| ??? 06/12/07 19:30 Read: times |
#140622 - Component selection Responding to: ???'s previous message |
I've found myself in positions like this during the initial design phase of products. Having to regulate and route so many different power supplies around a board can be a real pain and is likely to be really quite costly. You also have logic level translation to worry about as well as sequencing.
I would strongly suggest going through the exercise of reducing the number of different power rails you need. Ask yourself questions like: - Can you run all your logic from a 3.3V rail using one of Atmel's 3.3V capable 8052 variants? - If you need to drive 24V contactors, why can't all your relays use a 24V drive voltage? Matt. |
| Topic | Author | Date |
| powersupplies | 01/01/70 00:00 | |
| Sequencing | 01/01/70 00:00 | |
| Yes and no | 01/01/70 00:00 | |
| I would try to omit the power sequencing | 01/01/70 00:00 | |
| Component selection | 01/01/70 00:00 | |
| why even Atmel | 01/01/70 00:00 | |
| ^ What he said | 01/01/70 00:00 | |
| omit the power sequencing | 01/01/70 00:00 | |
| look at a Maxim appnote | 01/01/70 00:00 | |
| power sequencing | 01/01/70 00:00 | |
power supply sequencing - an example | 01/01/70 00:00 |