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LM74722-Q1

現行

具有 200-khz 主動式整流與負載突降保護的車用、低 IQ 理想二極體控制器

產品詳細資料

Vin (min) (V) 3 Vin (max) (V) 65 Number of channels 1 Features Automotive load dump compatibility, Enable, Linear control, Reverse current blocking, Reverse polarity protection Iq (typ) (mA) 0.032 Iq (max) (mA) 0.038 TI functional safety category Functional Safety-Capable FET External back-to-back FET, External single FET IGate sink (typ) (mA) 2.1 IGate pulsed (typ) (A) 2.1 Operating temperature range (°C) -40 to 125 VSense reverse (typ) (mV) -6.5 Design support EVM Rating Automotive VGS (max) (V) 13 Shutdown current (ISD) (mA) (A) 0.0035 Device type Ideal diode controller Product type Ideal diode controller
Vin (min) (V) 3 Vin (max) (V) 65 Number of channels 1 Features Automotive load dump compatibility, Enable, Linear control, Reverse current blocking, Reverse polarity protection Iq (typ) (mA) 0.032 Iq (max) (mA) 0.038 TI functional safety category Functional Safety-Capable FET External back-to-back FET, External single FET IGate sink (typ) (mA) 2.1 IGate pulsed (typ) (A) 2.1 Operating temperature range (°C) -40 to 125 VSense reverse (typ) (mV) -6.5 Design support EVM Rating Automotive VGS (max) (V) 13 Shutdown current (ISD) (mA) (A) 0.0035 Device type Ideal diode controller Product type Ideal diode controller
WSON (DRR) 12 9 mm² 3 x 3
  • AEC-Q100 qualified with the following results
    • 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
  • Low quiescent current 35 µA (max) in operation
  • Low 3.3-µA (max) shutdown current (EN = Low)
  • Ideal diode operation with 13-mV A to C forward voltage drop regulation
  • Drives external back-to-back N-Channel MOSFETs
  • Integrated 30-mA boost regulator
  • Active rectification up to 200 kHz
  • Fast response to reverse current blocking: 0.5 µs
  • Fast forward GATE turn ON delay: 0.72 µs
  • Adjustable overvoltage protection
  • Meets automotive ISO7637 transient requirements with a suitable TVS diode
  • Available in space saving 12-pin WSON package
  • AEC-Q100 qualified with the following results
    • 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
  • Low quiescent current 35 µA (max) in operation
  • Low 3.3-µA (max) shutdown current (EN = Low)
  • Ideal diode operation with 13-mV A to C forward voltage drop regulation
  • Drives external back-to-back N-Channel MOSFETs
  • Integrated 30-mA boost regulator
  • Active rectification up to 200 kHz
  • Fast response to reverse current blocking: 0.5 µs
  • Fast forward GATE turn ON delay: 0.72 µs
  • Adjustable overvoltage protection
  • Meets automotive ISO7637 transient requirements with a suitable TVS diode
  • Available in space saving 12-pin WSON package

The LM74722-Q1 ideal diode controller drives and controls external back-to-back N-Channel MOSFETs to emulate an ideal diode rectifier with power path ON and 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 (GATE) drives the first MOSFET to replace a Schottky diode for reverse input protection and output voltage holdup. A strong boost regulator with fast turn-ON and OFF comparators ensures robust and efficient MOSFET switching performance during automotive testing, such as ISO16750 or LV124, where an ECU is subjected to input short interruptions and AC superimpose input signals up to 200-kHz frequency. Low quiescent current 35 µA (maximum) in operation enables always ON system designs. With a second MOSFET in the power path, the device allows load disconnect control using EN pin. Quiescent current reduces to 3.3 µA (maximum) with EN low. The device features an adjustable overvoltage cutoff or overvoltage clamp protection using OV pin.

The LM74722-Q1 ideal diode controller drives and controls external back-to-back N-Channel MOSFETs to emulate an ideal diode rectifier with power path ON and 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 (GATE) drives the first MOSFET to replace a Schottky diode for reverse input protection and output voltage holdup. A strong boost regulator with fast turn-ON and OFF comparators ensures robust and efficient MOSFET switching performance during automotive testing, such as ISO16750 or LV124, where an ECU is subjected to input short interruptions and AC superimpose input signals up to 200-kHz frequency. Low quiescent current 35 µA (maximum) in operation enables always ON system designs. With a second MOSFET in the power path, the device allows load disconnect control using EN pin. Quiescent current reduces to 3.3 µA (maximum) with EN low. The device features an adjustable overvoltage cutoff or overvoltage clamp protection using OV pin.

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類型 標題 日期
* Data sheet LM74722-Q1 Automotive Low IQ Ideal Diode Controller with 200-kHz Active Rectification and Load Dump Protection datasheet (Rev. B) PDF | HTML 2022年 8月 4日
Technical article 3 ways to design a low quiescent-current (Iq) automotive reverse battery protectio PDF | HTML 2021年 11月 18日
Application note Basics of Ideal Diodes (Rev. B) PDF | HTML 2021年 10月 5日
Application brief Active Rectification and its Advantages in Automotive ECU Designs PDF | HTML 2021年 9月 29日
User guide LM7472EVM: Evaluation Module for LM74720-Q1 & LM74722-Q1 Ideal Diode Controllers PDF | HTML 2021年 9月 15日
Analog Design Journal Automotive EMC-compliant reverse-battery protection with ideal-diode controllers 2020年 9月 22日

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LM7472EVM — 適用於理想二極體控制器的 LM74720-Q1 與 LM74722-Q1 評估模組

TI 的評估模組 LM7472EVM 可協助設計人員評估 LM74720-Q1和 LM74722-Q1 理想二極體控制器在反向電池保護應用中的運作及性能。此評估模組展示 LM7472x-Q1 如何搭配用於低 IQ 和快速瞬態回應的整合式升壓穩壓器,控制兩個背對背 N 通道功率 MOSFET,其先連接理想二極體 MOSFET,緊接著再連接用於切換輸出及電源路徑切斷的第二個 MOSFET。

使用指南: PDF | HTML
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LM7472x-Q1 PSpice Transient Model

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PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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