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Simulators >> Circuit Simulators >> Step loading current in linear regulator
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Message started by newic on Jun 30^th, 2011, 4:04am

Title: Step loading current in linear regulator
Post by newic on Jun 30^th, 2011, 4:04am

After designing a linear regulator, i did a step response on the current loading from 0mA to max mA & from max mA to 0mA with a paramter tr (ramping rate). I put a tr=10ns, i see a big voltage jump, which exceed the max electrical over stress condition of transitors. What is the realistic ramping rate?

Title: Re: Step loading current in linear regulator
Post by YaBiBi on Jul 1^st, 2011, 2:41am

100ns is much resonable for load transient. Indeed the undershoot or overshoot depends on your loop performance.

Title: Re: Step loading current in linear regulator
Post by casual on Jul 7^th, 2011, 6:07pm

if the ramping rate frequency is higher than the bandwidth of the opamp, the opamp wont respond instantly, it needs some time.