Part Number: UCC2894 dear sir,
I am a switch power supply engineer; I am trying to use active clamp to improve the efficiency and smaller the total size of power supply.
But i just found Active clamp used with forward topology usually;
Could you help…
Hi,
You need to specify your OCP or short circuit protection specs.
UCC2894 has embedded OCP in cycle by cycle current limit, which is also ok for short circuit protection. You need to decide if these ok with you or you need different. If different then…
Other Parts Discussed in Thread: UCC2894 Hello All
We are using UCC2894 controller for flyback Converter, We have two questions regarding UCC2894.
1. What is the Minimum operating frequency of UCC 2894?
2. What are the Maximum values of Ron and Roff Resistors…
Other Parts Discussed in Thread: UCC2894 Hello,
We are using UCC2894 for flyback converter.
Initial status of all pin are
LineUV >1.27, LIneOV<<0.1
Vref=5, Css charges to 4.5V and FB =5V, Rslope is as expected.
Problem arises when i slowly increase…
Part Number: UCC2893 Other Parts Discussed in Thread: UCC2891 , UCC2892 , UCC2894 , UCC2897A , LM5025C , LM5025B , LM5025A , LM5026 Hi,
Any alternative suggestion to UCC2893 controller? Thanks
Vito
Other Parts Discussed in Thread: UCC2894 Hello,
I am trying to get the UCC2894 working in standing alone operation.
The IC gets his 13,5V and he supplies Vref = 5V but the Softstart doesn´t start.
In my opinion I have a problem with the lineover…
Thanks Hong,
now i have a pwm signal at OUT and AUX but with changing RON I can´t change the time of my out-signal.
ROFF changes the length of the AUX signal and so does RON too. What is wrong?
Is it possible to get an oscillator frequency of…
Part Number: UCC2891 Other Parts Discussed in Thread: , , UCC2892 , UCC2893 , UCC2894 Hello!
Can I use your UCC2891X with Secondary-side regulation?
I do not have auxiliary winding and would like to power the IC from the primary winding and use an optocoupler…
Part Number: LM5026 Other Parts Discussed in Thread: UCC2891 , UCC2892 , UCC2893 , UCC2894 , UCC2897A
Hi E2E
When customers use LM5026 and refer to datasheet 8.2 and Figure 31, if they encounter problems with UVLO, please help to confirm and eliminate them…