S
Steve
- Jan 1, 1970
- 0
Hi again,
A problem in push-pull converters are to achieve exactly the same
magnitude of switch current in both halves of the primaries to avoid
"flux walking". Is there any other ways than go for current-mode, to
achieve balance in this respect?
One thing I though of; is it possible to "take a snapshot" of the
primary-current through the "top" switch by a sample and hold circuit,
and drive the "low" switch until its current is equal?
This would mean that only the top switch is pure pulsewidth modulated
while the low switch is current controlled with respect to the top
switch.
Regards,
Stefan
A problem in push-pull converters are to achieve exactly the same
magnitude of switch current in both halves of the primaries to avoid
"flux walking". Is there any other ways than go for current-mode, to
achieve balance in this respect?
One thing I though of; is it possible to "take a snapshot" of the
primary-current through the "top" switch by a sample and hold circuit,
and drive the "low" switch until its current is equal?
This would mean that only the top switch is pure pulsewidth modulated
while the low switch is current controlled with respect to the top
switch.
Regards,
Stefan