Flyback load transient test

[Hammy]

What is a typical period and pulse width of a load transient test on
60kHz flyback converter. I've been reading datasheets and there
doesn't seem to be any consistency. They range anywhere from a few
milliseconds to over a hundred; is there not a standard? The load step
is also anywhere from 0 to 100% to 50 to 100%.

Are they just selecting the test condtion that provides the most
favourable results?

Thanks

 

[John Larkin]

On Thu, 27 Mar 2008 12:08:17 GMT, Hammy <spamme@hotmail.com> wrote:

What is a typical period and pulse width of a load transient test on
60kHz flyback converter. I've been reading datasheets and there
doesn't seem to be any consistency. They range anywhere from a few
milliseconds to over a hundred; is there not a standard? The load step
is also anywhere from 0 to 100% to 50 to 100%.

Are they just selecting the test condtion that provides the most
favourable results?

Thanks

Of course there's no standard test, because there's no standard load.
It might be powering a precision RF amplifier or running an LED
backlight or charging a battery.

John

 

[Phil Allison]

"John Larkin ASD "

Hammy

What is a typical period and pulse width of a load transient test on
60kHz flyback converter. I've been reading datasheets and there
doesn't seem to be any consistency. They range anywhere from a few
milliseconds to over a hundred; is there not a standard? The load step
is also anywhere from 0 to 100% to 50 to 100%.

Are they just selecting the test condtion that provides the most
favourable results?

Thanks

Of course there's no standard test, because there's no standard load.
It might be powering a precision RF amplifier or running an LED
backlight or charging a battery.

** Irrational, irrelevant drivel.




....... Phil

 

[John Larkin]

On Fri, 28 Mar 2008 14:10:21 +1100, "Phil Allison"
<philallison@tpg.com.au> wrote:

"John Larkin ASD "
Hammy

What is a typical period and pulse width of a load transient test on
60kHz flyback converter. I've been reading datasheets and there
doesn't seem to be any consistency. They range anywhere from a few
milliseconds to over a hundred; is there not a standard? The load step
is also anywhere from 0 to 100% to 50 to 100%.

Are they just selecting the test condtion that provides the most
favourable results?

Thanks

Of course there's no standard test, because there's no standard load.
It might be powering a precision RF amplifier or running an LED
backlight or charging a battery.


** Irrational, irrelevant drivel.

You have been charged with being coarse, offensive, and nasty. This is
a very serious offense.

You are hereby declared guilty, and given a life sentence of being
Phil. [1]

John

[1] roughly 5e-10 of the ultimate age of this universe. And you're
wasting it being a mean jerk.