FAN53418MX Fairchild Semiconductor, FAN53418MX Datasheet

MOSFET & Power Driver ICs DC-DC MOSFET Driver Synchronous

FAN53418MX

Manufacturer Part Number

FAN53418MX

Description

MOSFET & Power Driver ICs DC-DC MOSFET Driver Synchronous

Manufacturer

Fairchild Semiconductor

Type

Synchronous DC-DC MOSFET Driverr

Datasheet

1.FAN53418MX.pdf (11 pages)

Specifications of FAN53418MX

Rise Time

45 ns

Fall Time

30 ns

Supply Voltage (min)

10.8 V

Supply Current

6 mA

Maximum Power Dissipation

1052 mW

Maximum Operating Temperature

+ 85 C

Mounting Style

SMD/SMT

Package / Case

SOIC-8

Minimum Operating Temperature

- 65 C

Number Of Drivers

Number Of Outputs

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

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Basic Application

Features

• Drives N-channel High-Side and Low-Side MOSFETs in

• Internal Adaptive “Shoot-Through” Protection

• High Switching Frequency (> 500kHz)

• 12V High-Side and 12V Low-Side Drive

• OD input for Output Disable – allows for synchronization

• SOIC-8 Package

Applications

• Multi-phase VRM/VRD regulators for Microprocessor

• High Current/High Frequency DC/DC Converters

• High Power Modular Power Supplies

FAN53418

Synchronous DC-DC MOSFET Driver

a synchronous buck conﬁguration

– 30ns Output Rise/Fall Times w/3000pF load

– 20ns Propagation Delay

with PWM controller

Power

C VCC

BST

VCC

Figure 1. Basic Application Circuit

FAN54318

PGND

DRVH

DRVL

General Description

The FAN53418 is a high frequency, dual MOSFET driver

speciﬁcally designed to drive two power N-Channel

MOSFETs in a synchronous rectiﬁed buck converter.

These drivers combined with a FAN53168 Multi-Phase Buck

PWM controller and power MOSFETs form a complete core

voltage regulator solution for advanced microprocessors.

The FAN53418 drives both the upper and lower gates in a

synchronous rectiﬁer to +12V. The upper gate drive imple-

ments bootstrapping with only an external capacitor and

diode required. This reduces implementation complexity

and allows the use of higher performance, cost effective,

N-Channel MOSFETs.

The output drivers in the FAN53418 have the capacity to

efﬁciently switch power MOSFETs at frequencies over

500kHz. Each driver is capable of driving a 3000pF load

with a ~20ns propagation delay and ~30ns transition time.

Adaptive shoot-through protection is integrated to prevent

both MOSFETs from conducting simultaneously. Addition-

ally an Output Disable function is included to synchronize

the driver with the PWM controller. The FAN53418 is

rated for operation from 0°C to +85°C and is available in a

low-cost SOIC-8 package.

C BST

+12V

www.fairchildsemi.com

C VIN

REV. 1.0.0 6/11/03

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