現在提供此產品的更新版本
功能相同，但針腳輸出與所比較的裝置不同。
LMR14050-Q1
- Qualified for automotive applications
- AEC-Q100 qualified with the following results:
- Device temperature grade 1: –40°C to 125°C ambient operating temperature range
- Device HBM ESD classification level H1C
- Device CDM ESD classification level C4A
- 4V to 40V input range
- 5A continuous output current
- Ultra-low 40µA operating quiescent current
- 90mΩ high-side MOSFET
- 75ns minimum switch-on time
- Current mode control
- Adjustable switching frequency from 200kHz to 2.5MHz
- Frequency synchronization to external clock
- Spread spectrum option for reduced EMI
- Internal compensation for ease of use
- High duty cycle operation supported
- Precision enable input
- 1µA shutdown current
- External soft start
- Thermal, overvoltage, and short protection
- 8-Pin HSOIC with PowerPAD™ package
The LMR14050-Q1 is a 40V, 5A step down regulator with an integrated high-side MOSFET. With a wide input range from 4V to 40V, the device is designed for various applications from industrial to automotive for power conditioning from unregulated sources. An extended family is available in 2A and 3.5A options in pin-to-pin compatible packages, including LMR14020-Q1 and LMR14030-Q1. The regulator quiescent current is 40µA in sleep mode, which is designed for battery powered systems. An ultra-low 1µA current in shutdown mode can further prolong battery life. A wide adjustable switching frequency range allows either efficiency or external component size to be optimized. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This feature also minimizes the external components of the device. A precision enable input allows simplification of regulator control and system power sequencing. The device also has built-in protection features such as cycle-by-cycle current limit, thermal sensing and shutdown due to excessive power dissipation, and output overvoltage protection.
The LMR14050-Q1 is available in an 8-pin HSOIC or 10-pin WSON package with exposed pad for low thermal resistance.
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 | LMR14050-Q1 SIMPLE SWITCHER® Power Converter, 40V, 5A, Automotive, Step-Down Converter With 40µA IQ datasheet (Rev. B) | PDF | HTML | 2024/12/20 | ||
| 應用說明 | Reduce Conducted EMI in Automotive Buck Converter Applications | 2019/7/31 | ||||
| 應用說明 | How to Evaluate Junction Temperature Properly with Thermal Metrics (Rev. B) | 2019/3/29 | ||||
| 應用說明 | How SYNC Logic Affects EMI Performance for Dual-Channel Buck Converters | 2018/4/27 | ||||
| 技術文章 | There are more ways than you think to reduce conducted EMI | PDF | HTML | 2018/4/17 | |||
| 應用說明 | Low Conducted EMI Power Solution for Automotive Digital Cockpit With LMR14050 an | 2018/2/7 | ||||
| 應用說明 | Design Feedforward Capacitor for LMR14020 | 2017/12/20 | ||||
| 應用說明 | How to Evaluate the Maximum Inductor in Internal Compensation PCM Buck Converter | 2017/9/20 |
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)。
LMR14050QDPREVM — LMR14050QDPR 寬輸入電壓降壓轉換器評估模組
LMR14050SEVM — LMR14050S 降壓式轉換器評估模組
LMR14050SEVM 是完全組裝過且經測試的電路，可用於評估 LMR14050S 的降壓轉換器。LMR14050SEVM 的運作輸入電壓範圍為 7V 至 36V（額定電壓為 12V），並可提供 5.0V 或 3.3V (5A) 的輸出。該電路板也配備跳線連接器，以啟用或停用轉換器運作、變更輸出電壓以及與外部時脈同步。電路板還具備用於回饋迴路量測的 AC 訊號注入端子。
TIDA-00887 — 具有電池短路保護的車用 2.4A 雙連接埠 USB 集線器參考設計
TIDA-00887 由雙埠 USB 2.0 集線器組成，具有由 TPD3S716-Q1 提供的兩個下游連接埠上的電池短路 (STB) 和短路保護功能。如果未連接上游裝置，則兩個下游連接埠均可配置為自訂分壓器模式或由 TUSB4020BI-Q1 USB 2.0 集線器提供的專用充電連接埠 (DCP)。 連接上游時，TUSB4020 集線器支援透過 CDP 進行充電。連接埠會根據所連接的可攜式裝置自動在分壓器模式、CDP 模式和 DCP 模式之間切換，以便為所連接的裝置提供最快的充電速率。
此參考設計與 TIDA-00845 類似，但移除了系統內 STB 模擬器，並新增了 2.4A (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
| WSON (DPR) | 10 | 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。