LM5168-Q1
- AEC-Q100-qualified for automotive applications
- Device temperature grade 1: –40°C to +125°C, ambient temperature range
- Designed for reliability in rugged applications
- Wide input voltage range of 6 V to 120 V
- Junction temperature range: –40°C to +150°C
- Fixed 3-ms internal soft-start timer
- Peak and valley current-limit protection
- Input UVLO and thermal shutdown protection
- Suited for scalable automotive HEV/EV power
supplies
- Low minimum on and off times of 50 ns
- Adjustable switching frequency up to 1 MHz
- Diode emulation for high light-load efficiency
- Auto mode with low-quiescent current (< 10 µA)
- FPWM for fly-buck converter capability
- 3-µA shutdown quiescent current
- Pin-to-pin compatible with LM5164-Q1, LM5163-Q1, LM5017, LM5013-Q1and LM34927
- Integration reduces solution size
and cost
- COT mode control architecture
- Integrated 1.9-Ω NFET buck switch
- Integrated 0.71-Ω NFET synchronous rectifier
- 1.2-V internal voltage reference
- No loop compensation components
- Internal VCC bias regulator and boot diode
- Open-drain power-good indicator
- SOIC PowerPAD™ integrated circuit package
The LM5169 -Q1 and LM5168 -Q1 synchronous buck converters are designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. A minimum controllable on time of 50 ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48-V nominal input to low-voltage rails for reduced system complexity and solution cost. The LM516x -Q1 operates during input voltage dips as low as 6 V, at nearly 100% duty cycle if needed, making it an excellent choice for wide input supply range industrial and high cell count battery pack applications.
With integrated high-side and low-side power MOSFETs, the LM5169 -Q1 delivers up to 0.65-A of output current and the LM5168 -Q1 delivers up to 0.3-A of output current. A constant on-time (COT) control architecture provides nearly constant switching frequency with excellent load and line transient response. The LM516x -Q1 is available in FPWM or auto mode versions. FPWM mode provides forced CCM operation across the entire load range supporting isolated fly-buck converter applications. Auto mode enables ultra-low IQ and diode emulation mode operation for high light-load efficiency.
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 | LM516x-Q1 0.65/0.3-A, 120-V Step-Down Converter w/ Fly-Buck Converter Capability datasheet (Rev. A) | PDF | HTML | 2022/9/8 | ||
| Product overview | Isolated Power Topologies for PLC I/O Modules and Other Low-Power Applications (Rev. A) | PDF | HTML | 2024/8/20 | |||
| 應用說明 | Inverting Buck-Boost Application for the LM5168 | PDF | HTML | 2023/2/24 | |||
| 功能安全資訊 | LM516x-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. A) | PDF | HTML | 2022/9/1 |
設計與開發
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LM5168FEVM — LM5168 評估模組，115-V fly-buck 穩壓器
LM5168PEVM — LM5168P 115-V DC/DC 降壓穩壓器評估模組
LM5168P 評估模組 (EVM) 是採用同步整流的 115-V DC/DC 降壓穩壓器，可在較小型元件封裝中實現高轉換效率。EVM 可在 20 V 至 115 V (最大 120 V) 的廣泛輸入電壓範圍內運作，並在高達 0.3 A 下以 500 kHz 切換頻率提供調節的 12 V 輸出。輸出電壓的設定點準確度高於 1.5%，並可使用外部電阻分壓器進行調節。此模組設計採用 LM5168P 同步降壓轉換器，具備廣泛輸入電壓範圍、廣泛工作週期範圍、整合式高壓側與低壓側電源 MOSFET、先進過電流防護與精密啟用。
SNVR520 — LM5169 Quick Start Calculator
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此參考設計實作最多可用於 18 個電池芯的電池監控單元。該單元可透過菊花鍊方式連接，以涵蓋客車、商用車輛、以及在高於 72V 電壓下工作的兩輪和三輪車輛中所使用的典型高壓電池續航里程。此參考設計具備有線與無線介接選項，可並排比較有線與無線電池管理系統 (BMS) 性能。
TIDA-020101 — 車用 48V 300W HVAC 幫浦、鼓風機和風扇參考設計
此參考設計展示 48V、300W 峰值智慧型馬達無刷直流電 (BLDC) 實作。離散式方法可實現直徑小至 55mm、精巧且靈活的外型尺寸。本設計能將低功率睡眠模式維持在 100μA 以下。此設計運用 TI 半導體促進高效率運作。此架構為要求高功率、高精密度與小型化的嚴苛車用暖通空調 (HVAC) 應用，奠定了堅實基礎。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HSOIC (DDA) | 8 | 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。