Subject
OB3341S Demo Board Manual
Board Model:LD60V0.2A3341.00 Doc. No.: OB_DOC_A_DBM_3341S01Key features:
Single stage buck PFC structure, integrated 600V MOSFET
Fixed on time and QR mode to achieve high PF(>0.9)
High efficiency(>90%) application
High precision constant output current(<±3%)
Lowest possible component counts
Lower output short power lose(<1W@264Vac input)
LED open/short protection, Over temperature protection.
Revision History
15mm
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芯瑞达1. Board Information
1.1. Board Schematic
1.2. Bill of Materials
Description Position QTY
Resistor
200k / 5% / 1206 R1,R2 2
33k / 1% / 0805 R3 1
6.2k / 1% / 0805 R4 1
1R / 1% / 1206 R6 1
100R / 1% / 1206 R7 1
100k / 5% / 1206 R8 1
10k / 5% / 0805 R12 1
10R / 5% / 0805 R15 1
Capacitor
154 / 400V / MPP C1 1
6.8uF / 50V / E.C C2 1
1uF / 50V / 0805 C3 1
100uF / 100V / E.C C4,C6 2
Others
Inductance / LD-G Φ8*10
2.7mH / Φ0.18mm*275Ts L3 1
EPC13 5+5 L3-A, L3-B 1
T1.25A / 250V F1 1
471KD10 MOV1 1
HD06 B1 1
ES2J D2 1
RS1J D1 1
OB3341S U1 1
TOTAL 22
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芯瑞达1.3. Manufacture Inductance: L3-A, L3-B, L3
Bobbin: EPC-13 5+5
Pin No. Wire diameter Turns Inductance Core
L3-A Pin 6→Pin 1 Φ0.21mm 197 Ts 0.9mH±5%
L3-B Pin 9→Pin 10 Φ0.08 60 Ts 83uH
EPC-13 PC44 Note: 2 layers tape should be placed when L3-A and L3-B winding finished.
Pin No. Wire diameter Turns Inductance Core
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芯瑞达1.4. PCB Gerber File
Top silkscreen
Top
Bottom
1.5. Module Snapshot
Size: 137mm(L) * 15mm(W) * 12mm(H)
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芯瑞达2. Converter Specification
2.1. Input Characteristics
AC input voltage range 90Vac ~264Vac
AC input frequency range 47Hz ~ 63Hz
2.2. Output Characteristics
Output voltage (Typical) 55VDC~65VDC
Output current (Typical) 200mA
2.3. Performance Function
PF >0.9
CC precision ±3% Max
Efficiency >90%
Line regulation ±3% Max
Load regulation ±3% Max
2.4. Protection Function
LED short protection Output shut down with automatic recovery
LED open protection Output voltage less than output cap absolute voltage
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芯瑞达3. Performance Evaluation
This session presents the test results of 12W non-isolated LED module up to date. The module meets design specifications. All data was measured at PCB end.
Test Equipments
Item Vender Module
AC Source WEST WEW1010
Digital Power Meter YOKOGAWA WT210
Electrical Load ITECH IT8511
Oscilloscope LeCroy WS424
Multimeter Fluke Fluke 45
3.1. Input Characteristics
3.1.1 Efficiency
Table. 1 Efficiency
90Vac/60Hz 115Vac/60Hz 230Vac/50Hz 264Vac/50Hz
CV=55V 90.7% 91.6% 91.1% 90.4%
CV=60V 90.4% 91.8% 91.4% 91.0%
CV=65V 90.3% 91.9% 91.7% 91.3%
efficiency--Vin(ac)
80.0%
82.5%
85.0%
87.5%
90.0%
92.5%
95.0%
97.5%
100.0%
90V 115V 230V 264V
Vout=55V Vout=60V Vout=65V
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芯瑞达3.1.2 Power factor at full load
Table. 2 Power factor
90Vac/60Hz 115Vac/60Hz 230Vac/50Hz 264Vac/50Hz Spec.
CV=55V 0.966 0.980 0.948 0.926 CV=60V 0.952 0.975 0.954 0.933 CV=65V 0.935 0.940 0.968 0.959
>0.9
PF--Vin(ac)
0.600 0.650 0.700 0.750 0.800 0.850 0.900 0.950 1.000
90V 115V 230V 264V
Vout=55V Vout=60V Vout=65V
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芯瑞达3.2. Output Characteristics
Table. 3 Line regulation & Load regulation
Iout (mA) 90Vac 115Vac 230Vac 264Vac Line CC Spec
CV=55V 200.4 196.9 197.6 198.0 198.2 ± 0.9%
CV=60V 201.9 197.5 196.9 197.6 198.5 ± 1.3%
CV=65V 205.2 198.4 196.5 197.1 199.3 ± 2.2%
Load CC 202.5 ± 2.4%
<±3%
Iout(mA)-Vin
100.0 120.0 140.0 160.0 180.0 200.0 220.0 240.0 260.0 280.0 300.0
90V 115V 230V 264V
Iout(mA)-Vout
100.0 120.0 140.0 160.0 180.0 200.0 220.0 240.0 260.0 280.0 300.0
55V 60V 65V
3.3. Thermal Test
The thermal test is under 30℃ ambiance after 2hour full load running with 90Vac & 264Vac input.
Thermal @90Vac, 65Vout Thermal @264Vac, 65Vout
Table. 4 Thermal test
90Vac 264Vac
IC 74.9° 56.8°
Inductance 61.4° 68.4°
D2 56.7° 56.2°
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芯瑞达4. Protection Data
Table. 5 MOSFET & wheel Diode max voltage
Input VDS-MAX(V) VD2-MAX(V)
264Vac @ Normal 390V 390V
264Vac @ Start 387V 390V
264Vac @ Output short 387V 384V
Table. 6 Output voltage @output open
Input 90Vac 115Vac 230Vac 264Vac
Vout(V) 76.5 76.5 76.7 76.9
Table. 7 Input power @output short
Input 90Vac 115Vac 230Vac 264Vac
Pin(mW) 434 563.1 614 796.5
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芯瑞达5. Operating Waveform
Start state at 230Vac Start state at 230Vac
CH1: ZCD CH2: CS CH1: CH2:
CH3: CH4: Vcc CH3: Vout CH4: Iout
Steady state at 230Vac Steady state at 230Vac
CH1: ZCD CH2: CS CH1: ZCD CH2: CS
CH3: Vbus CH4: Vcc CH3: Vbus CH4: Vcc
Steady state at 264Vac Steady state at 264Vac
CH1: Vds CH2: CH1: Vds CH2:
CH3: VD2 CH4: CH3: VD2 CH4:
Zoom in
Zoom in
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芯瑞达MOSFET VDS and VD2@ 264Vac Start MOSFET VDS and VD2@ 264Vac output short
CH1: Vds CH2: CH1: Vds CH2:
CH3: VD2 CH4: CH3: VD2 CH4:
OVP @ 264Vac Open LED
CH1: ZCD CH2:
CH3: Vout CH4:
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芯瑞达Disclaimer
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This document is under copy right protection. Non of any part of document could be reproduced, modified without prior written approval from On-Bright Electronics.
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芯瑞达