Mike O' said: Here is the RMS current equation for a trapezoid. You should be able to do it for D and (1-D) then it is the square root of the RMS currents squared and summed.
This formula is correct. You can derive same as mine result from this formula…
Hello Mike!I really appreciate your help! I think I understand now, how this circuit should look like. So the next step is to try it on a bench to see if it will resolve hiccup issue.I also made an LTspice model, please see attached picture.
Is this…
Part Number: UCC28951 Other Parts Discussed in Thread: UCC3895 , UCC28950 , UCC2895 I am interested in using UCC28951 for an isolated AC/DC battery charging application (24V ~ 48V) supplying upto 1.3kW.
Please see screenshot of efficiency comparison between…
Part Number: UCC3895 Other Parts Discussed in Thread: UCC28950 , UCC2895 Hello guys,
One of my customers is considering using UCC3895 for their new products.
Also they want to input a external clock to SYNC terminal. Their external clock frequency is about…
Part Number: UCC3895 Other Parts Discussed in Thread: UCC2895 , UCC28950 Dead time between gate pulses is set to 250ns but when measured using DSO I am getting around 500ns. after replacing the ucc3895 controller problem resolved, the same is happening…
Part Number: UCC3895 Other Parts Discussed in Thread: UCC2895 Hello,
I would like to ask you about the RDEL settings for the UCC3895. When I designed it before, the data sheet I referred to didn't mention the recommended range of RDEL. Therefore, the…
Part Number: UCC3895 Hello,
I am investigating the dead time of UCC3895. (Question 1) The formula for calculating the dead time (Tdelay) is shown in formula(3) of the data sheet. Does Tdelay become 25ns when RDEL of the formula is set to 0Ω? (Question…
Part Number: UCC3895 Hello,
In this device, the frequency of the oscillator inside the device is determined by the constants of the parts mounted on the 7-pin CT and GND, and the 8-pin RT and GND. I have SYNC input a 270kHz pulse waveform from the outside…
Part Number: UCC3895 Hi,
I have set DELAB and DELCD to 220ns and 250ns Respectively in UCC3895. ADS function is turned off. But in two instances, delay time changed to 120ns once and 550ns in another instance. After replacing the IC UCC3895 delay is back…
Part Number: UCC3895 Other Parts Discussed in Thread: UCC28950 Hi, I would like to get help with UCC3895.
I was designed phase shift full bridge converter 400V/2A.
But the UCC3895 doesn't operate that effective duty is 0.
If effective duty is 0, duty…
