Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic 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.

Register Log in

What are the pros and cons of using switched and linear power supply ?

Status
Not open for further replies.

spartan_MCT

Newbie level 3
Joined
Oct 30, 2007
Messages
4
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,302
What are pros and cons of using Switched and linear power supply
 

VVV

Advanced Member level 5
Joined
Nov 26, 2004
Messages
1,582
Helped
383
Reputation
766
Reaction score
86
Trophy points
1,328
Activity points
19,971
Re: Power Supply

Advantages of switching P/S:
Higher efficiency, resulting in lower heat, resulting in smaller heatsinks.
Smaller transformers, smaller capacitors, smaller overall packages.
Disadvantages: higher output noise, higher and harder to fix EMI, some stability challenges, usually more expensive, magnetics are harder to design and build.

Advantages of linear supplies:
Low output noise and ripple, can be very tightly regulated, usually the stability is not a great issue, few EMI problems.
Disadvantages: bulky, large transformers and capacitors required, low efficienty, meaning large heatsinks.
Also, you can only obtain an output voltage that is lower than the input voltage, never higher.
 

spartan_MCT

Newbie level 3
Joined
Oct 30, 2007
Messages
4
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,302
Re: Power Supply

Thank you for the reply. I am not that good in power supply. I just want to grab the basics. thanks ...
 

kender

Advanced Member level 4
Joined
Jun 19, 2005
Messages
1,422
Helped
138
Reputation
276
Reaction score
38
Trophy points
1,328
Location
Stanford, SF Bay Peninsula, California, Earth, Sol
Activity points
9,968

spartan_MCT

Newbie level 3
Joined
Oct 30, 2007
Messages
4
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,302
Re: Power Supply

Thank you kender the application note sounds great.
 

Awarapunshee

Advanced Member level 1
Joined
Jul 11, 2007
Messages
413
Helped
93
Reputation
186
Reaction score
32
Trophy points
1,308
Location
Some Where In Heaven
Activity points
3,193
Re: Power Supply

You can read the book "Power Supply Cookbook by Marty Brown" its initial pages makes you much aware of difference, it is also very good books for starting Power Supply. (you can download this book from this forum)

Good Luck and Regards
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top