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FAN3223TMX_12: DescriptionDual 4A High-Speed, Low-Side Gate Drivers; File Size2MB，24 Pages; ManufacturerFairchild; Websitehttp://www.fairchildsemi.com/

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Dual 4A High-Speed, Low-Side Gate Drivers

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FAN3223 / FAN3224 / FAN3225_F085 — Dual 4A High-Speed, Low-Side Gate Drivers

August 2012

FAN3223 / FAN3224 / FAN3225_F085

Dual 4A High-Speed, Low-Side Gate Drivers

Features

Qualified to AEC Q-100

4.5 to 18V Operating Range

5A Peak Sink/Source at V

= 12V

4.3A Sink / 2.8A Source at V

OUT

= 6V

Choice of TTL or CMOS Input Thresholds

Three Versions of Dual Independent Drivers:

Description

The FAN3223-25 family of dual 4A gate drivers is

designed to drive N-channel enhancement-mode

MOSFETs in low-side switching applications by

providing high peak current pulses during the short

switching intervals. The driver is available with either

TTL or CMOS input thresholds. Internal circuitry

provides an under-voltage lockout function by holding

the output LOW until the supply voltage is within the

operating range. In addition, the drivers feature matched

internal propagation delays between A and B channels

for applications requiring dual gate drives with critical

timing, such as synchronous rectifiers. This also

enables connecting two drivers in parallel to effectively

double the current capability driving a single MOSFET.

The FAN322X drivers incorporate MillerDrive™

architecture for the final output stage. This bipolar-

MOSFET combination provides high current during the

Miller plateau stage of the MOSFET turn-on / turn-off

process to minimize switching loss, while providing rail-

to-rail voltage swing and reverse current capability.

The FAN3223 offers two inverting drivers and the

FAN3224 offers two non-inverting drivers. Each device

has dual independent enable pins that default to ON if

not connected. In the FAN3225, each channel has dual

inputs of opposite polarity, which allows configuration as

non-inverting or inverting with an optional enable

function using the second input. If one or both inputs are

left unconnected, internal resistors bias the inputs such

that the output is pulled LOW to hold the power

MOSFET OFF.

Dual Inverting + Enable (FAN3223)

Dual Non-Inverting + Enable (FAN3224)

Dual-Inputs (FAN3225)

Internal Resistors Turn Driver Off If No Inputs

MillerDrive™ Technology

12ns / 9ns Typical Rise/Fall Times with 2.2nF Load

Typical Propagation Delay Under 20ns Matched

within 1ns to the Other Channel

Double Current Capability by Paralleling Channels

8-Lead SOIC Package

Rated from –40°C to +125°C Ambient

Applications

Switch-Mode Power Supplies

High-Efficiency MOSFET Switching

Synchronous Rectifier Circuits

DC-to-DC Converters

Motor Control

Related Resources

AN-6069: Application Review and

Evaluation of Low-Side Gate Drivers

Comparative

FAN3223

FAN3224

FAN3225

Figure 1. Pin Configurations

FAN3223 / FAN3224 / FAN3225_F085 • Rev. 1.0.0

www.fairchildsemi.com

FAN3223TMX_12 Related Products

	FAN3223TMX_12	FAN3223CMX_12	FAN3224CMX_12	FAN3224TMX_12	FAN3225CMX_12	FAN3225TMX_12
Description	Dual 4A High-Speed, Low-Side Gate Drivers	Dual 4A High-Speed, Low-Side Gate Drivers	Dual 4A High-Speed, Low-Side Gate Drivers	Dual 4A High-Speed, Low-Side Gate Drivers	Dual 4A High-Speed, Low-Side Gate Drivers	Dual 4A High-Speed, Low-Side Gate Drivers

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