Overview
The TPS5430DDARG4, produced by Texas Instruments, is a high-performance, 3A step-down converter that is part of the SWIFT™ family of dc/dc regulators. This device is designed to provide high output current with a wide input voltage range, making it suitable for various power supply applications. The TPS5430 integrates a low-resistance, high-side N-channel MOSFET and features a high-efficiency design with up to 95% efficiency. It is available in a thermally enhanced, 8-pin SO PowerPAD™ integrated circuit package, which aids in heat dissipation and reduces design complexity.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Input Voltage Range | 5.5V to 36V | |
| Output Current | Up to 3A continuous (4A peak) | |
| Output Voltage Range | Adjustable down to 1.22V with 1.5% initial accuracy | |
| Switching Frequency | Fixed 500kHz | |
| High-Side MOSFET On-Resistance | 100mΩ | VIN = 12 V, VBOOT-SW = 4.5 V |
| Operating Junction Temperature Range | –40°C to 125°C | |
| Package Type | 8-pin SO PowerPAD™ | Thermally enhanced |
| Overcurrent Protection | High-side peak current limit: 4.0 to 6.0 A | |
| Thermal Shutdown | Yes | |
| Enable Voltage | VEN(R): 1.3 V, VEN(F): 0.5 V, VEN(H): 325 mV | Rising and falling thresholds with hysteresis |
Key Features
- Wide input voltage range: 5.5V to 36V
- Up to 3A continuous (4A peak) output current
- High efficiency up to 95% enabled by 100mΩ integrated MOSFET switch
- Wide output voltage range: adjustable down to 1.22V with 1.5% initial accuracy
- Internal compensation minimizes external parts count
- Fixed 500kHz switching frequency for small filter size
- Improved line regulation and transient response by input voltage feedforward
- System protected by overcurrent limiting, overvoltage protection, and thermal shutdown
- Available in small thermally enhanced 8-pin SO PowerPAD™ integrated circuit package
- Create a custom design using the TPS5430 with the WEBENCH® Power Designer
Applications
- Consumer electronics: set-top boxes, DVD players, LCD displays
- Industrial and car audio power supplies
- Battery chargers and high-power LED supplies
- 12V and 24V distributed power systems
Q & A
- What is the input voltage range of the TPS5430?
The input voltage range of the TPS5430 is 5.5V to 36V.
- What is the maximum continuous output current of the TPS5430?
The TPS5430 can provide up to 3A continuous (4A peak) output current.
- What is the switching frequency of the TPS5430?
The switching frequency is fixed at 500kHz.
- What type of package is the TPS5430 available in?
The TPS5430 is available in a thermally enhanced, 8-pin SO PowerPAD™ integrated circuit package.
- Does the TPS5430 have overcurrent protection?
Yes, the TPS5430 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).
- How does the TPS5430 improve line regulation and transient response?
The TPS5430 improves line regulation and transient response through input voltage feedforward).
- Can the TPS5430 be used in high-power LED supplies?
Yes, the TPS5430 can be used in high-power LED supplies among other applications).
- What is the typical efficiency of the TPS5430?
The TPS5430 can achieve high efficiency up to 95%).
- Is the TPS5430 internally compensated?
Yes, the TPS5430 feedback loop is internally compensated to minimize external parts count).
