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Part Number: UCC28730-Q1 Tool/software: I have designed a 23 W Flyback-Converter with 1Outputs with a Inputvoltage of 250-800V and an Outputvoltage of 11V/2.1A. I am now trying to put the PCB in operation, but I am facing unstable switching behaviours…
Part Number: UCC28740-Q1 Tool/software: Hello
We are planning to use, UCC28740QDRQ1 and UCC28730QDRQ1 in our design, But we need it to operate over a temperature range of -55 to 150degC . But as per datasheet recommended operating temp is given as -40 to…
Hi Dale,
One thing which you could try is cutting the Vs signal trace on PCB if it exists on outer layer and try running a wire directly from AUX to these resistor and connect to pin to see if there is any difference in performance.
Regards,
Harish
Part Number: UCC28730-Q1 Other Parts Discussed in Thread: UCC28730 Tool/software: Hi expert,
UCC28730 has this curve for EA output to current output.
Between 1.3-2.2V, IPP control a fixed on-time and FM increase the switch frequency to increase the output…
Part Number: UCC28730-Q1 Other Parts Discussed in Thread: UCC28730 Hello,
We have a concern about creepage at UCC28730-Q1 device.
We have detected that in our design, we will have up to 510Vrms between HV pin and DRV pin.
We need to ensure that the creepage…
Part Number: UCC28730 Other Parts Discussed in Thread: UCC28950 Tool/software: Hi
Do you have any recommended power solutions for the specifications below?
I want to implement them in analog, not digital.
-SPEC-
Input: DC 300V
Output: 65V 83A
non i…
Part Number: UCC28730-Q1 Other Parts Discussed in Thread: UCC28730 Hello,
Regarding the controller UCC28730-Q1, I have another 2 concerns:
1. In order to keep the stability in all the operating range, it is indicated the next equation of Cout (Ecuation…
Part Number: UCC28730-Q1 Dear Team,
Customer has been analyzing the UCC28730-Q1 datasheet, and raised some queries regarding the control. Please, can you give us your feedback?
VCCR parameter
Datasheet: “The term VCCR is the product of the demagnetization…
Part Number: UCC28730 Tool/software: How can I calculate duty cycle and ton for a given frequency of operation of this device?
For example, at 28kHz the peak primary current will be Ippmax/3 according to the control-law profile. What would be the corresponding…
Part Number: UCC28730-Q1 Other Parts Discussed in Thread: UCC28730 , UCC28700-Q1 , UCC28700 , UCC24650 Tool/software:
Hello,
We have a requirement of 15W power , with output being 28V and 0.5A Load.
115V AC, 400Hz is the input voltage leading to 270V…
