LM5127-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +125°C, TA
- Functional Safety-Capable
- Suited for various architectures and scalable
- Triple-output synchronous controllers
- Flexible topology
- CH1: boost / buck topology
- CH2, CH3: two single phase bucks / dual-phase interleaved buck topology
- Enable pin and PGOOD indicator per channel
- Optional low IQ battery monitor
- Wide operating range for automotive applications
- 3.8-V to 42-V input operating range
- Minimum boost input 0.8 V when BIAS ≥ 3.8 V
- Boost output: adjustable up to 42 V
- Buck output: fixed 3.3 V, 5 V, or adj. 0.8 - 42 V
- Bypass operation when VSUPPLY>VLOAD (boost)
- LDO operation when VSUPPLY ≈ VLOAD (buck)
- Minimized battery drain
- Shutdown current ≤ 2.8 µA
- Automatic transition to low-IQ sleep mode
- Battery drain in sleep
- IQ≤ 14 µA when 3.3-V buck on
- IQ≤ 22 µA when 3.3-V and 5-V bucks on
- IQ≤ 32 µA when 3.3-V, 5-V bucks on and boost in bypass
- High efficiency using strong 5-V drivers
- Dual input VCC and VDD regulators
- Small and cost-effective solution
- Maximum switching frequency 2.2 MHz
- Internal boot diode (boost)
- Constant peak current limit
- Supports DCR inductor current sensing
- QFN-48 with wettable flanks
- Avoid AM band interference and crosstalk
- Optional clock synchronization
- Switching frequency from 100 kHz to 2.2 MHz
- Selectable switching mode (FPWM, diode emulation, and skip mode)
- EMI mitigation
- Optional programmable spread spectrum
- Programmability and flexibility
- Programmable wake-up and sleep threshold
- Dynamic switching frequency programming
- Adjustable soft start time
- Adjustable output using 0.8 V ±1% reference
- Adaptive dead-time control
- Integrated protection features
- Overcurrent protection
- Cycle-by-cycle peak current limit
- Optional hiccup mode protection (buck)
- Optional latch-off mode protection (buck)
- Overvoltage protection
- HB-SW short protection (boost)
- Thermal shutdown
- Overcurrent protection
The LM5127-Q1 is a full featured, wide input range three channel DC/DC controller which supports flexible topology (Boost/Buck) with peak current mode control. The device is designed as an integrated one-chip solution for the front-stage power supply in automotive infotainment, cluster, body control as well as ADAS systems. (continue on next page)
技術文件
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檢視所有 4 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM5127-Q1 2.2-MHz Wide VIN Automotive Front-stage Multi-rail DC/DC datasheet (Rev. A) | PDF | HTML | 2020年 12月 17日 |
| EVM User's guide | LM5127EVM-FLEX Evaluation Module (Rev. A) | PDF | HTML | 2020年 12月 16日 | |
| Functional safety information | LM5127-Q1 Functional Safety, FIT Rate and Failure Mode Distribution | PDF | HTML | 2020年 12月 11日 | |
| Certificate | LM5127EVM-FLEX EU RoHS Declaration of Conformity (DoC) (Rev. A) | 2020年 11月 25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
LM5127EVM-FLEX — LM5127 彈性拓撲評估模組
The LM5127EVM-FLEX showcases the features and performance of the LM5127-Q1 when configured with channel 1 as a pre-boost, and channel 2 and channel 3 configured as independent buck controllers. The input voltage range is 3V to 42V. The pre-boost can operate down to 3V during input transients, (...)
參考設計
PMP23194 — 適合包含主處理器與攝影機電源之車用 ADAS 的三輸出參考設計
此參考設計提供電力給汽車先進駕駛輔助系統 (ADAS)，為攝影機 (8 V)、控制器區域網路 (CAN) 通訊 (5 V) 及主處理器 (3.3 V) 供電。在整個汽車範圍內運作，包括電力浪湧至 34 V，以及因冷啟動而下降至 6 V。此設計採用低雜訊，符合嚴格的 CISPR 25 Class 5 排放要求，並包含輸入濾波器。此電路板專為簡易測試而設計，可提供跨接器來停用每個輸出，並針對 3.3-V 輸出的高電流提供板載動態負載。測試報告包含各輸出的運作數據，以及針對 CISPR 25 Class 5 進行排放掃描的完整設計。
Test report: PDF
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RGZ) | 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
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。