Overview
The TPS5430DDAG4, produced by Texas Instruments, is a high-output-current pulse-width modulation (PWM) converter that integrates a low-resistance high-side N-channel MOSFET. This device is part of the SWIFT family of dc/dc regulators and is designed for high-performance power supply applications. It features a wide input voltage range, high efficiency, and robust protection mechanisms, making it suitable for various industrial, automotive, and consumer electronics applications.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 5.5 V to 36 V |
| Output Current | Up to 3 A continuous (4 A peak) |
| Output Voltage Range | Adjustable down to 1.22 V with 1.5% initial accuracy |
| Switching Frequency | Fixed at 500 kHz |
| Efficiency | Up to 95% enabled by 100 mΩ integrated MOSFET switch |
| Operating Junction Temperature Range | –40°C to 125°C |
| Package | 8-pin SOIC PowerPAD™ |
| Number of Pins | 8 |
| Quiescent Current | Typically 15 µA in shutdown |
Key Features
- Wide input voltage range: 5.5 V to 36 V
- High efficiency up to 95% enabled by the integrated 100 mΩ MOSFET switch
- Adjustable output voltage down to 1.22 V with 1.5% initial accuracy
- Internal compensation minimizes external parts count
- Fixed 500 kHz switching frequency for compact filter design
- Improved line regulation and transient response through input voltage feed-forward
- System protection includes overcurrent limiting, overvoltage protection, and thermal shutdown
- Active-high enable with low shutdown supply current
- Thermally enhanced 8-pin SOIC PowerPAD™ package
Applications
- Industrial and car audio power supplies
- Battery chargers and high-power LED supplies
- 12-V and 24-V distributed power systems
- Consumer electronics such as set-top boxes, DVD players, and LCD displays
Q & A
- What is the input voltage range of the TPS5430?
The input voltage range is 5.5 V to 36 V. - What is the maximum continuous output current of the TPS5430?
The maximum continuous output current is up to 3 A, with a peak of 4 A. - What is the switching frequency of the TPS5430?
The switching frequency is fixed at 500 kHz. - What are the key protection features of the TPS5430?
The device includes overcurrent limiting, overvoltage protection, and thermal shutdown. - What is the operating junction temperature range of the TPS5430?
The operating junction temperature range is –40°C to 125°C. - In what package is the TPS5430 available?
The TPS5430 is available in a thermally enhanced 8-pin SOIC PowerPAD™ package. - How does the TPS5430 manage inrush currents during startup?
The device includes an internally set slow-start circuit to limit inrush currents. - Can the output voltage of the TPS5430 be adjusted?
Yes, the output voltage can be adjusted down to 1.22 V with 1.5% initial accuracy. - What tools are available to aid in designing with the TPS5430?
Texas Instruments provides evaluation modules and the WEBENCH Power Designer software tool. - What is the quiescent current in shutdown mode?
The quiescent current is typically 15 µA in shutdown mode.
