Thank you for replying. I have another doubt with respect to the bulk/ input capacitor. I tried using the same formula that is given in the IC datasheet (page 27) to compute the Cbulk value but the value I got is too high (around 340uF) but using actual…
Part Number: UCC28704 Tool/software: Hi Team,
As we are proceeding with the UCC28704 Flyback converter, we identified that the Zenner Diode placed in the return current part of primary transformer. Which is only available in SLU603B - Design tool calculator…
Part Number: UCC28704EVM-724 Other Parts Discussed in Thread: UCC28704 Tool/software: Hi TI Team,
My design specification are same as EVM but output current is 2.5A for 5V. Please answer my below question
1) Can I use same transformer (750315841) for…
Part Number: UCC28704 Tool/software:
Hi there,
we are designing a new product which requires a 230VAC to 5V DC with 2.5A of current rating, and we found that the flback controller part " UCC28704DBVR-1 " is best suit for us,
In that we have…
Part Number: UCC28704 Other Parts Discussed in Thread: UCC28600 Tool/software: Hello guys,
One of my customers is looking for a AC/DC converter IC for 10W class flyback topology converter. They want to design AC/DC power supply as small as possible. There…
Part Number: UCC28704 Tool/software: Hi Sir,
We looking for a power supply or any IC which we can use to design power supply with following specifications : 1. Input Voltage range: 90 - 528VAC OR 100 - 745VDC 2. Output: O/P1: 5V/1Amp O/P2: 5V/0.2Amp 3.…
Hi Craig,
Good to know that CS pin capacitor was of some help.
The spike is ok as long as it is within the blanking interval. If outside this, it might trip OCP condition. The 220pf with the 5k resistor is too huge delay and that is why it is causing…
Part Number: UCC28704 Tool/software: Hi Team,
Do we have a 400Vin buck controller that is FUSA rated and or has UL documentation?
Thank you.
Kind regards,
Wouter Kragt
Part Number: UCC28704
Tool/software:
Hi,
Could you review the schematic for startup fail issue?
2821.Schematic.pdf
In the customer's board, tried to turn on and there is startup fail after 50~60ms as below.
Thanks.
