OB2263 Application Note

15W Adapter Module Design

with OB2263
(Preliminary Release)

Key Features

ƒ Low component count

ƒ Standby Power ＜ 0.2W

ƒ Audio noise free operation

ƒ OCP with line compensation

Version Date Revision History

v.1.0 2005-6-23 Preliminary Release

© On-Bright Electronics Confidential

OB_DOC_AN_2263A1
-1-
 OB2263 Application Note

Index

1 Adaptor Module Specification ..................................................................................................................... 3

1.1 Input Characteristic .......................................................................................................................... 3
1.2 Output Characteristic........................................................................................................................ 3
1.3 Performance Spec............................................................................................................................. 4
1.4 Protection Features ........................................................................................................................... 4
1.5 Environmental .................................................................................................................................. 4
1.6 Dielectric withstand (Hi-pot) test ..................................................................................................... 4
1.7 Insulation.......................................................................................................................................... 4
2 Adaptor Module Information ....................................................................................................................... 5
2.1 Schematic ......................................................................................................................................... 5
2.2 PCB Garber File ............................................................................................................................... 7
2.3 BOM................................................................................................................................................. 8
3 Performance Evaluation ............................................................................................................................. 10
3.1 Input Characteristics........................................................................................................................11
3.2 Output Characteristics .....................................................................................................................11
3.3 Protections...................................................................................................................................... 23
3.4 Brownout/Brownout recovery test ................................................................................................. 24
3.5 EMI Test ......................................................................................................................................... 25
3.5.1 Conducted EMI Test................................................................................................................... 26
3.5.2 Radiation EMI Test..................................................................................................................... 34

Figures

Figure 1 Measured ripple& noise waveform@90Vac/60HZ, no load. ....................................................... 12

Figure 2 Measured ripple& noise waveform@90Vac/60HZ, full load. ..................................................... 13
Figure 3 Measured ripple& noise waveform@264Vac/50HZ, no load ...................................................... 14
Figure 4 Measured ripple& noise waveform@264Vac/50HZ, full load .................................................... 15
Figure 5 Measured overshoot waveform@90Vac/60HZ, full load............................................................. 16
Figure 6 Measured overshoot waveform@264Vac/50HZ, full load........................................................... 16
Figure 7 Output voltage waveform of under Dynamic test@264Vac/50HZ,full load................................ 17
Figure 8 Output voltage waveform under Dynamic test@90Vac/60HZ,full load ...................................... 18
Figure 9 Turn on delay time measured waveform@90Vac/60HZ,full load................................................ 19
Figure 10 Turn on delay time measured waveform@240Vac/50HZ,full load............................................ 20
Figure 11 Hold on delay time measured waveform@100Vac/60HZ,full load ........................................... 21
Figure 12 Rise time measured waveform@100Vac/60HZ,full load........................................................... 21
Figure 13. Rise time measured waveform@240Vac/50HZ with full load ................................................. 22
Figure 14 Fall time measured waveform@100Vac/60HZ,full load ........................................................... 22

© On-Bright Electronics Confidential

OB_DOC_AN_2263A1
-2-
 OB2263 Application Note

Figure 15 Fall time measured waveform@240Vac/50HZ,full load ........................................................... 23

Tables
Table 1 Input characteristic at full load .......................................................................................................11
Table 2 Standby power at no load ...............................................................................................................11
Table 3 Standby power at no load with output LED ...................................................................................11
Table 4 Line Regulation & Load Regulation...............................................................................................11
Table 5 Ripple &Noise measurement results ............................................................................................. 12
Table 6 Over shoot/under shoot measurement results ................................................................................ 15
Table 7 output voltage under dynamic test................................................................................................. 17
Table 8 turn-on delay /hold-up/Rise/Fall time measurement results .......................................................... 18
Table 9 OCP value vs. input voltage .......................................................................................................... 23
Table 10 Brownout/Brownout recovery test results ................................................................................... 24

1 Adaptor Module Specification

Model Num: OBPD15W-L120A Rev. A0

1.1 Input Characteristic

ƒ AC input voltage rating 100VAC to 240VAC
ƒ AC input voltage range 90VAC to 264VAC
ƒ AC input frequency 47HZ to 63HZ
ƒ Max. In-rush current 30 A for 100VAC/50HZ at full load
(At cold Start ) 75 A for 240VAC/50HZ at full load

ƒ Input Current 0.45A (rms) max. @ full load, 100VAC/60HZ

0.23A (rms) max. @ full load, 240VAC/50HZ

ƒ Leakage Current 0.25mA Max.

1.2 Output Characteristic

ƒ Output Voltage +12.0V
ƒ Output Tolerance +/-0.6V
ƒ Min. load current 0A
ƒ Max. load current 1.25A
© On-Bright Electronics Confidential
OB_DOC_AN_2263A1
-3-
 OB2263 Application Note

ƒ Line Regulation 1%
ƒ Load Regulation 5%
ƒ Ripple & Noise 50 mV

Note: Ripple & Noise is measured with 20MHZ bandwidth limited (peak to peak value) at the end of a
12-inch twisted wire terminated with a 10uF capacitor in parallel with a 0.1uF ceramic
capacitor.

1.3 Performance Spec

ƒ Total Output Power 15W Typical
ƒ Standby Power < 0.3W @ 240Vac/50HZ, no load.

ƒ Efficiency 75％ min. @ 90Vac/60HZ with full load

ƒ Hold up Time 10m sec. min. @ 100Vac/60HZ with full load

ƒ Turn on Delay Time 1 sec. max. @ 100Vac/60HZ with full load
ƒ Switching frequency 20K HZ~100K HZ Free-Running.

1.4 Protection Features

ƒ Short circuit Protection Output shut down (Auto recovery)
ƒ Over Voltage Protection Output shut down when output voltage exceeds 15V
ƒ Over Current Protection Output shut down (Auto restart)

1.5 Environmental
ƒ Operating Temperature 0℃ to + 40℃
ƒ Operating Humidity 20 % to 90 % R. H.
ƒ Storage Temperature -40 ℃ to 85 ℃
ƒ Storage Humidity 0 % to + 90 % R. H.

1.6 Dielectric withstand (Hi-pot) test

ƒ Input to Output 3000Vac 1 min.

1.7 Insulation
ƒ Input to Output DC 500V 10M ohm min.

© On-Bright Electronics Confidential

OB_DOC_AN_2263A1
-4-