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

Testing the stabiltiy of an LDO over the whole current range

Status
Not open for further replies.
O

OTA_LDO

Newbie level 4
Joined
Nov 18, 2013
Messages
6
Helped
3
Reputation
6
Reaction score
3
Trophy points
3
Activity points
43
:grin:Hi all
I am designing an LDO an I want to test its stability over the whole load current. How can I do that?. I thought of using a ramp for the load current does it work? Any help is appreciated
Greetings
 

A staircase waveform would add a load step excitation to the load variation and allow a visual stability check.
 

Paralleling a slow ramp and toggling pulse current
sources is similar to FvM's suggestion but perhaps a
bit easier to create. It will not give you canonical
Bode type results but let you eyeball large signal
overshoot (which I view as more useful a challenge).
However, even here you will find that behavior is
going to change depending on how hard you wind it
up. The worst challenge is min-max-min steps (the
min load case having the worst load-pole position,
against which to re-close the loop from a way skewed
excursion).
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top