mosfet driver question

[mrdarrett@gmail.com]

I'm thinking of getting a TC1427 mosfet driver to power a motor by
parallel port. I'm about to place the order, then I thought of a few
questions:

Can I drive a 1A load directly from Pin 7 of the TC1427? Or is this a
bad idea?

For greater loads, the gate of a mosfet (say, IRF530) gets connected to
Pin 7, right?

Thanks,

Michael

 

[Arlet]

I'm thinking of getting a TC1427 mosfet driver to power a motor by
parallel port. I'm about to place the order, then I thought of a few
questions:

Can I drive a 1A load directly from Pin 7 of the TC1427? Or is this a
bad idea?

In general, that's a bad idea. The mosfet driver is optimized for
providing a high peak current into a small capacitive load, such as the
gate of the mosfet. This high current is only sustained for a few ns,
until the gate charge has been moved.

Devices like these are not designed to provide sustained high currents.

 

[mrdarrett@gmail.com]

In general, that's a bad idea. The mosfet driver is optimized for
providing a high peak current into a small capacitive load, such as the
gate of the mosfet. This high current is only sustained for a few ns,
until the gate charge has been moved.

Devices like these are not designed to provide sustained high currents.

Ok, thanks!

Michael

 

[Robert Wilson]

Ok, thanks!

Michael

Although there is nothing wrong with using the chip to drive a MOSFET to
give you your sustained high current.

Rob.