I have an led lighting system at home, powered by 12v batteries floated off the mains, and controlled ultimately by an 18M2 (we get a lot of power cuts). The picaxe outputs drive two 4427 2-channel mosfet drivers, which then drive the four mosfets. So far so good, nothing difficult about the circuit or the software.
But in the last four years I have now had two 4427 failures, suggesting that mosfet drivers are vulnerable to something. The datasheets don't suggest any particular design requirements. Does anyone with experience of such beasties have any words of wisdom regarding circuit design, to protect the drivers? Or have I just been unlucky?
I'm about to redevelop it for an X2 as I want to add some features that need the timing capabilities of an X2, so now is a good time to get this right.
But in the last four years I have now had two 4427 failures, suggesting that mosfet drivers are vulnerable to something. The datasheets don't suggest any particular design requirements. Does anyone with experience of such beasties have any words of wisdom regarding circuit design, to protect the drivers? Or have I just been unlucky?
I'm about to redevelop it for an X2 as I want to add some features that need the timing capabilities of an X2, so now is a good time to get this right.