Hello Ashok,
For other viewers of this forum, I will reply here without violating any confidentiality of your design.
The current-sense resistors definitely do need to be specifically rated to handle the worst-case inrush current at first start-up. Based…
Part Number: UCC28019A hi Sir
I want to design a 1kw power, use the UCC28019A, I use the NTC to Limit the inrush
now ,I need to Add a Relay,in parallel of the NTC, did you have any advise ?
the ic have any pin to control the Relay?
Part Number: UCC28019A The design schematic diagram of UCC28019A is shown in the following figure. During harmonic testing, it was found that the I-THD (%) value exceeded 5%, which does not meet the design requirements. After replacing the inductor, there…
Part Number: UCC28019A Other Parts Discussed in Thread: UCC28019 , UCC29910 Hi Support team
Do we have UCC28019A but change for BUCK PFC solution, my customer is asking for
thanks a lot
Hi Samuel,
Thanks for the update. I highly recommend getting a current probe as magnetic components are hard to debug without measuring current. If you do not have a current probe available, you can try measuring the voltage across your current resistor…
Part Number: UCC28019A Other Parts Discussed in Thread: UCC28019 , UCC28180 , UCC28070 , PMP
Hello experts,
I wanted to verify my thought process with you.
I am planning to use UCC28019A to design a 600W DC-DC application. PFC followed by an LLC
input voltage…
Part Number: UCC28019A Other Parts Discussed in Thread: UCC28019
Hello,
I have simulated TINA average model of UCC28019A for 2.5kW classic PFC and have questions related to the MOSFET circuit.
In the UCC28019A EVM design ( here ), resistor R1, R5 and…
Part Number: UCC28019A Hi
Current oscillation occurs at AC100V / above 550W.
My customer wants to design a 700W system.
My customer said it was not coil saturation. Which part value should be adjusted?
And the ripple factor in the input capacitor is usually…
Part Number: UCC28019A Other Parts Discussed in Thread: UCC28019 Hello,
In the thread I referenced, the gate waveforms from the IC, on time is coming out to be maxed out.
As per the explanation mentioned in the thread:
"If you notice, your COMP voltage…