First of all thanks for reading this post. I am designing an isolated board for several peripherals for which I need your help/suggestions. The board contains a buck converter (like LM2596) to step the input voltage from (9-36V) to 5 V. Then there is an isolation converter ( Vin=5V, Vo=5V isolated). My first questions is regarding this isolation converter. The only component I could find online is 0505 series (0505 converter) which is limited to 1 W only. I need at least 1.2 Amps of current supply. The peripherals include one isolated RS485 transceiver, one CAN bus transceiver and two or three ADC connected via I2C bus with a digital isolator between ADC and microcontroller. Following are my questions regarding this board and I would really appreciate your help.
Is there any similar model like 0505 converter(isolated) with higher power handling capacity?
Is the board design ok? with respect to isolation!
The microcontroller runs on 3.3 V so I would need to use a 5 to 3.3 V linear regulator, would that effect the performance too much? is so should i go for 5 to 3.3 V isolated converter?
Any other suggestions regarding this design?
Here is the picture of this board.