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LM51521-Q1

現行

具有停用旁路模式的車用 2.2-MHz大範圍 VIN 低 IQ 同步升壓控制器

產品詳細資料

Rating Automotive Topology Boost Vin (max) (V) 42 Vin (min) (V) 3.8 Vout (max) (V) 20 Vout (min) (V) 5 Control mode current mode Features Adjustable current limit, Enable, Frequency synchronization, Hiccup mode protection, Light-load efficiency, Spread Spectrum, Synchronous rectification, Tracking, UVLO adjustable EMI features Frequency Dithering, Spread Spectrum Duty cycle (max) (%) 94 Iq (typ) (A) 0.000011 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150
Rating Automotive Topology Boost Vin (max) (V) 42 Vin (min) (V) 3.8 Vout (max) (V) 20 Vout (min) (V) 5 Control mode current mode Features Adjustable current limit, Enable, Frequency synchronization, Hiccup mode protection, Light-load efficiency, Spread Spectrum, Synchronous rectification, Tracking, UVLO adjustable EMI features Frequency Dithering, Spread Spectrum Duty cycle (max) (%) 94 Iq (typ) (A) 0.000011 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150
VQFN (RGR) 20 12.25 mm² (3.5 mm × 3.5 mm)
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Suited for wide operating range automotive battery powered applications
    • 3.8-V to 42-V input operating range
    • Dynamically programmable VOUT from 5 V to 20 V (protection up to 57 V)
    • Minimum boost input 0.8 V when BIAS ≥ 3.8 V
    • Bypass operation when VSUPPLY > VLOAD (LM5152 only, see the device comparison table)
  • Minimized battery drain
    • Shutdown current ≤ 3 µA
    • Automatic mode transition
    • Battery drain in deep sleep ≤ 11 µA (bypass operation, charge pump off)
    • Battery drain in deep sleep ≤ 33 µA (bypass operation, charge pump on)
    • BIAS IQ in sleep ≤ 13 µA (skip mode)
    • Strong 5-V MOSFET drivers
  • Small solution size and low cost
    • 2.2-MHz maximum switching frequency
    • Internal boot diode
    • Constant peak current limit over VIN
    • Supports DCR inductor current sensing
    • QFN-20 with wettable flanks
  • Avoid AM band interference and crosstalk
    • Optional clock synchronization
    • 100-kHz to 2.2-MHz switching frequency
    • Selectable switching mode (FPWM, diode emulation, skip mode)
  • EMI mitigation
    • Optional programmable spread spectrum
    • Lead-less package
  • Programmability and flexibility
    • Dynamic VOUT tracking
    • Dynamic switching frequency programming
    • Programmable line UVLO
    • Adjustable soft start
    • Adaptive dead time
    • Boost STATUS indicator
  • Integrated protection features
    • Cycle-by-cycle peak current limit
    • Overvoltage protection
    • HB-SW short protection
    • Thermal shutdown
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Suited for wide operating range automotive battery powered applications
    • 3.8-V to 42-V input operating range
    • Dynamically programmable VOUT from 5 V to 20 V (protection up to 57 V)
    • Minimum boost input 0.8 V when BIAS ≥ 3.8 V
    • Bypass operation when VSUPPLY > VLOAD (LM5152 only, see the device comparison table)
  • Minimized battery drain
    • Shutdown current ≤ 3 µA
    • Automatic mode transition
    • Battery drain in deep sleep ≤ 11 µA (bypass operation, charge pump off)
    • Battery drain in deep sleep ≤ 33 µA (bypass operation, charge pump on)
    • BIAS IQ in sleep ≤ 13 µA (skip mode)
    • Strong 5-V MOSFET drivers
  • Small solution size and low cost
    • 2.2-MHz maximum switching frequency
    • Internal boot diode
    • Constant peak current limit over VIN
    • Supports DCR inductor current sensing
    • QFN-20 with wettable flanks
  • Avoid AM band interference and crosstalk
    • Optional clock synchronization
    • 100-kHz to 2.2-MHz switching frequency
    • Selectable switching mode (FPWM, diode emulation, skip mode)
  • EMI mitigation
    • Optional programmable spread spectrum
    • Lead-less package
  • Programmability and flexibility
    • Dynamic VOUT tracking
    • Dynamic switching frequency programming
    • Programmable line UVLO
    • Adjustable soft start
    • Adaptive dead time
    • Boost STATUS indicator
  • Integrated protection features
    • Cycle-by-cycle peak current limit
    • Overvoltage protection
    • HB-SW short protection
    • Thermal shutdown

The LM5152x-Q1 (LM5152-Q1 and LM51521-Q1) device is a wide input range synchronous boost controller that employs peak current mode control.

The LM5152x-Q1 (LM5152-Q1 and LM51521-Q1) device is a wide input range synchronous boost controller that employs peak current mode control.

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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 LM5152x-Q1 Automotive Low-IQ Synchronous Boost Controller for Start-Stop/Backup Battery Power Supply datasheet (Rev. A) PDF | HTML 2022/4/14
功能安全資訊 LM5152x-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 2022/3/30

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

LM5152EVM-BST — 用於升壓控制器的 LM5152 評估模組

LM5152EVM-BST 評估模組 (EVM) 展示了 LM5152-Q1 寬輸入電壓同步升壓控制器的功能和性能,其中包括:

  • 低 IQ 操作
  • 內部回饋電阻器
  • 當 VIN 大於 VOUT 調節目標時執行旁路模式操作
  • 動態輸出電壓追蹤
  • 狀態指示燈
  • 可編程頻率
  • 時脈抖動
  • 可編程 UVLO。
EVM 的設計可在低至 2.5V 升壓輸入進行汽車啟動時,在 440kHz 維持最小 8.5V 輸出。
使用指南: PDF | HTML
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計算工具

SLVRBL6 — LM51521-Q1 Boost Controller Quickstart Design Tool

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參考設計

PMP31011 — 24-W 低輸入電壓同步升壓轉換器參考設計

此參考設計使用 LM51521-Q1 升壓控制器供應 8-V、3-A 負載,已針對在輸入處以單電池芯超級電容器運作進行最佳化。轉換器可將超級電容器放電至最低 1.0 V,以運用盡可能多的儲存能源在緊急情況下開啟車門,此時 KL30 汽車電瓶電壓並不存在。
支援產品和硬體
封裝 針腳 CAD 符號、佔位空間與 3D 模型
VQFN (RGR) 20 Ultra Librarian

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