首頁 電源管理 電源開關 理想二極體/ORing 控制器
首頁
電源管理
電源開關
理想二極體/ORing 控制器

LM74721-Q1

現行

車用、無 TVS 低 IQ 反向電池保護理想二極體控制器、主動式整流

立即訂購
產品規格表

LM74721-Q1

現行
產品規格表 立即訂購

產品詳細資料

Vin (min) (V) 3 Vin (max) (V) 65 Number of channels 1 Features Automotive load dump compatibility, Enable, Integrated VDS clamp, 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, Integrated VDS clamp, 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 –33 V
  • Integrated VDS clamp for Input TVS less operation for ISO7637 pulse suppression
  • Low quiescent current 35 µA (max) in operation
  • Low 3.3-µA (max) shutdown current (EN = Low)
  • Ideal diode operation with 17-mV A to C forward voltage drop regulation
  • Drives external back-to-back N-Channel MOSFETs
  • Integrated 30-mA boost regulator
  • Fast response to reverse current blocking: 0.5 µs
  • Active rectification up to 100 kHz
  • Adjustable overvoltage protection
  • Available in space saving 12-pin WSON package
  • Pin-to-pin compatible with LM74720-Q1
  • 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 –33 V
  • Integrated VDS clamp for Input TVS less operation for ISO7637 pulse suppression
  • Low quiescent current 35 µA (max) in operation
  • Low 3.3-µA (max) shutdown current (EN = Low)
  • Ideal diode operation with 17-mV A to C forward voltage drop regulation
  • Drives external back-to-back N-Channel MOSFETs
  • Integrated 30-mA boost regulator
  • Fast response to reverse current blocking: 0.5 µs
  • Active rectification up to 100 kHz
  • Adjustable overvoltage protection
  • Available in space saving 12-pin WSON package
  • Pin-to-pin compatible with LM74720-Q1

The LM74721-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 automotive battery powered ECUs. The device can withstand and protect the loads from negative supply voltages down to –33-V DC. An integrated ideal diode controller (GATE) drives the first MOSFET to replace a Schottky diode for reverse input protection and output voltage holdup. Integrated VDS clamp feature enables input TVS less system designs for automotive ISO7637 pulse suppression. 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 100-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 protection feature for load dump protection.

The LM74721-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 automotive battery powered ECUs. The device can withstand and protect the loads from negative supply voltages down to –33-V DC. An integrated ideal diode controller (GATE) drives the first MOSFET to replace a Schottky diode for reverse input protection and output voltage holdup. Integrated VDS clamp feature enables input TVS less system designs for automotive ISO7637 pulse suppression. 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 100-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 protection feature for load dump protection.
filter 尋找其它 理想二極體/ORing 控制器
下載 觀看有字幕稿的影片 影片

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 7
類型 標題 日期
* Data sheet LM74721-Q1 TVS Less Low IQ Automotive Reverse Battery Protection Ideal Diode Controller with Active Rectification datasheet (Rev. B) PDF | HTML 2022年 7月 7日
Certificate LM74721EVM EU RoHS Declaration of Conformity (DoC) 2022年 5月 27日
Technical article 3 ways to design a low quiescent-current (Iq) automotive reverse battery protectio PDF | HTML 2021年 11月 18日
Analog Design Journal Going TVS-less in Automotive Reverse Battery Protection Designs 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
Analog Design Journal Automotive EMC-compliant reverse-battery protection with ideal-diode controllers 2020年 9月 22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

LM74721EVM — 適用於理想二極體控制器的 LM74721-Q1 評估模組

在反向電池保護應用中，LM74721EVM 評估模組可協助設計人員評估 LM74721-Q1 理想二極體控制器的運作及性能。此評估模組展示 LM74721-Q1 如何搭配用於 IQ 和快速瞬態回應的整合式升壓穩壓器，以及搭配用於無 TVS 運作的整合式輸入 VDS 箝位，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
TI.com 無法提供
模擬型號

LM7472x-Q1 PSpice Transient Model

SLVMDO2.ZIP (84 KB) - PSpice Model
下載
計算工具

FET-INRUSH-SOA-CALC — FET SOA margin calculator for dvdt based startup

The design calculator allows user to estimate the FET SOA margin while starting up with dVdt based startup for inrush current control
支援產品和硬體

支援產品和硬體

產品
理想二極體/ORing 控制器
LM74502 — 具有負載斷開和 OVP 的 3.2-V 至 65-V 工業 RPP 控制器 LM74502-Q1 — 汽車反向極性保護控制器、過電壓保護、閘極驅動強度 60 μA LM74502H — 具有負載斷開、OVP 及高閘極驅動器的 3.2-V 至 65-V 工業 RPP 控制器 LM74502H-Q1 — 汽車反向極性保護控制器、過電壓保護、閘極驅動強度 11 mA LM74720-Q1 — 具有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 LM74721-Q1 — 車用、無 TVS 低 IQ 反向電池保護理想二極體控制器、主動式整流 LM74722-Q1 — 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 LM7480 — 3-V 至 65-V 背對背 NFET 理想二極體控制器、-55°C 至 125°C LM7480-Q1 — 用於驅動背對背 NFET 的 3V 至 65V、車用理想二極體控制器 LM7481 — 具有高閘極驅動器的 3-V 至 65-V 背對背 NFET 理想二極體控制器、-55°C 至 125°C LM7481-Q1 — 具有主動式整流驅動 B2B NFET 的車用理想二極體控制器
高壓側開關控制器
TPS1200-Q1 — 具有保護與診斷功能的車用 45V 低 IQ 高壓側驅動器 TPS1210-Q1 — Automotive, 45V low-Iq dual high-side driver with short circuit protection and diagnostics TPS1211-Q1 — Automotive, 3.5V to 45V high-side driver with protection and diagnostics TPS1213-Q1 — 具低功率模式和可調整短路保護的車用、45V 低 Iq 高壓側驅動器 TPS1214-Q1 — 具有低 Iq、低功率、負載喚醒、I²t 與診斷功能的車用、高壓側開關控制器 TPS4800-Q1 — 具有保護與診斷功能的車用 100V 低 IQ 高壓側驅動器 TPS4810-Q1 — 具有短路防護與診斷功能的車用 100V 低 IQ 雙高壓側驅動器 TPS4811-Q1 — Automotive, 3.5V to 100V high-side driver with protection and diagnostics TPS4813-Q1 — 具低功耗模式和可調整短路防護的車用 100V 低 IQ 高壓側驅動器
下載
模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

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 (...)
要求
封裝 針腳 CAD 符號、佔位空間與 3D 模型
WSON (DRR) 12 Ultra Librarian
適用 TI 的評估品項標準條款與條件。

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。

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片