LM5168

現行

具有 Fly-Buck™ 功能的 6-V 至 120-V 大範圍 VIN、300-mA DC-DC 轉換器

產品詳細資料

Iout (max) (A) 0.3 Vin (min) (V) 6 Vin (max) (V) 120 Topology Buck, Flybuck Type Converter Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 1000 Features Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, UVLO adjustable Control mode Constant on-time (COT) Vout (min) (V) 1.2 Vout (max) (V) 48 Rating Catalog Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.00001
Iout (max) (A) 0.3 Vin (min) (V) 6 Vin (max) (V) 120 Topology Buck, Flybuck Type Converter Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 1000 Features Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, UVLO adjustable Control mode Constant on-time (COT) Vout (min) (V) 1.2 Vout (max) (V) 48 Rating Catalog Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.00001
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • 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 industrial power supplies and battery packs
    • 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, LM5163, LM5017, and 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
  • 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 industrial power supplies and battery packs
    • 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, LM5163, LM5017, and 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 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 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 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 delivers up to 0.65-A of output current and the LM5168 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 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.

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 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 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 delivers up to 0.65-A of output current and the LM5168 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 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.

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類型 標題 日期
* Data sheet LM5169, LM5168 0.65-A/0.3-A, 120-V, Step-Down Converter with Fly-Buck Converter Capability datasheet (Rev. A) PDF | HTML 2022年 7月 18日
Application note Inverting Buck-Boost Application for the LM5168 PDF | HTML 2023年 2月 24日
Application note Design Considerations of Stacked BQ769x2 With High-Side N-MOSFET PDF | HTML 2023年 2月 9日
Functional safety information LM5168 and LM5169 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 2022年 9月 1日
Functional safety information LM516x-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. A) PDF | HTML 2022年 9月 1日
More literature LM5168PEVM EU RoHS Declaration of Conformity (DoC) 2022年 8月 4日
EVM User's guide LM5168PEVM EVM User's Guide PDF | HTML 2022年 8月 2日
User guide LM5168FEVM EVM User's Guide PDF | HTML 2021年 11月 18日
Certificate LM5168FEVM EU RoHS Declaration of Conformity (DoC) 2021年 10月 20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

LM5168FEVM — LM5168 評估模組,115-V fly-buck 穩壓器

LM5168FEVM 評估模組 (EVM) 是完全組裝且經過測試的電路,適用於評估 LM5168,而這是一款採用同步整流的 115-V DC/DC Fly-Buck 穩壓器,可在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 0.25 A 下以 750-kHz 切換頻率提供調節的 10-V 輸出。透過返馳拓撲提供額外的 10-V 浮動輸出。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 LM5168-Q1 (...)
使用指南: PDF | HTML
TI.com 無法提供
開發板

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。

使用指南: PDF | HTML
TI.com 無法提供
模擬型號

LM5168F PSpice Unencrypted Transient Model

SNVMCA0.ZIP (262 KB) - PSpice Model
CAD/CAE 符號

LM5168FEVM Altium Design Files

SNVR517.ZIP (18313 KB)
計算工具

SNVR520 LM5169 Quick Start Calculator

支援產品和硬體

支援產品和硬體

產品
AC/DC & DC/DC converters (integrated FET)
LM5168 具有 Fly-Buck™ 功能的 6-V 至 120-V 大範圍 VIN、300-mA DC-DC 轉換器 LM5168-Q1 具有 Fly-Buck™ 功能的車用 6-V 至 120-V 大範圍 VIN、300-mA DC-DC 轉換器 LM5169 具有 Fly-Buck™ 功能的 6-V 至 120-V 大範圍 VIN、650-mA DC/DC 轉換器
參考設計

TIDA-010247 — 具堆疊式電池監控器的高壓側 N-MOSFET 控制 (高達 32s) 電池組參考設計

此參考設計為高壓側 N 通道 MOSFET 控制 (高達 32s) 電池組,且使用堆疊式 BQ769x2 電池監控器系列。此設計可監控每個電池芯電壓、電池組電流、電池芯和 MOSFET 溫度,並保護電池組,以確保安全使用。高壓側 N 通道 MOSFET 架構與最佳化驅動電路,可提供簡易的開關控制。此參考設計可實現低待機與運送模式耗電量,並可將兩組之間的電流差距最佳化。此參考設計適用於高電池芯數、高電壓及電池組應用。
Design guide: PDF
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  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 資格摘要
  • 進行中可靠性監測
內含資訊:
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  • 組裝地點

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