Texas Instruments TPS54331 Buck Converter – Efficient 3A Step-Down Regulator
De TPS54331 by Texas Instruments is a highly integrated synchronous buck converter capable of delivering up to 3A output current across a wide input voltage range of 3.5V to 28V. With its compact footprint and efficiency-focused architecture, it is ideally suited for industrial, consumer, and automotive applications where board space and power performance are critical.
This regulator combines a 0.8V reference, integrated low RDS(aan) high-side and low-side MOSFETs, and advanced features such as frequency foldback, thermal shutdown, cycle-by-cycle current limiting, and soft start. It enables designers to achieve robust, reliable DC/DC conversion in compact systems with tight thermal constraints.
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Electrical Specifications and Key Parameters
| Parameter | Waarde | Eenheid |
|---|---|---|
| Ingangsspanningsbereik | 3.5 to 28 | V |
| Uitgangsstroom | 3 | A |
| Schakelfrequentie | 300 kHz to 2.5 MHz | Hz |
| Bereik uitgangsspanning | 0.8 to 22 | V |
| Ruststroom | 110 | µA |
| Bedrijfstemperatuurbereik | -40 to +150 | °C |
| Pakket | 8-pins SOIC | – |
Why Choose TPS54331 for Industrial Step-Down Regulation?
Compared to similar buck converters, the TPS54331 offers high flexibility in power supply design with fewer external components and improved thermal performance. Its low quiescent current and wide frequency range help designers meet efficiency goals and optimize EMI characteristics. The product is widely recommended in industrial-grade designs featured by IC-fabrikant, known for precision and quality assurance.
Key Features and Functional Benefits
- 3A Continuous Output: Supports medium-power embedded systems and industrial control modules.
- Wide Input Range: Compatible with 12V and 24V systems commonly used in automation and consumer designs.
- Adjustable Switching Frequency: Provides design flexibility for space and thermal optimization.
- Built-in Protections: Thermal shutdown, current limit, and undervoltage lockout enhance long-term reliability.
- Soft Start and Internal Compensation: Prevents inrush current and simplifies external circuitry.
Typische toepassingen
- Industrial Distributed Power Systems
- Automotive Infotainment and Control Modules
- High-Efficiency Embedded Controllers
- Consumer Electronics Power Regulation
- Low-Voltage FPGA and Microcontroller Power Rails
Veelgestelde vragen (FAQ)
What is the maximum output current for the TPS54331?
The TPS54331 supports up to 3A continuous output current, suitable for a wide range of industrial and embedded systems.
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Can this converter be used in automotive environments?
Yes, with an input range up to 28V and a temperature range of -40°C to 150°C, it is fully capable of handling automotive-grade applications.
What are the primary benefits of the synchronous buck architecture?
Synchronous design allows for higher efficiency by reducing power loss during switching. This is especially important in compact designs with thermal constraints.
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Does the TPS54331 require external compensation?
No, it includes internal loop compensation, which simplifies PCB design and improves reliability by minimizing component count.
What package types are available for the TPS54331?
It is offered in an 8-pin SOIC package that balances compact board footprint with thermal dissipation capabilities.
