Part Number: UCC28950 Other Parts Discussed in Thread: UC3875
Tool/software:
Hi Team, Good day!
For one of our customer we are designing power converter module using PSFB topology.
Control IC we are considering as of now is UCC28950. The block diagram…
Part Number: UCC28950 Tool/software: Dear Mike,
If SS Pin voltage discharge to higher than output enable threshold voltage 0.55V then power on , does the SS internal charge constant current is not 25uA,
Best rgds,
Felix
Part Number: UCC28950 Tool/software: Hello ,
I am working on UCC28950 controller for PSFB design of DCDC,
I have assembled controller board as per schematics attached and trying to check the PWM waveform (OUT A~ D) without connecting Power MosFET .
…
Part Number: UCC28950-Q1 Other Parts Discussed in Thread: UCC28951 , UCC28950 Tool/software: Hello TI Team,
We are working on the High voltage to Low voltage converter & there we are referring Phase Shifted Full Bridge topology. We are planning to use…
Part Number: UCC28950 Tool/software: Dear Expert,
I faced an issue of UCC28950 is the failure of the soft start function during continuous on/off testing as bellow, is it normal?
Ch1:SS pin Voltage
Abnormal SS pin voltage:
Normal SS pin voltage: …
Hello,
Your converter looks like it is going into burst mode and your output capacitor (Cout) may not be the correct size.
The following link will bring you to an application note that goes through the step by step design process of a phase shifted…
Part Number: UCC28950
Tool/software:
I am trying to operate UCC28950 Phase shift IC on VCM. I have followed the instructions in data sheet and on this forum. I want to ask that can I operate this IC without connecting it to my converter circuit? I actually…
Part Number: UCC28950 Tool/software: Initially, I am designing the UCC29850 Daughter Board with minor changes for use on the power supply
I opened the UCC28950_trans.opj, from SLUM169, copied U4, UCC28950 from the schematic and placed on a new project…
Part Number: UCC28950 Tool/software: Hi,
I have recently been testing a phase-shifted full bridge design using the UCC28950 chip. It is a standard design implementation of the chip using PCMC.
In the open loop-response, there is a sharp drop in gain…
Part Number: UCC28950 Tool/software: Hi,
In TIDA-020031, CS pin is connected to Vref through a 0 ohm resistor. Please could you explain why is it connected to Vref in parallel with the current transformer output?
Please see image below:
Thanks