Universal AC input, Primary Side Regulation
AP3981B 12V-500mA EV2 Board User Guide
AP3981B EV2
Page 5 of 12
11 - 12 - 2019
Rev1.0
www.diodes.com
Input & Output Characteristics
Input Standby Power
Input Voltage
115Vac/60Hz
230Vac/50Hz
Note
Pin (w)
58.5W
69.2mW
At no loading
Figure 6:
The
Input Standby Power
with at different AC input
Input power Efficiency
at different loading
AC input
Efficiency (%)
Eff_avg at four
conditions
10%
25%
50%
75%
100%
90V
AC
/60Hz
115V
AC
/60Hz
74%
81.2%
81.04%
81.17%
81.07%
81.12%
230V
AC
/50Hz
67.6%
78.58%
80.95%
81.66%
82.19%
80.84%
264V
AC
/50Hz
Eff_avg
Figure 7:
The efficiency curve with different loading
Figure 8:
CV & CC Curve at OCP set points