LM5171-Q1
- 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
- 85V HV-port and 80V LV-port max ratings
- 1% typical accuracy of bidirectional current regulation
- 1% typical accuracy of channel current monitoring
- I2C interface for monitoring and diagnosis
- Built-in 3.5V 1% reference voltage
- Integrated 5V 10mA bias supply
- 5A 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
- Supports both multiphase and independent channel operations
- Supports urgent shutdown latch
The LM5171-Q1 controller provides the high voltage and precision elements of a dual-channel bidirectional converter, examples include dual battery systems. The LM5171-Q1 supports multiphase parallel operation with balanced current sharing in each phase. The LM5171-Q1 also supports independent channel bi-directional operation 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 a typical accuracy of 1%. The robust 5A half-bridge gate drivers are capable of driving parallel MOSFETs for more power per channel. Program the controller dynamically to operate in either diode emulation mode (DEM) or forced PWM (FPWM) mode. Versatile protection features include cycle-by-cycle current limiting, overvoltage protection, overtemperature protection and urgent shutdown latch.
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 | LM5171-Q1 Dual Channel Bidirectional Controller datasheet (Rev. B) | PDF | HTML | 2025/9/29 | ||
| Application brief | Multiphase Operation of LM5171 | PDF | HTML | 2026/4/24 | |||
| Application brief | Seamless Bidirectional Operation of LM5171 | PDF | HTML | 2026/4/13 | |||
| 應用說明 | How to Use the Two Channels of LM5171 Independently | PDF | HTML | 2025/10/30 | |||
| 功能安全資訊 | LM5171-Q1 Functional Safety FIT, FMD, and Pin FMA (Rev. A) | PDF | HTML | 2023/10/6 | |||
| 證書 | LM5171EVM-BIDIR EU Declaration of Conformity (DoC) | 2023/5/5 | ||||
| 應用說明 | U-140 Average Current Mode Control of Switching Power Supplies | 1999/9/5 |
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)。
LM5171EVM-BIDIR — LM5171 評估模組
LM5171-CALC — LM5171-Q1 Quickstart Calculator
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。
| 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
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。