资料介绍
The TC4420/4429 are 6A high-speed MOSFET drivers available in
an 8-pin SOIC package, 8-pin CerDIP and PDIP packages, and a
5-pin TO-220 package. These parts have additional improvements
over the TC429 driver. Added features are 4kV of ESD protection,
latch-up protection of >1.5A of reverse output current, and logic
inputs that can withstand up to 5V negative swings. Although
designed as a power MOSFET driver, it can act as a level shifter,
comparator, waveshaper and pulse transformer driver, to mention
a few of its possible uses.
Some of the other notable parameters of the TC4420/4429 are its
excellent noise immunity due to a Schmitt trigger input and CMOS
construction, its minimal quiescent current draw (with its input in the
low state it consumes less than 150µA), and its rise and fall time are
matched and are typically 25nsec at 25°C into a 2,500pF load.
Due to their low current CMOS inputs, the TC4420/4429 do not
need speed up capacitors on their inputs. These inputs also have
the ability to accept any amplitude signal from negative 5V to the
supply voltage. AN798
TC4420/4429 Universal Power MOSFET Interface IC
Since a MOSFET actually appears as a variable capacitance as it
Author: Ron Vinsant,
turns on and off, it is hard to say exactly what the rise and fall times
Microchip Technology, Inc.
of the driver are going to be for any particular circuit. In order to
simplify the measuring method we choose a
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