Hi i need your idea to desing a simple dc dc converter non-isolated. my input will be around 15V- 24V and the output must vary at least from 6 to 12 volt at 1.5A.
to make it simple i would need an ic to replace an old linear lm317 with 1.5A output
I found out lm2576 chip that would work but efficiency is very poor for a switcher (77%!!) .
i found also a5972d ic but it is not available!
i also think of usint ptn78000h dc converter but they are expensive (i will have to make few hundreds of those so pricing is important.
i also found a lot of others but some of them are very complicated with a lot of external parts. i want an integrated switch and the lowest possible parts count (some resistors, inductor and capacitor)
Thanx
to make it simple i would need an ic to replace an old linear lm317 with 1.5A output
I found out lm2576 chip that would work but efficiency is very poor for a switcher (77%!!) .
i found also a5972d ic but it is not available!
i also think of usint ptn78000h dc converter but they are expensive (i will have to make few hundreds of those so pricing is important.
i also found a lot of others but some of them are very complicated with a lot of external parts. i want an integrated switch and the lowest possible parts count (some resistors, inductor and capacitor)
Thanx