TPS54231
- 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 2 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
Fold Back and Thermal Shutdown Protection - Available in Easy-to-Use SOIC8 Package
- Supported by WEBENCH® Software Tool
(www.TI.com/WEBENCH) - APPLICATIONS
- Consumer Applications such as Set-Top Boxes,
CPE Equipment, LCD Displays, Peripherals, and
Battery Chargers - Industrial and Car Audio Power Supplies
- 5-V, 12-V and 24-V Distributed Power Systems
- Consumer Applications such as Set-Top Boxes,
WEBENCH Is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners
The TPS54231 device is a 2-V, 2-A non-synchronous buck converter that integrates a low RDS(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 startup and transient conditions. A cycle-by-cycle current limit scheme, frequency fold back and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54231 device is available in an 8-pin SOIC package that has 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 | TPS54231 2-A, 28-V Input, Step-Down DC-DC Converter With Eco-mode™ datasheet (Rev. D) | PDF | HTML | 2014/10/24 | ||
| 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 | 800VA Pure Sine Wave Inverter's Reference Design (Rev. A) | PDF | HTML | 2017/8/1 | |||
| 應用說明 | Using TPS54335A to Create an Inverting Power Supply (Rev. A) | 2017/7/19 | ||||
| 應用說明 | Understanding Eco-mode(TM) Operation | 2016/12/5 | ||||
| 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 |
設計與開發
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TPS54231EVM-372 — TPS54231 28V 輸入、3.3V 輸出、2A 評估模組
The TPS54231EVM-372 is a fully assembled and tested circuit for evaluating the TPS54231 synchronous step-down SWIFT™ converter. The EVM converts a 7-V to 28-V input voltage to a regulated 3.3-V output voltage that delivers up to 2 A. The switching frequency is internally set at a nominal 570 (...)
SWIFTINV-CALC — SWIFT™ Converter Inverting Buck/Boost Calculator
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 (...)
TIDA-010055 — 非隔離電源架構，具有用於保護繼電器模組的診斷參考設計
TIDEP0036 — 使用 TMS320C6657 實作高效率 OPUS 轉碼器解決方案的參考設計
TIDEP0036 參考設計提供可在 TMS320C6657 裝置上輕鬆執行的 TI 最佳化 Opus 編碼器/解碼器範例。由於 Opus 支援多種位元率、訊框大小及取樣率（這些全都具有低延遲），因此適用於語音通訊、網路音訊，甚至高性能音訊處理應用。 此設計還特別強調在 DSP 上實作 Opus 編解碼器，相較於通用處理器（例如 ARM）所達成的效能提升。 根據在通用處理器上執行的代碼最佳化程度，在 C66x TI DSP 核心上實作 Opus 編解碼器的性能是實作 ARM CORTEX A-15 的 3 倍。TMS320C66x DSP 同時支援音訊和視訊編解碼器。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (D) | 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。