Part Number: UCC256403 With different dimensioning I either get no burst functions at low load and high input voltage or the power supply does not start up but remains in ‘continuous burst mode’.
Is it possible to have your circuit diagram…
Part Number: UCC256403 Other Parts Discussed in Thread: TIDA-010081 Hello TI, I would like to know if the UCC256403 controller has an internal power/current limit? Because I would like to size an LLC type power converter with a nominal power of 1200W…
Part Number: UCC256403 Hello TI team,
I just use UCC256403 for LLC design and calculation result attached. It's working well at all load conditions. The only issue I found is that at soft startup, the resonant current is very large.
Below is the first…
Part Number: UCC256403 Other Parts Discussed in Thread: PMP40766 , Hi TI Experts,
I am using UCC256403DDBR for my 500W charger based on PMP40766 design. LLC IC UCC256403 populated in a seperate control card. Now i want to seperately test this control card…
Part Number: UCC256403 Other Parts Discussed in Thread: UCC256303 Tool/software: Hi
We are planning to use parallel MOSFETs in LLC topology for current sharing. Since, the RVcc maximum current is 100 mA, so we are deciding to go with external LDO for driving…
Part Number: UCC256403 When selecting the worksheet for the feedback circuit with the above tool, you can see very nice Bode and phase diagrams.
However, as soon as I change a value even slightly, the graphs disappear.
Is there an update button or similar…
Part Number: UCC256403 I have designed an LLC resonance converter with a UCC256403 and now I have the following problem.
( Key data: Uin: 220V < 275V < 320V Uout : 24V / 720W fnenn: 100kHz )
Unfortunately, the converter only works at higher…
Part Number: UCC256403 Other Parts Discussed in Thread: PMP40766 Hi TI Experts,
I designed 60V/10A CC CV power supply using UCC256403. I am using front end PFC with 400V output. My transformer turns ratio is Npri:Nsec:Nbias = 24T:6T:3T. I am using BW…
Part Number: UCC256403 Hi expert
my customer had two question about UCC256403
1. there isn't show the max voltage of pin5(FB), pin7(VCR), what voltage can these pin support?
2. is this HB in picture is right? we think it may be HS？
