hello mike my design is totally reference to UCC28750EVM-071，so i use values of UCC28750EVM-071 to fill in UCC28750-calculator tools，but some of items are not really sure. so please help to check if the value of user input correct or not. attachment below…
Part Number: UCC28750EVM-071 Tool/software: Hi,
While testing UCC28750EVM-01, an unknown behavior is observed in snapshot. Please explain what is corresponds to and why it's coming ?
PFA Snapshot containing the waveform of FB pin ( Yellow) , Vout…
Part Number: UCC28750 Other Parts Discussed in Thread: UCC28704 , UCC28742 , UCC28722 Tool/software: Hi,
I would like to use the UCC28750EVM-071 design as a starting point for a high input voltage, isolated, DC-DC converter. Input voltage range = 200Vdc…
Part Number: UCC28750EVM-071 Tool/software: hi
I made a PCBA with reference to ucc28750-EVK. All components used are the same as EVK’s BOM, The sample can stably output 24V. But when the sample is working and the load is greater than 3W, buzzing noise…
Part Number: UCC28750 Tool/software: Hi,
We are using the UCC28750 EVM to design into our project. We have some questions that need to be verified:
1)Because the UCC28750 series has different features such as OTP (Over Temperature Protection), OVP…
Part Number: UCC28750EVM-071 Other Parts Discussed in Thread: UCC28750 , UCC27531 Tool/software: hello I've referred to the design of UCC28750EVM to make a test samples, here is the schematic:
Part Q3 is the controller switch, and it's part number is…
Hello,
The UCC28750EVM-071 was designed to handle 60 W. So as you increase the power above 65 W the design is going into over current protection protecting the design.
https://www.ti.com/lit/ug/sluucw5/sluucw5.pdf
If you need the design to work…
Part Number: UCC28750EVM-071 Tool/software: Do you have information on purchasing a 200W development board that inputs AC single-phase 220V as input power and outputs DC 9~24V voltage (MCU control)? (It is okay if the output power is lower than 200W)…
HI Lucas,
Your Aux winding voltage should look something like this:
This is taken from the UCC28750EVM-071 Users guide.
If you see this and VDD is still dipping below 9.5V, What are you seeing at the node I labeled as Vaux2?
