Part Number: UCC2801 Other Parts Discussed in Thread: UCC2800 , UCC2802 , UCC2804 UCC2801
Ct=220pF
Rt=36.5k
I am expecting an output frequency between 75kHz and 87 kHz, but I am getting 91.88 kHz. Confirmed in time domain and via FFT.
However…
Part Number: UCC2805-Q1 Other Parts Discussed in Thread: UCC2805 , UCC2801 , UCC2803 , UCC2802 , UCC2804
Hi Expert,
UCC2805-Q1 was used on customer side. When they configure frequency based on the formula in datasheet. The resistor is 15k, and the…
Hi Steve,
Thank you for your answer.
I think I will follow your proposal to use a component derived from Unitrode UCx84y I already used several times.
I identified in your catalog several references: UCC2802, UCC2813-2, TL2843 and UCC28C43.
They…
Do you refer to the D/S from ti.com?
https://www.ti.com/lit/ds/symlink/ucc2802-ep.pdf?ts=1663266031157&ref_url=https%253A%252F%252Fwww.google.com%252F
But I don't find section 9.3.6. Can you make a screen shot of the picture you mention?
Hi, Michael
I am considering to use UCC2802 to design a flyback.
1) Can I use the same transfer function in the slua671.pdf (for UCC28600) for my UCC2802?
2) The CTR (Current Transmission Rate) of opto coupler has a big range with temperature…
Hello zoujiangyilang,
It is easy enough to run the UCC3800 open loop at maximum duty cycle.
If you connect the FB pin to GND then the COMP pin will go to its maximum value and the duty cycle is maximum.
For a flyback application you will need to use…
Part Number: UCC2803 Other Parts Discussed in Thread: UCC2802 Hi all. I made DC/DC converter with UCC2803, based at TI Power Designer WEBENCH Design Report. I never used before flyback converters, so for first try I totally copied TI Power Designer references…
Hi Steven, Thank you for your reply. Here's the Rev D slus270d.pdf Kindly see below the snippets.. Furthermore, I've checked the SLUS270F, it seems that the "line regulation" for the UCC380x is not copied on SLUS270G. Can you please help confirm? Thank…
Other Parts Discussed in Thread: UCC28911 , UCC28740 , LM5023 , UCC2813-2 , UCC2813-0 , UC3842 , UCC2800 , UCC2802 , UCC28C42 , UCC28C43 Dear all.
I think about the multi-output by flayback. (DC3.3V/450mA, DC15V/10mA, DC-15V/10mA, DC24V/30mA) Our customer…
Hello Jerry,
The attached application note describes the differences between the UCC3800 family and the UCC3813. The UCC3804 is a member of the UCC3800 family of controllers.
Regards,
Mike
UCC3800-3813 Differences slua247.pdf
