Part Number: UCC28064A HI TI,
I have Current distortion issue with UCC28064A at 264Vac,160W. (Abrupt current increase) It does not occur when the voltage is below 220Vac.
Current distortion occurs near peak voltage.
At the peak voltage, two MOSFETs turned…
Hi Sam,
Diode D2 and transistor Q11 form an external soft-start function for the UCC28064A. At start-up, when AUX_15V is low, VCC input voltage is below spec and U3 does not function. VREF is driven internally to 0V (AGND). The base of Q11 is pulled to…
Part Number: UCC28064A Hello, Do you have any further readings I could use to better understand how the equations for Voltage Loop Compensation (section 9.2.2.11) are derived? I am trying to understand the logic behind Rz, Cz, and Cp selections. Thanks…
Part Number: UCC28064A Other Parts Discussed in Thread: TIDA-010015 I am looking at TIDA-010015 reference design which uses UCC28064A. In this design, two external gate drive ICs are used to drive the two MOSFETs in interleaved boost converters. Why are…
Part Number: UCC28064A Other Parts Discussed in Thread: PMP31179 I cannot see any major difference between PMP31179 and PMP30763 which may affects harmonic emission greatly.
However PMP31179 much worse than PMP30763 at 800Hz DO160 Harmonic test.
Could you pl…
Part Number: UCC28064A Hello Ti,
We are designing pfc with UCC28064A and we did not realize how to select RTset value.
It seems the Rtset value, not only affect maximum frequency, but also affect minimum frequency.
Can you give me a guideline about…
Part Number: UCC28064A Other Parts Discussed in Thread: UCC256404 , On the specs page I see that this device supports systems with power less than 150W. I planned to use this part with UCC256404 LLC controller, as suggested on the datasheet of the LLC controller…
Part Number: UCC28064A Hi Power Group,
PFC input stage is running well but looking for methods to lower the 3rd current harmonic.
Fundamental current is 3.0Amp and 3rd harmonic is 150mA. My criteria calls for a limit of 160mA.
While the circuit is passing…