TOP264 Fast shutdown need!
Posted by: simpa40
on
Hi,
Im designing a smps for traffic led lights using top264. The switching works fine but i have a problem.
When im trying to shut down(cut the power) my circuit, it's sustain the output voltage(40v) for about 1sec.
Because i work on traffic lights designing and the on and off time is crucial i want some help with this issue.
Thank you in advance
Nick
Comments
Hi,
Yes, you can use fast AC reset circuit to reset the latch quickly or to shtdown the power supply faster.
Regards,
PI-NANO
Thank you very much PI-NANO.
you helped a lot!!!
Cheking again the TOP264-271 datasheet I found a circuit shown at figure 24 that may help...
Please somebody help with this problem.
Thank you in adbance NIck