計算工具
HV-MONITORING-RANGE-ACCURACY-CALC — TPS4141-Q1 Design Calculator
Spreadsheet calculator to help determine High Voltage measurement range and accuracy based on customer requirements.
TPS4141-Q1
- Qualified for automotive applications
- AEC-Q100 grade 1: –40°C to 125°C ambient operating temperature
- Integrated high-voltage resistor divider
- 30MΩ total resistance, precision matched divider
- No exposed high-impedance nodes improves measurement integrity from board contaminants
- Integrated high-voltage disconnect switch
- 1200V standoff voltage, uni-directional blocking
- <1.5µA leakage at TA = 105°C
- High accuracy divider and precision buffer amplifier
- Buffered output for easy interfacing to analog-to-digital converters
- Dynamically selectable gain settings to maximize accuracy across high-voltage sensing range
- Typical gain error ± 0.15%
- Maximum input offset error ± 240mV
- Support for uni-directional and bi-directional voltage sensing up to ±1200V
- Dynamic switching between uni-directional and bi-directional voltage sensing operation
- Low supply current
- 5mA ON state current
- 5.5µA OFF state current
- SOIC (DWQ-11) package
- Creepage and clearance ≥ 8mm from high-voltage sensing pin to all other pins
- Functional Safety Capable
- Documentation available to aid in ISO 26262 and IEC 61508 system design
The TPS4141-Q1 is a high-voltage, precision matched resistor divider with an integrated programmable-gain amplifier. The TPS4141-Q1 also integrates a high-voltage switch to allow for connecting or disconnecting the high-voltage sense pin. The device is designed for automotive and industrial applications which require accurate, high-voltage measurements.
The TPS4141-Q1 programmable-gain amplifier supports four divider ratios using DIV0 and DIV1 inputs. DIV0 and DIV1 can be set to fixed divider ratios and can also dynamically change while in operation. This allows for matching the amplifier output (AOUT) to the full-scale input voltage of the analog-to-digital signal chain, improving accuracy over the entire voltage sensing range of interest.
The TPS4141-Q1 supports uni-directional or bi-directional voltage measurement. Supplying an external precision voltage reference from REF to HVGND supports bi-directional voltage measurement. Switching between bi-directional and uni-directional voltage sensing during operation is possible using DIV0 and DIV1. Connecting REF to HVGND provides uni-directional voltage sensing only.
The TPS4141-Q1 integrates a high-voltage switch with a standoff voltage greater than 1200V from the high-voltage sense pin (HV) to ground (HVGND). The switch provides uni-directional current blocking from HV to HVGND when disconnected.
技術文件
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| 重要文件 | 類型 | 標題 | 格式選項 | 日期 |
|---|---|---|---|---|
| * | Data sheet | TPS4141-Q1 Automotive 1200V Configurable Precision Resistor Divider With Integrated Switch datasheet (Rev. B) | PDF | HTML | 2026年 7月 10日 |
| Functional safety information | TPS4141-Q1 Functional Safety FIT Rate, FMD and Pin FMA | PDF | HTML | 2026年 7月 13日 | |
| Application note | Using Integrated Designs to Optimize High-Voltage Measurement | PDF | HTML | 2025年 8月 4日 |
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)。
開發板
TPS4141Q1EVM — TPS4141-Q1 評估模組
TPS4141Q1EVM 是包含多個測試點和跳線的硬體評估模組 (EVM)，可全面評估裝置的性能與功能。此評估模組包含將 TPS4141Q1 設計為較佳應用電源系統一部分之前，用於測試與評估此設計所需的所有項目。TPS4141Q1EVM 可獨立使用，也可選擇搭配外部微控制器來驅動裝置的啟用與組態邏輯訊號。透過使用此評估模組，可啟用並檢視完整的應用功能，例如：實現最佳化 ADC 性能的可調式感測電壓增益，以及雙向電壓監控功能。此 EVM 採用 SOIC 封裝，並搭載 TPS4141Q1。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (DWQ) | 11 | Ultra Librarian |
訂購與品質
內含資訊：
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中的可靠性監測
內含資訊：
- 晶圓廠位置
- 組裝地點
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。