipping Eco-mode™ functionality, making it suitable for various power management applications.
Technical Specifications
- Input Voltage Range: 3.5V to 28V.
- Output Voltage: Adjustable down to 0.8V.
- Output Current: Supports up to 2A continuous output current.
- Switching Frequency: Fixed at 570 kHz.
- Quiescent Current: Typical shutdown quiescent current of 1μA.
- Package: Easy-to-use SOIC8.
- Operating Temperature Range: -40°C to +150°C.
Features
- High Efficiency: Automatically activates pulse-skipping Eco-mode? for efficiency under light loads.
- Low Power Consumption: Typical shutdown quiescent current of 1μA, ideal for battery-powered applications.
- Overvoltage Protection: Integrated overvoltage transient protection circuitry to limit voltage overshoot.
- Programmable UVLO Threshold: Programs input UVLO hysteresis via a resistor divider.
- Cycle-by-Cycle Current Limiting: Provides cycle-by-cycle current limiting, frequency foldback, and thermal shutdown for safe operation during overload conditions.
- Adjustable Soft Start: Limits inrush current for a stable startup.
Applications
- Consumer Electronics: Such as set-top boxes, CPE equipment, LCD monitors, peripherals, and battery chargers.
- Industrial Power: For industrial equipment and automation systems.
- Automotive Audio: Provides stable power for car audio systems.
- Distributed Power Systems: Suitable for 5V, 12V, and 24V distributed power systems.
Conclusion
The TPS54231DR is a high-performance, low-power step-down converter. Its high efficiency, low power consumption, and comprehensive protection features make it an excellent choice for various power management applications. The integrated Eco-mode™ and overvoltage protection ensure stable operation across different load conditions.
