Hi Dan
The LM5046 is designed to run from a telecoms input and will run down to a 14V input. The UCC28950 can also work at this range but it is targeted at higher powers and is generally used on the secondary side of higher power designs running from…
30Vin to 29Vout requires about 97% duty cycle, which you may consider LM5045. But for your power level, the LM5170 in buck mode may be a better choice: it is dual phase controller with excellent power sharing balance, and you do need a small 10V bias…
Hi,
Thank you so much for your answer, you gave me very important details that prevented me to progress in trust
Colin Gillmor said: Finally, at low input voltages like yours the benefits of ZVS can be quite small and the losses due to the circulating…
Colin-san
Thank you for reply,
About UCC28951 (UCC28950), can UCC2895x use the case of Full-wave (Full-Bridge) Rectification on the Secondary side?
※Nearly as LM5045 and LM5046 application note: snva628a.
If can, i will choice UCC27714 on gate…
Hi, Henry
I recommend you to select LM5045 which is hard switching full bridge controller. For detail, pls refer to below link.
www.ti.com/.../snva468c.pdf
Also boost topology is good for your application if output voltage is always higher than…
Peng,
The error is a Library that cannot be found. It appears that the following file is not found:
.LIB "c:\eric_dt_20100326\lm5045 model\lm5045_pspice_022511\example\lm5045example3.lib"
Since this file appears to be for the LM5045, not the LM5046…
Hi Howard Zou,
Your customer should not use this part to control a half bridge.
A half-bridge driver will ensure that the outgoing gate goes low, then wait for a short 'dead time', before raising the incoming gate signal.
This dead time is very…
Hello user6022780 ,
The problem you see is some issue with Webbench and not a restriction of the UCC28C43.
I recommend that instead you use the POWERSTAGE Designer tool
http://www.ti.com/tool/POWERSTAGE-DESIGNER?keyMatch=power%20stage%20designer&tisearch…
Hi Rajesh
There are a number of options here -
1/ The LM5045 is limited to 105V AbsMax - 100V recommended max. If you were to use it on a 110V input then you would have to find a way to limit the V_IN pin to less than 100V - a relatively simple zener…
Other Parts Discussed in Thread: UCC28950 , LM5045 Hello, all
Now we have one inquiry regarding accuracy of switching frequency on UCC28950 from our customer.
Please refer to the item below, and feedback us with your comment.
When referring "Switching…
