TPS54331
- 3.5 to 28-V input voltage range
- Adjustable output voltage down to 0.8 V
- Integrated 80-mΩ high-side MOSFET supports up to 3-A continuous output current
- High efficiency at light loads with a pulse skipping Eco-mode
- Fixed 570-kHz switching frequency
- Typical 1-µA shutdown quiescent current
- Adjustable slow-start limits inrush currents
- Programmable UVLO threshold
- Overvoltage transient protection
- Cycle-by-cycle current limit, frequency foldback, and thermal shutdown protection
- Available in easy-to-use SOIC8 package or thermally-enhanced SOIC8 PowerPAD™ integrated circuit package
- Create a custom design using the TPS54331 with the WEBENCH Power Designer
- Use TPS62933 for a 30 VIN converter with higher frequency, lower IQ and improved EMI
The TPS54331 device is a 28-V, 3-A non-synchronous buck converter that integrates a low R DS(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode feature is automatically activated. Furthermore, the 1-µA shutdown supply-current allows the device to be used in battery-powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during start-up and transient conditions. A cycle-by-cycle current-limit scheme, frequency foldback and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54331 device is available in an 8-pin SOIC package and 8-pin SO PowerPAD integrated circuit package that have been internally optimized to improve thermal performance.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TPS54331 3-A, 28-V Input, Step Down DC-DC Converter With Eco-mode datasheet (Rev. H) | PDF | HTML | 2023/10/10 | ||
| 應用說明 | Low Dropout Operation in a Buck Converter (Rev. A) | 2019/4/1 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 應用說明 | Understanding Eco-mode(TM) Operation | 2016/12/5 | ||||
| 應用說明 | Demystifying Type II and Type III Compensators Using Op-Amp and OTA for DC/DC Co | 2014/7/11 | ||||
| 應用說明 | Simple CC/CV Charger using TPS54331 | 2012/11/30 | ||||
| 應用說明 | Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) | 2012/10/26 | ||||
| 應用說明 | Designing Type III Compensation for Current Mode Step-Down Converters (Rev. A) | 2010/9/15 | ||||
| 類比設計期刊 | Efficiency of synchronous versus nonsynchronous buck converters | 2009/10/4 | ||||
| 應用說明 | Understanding and Applying Current-Mode Control Theory | 2007/8/19 | ||||
| 應用說明 | Modeling, Analysis and Compensation of the Current-Mode Converter | 1999/9/5 |
設計與開發
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TPS54331EVM-232 — TPS54331 28V 輸入、3.3V 輸出、3A 評估模組
The TPS54331EVM-232 is a fully assembled and tested circuit for evaluating the TPS54331 synchronous step-down SWIFT™ converter. The EVM converts a 3.5-V to 28-V input voltage to a regulated 3.3-V output voltage that delivers up to 3-A output. The switching frequency is internally set at a (...)
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The SWIFTINV-CALC Excel sheet is a complementary worksheet to the SLVA317 application note. The worksheet is used to calculate the external components needed to create a negative output voltage from a positive input voltage. The tool features several families of wide input voltage, current-mode (...)
SWIFTPOSNEG-CALC — TPS54160 Pos/Neg Calculation Utility Download
The SWIFTPosNeg-CALC Excel sheet is a complementary worksheet to the SLVA369 application note.
This worksheet is used to calculate the external components needed to create a dual output (i.e. positive and negative) power supply using a step-down switching regulator and catalog off the shelf coupled (...)
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| HSOIC (DDA) | 8 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。