Texas Instruments UCC28782EVM-030, User Manual

Page: 22 / 33

Figure 8-32. USB-PD Current Limit vs. Input
Voltage
Figure 8-33. USB-C PD Over Current Limit Retry
and Resume (Yellow = V
OUT
, Green = Transformer
Primary Current, 0.2 V/A)
8.16 Load Transient Response
Figure 8-34 to Figure 8-37 show output voltage V
OUT
deviation when load current step change is between 0 and
100%, at 100-Hz rate.
Blue = V
OUT
, Green = Load Current.
Figure 8-34. Load Transient Response at V
OUT
= 20
V Overshoot / Undershoot = 357 mV / -619 mV
Figure 8-35. Transient Response at V
OUT
= 15 V
Overshoot / Undershoot = 366 mV / -562 mV
Figure 8-36. Transient Response at V
OUT
= 9 V
Overshoot / Undershoot = 326 mV / -426 mV
Figure 8-37. Transient Response at V
OUT
= 5 V
Overshoot / Undershoot = 326 mV / -426 mV
Performance Data and Typical Characteristic Curves www.ti.com
22 Using the UCC28782EVM-030 65-W USB-C PD High-Density Active-Clamp
Flyback Converter SLUUBZ3B – MAY 2020 – REVISED AUGUST 2020
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