TPS2120
- Wide operating range: 2.8 V to 22 V
- Absolute maximum input voltage of 24 V
- Low RON resistance:
- TPS2120: 62 mΩ (typical)
- TPS2121: 56 mΩ (typical)
- Adjustable overvoltage supervisor (OVx):
- Accuracy < ±5%
- Adjustable priority supervisor (PR1):
- Accuracy < ±5%
- TPS2121 Supports external voltage reference (CP2) with an accuracy of <1%
- Output current limit (ILM):
- TPS2120: 1 A – 3 A
- TPS2121: 1 A – 4.5 A
- Channel status indication (ST)
- Adjustable input settling time (SS)
- Adjustable output soft start time (SS)
- TPS2121 Fast output switchover (tSW): 5 µs (typical)
- Low Iq from enabled input: 200 µA (typical)
- Low Iq from disabled input: 10 µA (Typical)
- Manual input source selection (OVx)
- Over temperature protection (OTP)
The TPS212x devices are Dual-Input, Single-Output (DISO) Power Multiplexer (MUX) that are well suited for a variety of systems having multiple power sources. The devices will Automatically Detect, Select, and Seamlessly Transition between available inputs.
Priority can be automatically given to the highest input voltage or manually assigned to a lower voltage input to support both ORing and Source Selection operations. A priority voltage supervisor is used to select an input source.
An Ideal Diode operation is used to seamlessly transition between input sources. During switchover, the voltage drop is controlled to block reverse current before it happens and provide uninterrupted power to the load with minimal hold-up capacitance.
Current limiting is used during startup and switchover to protect against overcurrent events, and also protects the device during normal operation. The output current limit can be adjusted with a single external resistor.
The TPS212x devices are available in WCSP and small VQFN-HR package options characterized for operation for a temperature range of –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 | TPS212x 2.8-V to 22-V Priority Power MUX with Seamless Switchover datasheet (Rev. F) | 2020/8/28 | |||
| 應用說明 | Basics of Power MUX (Rev. A) | PDF | HTML | 2020/10/20 | |||
| 電子書 | 11 Ways to Protect Your Power Path | 2019/7/3 |
設計與開發
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TPS2120EVM-042 — 適合優先功率多工器應用的 TPS2120 評估模組
TPS212x EVM 是一款適用於 TI TPS212x 系列雙輸入、單輸出電源多工器的評估模組。此裝置可自動偵測、選擇並無縫轉換兩個電源供應器，各電源供應器的運作電壓為 2.7V 至 22V。採用 VSON hot-rod 封裝的 TPS2121 裝置可提供高達 4A 的電流，而採用 WCSP 封裝的 TPS2120 則可處理高達 3A 的電流。此使用指南包含 EVM 電路圖、電路板佈局、物料清單、以及正確操作 EVM 的必要說明。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| DSBGA (YFP) | 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。