TPS61381-Q1
- AEC-Q100 qualified for automotive applications
- Device temperature grade 1: –40°C to 125°C ambient operating temperature range
-
Functional Safety-Capable
- Documentation available to aid functional safety system design
- I2C programmable LDO charger
- Supports charger input voltage (VOUT Pin) up to 21V, absmax up to 40V to withstand load dump
- Supports multi-chemistry battery charging profile of 1-5 cell NiMH, 1-2 cell Li-Ion, LiFePO4, 1-4 cell super capacitor
- Programmable charging current 50mA and 100mA
- Wide battery voltage operating range 0V to 12V
- Programmable charging timer up to 32h
- NTC thermistor input to monitor battery temperature
- Programmable boost converter supporting
12V car battery back-up power system
- Programmable output voltage range: 5V to 12V
- Programmable boost average input current limit from 5A to 15A
- Back-up battery (BUB) voltage in boost mode: 0.5V to 12V
- Minimum 3V for start up
- Can start up at 1V when Vout>5V
- <20us automatic transition into the boost mode when 12V system voltage drops
- Backup battery
State-of-Health(SOH) detection
- Adjustable discharge current from 0A to 1.5A
- Multi-signal analog output(AVI pin) of battery voltage, discharge current and battery temperature
- Lower quiescent current and leakage current
- 20µA quiescent current in standby mode
- < 1µA shutdown current
- < 1µA leakage current for pins connected to the backup battery
- EMI mitigation
- 400kHz fix switching frequency
- Optional programmable spread spectrum
-
3mm × 4mm 25-pin package with wettable flank
The TPS61381-Q1 is 400kHz, 40V, 15A automotive bi-directional boost converter/ LDO charger with battery state of health detection function designed for back-up power systems like TBOX or e-call. The converter supports absmax voltage up to 40V on VOUT pin to withstand load-dump condition and supports direct connection with 12V car battery.
The TPS61381-Q1 integrates I2C configurable LDO charger supporting NiMH, Li-Ion, LiFePO4, super capacitor.
TPS61381-Q1 integrates boost function that operates over 0.5V to 12V BUB voltage and 5-12V output voltage. The device applies fix frequency peak current control scheme with optional spread spectrum to minimize EMI. The boost function supports 5A-15A programmable average current limit.
The TPS61381-Q1 integrates battery health detection feature which discharge the battery with a constant current and detects the voltage drop across the battery internal resistance.
The TPS61381-Q1 is available in a 3mm × 4mm QFN package with wettable flank. Care must be taken when designing the PCB with TPS61381-Q1, view for details.
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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 | TPS61381-Q1 Automotive 400kHz, 40V, 15A Boost Converter with LDO Charger and Battery State of Health Detection datasheet (Rev. A) | PDF | HTML | 2026/3/9 | ||
| 應用說明 | Supercapacitor Backup Power Supply for Dying Gasp Application | PDF | HTML | 2026/4/10 | |||
| 功能安全資訊 | TPS61381-Q1, TPS61382-Q1, TPS61383-Q1, and TPS61382A-Q1 Functional Safety FIT Rate, FMD and Pin FMA | PDF | HTML | 2025/12/8 | |||
| 應用說明 | TPS61381-Q1 Schematic and Layout Guideline | PDF | HTML | 2025/12/1 |
設計與開發
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TPS61381QEVM-126 — TPS61381-Q1 評估模組
TPS61381QEVM-126 可在 0V 至 12V 的廣泛備用電池電壓範圍及 0V-40V 的主電池 (VBAT 埠) 電壓範圍中運作，以實現雙向運作。EVM 在升壓模式下以 3.6V BUB 和 6.2V 輸出支援高達 7.5A 負載的輸出，並在充電器模式下支援 50-100mA 充電電流。TPS61381QEVM-126 可在升壓模式下支援優於 2.5% 的輸出電壓調節準確度，並在充電器模式下支援優於 1% 的電壓準確度。裝置功能可使用 I2C 介面調整。
TPS61381-DESIGN-CALCULATION-TOOL — TPS61381-Q1 Calculation Tool
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN-FCRLF (RAV) | 24 | 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。