TPS37
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Functional Safety - Capable
- Documentation available to functional safety system design
- Wide supply voltage range: 2.7 V to 65 V
- SENSE and RESET pins are 65 V graded
- Low quiescent current: 1 µA (typical)
- Flexible and wide voltage threshold options
- 2.7 V to 36 V (1.5% maximum accuracy)
- 800 mV option (1% maximum accuracy)
- Built-in hysteresis (V HYS)
- Percentage options: 2% to 13% (1% steps)
- Fixed options: V TH < 8 V = 0.5 V, 1 V, 1.5 V, 2 V, 2.5 V
- Programmable reset time delay
- 10 nF = 12.8 ms, 10 µF = 12.8 s
- Programmable sense time delay
- 10 nF = 1.28 ms, 10 µF = 1.28 s
- Manual Reset ( MR) feature
- Output topology: Open-Drain or Push-Pull
The TPS37 is a family of wide input range and low quiescent current window supervisors for fast detection of overvoltage (OV) and undervoltage (UV) conditions. Each device includes a precision internal reference, two independent and configurable voltage comparators and integrated resistor dividers. The TPS37 can be connected directly to and monitor 12 V / 24 V supply rails in a variety of industrial applications including factory automation, motor drives, building automation and others. Built-in hysteresis on the SENSE pins prevents false reset signals when monitoring a supply voltage rail.
The separate VDD and SENSE pins allow redundancy sought by high-reliability systems. SENSE is decoupled from VDD and can monitor higher and lower voltages than VDD. Optional use of external resistors are supported by the high impedance input of the SENSE pins. CTSx and CTRx pins allow delay adjustability on the rising and falling edges of the RESET signals. Also, CTSx functions as a debouncer by ignoring voltage glitches on the monitored voltage rails; CTRx operates as a manual reset ( MR) that can be used to force a system reset.
TPS37 is available in a WSON or SOT-23 package. The central pad is non-conductive to increase the creepage between VDD and GND per guidelines in IEC60664. TPS37 operates over –40°C to +125°C T A.
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 | TPS37 Wide VIN 65 V Dual Channel Overvoltage & Undervoltage (OV & UV) Detector with Programmable Sense and Reset Delay Function datasheet (Rev. E) | PDF | HTML | 2023/8/24 | ||
| 應用說明 | Common Applications of Wide VIN Overvoltage and Undervoltage Supervisors | PDF | HTML | 2023/9/19 | |||
| Application brief | Using Voltage Supervisors in High Voltage Applications (Rev. B) | PDF | HTML | 2023/2/20 | |||
| 功能安全資訊 | TPS37 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 2021/5/12 | |||
| Application brief | High Voltage – Fast Power Fault Detection by Monitoring 24V AC Systems Using TPS | PDF | HTML | 2021/4/12 |
設計與開發
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TPS37AQ1EVM — 適用於具備超低 IQ 與時間延遲功能的 65-V 窗型監控器的 TPS37 評估模組
TPS37 評估模組 (EVM) 是用於評估 TPS37 和 TPS38 產品系列的平台。這些產品可在高達 65 V 下運作，同時維持低靜態電流，並提供可調整電壓閾值、可調整重設、感測時間延遲，以及可配置的手動重設。
TPS37AQ1EVM 支援所有裝置輸出拓撲結構，包括用於不同輸出配置的跨接器上的分流。如需詳細資訊請參閱產品規格表。
TPS37-ADJ-CALC — TPS37, TPS38, and TPS3760 adjustable-resistor and time-delay calculator
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DSK) | 10 | Ultra Librarian |