Part Number: UCC28782 Hello:
We have a 65W USB-C PD ACF with UCC28782ADRTWR ac-dc circuit finally fully operational up to 65W output.
Our intention is to productize it for USBC PD AND a versatile charger.
The base design with UCC28782 shows a WT6636F…
Part Number: UCC28782 Tool/software: Hello,
I am considering a UCC28782 device. I would like to ask you about the RRDM setting range. I am adjusting PWMH by changing the RRDM constant, but I am experiencing the following situation. When RRDM is over…
Part Number: UCC28782 Tool/software: Hello,
I would like to ask you a question regarding the burst mode operation of the UCC28782. (Question 1) When transitioning from LPM to ABM, excessive voltage is applied to the SR_FET Vds. Please see the enlarged…
Part Number: UCC28782 Tool/software: Hello,
I would like to ask you about the behavior of UCC28782 when Vsw drops. The attached figure shows the waveform when Vsw (Vds) drops. When the low-side turns on, Vsw rises again. The part circled in red. I would…
Part Number: UCC28782 Other Parts Discussed in Thread: TL103W , , TPS92074 , TPS65987 , TPS55288 Hello:
In a separate application, we need to have our UCC28782-based module behave as a "current-controlled" source. Such that its output voltage will change…
Part Number: UCC28782 Other Parts Discussed in Thread: LMG2610 , , LMG5200 , LM76005 Hello:
ds for LMG2610 states that the part is meant for a[[lications <75W
Yet, nowhere can one notice where that limit comes from.
Surely, one place would be the…
Part Number: UCC28782 Hello,
I would like to ask you about the LPM behavior of UCC28782. During actual machine verification, switching operation may stop when transitioning from LPM to ABM. Therefore, we are measuring the waveform, but in LPM, the on…
Part Number: UCC28782 Hello,
The active clamp circuit of UCC28782 is disabled during LPM, SPB1, and SPB2 operation. Therefore, I am considering adding an RCD snubber circuit as a countermeasure against ringing during LPM, SPB1, and SPB2 operation. I…
Part Number: UCC28782 Hello,
I previously asked about LPM behavior in the thread below. Later, during the investigation, it was discovered that the oscilloscope probe was causing the problem. When measuring between SW and GND with a passive voltage…
Part Number: UCC28782 Hello,
I am currently creating a board using UCC28782 and checking its operation. However, there is a problem that prevents it from starting up properly. Attach the waveform. It switches for the first few cycles, but then stops…
