Part Number: UC2879 Other Parts Discussed in Thread: UC3879 Hi Team,
I understand UC2879 is rated for operating ambient temperature of -40°C to 85°C. and UC3879 is rated for operating ambient temperature of 0°C to 70°C. when I look at the junction temperature…
Part Number: UC3879 Other Parts Discussed in Thread: UCC3895 , UCC28950 Dear all,
I am redesigning a full bridge converter as a Phase shifted full bridge converter using UC 3879.
I have a series capacitor in series with primary of the transformer. And a…
Other Parts Discussed in Thread: UC3879 Hello,
I want to sync UC3879 with an external clock pulse. In the application note( U-154) i saw that, the ic locks with the fastest clock pulse. I also saw that, to provide an external clock-pulse, i need to invert…
The start-up behavior of this controller is critical in our application. I have three questions that are not addressed by the datasheet:
1) The capacitor on the SS (soft-start) pin is charged from approximately 300mV to at least 4.3V with a 9uA (typical…
Hi Bliss Zhou,
Thank you very much for quick response, but I am afraid I still didn't get it. In UC3875 generator has a little bit different configuration compare to UCC2843 (BTW can't find chapter 8.3.9 in DS). Both, Rt and Ct goes to ground according…
Other Parts Discussed in Thread: UCC3895 , UC3879 , TINA-TI Hi
I'm familiar with the old UC3879 but need some help wiht the UCC3895. I'm using peak-current control.
With 3879 you can't limit the maximum duty cycle. The linear part can be set bu…
Hi John,
Thanks for the schematic attached.
Can you help on my previous posted question as below without associated waveform?
For the full bridge or phase shift full bridge, is the demagnetizing current flowing through the primary winding of main transformer…