LM5171-Q1

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車用、80-V 雙通道雙向降壓 - 升壓控制器

產品詳細資料

Vin (min) (V) 1 Vin (max) (V) 75 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Boost, Buck, Buck/Boost Rating Automotive Vout (min) (V) 3 Vout (max) (V) 80 Features Adjustable current limit, Enable, Frequency synchronization, Multiple Outputs, Phase Interleaving, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 1000 TI functional safety category Functional Safety-Capable
Vin (min) (V) 1 Vin (max) (V) 75 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Boost, Buck, Buck/Boost Rating Automotive Vout (min) (V) 3 Vout (max) (V) 80 Features Adjustable current limit, Enable, Frequency synchronization, Multiple Outputs, Phase Interleaving, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 1000 TI functional safety category Functional Safety-Capable
HTQFP (PHP) 48 81 mm² 9 x 9
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient operating range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Functional Safety-Capable
  • 85-V HV-port and 80-V LV-port max ratings
  • 1% Typical Accuracy of bidirectional current regulation
  • 1% Typical Accuracy of channel current monitoring
  • I 2C Interface for monitoring and diagnosis
  • Built-in 3.5V 1% reference voltage
  • Integrated 5V 10mA bias supply
  • 5-A Peak half-bridge gate drivers
  • Programmable or adaptive dead-time control
  • Programmable oscillator frequency up to 1MHz with optional synchronization to external clock
  • Independent channel enabling control inputs
  • Integrated both current and voltage loop control
  • Programmable cycle-by-cycle peak current limit
  • Over-temperature shutdown
  • HV and LV port overvoltage protection
  • Dynamically selectable diode emulation and forced PWM operation modes
  • Programmable soft-start timer
  • Support both multiphase and independent channel operations
  • Support urgent shutdown latch
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient operating range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Functional Safety-Capable
  • 85-V HV-port and 80-V LV-port max ratings
  • 1% Typical Accuracy of bidirectional current regulation
  • 1% Typical Accuracy of channel current monitoring
  • I 2C Interface for monitoring and diagnosis
  • Built-in 3.5V 1% reference voltage
  • Integrated 5V 10mA bias supply
  • 5-A Peak half-bridge gate drivers
  • Programmable or adaptive dead-time control
  • Programmable oscillator frequency up to 1MHz with optional synchronization to external clock
  • Independent channel enabling control inputs
  • Integrated both current and voltage loop control
  • Programmable cycle-by-cycle peak current limit
  • Over-temperature shutdown
  • HV and LV port overvoltage protection
  • Dynamically selectable diode emulation and forced PWM operation modes
  • Programmable soft-start timer
  • Support both multiphase and independent channel operations
  • Support urgent shutdown latch

The LM5171-Q1 controller provides the essential high voltage and precision elements of a dual-channel bidirectional converter for example is automotive 48-V and 12-V dual battery systems. It supports multiphase parallel operation with balanced current sharing in each phase, and it can also support independent channel bi-directional operations making it versatile as standalone controller operating as Multiphase Buck / Boost or independent Buck or Boost.

The dual-channel differential current sense amplifiers and dedicated channel current monitors achieve typical accuracy of 1%. The robust 5-A half-bridge gate drivers are capable of driving parallel MOSFETs for scaling more power per channel. The controller can be dynamically programmed to operate in either the diode emulation mode (DEM) or forced PWM (FPWM) mode. Versatile protection features include cycle-by-cycle current limiting, overvoltage protection at both HV and LV ports, and overtemperature protection and urgent shutdown latch.

The LM5171-Q1 controller provides the essential high voltage and precision elements of a dual-channel bidirectional converter for example is automotive 48-V and 12-V dual battery systems. It supports multiphase parallel operation with balanced current sharing in each phase, and it can also support independent channel bi-directional operations making it versatile as standalone controller operating as Multiphase Buck / Boost or independent Buck or Boost.

The dual-channel differential current sense amplifiers and dedicated channel current monitors achieve typical accuracy of 1%. The robust 5-A half-bridge gate drivers are capable of driving parallel MOSFETs for scaling more power per channel. The controller can be dynamically programmed to operate in either the diode emulation mode (DEM) or forced PWM (FPWM) mode. Versatile protection features include cycle-by-cycle current limiting, overvoltage protection at both HV and LV ports, and overtemperature protection and urgent shutdown latch.

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類型 標題 日期
* Data sheet LM5171-Q1 Dual Channel Bidirectional Controller datasheet PDF | HTML 2023年 4月 11日
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 2024年 4月 30日
Functional safety information LM5171-Q1 Functional Safety FIT, FMD, and Pin FMA (Rev. A) PDF | HTML 2023年 10月 6日
Certificate LM5171EVM-BIDIR EU Declaration of Conformity (DoC) 2023年 5月 5日

設計與開發

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開發板

LM5171EVM-BIDIR — LM5171 評估模組

LM5171EVM-BIDIR 評估模組 (EVM) 是一款雙相交錯雙向轉換器,是 48V 至 12V 雙電池系統應用的理想選擇。它是多相可堆疊的,具有可調整交錯角度及平衡電流分載。EVM 也包含各種跨接器,可針對許多不同應用實例配置電路。其中包括由微控制器或高功率單向降壓或升壓轉換器控制的功能。
使用指南: PDF | HTML
計算工具

LM5171-CALC LM5171-Q1 Quickstart Calculator

LM5171-Q1 Quickstart Calculator helps on design of the power stage, current loop and voltage loop. Component calculations for the controller are also included.
支援產品和硬體

支援產品和硬體

產品
AC/DC 和 DC/DC 控制器 (外部 FET)
LM5171-Q1 車用、80-V 雙通道雙向降壓 - 升壓控制器
硬體開發
開發板
LM5171EVM-BIDIR LM5171 評估模組
參考設計

PMP41079 — 適用於 H 類音訊放大器的雙相交錯式升壓轉換器參考設計

此參考設計展示了適用於 H 類音訊放大器應用的 450W 雙相交錯式升壓轉換器參考設計。為了向外部音訊放大器供電,控制器能夠追蹤來自放大器的 H 類控制訊號,並產生追蹤喇叭振幅的輸出電壓。因此,能夠實現最小的整體功耗和損耗。
Test report: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
HTQFP (PHP) 48 Ultra Librarian

訂購與品質

內含資訊:
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊:
  • 晶圓廠位置
  • 組裝地點

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