Part Number: UCC256303 Hello. I'm making a 150W converter using the UCC256303. One problem I'm having right now is that the switching frequency doesn't seem to be stable. It's "jittering" when I look at the oscilloscope, and the transformer is making…
Part Number: UCC256303 Other Parts Discussed in Thread: UCC256403 Hi team,
In the datasheet, OCP2 threshold range for UCC256303 is defined as ~0.84V +/-19%. This tolerance looks large. My customer would like to set more tight and realistic OCP2 target. …
Part Number: UCC256303 Other Parts Discussed in Thread: UCC25600
Hello, I hope you can help me.
I would like to use UCC256303 without VCR pin.
Please let me know how to use this IC without VCR pin.
The reason is I would like to use this IC within the…
Part Number: UCC256303 Hello,
We have some issue about the shutdown about UCC256303..
We are producing the AC/DC smps controlled by UCC256303.
After one year, we are having the shutdown issue.
<Current State>
There are some of product. After…
Part Number: UCC256303
Hi Team,
Our customer simulated the UCC256303 in Webench and before he build the board he would like to ask for your opinion if the design will work.
https://webench.ti.com/power-designer/switching-regulator/export/158
Additionally…
Part Number: UCC256303 Other Parts Discussed in Thread: UCC256403 Hi Team,
UCC256303 shut down under light load and could not recover when switch light load to heavy load.
during this abnormal situation, we found that the LOpin continue goes high and…
Part Number: UCC256303 Other Parts Discussed in Thread: UCC256403 Hello All,
I am working on this IC, I want to simulate LLC converter using UCC256303 for different cases. Can anyone provide Spice simulation model.
Thanks,
Sumit.
Part Number: UCC256303
Good morning,
I would like to know if the UCC25630-3DDBR device can be used for an application that will have as nominal parameters:
Vin : 390 Vdc Vout : 54 Vdc Iout : 30 amp
Att, Gabriel Paulino
Part Number: UCC256303 Other Parts Discussed in Thread: UCC256403 We are following the guidelines in SLUA582A for tuning the feedback loop. As suggested, we modified the bulk voltage resistors to start the application at an input voltage low enough to keep…
Part Number: UCC256303 Other Parts Discussed in Thread: TLV431 , UCC25630-1EVM-291 , TL431 Hi,
we are building an LLC power stage with the following specs
VIN,NOM = 310VDC, VOUT = 85VDC, POUT = 600W
Simplified schematic attached for more details
After some…