OB2538 Demo Board Manual_中山五丰_110704
O c
o
n
f
i
d
e
n
O
O
O
O a
l
t
o
中
山
五
丰
O
O
-B r
i g h
t c
o n f i d
e 山
五
丰
Winging Start Remark
N1 0.21N2 0.21TAPE TAPE W=12mm (Y)
2 N
3 Copper 12mm 3 1.1
TAPE TAPE W=12mm (Y) 4 N4 0.50 Φ*1 triple insulated wire 16 TAPE TAPE W=12mm (Y) 2 N5 0.20*3 2UEW
TAPE TAPE W=12mm (Y) N6 0.18*3 2UEW
19 TAPE
TAPE W=12mm (Y)
3
O
-
B r
i g h
t c
o n f i d
e n
t i a
O
264Vac/50HZ 146
11.860
Fig. 1 No-load Input Power vs. Input Line Voltage
3.1.2. Efficiency
25% 50% 75% 100% Aver. Eff. 115Vac/60HZ 79.88 80.74 80.49 79.60 80.17230Vac/50HZ 78.32
80.50 80.72 80.40
79.98Fig. 2 Efficiency vs. Percent of Rated Output Power
O
t c
o n f i d
e n
t i a l t
o
中
山
Fig. 3 Measured ripple& noise waveform@90Vac/60HZ, no load
Fig. 4 Measured ripple& noise waveform@90Vac/60HZ, full load
O
n -
B r
i g h
t c
o n f i d
Fig. 5 Measured ripple& noise waveform@264Vac/50HZ, no load Fig. 6 Measured ripple& noise waveform@264Vac/50HZ, full load
3.2.3. Over Shoot & Under Shoot
Over shoot and under shoot were measured under below conditions. a. AC input switch on for over shoot and off for under shoot. b. Input voltage ranges from 90Vac/60HZ~264Vac/50HZ. Table. 5 Over shoot & under shoot measurement results
Input load
Remark over shoot Fig. 7 Full load
Fig. 8 Measured overshoot waveform@90Vac/60HZ, no load
O
n -
B r
i g h
t n
t i a l t
o
中
山
五
丰
Fig. 10 Measured overshoot waveform@264Vac/50HZ, no
load
A dynamic loading with low set at 20% load lasting for 50ms and high set at 80% load lasting for 50mS is
O r
i
g
h
t
c
o
n
f
i
d
o
中
山
五
丰
Fig. 13 Turn on delay time measured waveform @100Vac/60HZ,full load
Fig. 14 Turn on delay time measured waveform @240Vac/50HZ,full load
Fig. 15 Hold-up time measured waveform@100Vac/60HZ,full load
Fig. 16 Rise time measured waveform@100Vac/60HZ,full load
O
n -
B r
i g h
t c
o n f i d
e n
t i a l t
o
中
Fig. 19 Fall time measured waveform@240Vac/50HZ,full load
O r
i
g
h
t
c
o
n
f
i
d
e
n
t
中
山
五
丰
O
n -
B r
i g h
t c
o n f i d
e n
t i a l t
o
中
山
五
O
B r
i g h
t c
o n f i d
e n
t i a l t
o
中
山
五
丰
3.3.2.2. FCC CLASS B @ full load report
O
n -
B r
i g h
t c
o n f i d
e n
t i a l t
o
中
山
五
丰
removed.
Fig. 20 Output short, Vdd 、Cs 、Vds waveform@90 Vac/60Hz, full load Fig. 21 Output short, Vdd 、Cs 、Vdd waveform@264 Vac/50Hz, full load
4.3. Open Loop Protection
Table. 9 OLP @ Full load
Input OLP Protection
115Vac/60Hz OK 230Vac/50Hz OK
4.4. Over Current Protection
Table. 10 Over current Protection
Input OCP Current OCP Recovery O
t c
o n f i d
e n
t i a l t
o
中
山
O a
l
t
o
中
山
五
丰