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.
| Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | LM7480-Q1 Ideal Diode Controller with Load Dump Protection datasheet (Rev. C) | 08 Dec 2020 |
| Application note | Basics of Ideal Diodes (Rev. B) | 05 Oct 2021 | |
| User guide | LM74800 Evaluation Module: LM74800EVM-CD (Rev. A) | 16 Oct 2020 | |
| Analog design journal | Automotive EMC-compliant reverse-battery protection with ideal-diode controllers | 22 Sep 2020 | |
| Application note | Ideal Diode Controllers for Active Rectification of AC Voltage Ripple | 30 Jun 2020 | |
| Application note | Single Point Failure Protection for Motor Drives and PLC Systems | 30 Jun 2020 | |
| White paper | Streamlining Functional Safety Certification in Automotive and Industrial | 09 Jun 2020 | |
| White paper | 簡化汽車及工業領域的功 能安全認證 | 09 Jun 2020 | |
| White paper | 자동차 및 산업 분야의 기능적 안전성 인증 간소화 | 09 Jun 2020 | |
| Application note | Six System Architectures With Robust Reverse Battery Protection Using an Ideal D | 30 Apr 2020 |
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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 (...)
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 (...)
| Package | Pins | Download |
|---|---|---|
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