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
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | LM7480-Q1 Ideal Diode Controller with Load Dump Protection datasheet (Rev. C) | PDF | HTML | 2020年 12月 8日 |
Functional safety information | LM7480-Q1 Functional Safety FIT Rate, Failure Mode Distribution, and Pin FMA | PDF | HTML | 2024年 2月 6日 | |
Application brief | Priority Power MUX using Ideal Diodes in Automotive Zonal Modules | PDF | HTML | 2023年 5月 23日 | |
Application note | Basics of Ideal Diodes (Rev. B) | PDF | HTML | 2021年 10月 5日 | |
EVM User's guide | LM74800 Evaluation Module: LM74800EVM-CD (Rev. A) | PDF | HTML | 2020年 10月 16日 | |
Analog Design Journal | Automotive EMC-compliant reverse-battery protection with ideal-diode controllers | 2020年 9月 22日 | ||
Application note | Ideal Diode Controllers for Active Rectification of AC Voltage Ripple | 2020年 6月 30日 | ||
Application brief | Single Point Failure Protection for Motor Drives and PLC Systems | 2020年 6月 30日 | ||
White paper | 簡化汽車及工業領域的功 能安全認證 | 2020年 6月 9日 | ||
Application note | Six System Architectures With Robust Reverse Battery Protection | 2020年 4月 30日 |
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's Evaluation Module LM74800EVM-CD helps designers evaluate the operation and performance of the LM7480-Q1 ideal diode controllers (LM74800QDRR and LM74801QDRR) in reverse battery protection applications. This evaluation module demonstrates how LM7480-Q1 controls two back-back N-channel power (...)
LM74800EVM-CS — LM7480-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。
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
TIDA-010242 — MIL-STD -1275E 突波防護參考設計
PMP23146 — 適用伺服器輔助電源且具 GaN 的 45-W 高功率密度主動箝位返馳參考設計
TIDA-010240 — 可擴充多組智慧型電池充電器參考設計
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
WSON (DRR) | 12 | Ultra Librarian |
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