TPS51397A
- Input voltage range: 4.5 V to 24 V
- Output voltage range: 0.6 V to 5.5 V
- Supports 10-A continuous output current
- D-CAP3™ architecture control for fast transient response
- 0.6 V ± 1% feedback voltage accuracy (25°C)
- Integrated 17-mΩ and 5.9-mΩ FETs
- ULQ™ operation (110 µA) to enable long battery life during system standby
- Selectable Eco-mode™ and Out-of-Audio™ by MODE pin
- 500-kHz and 800-kHz selectable switching frequency
- Adjustable soft-start time with default internal 1.2 ms
- Large duty cycle operation
- Integrated power-good indicator
- Built-in output discharge function
- Cycle-by-cycle overcurrent protection
- Latched output OV and UV protections
- Non-latched UVLO and OT protections
- -40°C to 125°C Operating junction temperature
- 20-pin 3.0-mm × 3.0-mm HotRod™ VQFN package
- Pin-to-pin compatible with 12-A TPS56C230
- Create a custom design using the TPS51397A with the WEBENCH® Power Designer
The device is a monolithic 10-A synchronous buck converter with integrated MOSFETs that enable high efficiency and offers ease-of-use with minimum external component count for space-conscious power systems.
The TPS51397A employs D-CAP3™ control that provides fast transient response and excellent line and load regulation with internal compensation. The ULQ™ (Ultra Low Quiescent) feature is extremely beneficial for long battery life in low power operation. The large duty operation greatly improves the load transient performance when input voltage is low.
The MODE pin can be used to set Eco-mode™ or Out-of-Audio™ (OOA) mode for light-load operation and 500-kHz or 800-kHz switching frequency. The Eco-mode™ maintains high efficiency during light load operation. The OOA mode keeps the switching frequency above audible frequency with minimum reduction in efficiency.
The device supports both internal and external soft-start options. It has an internal fixed soft-start time of 1.2 ms. If the application needs a longer soft-start time, the external SS pin can be connected to an external capacitor.
The TPS51397A integrates a power-good indicator and provides an output discharge function. It provides complete protection including OVP, UVP, OCP, OTP, and UVLO. The device is available in a 20-pin 3.0-mm x 3.0-mm HotRod™ package and the junction temperature is specified from –40°C to 125°C.
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 | TPS51397A 4.5-V to 24-V, 10-A Synchronous Buck Converter with ULQ™ Operation datasheet (Rev. A) | PDF | HTML | 2020/10/12 | ||
| 應用說明 | Peak Current Mode Converter Secondary Stage Filter Design for Low Ripple Power – Part II: Hybrid Sense Network | PDF | HTML | 2024/2/27 | |||
| 應用說明 | Measuring the Bode Plot of D-CAP™, D-CAP2™, and D-CAP3™ DC/DC Converters (Rev. A) | PDF | HTML | 2023/4/21 | |||
| 應用說明 | Stability Analysis and Design of D-CAP2 and D-CAP3 Converter – Part 2 | PDF | HTML | 2021/8/2 | |||
| 應用說明 | Stability Analysis and Design of D-CAP2 and D-CAP3 Converter – Part 1 | PDF | HTML | 2021/6/9 | |||
| 應用說明 | Non-Isolated DC/DC Solutions for Alder Lake in Notebook Computing Applications | PDF | HTML | 2021/1/8 |
設計與開發
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TPS51397AEVM — 10-A 同步降壓穩壓器評估模組
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Intel® Tiger Lake 微架構等先進處理器和平台需要負載點 (POL) 解決方案，來滿足記憶體、低功耗 CPU 軌，以及一系列充電電池或 12V 輸入匯流排的 3.3V 和 5V 軌需求。
此電源供應設計以最新 DC/DC 轉換器為亮點，展示可因應 PC 應用中一般 Tiger Lake 電源需求的功能。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN-HR (RJE) | 20 | 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。