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.

Register Log in

[SOLVED] DC chopper versus Buck converter

Status
Not open for further replies.
sribalaji

sribalaji

Junior Member level 2
Joined
Jul 12, 2010
Messages
23
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,283
Location
India
Activity points
1,441
Hi..This is my first post in this forum..
I'm supposed to convert 150-350vdc into a constant 110vdc for a certain application. The important criteria is to minimize the size of the circuit. So instead of using a buck converter which usually involves a bulky inductor may i go for a simple DC chopper circuit? For what applications we normally go for smps? I must design this converter to drive a solenoid.
Solenoid specification: 110vdc;
4A


Thanks..
 

For an output power capability up to 500W (110V/4A) you may need to use half bridge converter / full bridge topology.
 

If you want to make a regulated voltage, then you will need either a SMPS (which will always involve an inductor or transformer) or a linear regulator (which will be inefficient). A chopper should work okay so long as the solenoid can tolerate the high peak voltages involved, and you keep ripple current low. You would need to have some feedback or feedforward to change duty cycle based on input voltage, though.
 
A DC chopperi seffectively operating a s a buck converter, in so far there's no difference between both. If you mean to feed the chopped voltage to the solenoid directly, you'll use the solenoid as converter inductor. As said, you have to check the volatge rating, and select the chopper frequency for reasonable current ripple.
 
Thank you all for the help provided...
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top