Other Parts Discussed in Thread: UCC28740EVM-525 Hello ,
I have a question about UCC28740EVM-525. I have two questions about it.
question 1 :
i found in the secondary side there have a auxiliary circuit. i mean D7, R13, R14 and C9. i want to know what…
Hi Rajat,
Thank you for the query.
In short you cannot set frequency with resistor. These controllers are not fixed frequency PWM controllers like LM5021.The control will be based on control law described in page 16 of the datasheet.
You design the converter…
Dear Sir,
Thank you.
Lets say its 1000uF. Any voltage equation you know relating capacitor voltage of Cbuck(max) or Cout? I used Vbulk(max)=650 v, so 700v is okay?
Since output is 24V then how about 1000uF/50V?
I have few more query .
Here we go,
1. Your…
Hello,
There are many application notes in the UCC28740 product folder that can help with your design.
https://www.ti.com/product/UCC28740?keyMatch=UCC28740&tisearch=search-everything&usecase=GPN#tech-docs
The data sheet gives layout guidelines…
Part Number: UCC28180EVM-573 Other Parts Discussed in Thread: UCC28740EVM-525 , Hi,
I'm in need of the Gerber files for the UCC28180EVM-573 as well as for the UCC28740EVM-525.
It would be of great help if you guys provide me with the same.
Regards…
You need to go to "View online" to see the two documents. Or use the below two links to get the documents mentioned.
www.ti.com/.../ucc24630evm-636
www.ti.com/.../ucc28740evm-525
Other Parts Discussed in Thread: UCC28740EVM-525 , UCC28740 Hi,
Recently I received UCC28740EVM-525 10 W Constant-Voltage demo board. It can't start up with full load in low temperature (-25 degrees).
I tried several methods: increasing Vdd capacitor…
Part Number: UCC28740 Other Parts Discussed in Thread: , PMP10885 Hello,
I'm currently designing a 4.2amp 5v usb charging circuit for a customer. I used web bench for the initial design. It gave me a circuit very similar to the UCC28740evm-525, with…
Other Parts Discussed in Thread: UCC28740EVM-525 Hi TI:
Did you test UCC28740EVM-525 for EMI & safety? If you did, what items did it pass? FCC, CE, UL?
Thanks
Jimmy Chou