High-Speed, Low-Side Gate Drivers Product Overview0 pages

HIGH-SPEED, LOW-SIDE DRIVERS
1 A to 9 A Drivers with Flexible Options to Fit Every Design Need
The FAN3100 and FAN3200 series of low-side driver families offer 70 different devices that provide choices
of 1 A, 2 A, 4 A or 9 A current ratings in single- or dual-channel versions in either commercial or automotive
AEC-Q100 qualified grades. The families offer an unequaled combination of fast switching, smaller size and
design flexibility options for driving power switches and relays.
These drivers offer multiple design advantages: high peak currents for efficient MOSFET and IGBT switching;
amplification of the built-in output current of analog and digital controllers; removal of power dissipation from
control ICs; ability to alleviate noise problems by placing near MOSFET(s) to minimize high-current loops and
to move noise source away from sensitive control chips; and the easy implementation of additional features such
as level shifting and timing delays.
Features

Automotive AEC-Q100 Qualified Devices

tOperation

Our best-in-class AEC-Q100 high-speed, low-side gate driver products
are complemented by a full range of AEC-Q101 rated power MOSFETs.
Fairchild has a focused automotive product line, with dedicated
resources, for customer quality support including global power labs
and regional applications support. Our automotive product development
and manufacturing sites are QS-9000 and ISO/TS-16949 certified.
Automotive products are manufactured and assembled in-house at
Fairchild operated facilities.

•t

Typical 4.5 V to 18 V operation

•t

Under-voltage lockout for predictable startup

t •t Short and well-controlled time delays (<20 ns)
tt for paralleling, delay-timing and MHz switching
t •t Fail-safe inputs to hold the output low if an input
tt signal is absent
t

•t –

40°C to +125°C operation

t •t Industry’s smallest packages (2 mm x 2 mm and
tt 3 mm x 3 mm MLP) as well as standard SOT-23
tt and SOIC-8

MillerDrive™ Output Architecture
VDD

tInput
•t TTL or CMOS (VDD ratio) thresholds for logic-level tt
tt compatibility and improved noise immunity
t
t

•t

Options for two inputs per channel for design flexibility

•t

Enable inputs which default to ON if not connected

Input
Stage

VOUT

t Output
•t Compound MillerDriveTM architecture for strong
tt gate drive during the Miller plateau region
t

•t Typically less than 15 ns rise and fall times
tt at specified loads
t

Applications
•t Switch-mode power supplies
•t DC--DC converters
•t Synchronous rectifier circuits
•t Motor control
•t Line drivers

MillerDriveTM is a combination of bipolar and MOSFET devices, that speed
up switching by providing high current during the Miller plateau region when
the gate-drain capacitance of the MOSFET is being charged or discharged.
The bipolar devices carry the bulk of the current during switching and the
MOSFET devices pull the output to the HIGH or LOW rail at the end of the
switching cycle. Use of bipolar devices allows the drivers to provide large
currents over a wide range of supply voltage and temperature variations.

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