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電源保護開關與控制器
理想二極體與 ORing 控制器

LM74680

現行

適用於低損耗整流的 100V 理想二極體橋接控制器

立即訂購
產品規格表

LM74680

現行
產品規格表 立即訂購

產品詳細資料

Vin (max) (V) 80 Vin (min) (V) 5 FET External single FET Device type Ideal diode bridge controller Number of channels 4 Rating Catalog Features Enable, Full bridge diode rectifier controller, Linear control, Reverse current blocking, Reverse polarity protection Iq (typ) (mA) 0.27 Iq (max) (mA) 0.45 IGate source (typ) (µA) 160 IGate sink (typ) (mA) 100 Operating temperature range (°C) -40 to 125 VSense reverse (typ) (mV) -1 Design support EVM VGS (max) (V) 14 Shutdown current (ISD) (mA) (A) 0.0000382 Product type Ideal diode controller
Vin (max) (V) 80 Vin (min) (V) 5 FET External single FET Device type Ideal diode bridge controller Number of channels 4 Rating Catalog Features Enable, Full bridge diode rectifier controller, Linear control, Reverse current blocking, Reverse polarity protection Iq (typ) (mA) 0.27 Iq (max) (mA) 0.45 IGate source (typ) (µA) 160 IGate sink (typ) (mA) 100 Operating temperature range (°C) -40 to 125 VSense reverse (typ) (mV) -1 Design support EVM VGS (max) (V) 14 Shutdown current (ISD) (mA) (A) 0.0000382 Product type Ideal diode controller
WSON (DRR) 12 9 mm² 3 x 3
  • Input operating voltage range: 5V to 80V
    • 100V absolute maximum
  • 4× integrated gate drive control
  • 165µA gate pull-up strength
  • 100mA gate pull-down strength
  • Linear gate regulation control for supply ORing applications
    • VTG_REG = 11mV
  • Enable pin for user-controlled device on/off function
  • –40°C to 125°C operating junction temperature range

  • Small footprint: 3mm × 3mm VQFN-12

    • Meets IPC-9592 spacing rules
  • Input operating voltage range: 5V to 80V
    • 100V absolute maximum
  • 4× integrated gate drive control
  • 165µA gate pull-up strength
  • 100mA gate pull-down strength
  • Linear gate regulation control for supply ORing applications
    • VTG_REG = 11mV
  • Enable pin for user-controlled device on/off function
  • –40°C to 125°C operating junction temperature range

  • Small footprint: 3mm × 3mm VQFN-12

    • Meets IPC-9592 spacing rules

The LM74680 is an ideal diode bridge controller that provides voltage rectification by driving four N-channel MOSFETs in a full-bridge configuration. LM74680 enables lower voltage drop and reduced power dissipation as compared to conventional diode bridge rectifiers. This helps to simplify the power supply design, eliminate heat sinks, and reduce PCB area. The integrated charge pump allows use of N-channel MOSFETs, which are smaller and more cost-effective than P-channel MOSFETs for the same power level. It also offers fast response to reverse current conditions for protection against input short events. The LM74680 has an enable pin which allows for the gate driver to be either enabled or disabled by an external signal. The LM74680 supports voltage rectification from DC to 1kHz.

This device is characterized for operation over a junction temperature range of –40°C to +125°C.

The LM74680 is an ideal diode bridge controller that provides voltage rectification by driving four N-channel MOSFETs in a full-bridge configuration. LM74680 enables lower voltage drop and reduced power dissipation as compared to conventional diode bridge rectifiers. This helps to simplify the power supply design, eliminate heat sinks, and reduce PCB area. The integrated charge pump allows use of N-channel MOSFETs, which are smaller and more cost-effective than P-channel MOSFETs for the same power level. It also offers fast response to reverse current conditions for protection against input short events. The LM74680 has an enable pin which allows for the gate driver to be either enabled or disabled by an external signal. The LM74680 supports voltage rectification from DC to 1kHz.

This device is characterized for operation over a junction temperature range of –40°C to +125°C.
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類型 標題 日期
* Data sheet LM74680 Ideal Diode Bridge Controller for Low Loss Rectification datasheet PDF | HTML 2024年 12月 10日
Application brief Achieve Low Loss Rectification Using TI's Diode Bridge Controllers PDF | HTML 2025年 4月 9日
Certificate LM74680EVM EU Declaration of Conformity (DoC) 2024年 10月 31日

設計與開發

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開發板

LM74680EVM — LM74680 評估模組

LM74680 評估模組 (EVM) 可協助設計人員評估 LM74680 理想二極體橋接控制器 (12 針腳 DRR 封裝) 的運作和性能。此 EVM 示範由 LM74680 驅動的 N 通道功率 MOSFET 如何模擬極低順向電壓二極體，並以顯著因數提升橋式整流器的效率。
使用指南: PDF | HTML
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模擬型號

LM74680 PSpice Transient Model

SLUM918.ZIP (510 KB) - PSpice Model
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