What is external synchronization frequency?

AI Thread Summary
External synchronization frequency refers to the ability to align a DC-DC converter's switching frequency with an external clock, typically within the range of 350-450 kHz. This synchronization helps minimize noise interference with nearby equipment. If no external clock is provided, the converter will operate at a free-running frequency within that range. Understanding this concept is crucial for optimizing performance in electronic systems. The discussion highlights the importance of synchronization in reducing potential interference.
Adrian1
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What does it mean?

"External synchronization frequency:
350-450kHz"

http://ohmps.com/product/4/
 
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Adrian1 said:
What does it mean?

"External synchronization frequency:
350-450kHz"

http://ohmps.com/product/4/

Welcome to the PF.

It probably means that you can synchronize the DC-DC converter's switching frequency to an external clock in that frequency range. That is often done to avoid noise interference with other equipment nearby. If you don't supply a synchronizing clock, the DC-DC will free-run at some frequency in that frequency range probably.
 
berkeman said:
Welcome to the PF.

It probably means that you can synchronize the DC-DC converter's switching frequency to an external clock in that frequency range. That is often done to avoid noise interference with other equipment nearby. If you don't supply a synchronizing clock, the DC-DC will free-run at some frequency in that frequency range probably.

Thank you for explanation! It helped a lot:approve:
 

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