| ??? 02/22/03 21:23 Read: times |
#39791 - RE: Linear Power and Temperature Responding to: ???'s previous message |
My goal is to figure out how much copper area the power supply needs to run cool to human touch approx. 30c. Assuming from below (circuit consumption, not supply current) (15-5V) * 0.5 = 5 Watts. To keep below 30C at 22C ambient with that dissapation, you will need a football field of copper.
My Supply current is 2-3A ... My cirucit consume 500mA something does'nt jive here Any Help? Or can you suggest a cheap power supply that can handle the same Voltages and Currents Ranges. With that input range, the solution is a small switcher, TI have some small ready made switchers in the $10 range, I use the PT6302 18-30V in, 5V out at 3A which cost abt $10. Erik |
| Topic | Author | Date |
| Linear Power and Temperature | 01/01/70 00:00 | |
| RE: Linear Power and Temperature | 01/01/70 00:00 | |
| Re: Steve | 01/01/70 00:00 | |
| Re: Steve | 01/01/70 00:00 | |
| Re: Steve | 01/01/70 00:00 | |
| Re: Steve | 01/01/70 00:00 | |
| Re: Steve | 01/01/70 00:00 | |
| Re: Steve | 01/01/70 00:00 | |
| Re: Steve | 01/01/70 00:00 | |
| Ending | 01/01/70 00:00 | |
| RE: Ending | 01/01/70 00:00 | |
| RE: Linear Power and Temperature | 01/01/70 00:00 | |
| RE: Linear Power and Temperature | 01/01/70 00:00 | |
| RE: Linear Power and Temperature | 01/01/70 00:00 | |
| RE: Linear Power and Temperature | 01/01/70 00:00 | |
RE: Linear Power and Temperature | 01/01/70 00:00 | |
| Dropout Voltage Mean | 01/01/70 00:00 | |
| RE: Dropout Voltage Mean | 01/01/70 00:00 | |
| Input Range | 01/01/70 00:00 |