LM5169
- Functional Safety-Capable
- Designed for reliability in rugged applications
- Wide input voltage range of 6V to 120V absolute maximum
- Junction temperature range: –40°C to +150°C
- Fixed 3ms internal soft-start timer
- Peak and valley current-limit protection
- Input UVLO and thermal shutdown protection
- Designed for
scalable industrial power supplies and battery packs
- Low minimum on and off times of 50ns
- Adjustable switching frequency up to 1MHz
- Diode emulation for high light-load efficiency
- Auto mode with low quiescent current (< 10µA)
- FPWM for Fly-Buck converter capability
- 3µA shutdown quiescent current
- Pin-to-pin compatible with LM5164-Q1, LM5163-Q1, and LM5013-Q1
- Similar pinout and functionality to LM5017 and LM34927.
- Integration reduces design size
and cost
- COT mode control architecture
- Integrated 1.9Ω NFET buck switch
- Integrated 0.71Ω NFET synchronous rectifier
- 1.2V internal voltage reference
- No loop compensation components
- Internal VCC bias regulator and boot diode
- Open-drain power-good indicator
- Package options: SOIC PowerPAD™-8 integrated circuit package or WSON-8 package
The LM5169 and LM5168 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 50ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48V nominal input to low-voltage rails for reduced system complexity and design cost. The LM516x operates during input voltage dips as low as 6V, at nearly 100% duty cycle if needed, making the device 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 delivers up to 0.65A of output current and the LM5168 delivers up to 0.3A of output current. A constant on-time (COT) control architecture provides nearly constant switching frequency with excellent load and line transient response. The LM516x 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, 0.65A/0.3A, 120V Absolute Maximum, Step-Down Converter With Fly-Buck Converter Capability datasheet (Rev. B) | PDF | HTML | 2024/12/16 | ||
| 功能安全資訊 | LM5168 and LM5169 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) | PDF | HTML | 2024/11/11 | |||
| 證書 | LM5169PEVM EU RoHS Declaration of Conformity (DoC) | PDF | HTML | 2024/10/31 | |||
| 證書 | LM5169FEVM EU Declaration of Conformity (DoC) | 2024/8/27 | ||||
| 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。
LM5169FEVM — LM5169F 評估模組
LM5169F 評估模組 (EVM) 是返馳穩壓器,利用 LM5169FNGUR 產生穩壓 10V 輸出,能夠以 750kHz 的切換頻率,在變壓器的一次側供應 300mA 負載。在變壓器的二次側提供 10V 反射輸出,最高可提供達 300mA。LM5169FNGUR 是具備廣泛輸入電壓範圍、整合式功率 MOSFET、過電流保護及精密啟用功能的同步降壓轉換器。
LM5169PEVM — LM5169P 評估模組
SNVR520 — LM5169 Quick Start Calculator
LM5169-BUCK-FLY-BUCK-DESIGN-CALC — 適用於降壓和 Fly-Buck 設計的 LM5169 快速入門計算機
PMP41130 — 1.2KW 硬切換,全橋 (HSFB) 電信電源供應單元
PMP41130 展示了採用 UCD3138064、LMG3100 與 LMG2175 裝置進行數位控制之對稱式硬切換全橋 DC-DC 電源轉換器。此參考設計包含硬切換全橋 (HSFB) 轉換器所需之控制功能。PMP41130 接受 36VDC 至 60VDC 的 DC 輸入,並輸出額定 48VDC、全輸出負載功率 1200W 或全輸出電流 25A。在輸入電壓 36V、輸出功率 600W 的條件下,可達到 96.7% 的峰值效率。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (NGU) | 8 | Ultra Librarian |
| 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。