UC/3/4/5. UC/3/4/5. October CURRENT MODE PWM ZED FOR OFF LINE AND DC TO DC. CONVERTERS. UC Switching Controllers are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for UC Switching Controllers. Texas Instruments UC Series Switching Controllers are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Texas.
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More detailed schematic as below for your check: Meanwhile, since this is an industry-wide forum, I invite other viewers, inside and outside of TI, who may already have a solution to offer their advice on this matter.
Do you have something that can share with me, thanks a lot! Maybe that will snub the excess ringing, but D2 will block any drop on the Vaux rail and T1 will stay off. The newly created question will be automatically linked to this question.
This seems to be a long on-time for a protection condition. Ask a new question Ask a new question Cancel.
It seems to me that 2W is a lot of additional standby power that the R-C snubber alone wouldn’t account for. From high voltage, this might account for the extra power.
Repairing Switching Mode Power Supplies | audioXpress
Regards, Ulrich Locked Cancel Do you have another question? Below are two waveform with normal load status and 5V output load shorted to GND: Mar 10, 3: TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right.
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In reply to Ulrich Goerke:.
Please consider this investigation as another option to solve the main problem to achieve hiccup mode. I’ll try to respond as soon as I can. We are glad that we were able to resolve this issue, and will now proceed to close this thread. However, the reality is cruel If this filter can be made smaller, the Ipk will be lower and maybe the leakage inductance ringing will be smaller, too.
This can allow a smaller R-C snubber to be used at AUX to dampen the remaining ringing and reduce standby power. So based on above information and description, can you or anyone give a available solution to realize Hiccup u2842 with our UC? When we uf2842 the output of auxiliary winding output voltage and Vaux, it seems the Vaux is not ux2842 down due to that these is leakage inductance, so it seems Vaux is not pulled down.
Ask a related question What is a related question? Mar 10, 8: Mar 12, 7: Menu Search through millions of questions and answers Cu2842. All content and materials on this site are provided “as is”. Mar 10, 1: More detailed schematic as below for your check:. BTW, not sure how other customer realize the protection feature? No license, either express or implied, by estoppel or otherwise, is granted by TI.
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Hello U2842, I have a few thoughts about this, although not a definitive answer. Go to Support forums. If you have a related question, please click the ” Ask a related question ” button in the top right corner.