LM7480-Q1
- AEC-Q100 qualified for automotive applications
- Device temperature grade 1: –40°C to +125°C ambient operating temperature range
- Device HBM ESD classification level 2
- Device CDM ESD classification level C4B
- 3-V to 65-V input range
- Reverse input protection down to –65 V
- Drives external back-to-back N-Channel MOSFETs in common drain and common source configurations
- Ideal diode operation with 10.5-mV A to C forward voltage drop regulation (LM74800-Q1)
- Low reverse detection threshold (–4.5 mV) with fast response (0.5 µs)
- 20-mA peak gate (DGATE) turnon current
- 2.6-A peak DGATE turnoff current
- Adjustable overvoltage protection
- Low 2.87-µA shutdown current (EN/UVLO=Low)
- Meets automotive ISO7637 transient requirements with a suitable TVS diode
- Available in space saving 12-Pin WSON package
The LM7480x-Q1 ideal diode controller drives and controls external back to back N-Channel MOSFETs to emulate an ideal diode rectifier with power path ON/OFF control and overvoltage protection. The wide input supply of 3 V to 65 V allows protection and control of 12-V and 24-V automotive battery powered ECUs. The device can withstand and protect the loads from negative supply voltages down to –65 V. An integrated ideal diode controller (DGATE) drives the first MOSFET to replace a Schottky diode for reverse input protection and output voltage holdup. With a second MOSFET in the power path the device allows load disconnect (ON/OFF control) and overvoltage protection using HGATE control. The device features an adjustable overvoltage cut-off protection feature. LM7480-Q1 has two variants, LM74800-Q1 and LM74801-Q1. LM74800-Q1 employs reverse current blocking using linear regulation and comparator scheme vs. LM74801-Q1 which supports comparator based scheme. With Common Drain configuration of the power MOSFETs, the mid-point can be utilized for OR-ing designs using an another ideal diode. The LM7480x-Q1 has a maximum voltage rating of 65 V. The loads can be protected from extended overvoltage transients like 200-V Unsuppressed Load Dumps in 24-V Battery systems by configuring the device with external MOSFETs in Common Source topology.
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 | LM7480-Q1 Ideal Diode Controller with Load Dump Protection datasheet (Rev. C) | PDF | HTML | 2020/12/8 | ||
| 功能安全資訊 | LM7480-Q1 Functional Safety FIT Rate, Failure Mode Distribution, and Pin FMA | PDF | HTML | 2024/2/6 | |||
| Application brief | Priority Power MUX using Ideal Diodes in Automotive Zonal Modules | PDF | HTML | 2023/5/23 | |||
| 應用說明 | Basics of Ideal Diodes (Rev. B) | PDF | HTML | 2021/10/5 | |||
| 類比設計期刊 | Automotive EMC-compliant reverse-battery protection with ideal-diode controllers | 2020/9/22 | ||||
| Application brief | Single Point Failure Protection for Motor Drives and PLC Systems | PDF | HTML | 2020/6/30 | |||
| 應用說明 | Ideal Diode Controllers for Active Rectification of AC Voltage Ripple | PDF | HTML | 2020/6/30 | |||
| 功能安全資訊 | 簡化汽車及工業領域的功 能安全認證 | Download English Version | 2020/6/9 | |||
| 應用說明 | Six System Architectures With Robust Reverse Battery Protection | 2020/4/30 |
設計與開發
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LM74800EVM-CD — LM74800-Q1 理想二極體控制器評估模組
TI 的評估模組 LM74800EVM-CD 可協助設計人員評估 LM7480-Q1 理想二極體控制器 (LM74800QDRR 和 LM74801QDRR) 在反向電池保護應用中的運作及性能。此評估模組展示 LM7480-Q1 如何控制兩個背對背 N 通道功率 MOSFET，首先連接理想二極體 MOSFET，接著連接第二個 MOSFET，以進行切換輸出及電源路徑切斷。
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DRR) | 12 | 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。