High frequency DCDC Layout Precautions
At present, many DCDC are the high frequency development, but also a lot of synchronous step-up approach.
There are several advantages of high frequency synchronization.
- efficient
- Small inductance
- Space-saving, Schottky diodes do not, do not switch off completely.
But DCDC high frequency of Layout demanding.
The following is a typical wiring reference.
Vout is connected to one out of Low ESR MLCC, FB feedback capacitance later.
Note here that a lot of people not to be misled schematics, FB feedback must be after the MLCC, but not before.
