| ??? 02/25/05 13:34 Read: times |
#88452 - depends Responding to: ???'s previous message |
However this makes the L298 get quite hot. Is this a valid way
It is, if the max junction temp is not exceeded, so calculate. If you exceed any max for the chip, it may not fail, just the life will be shortened. I have seen a year old product where a certain chip had to be replaced in a high percentage of sold units. It was blamed on "a bad batch of chips" but when you can fry an egg on a chip it is too hot to live long regardless of which batch it is from. THUS, any practice that makes a chip too hot to touch should be avoided, except for TOTALLY and ABSOLUTELY calculated cases where the worst ambient and the worst load is proven not to result in TjMax being exceeded. When calculating such and going to the limit, many have been burned (pun intended) by not figuing dust accumulation in the calculation. Erik |
| Topic | Author | Date |
| Input to L297 with a micro pin | 01/01/70 00:00 | |
| belt and braces | 01/01/70 00:00 | |
| re | 01/01/70 00:00 | |
| design vs test | 01/01/70 00:00 | |
| continuing >>> | 01/01/70 00:00 | |
| not at all | 01/01/70 00:00 | |
| continuing | 01/01/70 00:00 | |
| burn one - burn two | 01/01/70 00:00 | |
| L297 | 01/01/70 00:00 | |
| L297 | 01/01/70 00:00 | |
| depends | 01/01/70 00:00 | |
Enable high | 01/01/70 00:00 |