Dual Output Off-Line Non-isolated Flyback Power Solution
AP3917B 12V/20mA+3.8V20mA EV3 Board User
’s Guide
AP3917B EV3 Page 8 of 17 06-21-2019
Rev 1.0 www.diodes.com
Fig. 5-2, Full load efficiency VS Vin
5.1.3 Line Regulation
The line regulation data was tested after 10min burning. The voltage data was tested at the PCB terminal. All the data was
tested at room temperature. 3.8V and 12V full load, Vin ranges from 85V to 264V.
Table 5-3, line and load regulation data
Vin
Vo1 output(V)
Vo2 output
（
V
）
Vin
Vo1(V)
Vo2(V)
85V/60Hz
3.752
12.291
115V/60Hz
3.746
12.280
150V/60Hz
3.749
12.282
180V/50Hz
3.748
12.280
200V/50Hz
3.748
12.280
230V/50Hz
3.746
12.280
265V/50Hz
3.746
12.278
Fig 5-3, 3.8V and 12V full load, output voltage versus input voltag
60.00%
64.00%
68.00%
72.00%
76.00%
80.00%
80
100 120 140 160 180 200 220 240 260 280
E
ff
ici
ency
Vin(V)
Full load efficiency VS Vin
0
2
4
6
8
10
12
14
80 100 120 140 160 180 200 220 240 260 280
Ou
tp
u
t
Vo
ltage(V)
Vin(V)
Full Load Output Voltage VS Vin
3.8V
12V