TPS38
- Wide supply voltage range: 2.7 V to 65 V
-
Functional Safety-Capable targeted
- Documentation available to aid functional safety system design
- 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:
- Channel 1: Open-Drain or Push-Pull
- Channel 2: Open-Drain
The TPS38 is a 65 V input voltage detector with 1 µA I DD, 1% accuracy, and with a fast 10 µs detection time. This device can be connected directly to 12 V / 24 V automotive battery system for continuous monitoring of over (OV) or under (UV) voltage conditions; with its internal resistor divider, it offers the smallest total solution size. Wide hysteresis voltage options are available to ignore cold crank, start-stop and various car battery voltage transients. Built-in hysteresis on the SENSE pins prevents false reset signals when monitoring a supply voltage rail.
The separate VDD and SENSE pins allow for the redundancy sought by high-reliability automotive systems and SENSE 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.
The TPS38 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. TPS38 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 | TPS38 Wide VIN 65 V Dual Channel Overvoltage or Undervoltage (OV or UV) Detector with Programmable Sense and Reset Function datasheet (Rev. A) | PDF | HTML | 2023/9/8 | ||
| 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 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
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。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DSK) | 10 | Ultra Librarian |