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OB3330
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Part Number OB3330
Description 20W LED Driver Using Demo Board
Page 21 Pages


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20W LED Driver Using OB3330
LED48V0.4AOB3330.00
Subject
OB3330 Demo Board Manual
Board Model: LED48V0.4A-OB3330.00
Doc. No.: OB_DOC_DBM_A_333000
Key features:
Primary-side control with single stage PFC for LED driver
Minimum BOM component amount
Power factor >0.9
THD meet IEC61000-3-2 Class C
Short circuit protection
Meet EN55015 & FCC Part 15 EMI
Revision History
Revise Date Version Reason/Issue
2011-12-27 00
First issue
©On-Bright Electronics
Confidential
OB_DOC_DBM_A_333000
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20W LED Driver Using OB3330
LED48V0.4AOB3330.00
Contents Index
1. Adapter Module Specification ..................................................................................................... 4
1.1. Input Characteristics ....................................................................................................................... 4
1.2. Output Characteristics .................................................................................................................... 4
1.3. Performance Specifications ............................................................................................................ 4
1.4. Protection Features......................................................................................................................... 4
1.5. Environments .................................................................................................................................. 4
2.
2.1.
2.2.
2.3.
2.4.
2.4.1.
2.4.2.
2.5.
LED Module Information .............................................................................................................. 5
Schematic ....................................................................................................................................... 5
Bill of material.................................................................................................................................. 6
PCB Gerber File.............................................................................................................................. 7
LED Module Snapshot .................................................................................................................... 8
Transformer Specification ............................................................................................................... 8
Transformer Winding data............................................................................................................... 8
LED Module Snapshot .................................................................................................................... 9
3.
3.1.
3.1.1.
3.1.2.
3.1.3.
3.2.
3.2.1.
3.2.2.
3.2.3.
3.3.
3.3.1.
3.3.2.
Performance Evaluation............................................................................................................. 10
Input Characteristics ..................................................................................................................... 10
Input current .................................................................................................................................. 10
Efficiency....................................................................................................................................... 10
Power Factor & THD ..................................................................................................................... 10
Output Characteristics ...................................................................................................................11
Output Current Regulation .............................................................................................................11
Ripple & Noise ...............................................................................................................................11
Output Voltage & Current Waveform............................................................................................. 12
EMI Test ........................................................................................................................................ 14
Conducted EMI Test...................................................................................................................... 14
Radiation EMI Test ........................................................................................................................ 16
3.4Thermal Test...................................................................................................................................... 17
3.5. OVP ................................................................................................................................................... 17
3.6 Short Circuit Protection ................................................................................................................... 17
3.7 Other Important Waveform .............................................................................................................. 19
3.7.1 MOSFET Vds & Rectifier Vak @output start / normal / short .......................................................... 19
3.7.2 MOSFET Voltage and Current waveform ..................................................................................... 20
©On-Bright Electronics
Confidential
OB_DOC_DBM_A_333000
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20W LED Driver Using OB3330
LED48V0.4AOB3330.00
Figures Index
Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig.10
Fig.11
Fig.12
Fig.13
Fig.14
Fig.15
Fig.16
Fig.17
Fig.18
Fig.19
Fig.20
Fig.21
Fig.22
Fig.23
Fig.24
Fig.25
Ripple & noise waveform @90Vac/60Hz...................................................................................... 12
Ripple & noise waveform @115Vac/60Hz .................................................................................... 12
Ripple & noise waveform @230Vac/50Hz.................................................................................... 12
Ripple & noise waveform @264Vac/50Hz.................................................................................... 12
Voltage & current waveform @90Vac/60Hz, output start ............................................................. 12
Voltage & current waveform @90Vac/60Hz, normal .................................................................... 12
Voltage & current waveform @264Vac/50Hz, output start ........................................................... 13
Voltage & current waveform @264Vac/50Hz, normal .................................................................. 13
Vout & Vzcd waveform @90Vac/50Hz, output no-load ................................................................ 17
Vout & Vzcd waveform @264Vac/50Hz, output no-load .............................................................. 17
Vds & Vcs waveform @90Vac/60Hz, output short........................................................................ 18
Vds & Vcs waveform @90Vac/60Hz, spread ............................................................................... 18
Vds & Vcs waveform @264Vac/50Hz, output short ..................................................................... 18
Vds & Vcs waveform @264Vac/50Hz, spread ............................................................................. 18
Vds & Vak waveform @264 Vac/50Hz, output start ..................................................................... 19
Vds & Vak waveform @264 Vac/50Hz, output normal ................................................................. 19
Vds & Vak waveform @264 Vac/50Hz, output short .................................................................... 19
Vds&Vcs&Vcomp waveform @90Vac/60Hz, full load .................................................................. 20
Vds&Vcs&Vcomp waveform @90Vac/60Hz, spread.................................................................... 20
Vds&Vcs&Vcomp waveform @115Vac/60Hz, full load ................................................................ 20
Vds&Vcs&Vcomp waveform @115Vac/60Hz, spread .................................................................. 20
Vds&Vcs&Vcomp waveform @230Vac/50Hz, full load ................................................................ 20
Vds&Vcs&Vcomp waveform @230Vac/50Hz, spread.................................................................. 20
Vds&Vcs&Vcomp waveform @264Vac/50Hz, full load ................................................................ 21
Vds&Vcs&Vcomp waveform @264Vac/50Hz, spread.................................................................. 21
Tables Index
Table. 1 Input current under full load ....................................................................................................... 10
Table. 2 Efficiency .................................................................................................................................... 10
Table. 3 Power factor ............................................................................................................................... 10
Table. 4 THD test under full load ..............................................................................................................11
Table. 5 Line Regulation & Load Regulation ............................................................................................11
Table. 6 Output voltage, led current ripple & noise...................................................................................11
Table. 7 Thermal test result ..................................................................................................................... 17
Table. 8 Output voltage under no-load condition ..................................................................................... 17
Table. 9 Short protection & Input power................................................................................................... 17
Table.10 Vds_max, Vak_max @start/normall/output short ...................................................................... 19
©On-Bright Electronics
Confidential
OB_DOC_DBM_A_333000
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20W LED Driver Using OB3330
LED48V0.4AOB3330.00
1. Adapter Module Specification
1.1. Input Characteristics
AC input voltage rating
AC input voltage range
AC input frequency range
100Vac ~ 240Vac
90Vac ~ 264Vac
47Hz ~ 63Hz
1.2. Output Characteristics
Output Voltage
Output Current
48.0V
0.4A type
1.3. Performance Specifications
Output Power
Input Current
Efficiency
Line Regulation
Load Regulation
20W
0.3A max
> 84%
±2% max
±5% max
1.4. Protection Features
Short Circuit Protection
Output shut down with automatic recovery
Over Voltage Protection
Output shut down with automatic recovery
1.5. Environments
Operating Temperature
Operating Humidity
Storage Temperature
Storage Humidity
0to + 70
20% to 90% R.H.
- 40to + 85
0% to 95% R.H.
©On-Bright Electronics
Confidential
OB_DOC_DBM_A_333000
4



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