Part Number: UC1854 Other Parts Discussed in Thread: UCC28070 Tool/software: Hello,
For a school project, I want to implement PFC for a 1.5kW, 115Volt AC (phase to phase) 400Hz mains input. This is the most suitable integrated circuit (IC) I could find…
Part Number: UC2854B-EP Other Parts Discussed in Thread: UC2854 , UC1854 Hi
I am using UC2854 for 115V, 360Hz to 30V convertion for 15W power supply, For room temperature gate pulse starting at 2nd negative cycle itself, but while testing at 110deg…
Part Number: UC3854 Other Parts Discussed in Thread: UC1854 , UCC28070 , UCC28180 , UCC28019 , UC2854 I started designing with the UC3854, but found that the operating temperature rangetemperature condition of 0-70°C is NG.
From the product specifications…
Hello Yunsheng-san,
Thank you so much.
Could you please check if UC1854 and UC2854B-EP accept DC input as well?
I think they should work in -54degC environment.
Regards,
Itoh
Part Number: UCC28513 Other Parts Discussed in Thread: UC3854 , UC1854 Hi Experts,
Good day. Seeking your assistance on this query from a customer:
"I have a PFC boost converter design based on the data sheet of this chip. It is a 150W power supply…
Hello Luca,
To clarify, the bandwidth of a PFC voltage-loop is usually set below 20Hz so that the compensation network attenuates the twice-line frequency ripple on the COMP pin, is the major contributor to 3rd-harmoinc distortion.
There is an old…
Hi Ulrich
In Pg.No 4 of the file slup093.pdf you have shared says second harmonic magnitude is 66.6% of average value attached snip below.
The full wave rectified sine wave 2nd harmonic is actually 6.67% instead of 66.67% as per the fourier series…
Hi Stuart,
When designing PFC for avionics, the most important thing is to minimize the crossover distortion (which is the lack, or plateau, of current drawn from the AC mains, during zero crossing). This can be done by minimizing the capacitance placed…
