TVS1801
- Protection against 1 kV, 42-Ω IEC 61000-4-5 surge test for industrial signal lines
- Bidirectional polarity enables protection against bipolar signaling or miswiring conditions
- Clamping voltage of 27.4 V at 30 A of 8/20 µs surge current
- Standoff voltage: ±18 V
- Small 3 mm × 3 mm SON footprint
- Survives over 5,000 repetitive strikes of 30-A 8/20 µs surge current at 125°C
- Robust surge protection
- IEC61000-4-5 (8/20 µs): 30 A
- IEC61643-321 (10/1000 µs): 4.5 A
- Low leakage current
- 0.4 nA typical at 27°C
- 280 nA maximum at 85°C
- Low capacitance: 65 pF
- Integrated level 4 IEC 61000-4-2 ESD protection
The TVS1801 device shunts up to 30 A of IEC 61000-4-5 fault current to protect systems from high-power transients or lightning strikes. The device survives the common industrial signal line EMC requirement of 1-kV IEC 61000-4-5 open circuit voltage coupled through a 42-Ω impedance. The TVS1801 uses a feedback mechanism to ensure precise flat clamping during a fault, keeping system exposure lower than traditional TVS diodes. The tight voltage regulation allows designers to confidently select system components with a lower voltage tolerance, lowering system costs and complexity without sacrificing robustness. The TVS1801 has a ±18-V operating range to enable operation in systems that require protection against reverse wiring conditions.
In addition, the TVS1801 is available in a small SON footprint designed for space constrained applications, offering a significant size reduction compared to standard SMA and SMB packages. Low device leakage and capacitance ensure a minimal effect on the protected line. To ensure robust protection over the lifetime of the product, TI tests the TVS1801 against 5000 repetitive surge strikes at 125°C with no shift in device performance.
The TVS1801 is part of TI’s Flat-Clamp family of surge devices. For a deeper look at the Flat-Clamp family, refer to the Flat-Clamp Surge Protection Technology for Efficient System Protection white paper.
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 | TVS1801 18-V Bidirectional Flat-Clamp Surge Protection Device datasheet (Rev. B) | PDF | HTML | 2022/3/5 | ||
| Application brief | Protecting I/O modules from surge events | 2019/2/4 | ||||
| Application brief | TVS Surge Rating: Power vs. Current | 2018/11/12 | ||||
| 白皮書 | Demystifying surge protection | 2018/11/6 | ||||
| 使用指南 | Flat Clamp TVS Evaluation Module—Adaptor Boards | 2018/9/10 | ||||
| 應用說明 | How to select a Surge Diode | 2018/8/29 |
設計與開發
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FLAT-CLAMP-TVS-EVM — TVSxx0x 精密突波防護二極體評估模組
TIDA-010008 — 適合電網應用瞬態保護的平箝制 TVS 架構參考設計
TIDA-010089 — 雙象限、15V、8A、可編程線性直流電源供應器參考設計
此參考設計展現低雜訊有效率的雙向電源供應器，可實現低於 ±0.02% 全刻度 (FS) 電流與電壓控制準確度。此設計利用類比回饋迴路進行精確電流控制，並實作電壓追蹤電路，將來源模式線性級的功率消耗降到最低。此實作方式可實現 120W 輸出功率，並可在外部冷卻下汲取高達 25W。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSON (DRB) | 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。