Dual Output Off-Line Non-isolated Flyback Power Solution
AP3917B 12V/20mA+3.8V20mA EV3 Board User
’s Guide
AP3917B EV3 Page 13 of 17 06-21-2019
Rev 1.0 www.diodes.com
CH3:12V output; CH2:3.8V output
Fig.5-17 dynamic [email protected] 0~20mA,12V FL, @85V/60Hz
Fig. 5-18 dynamic [email protected] 0~20mA,12V FL, @265V/50Hz
Fig.5-19, dynamic response@12V 0~20mA,3.8V FL, @85V/60Hz
Fig. 5-20, dynamic response@12V 0~20mA,3.8V FL, @265V/50Hz
5.3 Protection (SCP) test
The SCP test was measured under the condition of output cable terminal short circuit.
Table 5-9, the short circuit protection test
Condition
Vin
Vo1 max(V)
Vo2 max(V)
Figures
12V terminal output short
85V/60Hz
0.416
0.508
Fig. 31
115V/60Hz
0.425
0.512
-
230V/50Hz
0.463
0.503
-
264V/50Hz
0.480
0.508
Fig. 32
3.8V terminal output short
85V/60Hz
0.544
2.81
Fig. 33
115V/60Hz
0.562
2.90
-
230V/50Hz
0.588
3.05
-
264V/50Hz
0.608
3.07
Fig. 34
CH2:3.8V output; CH3:12V output