i think about using something like
input of 24V plugged into DC-DC to converter that convert the voltage into 12V
and then from the 12V to use LDO to get 10V
in this way i have 3 different voltage types (24,12,10)
is this the right way or there is some IC that makes all of this?
If you requires these voltages then that is a reasonable way of doing it.
A full description of your project including likely current at each voltage would make it easier to give a full answer.
Weedpharma
That is the right way. Or use two DC-DC converters that both have input at 24V. But then you would have more ripple at 10V, therefor an LDO for 10V after the DC-DC converter is the best option. But only if you don't need high currents at 10V.
Why do you need 10V ?
weedpharma:
If you requires these voltages then that is a reasonable way of doing it.A full description of your project including likely current at each voltage would make it easier to give a full answer.
Weedpharma
right now it's hard to say,
why? what about the current? how can it change something?
When you need 10V, 2A, a LDO would waste 4W into heat. A good DC-DC converter will be better.
When you need 10V, 100mA, then a LDO is the right choice.
When I look at my project on my table then I see one DC-DC converter, and at least 5 LDO voltage regulators (2 on the Mega board, one on the Ethernet Shield, one on a I2C level shifter, one for my 3.3V I2C Slaves, and even a voltage pump on one Slave board). And that project doesn't even use 12V solenoids or motors.