Hi Bastiaan,
thanks for your interest in TI. This paper is not an exact match for a bipolar flyback design but you may find it useful: www.ti.com/.../slup261.pdf.
Also take a look at UCC28720 which can be used in a flyback bipolar design. The design…
Hi Alberto,
Aplogies for nor responding to your reply from March! I am not sure what happened I normally get a system driven reminder that I have not replied.
The Excel calculator for the UCC28911 is at http://www.ti.com/product/UCC28911/toolssoftware…
Hello Ras,
The UCC28722 drives IGBTs and is better suited for extremely high voltages and would work for your application.
However, the UCC28701 is designed to drive FETs and will also work for your application.
They both use trickle charge startup…
Hello Eric,
Thank you for your consideration of the UCC28910 flyback controller with integrated switching MOSFET.
The maximum rating for the integrated MOSFET is 700V. For your Products 2 and 3, the input line of 277Vac represents a maximum rectified…
Dear Bob,
There is also an isolated reference design that uses the UCC28720, drives a BJT, and meets your output specifications pretty closely: http://www.ti.com/tool/pmp4366 In regards to this being an isolated configuration, if you short all the grounds…
Jean,
I think you will be better off using a BJT device.I recommend some changes to your design. The baseline design you are using is probably not the best choice for this. I would recommend that you look at PMP8678. In the referenced design, it is…
Other Parts Discussed in Thread: UCC28720 Dear TI people, Regarding the parameters tON(min) and tDMAG(min). For the UCC28720 a tON(min) specification is given of 300 ns and tDMAG(min) of 1.2 us. My first question is: Does the calculated value for tON…
Other Parts Discussed in Thread: UCC28720 , UCC28700 , UCC28722 , UCC28630 Hello All,
In all the datasheets of UCC287XX, following text appears,
Controllers, UCC2871x, UCC28720 have HV pins which directly connect to Vac Line or Vbulk Line. So, the…
Hi Evangelos,
Sure, you can increase the output capacitance to support the hold-up during transient events. The power supply will act as a current-source as you mention during startup and transient events. Keep an eye on the thermals of the FET and…
Bob,
Thanks for your interest here. You can always search reference designs at ti.com/powerlab. I found this one that looks much closer to your requirement:
http://www.ti.com/tool/pmp4372
This design uses UCC28720 which is very similar to UCC28722…
