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.

How to design a transient-load generator?

Status
Not open for further replies.

chanchg

Junior Member level 3
Junior Member level 3
Joined
Mar 4, 2005
Messages
31
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
1,525
Transient-Load Generator

I am a newbie in Electronics Design... How to design a transient-load generator to test a Buck-Regulator output?

Thanks in advance..
 

Re: Transient-Load Generator

The easiest to build, and one of the best methods, in fact is to use a MOSFET that connects a load resistor across the output. The resistor is equal to Vout/Istep, where Istep is the desired change in output current.
So you will have one load that the buck normally sources power to (another resistor even) and in parallel with that you connect another, using the MOSFET.

The MOSFET should be drien by a square-wave from a generator, through a gate resistor. By changing the gate resistor you get different current rise times.

Though simple, this method is very effective and easy to implement.
 

    chanchg

    Points: 2
    Helpful Answer Positive Rating
Re: Transient-Load Generator

Thanks VVV... But how by varying Gate resistor can we have different current rise time.. Can you please elaborate with an example?

Thanks
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top