Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

ISOLATED AND NON-ISOLATED DC-DC CONVERTERS

Status
Not open for further replies.

CM600

Member level 3
Joined
Jan 26, 2004
Messages
63
Helped
3
Reputation
6
Reaction score
1
Trophy points
1,288
Location
BG
Activity points
556
What is the difference between isolated and non-isolated DC-DC converters?
 

Isolated DC-DC converter normally have their outputs and inputs galnacically isolated through (transformer and/or opto isolators) example of isolated converters: flyback, forward push-pull etc.., non isolated have their outputs and inputs use the same reference, example buck, boost, linear regulators etc... more details are abundant.
 

Usually the DC-DC converters are placed inside the chip to avoid IR drops. But in the case of Switching converters,EMI will effect the circuits the converter is driving. Hence in the board level layout, we tend to isolate them. This is because the EMI will take effect till about 100 MHz in most of the cases.

So, I suppose, isolated converters are those with switching elements in them like Buck/ Boost and non-isolated are which do not inject high frequency noise like LDOs.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top