Part Number: UCC28704 Hello, I have designed this UCC28704 AC/DC flyback converter circuit. I am wondering if the return path of the bridge rectifier is correct?. Also, can you help me find a compliant PN for a transformer to be used with the Converter…
Part Number: UCC28704 Dears,
Customer feedback that when they use UCC28704 flyback power supply,Output Volatge is 15V/1.2A,when the load is light,the output is normal and when the load is heavy,the output is unstable.
Pls kindly help to check the schematic…
Part Number: UCC28704 Hello Team,
As I read in the data sheet, the CS pin is typ. 356mV with constant current regulation.
During a measurement I noticed that the voltage is up to 750mV with constant current regulation, as you can see in the following…
Part Number: UCC28704 Hi,
We are producing the custom board(28704) as follows.
R116, R138, FET(Q14), R89, R137 are burned in a few boards.
we are using the 15V_aux power for the ucc 256303 and using the 15V_ISO power for the UCC24612-2
can you help me…
Part Number: UCC28704 Any one can server for the question, thanks.
What maximum power level can UCC28704 support?
What is the minimum operation voltage of VCC? Is 8.5?
Enables <30-mW No-Load Input Power: Are there any conditions for this No-Load Input…
Part Number: UCC28704 Hi experts,
The customer has came across the problem that the UCC28704 can't work normally in their flyback circuit.
Circuit parameter and test condition:
1. Vin_flyback= 24V, Vout_flyback = 24V.
2. Flyback circuit are…
Part Number: UCC28704 Hi Expert,
Customer is using UCC28704 on their design. When they test the load transient performance. They found some strange phenomenon on the VDD current.
when adding 0.1ms and >0.8A load, the I_VDD current becomes higher even…
Hello,
On the e2e we give advice on circuit design and debugging designs. We also help the engineer debug simulations issues. So I will not be able to run a simulation for you. If you can tell me what errors you are seeing we can give guidance on how…
Part Number: UCC28704
I am currently testing Conductive Immunity/Susceptibility (IEC 61000-4-6) on a product using the UCC28704 and the supply voltage collapses at levels 3(10Vrms) and level 2(3Vrms).
Once the field is removed the supply returns to normal…
Part Number: UCC28704 Hi,
Hope you are doing good.
We are trying to run the simulation model of ucc28704 based on the webench provided report.
The output is falling to zero and the VDD pin is reading 100V which is way too high from the datasheet.
I am…
