LM27222
www.ti.com SNVS306B – SEPTEMBER 2004 – REVISED MARCH 2013 LM27222 High-Speed 4.5A Synchronous MOSFET Driver
Check for Samples: LM27222 FEATURES DESCRIPTION The LM27222 is a dual N-channel MOSFET driver
designed to drive MOSFETs in push-pull
configurations as typically used in synchronous buck
regulators. The LM27222 takes the PWM output from
a controller and provides the proper timing and drive
levels to the power stage MOSFETs. Adaptive shootthrough protection prevents damaging and efficiency
reducing shoot-through currents, thus ensuring a
robust design capable of being used with nearly any
MOSFET. The adaptive shoot-through protection
circuitry also reduces the dead time down to as low
as 10ns, ensuring the highest operating efficiency.
The peak sourcing and sinking current for each driver
of the LM27222 is about 3A and 4.5Amps
respectively with a Vgs of 5V. System performance is
also enhanced by keeping propagation delays down
to 8ns. Efficiency is once again improved at all load
currents
by
supporting
synchronous,
nonsynchronous, and diode emulation modes through the …
