Part Number: PMP20878 Other Parts Discussed in Thread: UCC2897A Just touched the power field,In the schematic diagram, how is transformer T2 and inductance L6 calculated to obtain VCIN of about 12.7v? PMP7410 SCH.pdf
Hi
I assume you got the 110V limit from the UCC2897A Webench tool. This is not a true limit of our device. In order for webench to perform the calculations necessary to derive an entire power supply in a fraction of a second, assumptions need to be made…
Hi Jerry,
The UCC256303LLC controller is designed for offline power designs where there is a regulated dc bus voltage provided by a PFC stage. The LLC topology will not work well with a wide variation in input voltage.
The UCC2897A can be used with…
Part Number: UCC2897A Hi Peter,
We want to design an isolation power supply based on UCC2897A, input voltage is 60Vdc-160Vdc, output is 48Vdc/3A, efficiency over 91%. But at present, this IC supports 110V voltage. I saw a design on TI website that is…
Hello Ras,
Yes you can use a low side reset with a 400V input.
The only issue is in finding high voltage P channel FETs suitable for your application.
You will be able to find these parts but the number of suppliers that makes such parts is limited and…
Hello Masazumi Ishii,
The PMP7410 uses a gate drive transformer and an N channel FET to return the clamp energy to the primary.
The EVM uses a P channel FET to return the clamp energy to the primary and it does not require a gate drive transformer.
The…
Hi TQ,
The UCC2891 is designed for telecoms input voltage range, 36V to 75V. For 100V to 240V I found a design using the UCC2897A active clamp controller, http://www.ti.com/tool/pmp7410 , it works from 220V to 400V with Vout of 12V at 13A.
www.ti.com…
Hi Minqi
We have a number of designs for 220Vdc to 400Vdc, the highest power is about 150W and the voltages are typically about 12V. PMP7410_REVD_SCHEMATIC.pdf