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LM74680

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100V Ideal diode bridge controller for low loss rectification

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Data sheet

LM74680

ACTIVE
Data sheet Order now

Product details

Vin (min) (V) 4 Vin (max) (V) 80 Number of channels 1 Features Enable, Full bridge, Full bridge diode rectifier controller, Linear control, Reverse current blocking, Reverse polarity protection Iq (typ) (mA) 0.27 Iq (max) (mA) 0.35 FET External single FET 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 Rating Catalog VGS (max) (V) 14 Shutdown current (ISD) (mA) (A) 0.0000382 Device type Ideal diode bridge controller Product type Ideal diode controller
Vin (min) (V) 4 Vin (max) (V) 80 Number of channels 1 Features Enable, Full bridge, Full bridge diode rectifier controller, Linear control, Reverse current blocking, Reverse polarity protection Iq (typ) (mA) 0.27 Iq (max) (mA) 0.35 FET External single FET 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 Rating Catalog VGS (max) (V) 14 Shutdown current (ISD) (mA) (A) 0.0000382 Device type Ideal diode bridge controller 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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* Data sheet LM74680 Ideal Diode Bridge Controller for Low Loss Rectification datasheet PDF | HTML 10 Dec 2024
EVM User's guide LM74680 Evaluation Module for Ideal Diode Bridge Controller PDF | HTML 04 Dec 2024
Certificate LM74680EVM EU Declaration of Conformity (DoC) 31 Oct 2024

Design & development

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Evaluation board

LM74680EVM — LM74680 evaluation module

The LM74680 evaluation module (EVM) helps designers evaluate the operation and performance of the LM74680 ideal diode bridge controller (12-pin DRR package). This EVM demonstrates how an N-channel power MOSFET driven by LM74680 can emulate a very low forward voltage diode and increase the (...)
User guide: PDF | HTML
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Simulation model

LM74680 PSpice Transient Model

SLUM918.ZIP (510 KB) - PSpice Model
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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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