电源设计时应注意那几个方面？

hljml_2000

电源设计时应注意那几个方面？

jeffsteven

On PCB Layout

1. Check Power trace width if suitable  actual current limited
    typically  40mil trace width: 1A current
2. Check power trace if near the high freq. clock trace . Far away clock could be fine.
3. Min.  Power trace loop
4. Different power plane don't overlap , it could cause noise couple.   

On Circuit

1. Max. input voltage and workable input voltagerange ,
    if need over-voltage protection circuit??
2. Max. load current ??
3. effeciency and design the power type :
       DC/DC ( Boost ,Buck , Fly-back ,...etc )
       LDO                                                     
4. component package
5. cost / size