itsmoked
Electrical
- Feb 18, 2005
- 19,114
Greetings. Here's a problem I've been working on for a few days. I have a nice little switcher that can convert anything between about 14V and 75V to 12VDC to run some lousy fans and a processor that has sub-regulation from the 12V. This means the 12V can be anywhere from say 11V to 14V and nothing would care in the least i.e. lousy regulation is fine.
The catch.. There's always a catch. I want this product to be able to run from 12V as well as 15,24,36,48V, etc.
Considered solutions. Run a buck/boost instead of a buck. Unfortunately that results in a switcher twice as big and 7 dollars instead of the above one which is only about 4 dollars.
Do you think something like the little network below the switcher with the two transistors will get the job done by essentially bypassing the switcher whenever the voltage is below 14V.
Keith Cress
kcress -
The catch.. There's always a catch. I want this product to be able to run from 12V as well as 15,24,36,48V, etc.
Considered solutions. Run a buck/boost instead of a buck. Unfortunately that results in a switcher twice as big and 7 dollars instead of the above one which is only about 4 dollars.
Do you think something like the little network below the switcher with the two transistors will get the job done by essentially bypassing the switcher whenever the voltage is below 14V.
Keith Cress
kcress -
