Part Number: UC3843A Hi
I'm using a UC3843A PWM controller for a buck converter topology. for the light load condition everything is working fine, but when I increase the output power the duty cycle drops from 96% to 50%! this cause drop in the output…
Part Number: UC3843AUC3843A support,
Our customer is using the UC3843A in an isolated DC-DC flyback design. The output isn't stable, oscillating from about 3 to 3.6V, while the target is 3.3V. They followed the Webench design very closely, although…
Part Number: UC3843A Other Parts Discussed in Thread: UC3843 Hello
I'm using UC3843AD8 SOIC8 package IC for PWM generation. When I give power to IC it is getting worm on 12V . But when I was giving 24 Vdc power supply it is more heated .
Here is my…
Part Number: UC3843A Other Parts Discussed in Thread: UC3842A , SN6501 , UCC12050 Hi team,
My customer wants to determine the value of the pull-up resistor to set Vcc to the appropriate value. How can they calculate this value?
Regards,
Takashi Onawa
Part Number: UC3843A Hello
Ive designed a mosfet driver using a UC3843A. Have ramp oscilations100kHz at pin 4 but no oscilations at output pin 6, can you help
Part Number: UC3843A Greetings!
I have a PLC Power supply with multi output values (6v, 16v, -16v). The problem is: the UC3843A controller doesn't start and voltage at VCC pin always 7.4V so it is always in UVLO status.
Power supply specifications…
Part Number: UC3843A Other Parts Discussed in Thread: UC2842 , UC3843 Hello Guys,
Using the schematic from Figure 25 of the datasheet below, if the customer will replaced UC2842 with UC3843, can he achieved an output of 15V, 1A ? If so what modifications…
Part Number: UC3843A Dear Sir,
I am facing issue while designing DC to DC converter using device UC3843A.
Input Voltage- 18V Dc to 60V Dc
Required output- 12V Dc.
Required Current- 0.5A.
Issue:- Not able to perform load regulation.
please help on this…
Part Number: UC3843A Other Parts Discussed in Thread: UC3843 Dear Sir
hi this Basavesh BR
we design 24V 54watt AC To DC converter using UC3843. but not working properly please help me solve this problem
Part Number: UC3843A Other Parts Discussed in Thread: UC1844A Hello Everyone,
Currently, we are working on a flyback converter of 120W output. We are using UC3843A in which we are getting output but we are facing many problems which are listed below:…