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

low R(ON) switch circuit

Status
Not open for further replies.

poweric

Member level 5
Joined
Oct 29, 2006
Messages
80
Helped
3
Reputation
6
Reaction score
0
Trophy points
1,286
Activity points
1,733
i want to get a low R(ON) switch circuit in order to get larger current

who can give me some help ,tips OR papers
 

A.Anand Srinivasan

Advanced Member level 5
Joined
Oct 15, 2005
Messages
1,804
Helped
257
Reputation
514
Reaction score
39
Trophy points
1,328
Location
India
Activity points
10,680
use MOSFETs in parallel because of their negative feedback to temperature effects this doesn't cause any problem due to thermal runaway too....
 

btbass

Advanced Member level 5
Joined
Jul 20, 2001
Messages
1,897
Helped
438
Reputation
880
Reaction score
287
Trophy points
1,363
Location
Oberon
Activity points
12,861
How much current you talking,
For large high voltage currents IGBT is the way to go. It is not just the low on resistance that matters, Switching losses are the problem. During switching, the power dissipated is the average.
IE: Average power during switching = A/2 * V/2.
So, no matter how low your R(on) is, how fast and how often you switch is the problem.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top