Diodes AP3981B, User Manual, Page: 6 / 12

Universal AC input, Primary Side Regulation
AP3981B 12V-500mA EV2 Board User Guide
AP3981B EV2 Page 6 of 12 11 - 12 - 2019
Rev1.0 www.diodes.com
OCP Current set point with at different AC line
AC input 90VAC 115VAC 230VAC 264VAC Note
I _max 0.641A 0.638A 0.645A 0.641A
PSU Output Characteristics:
Line Regulation (at full loading condition):
AC input Voltage 90V
AC
/60Hz 115V
AC
/60Hz 230V
AC
/50Hz 265V
AC
/50Hz Note
12.00Vo 12.09V/0.5A 12.127V/0.5A 12.177V/0.5A 12.183V/0.5A 0.4%<1%
Cross Load Regulation (at nominal line AC input voltage):
AC input Voltage 115V
AC
/60Hz 230V
AC
/50Hz
12V Full Load 12.127V /0.5A 12.177V/0.5A
12V 10% of FL 11.818V /0.05A 11.825V/0.05A
Note: cable compensation 1.2% 1.4%
Note: All output voltages are measured at output PCB board Edge.
Internal Cable Compensation
8%
Key Performance Waveforms:
System start - up time
Figure 9: AP3981C turn on time 2.07sFL at 90Vac