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Silergy SY5802FAC 3 Manual

Single stage flyback and pfc controller with primary side control for led dimming
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1. Introduction
The SY5802 is a single stage Flyback and PFC controller targeting at LED dimming applications. It is a
primary side controller without applying any secondary feedback circuit for low cost, and drives the Flyback
converter in the quasi-resonant mode to achieve higher efficiency. It keeps the Flyback converter in constant
on time operation to achieve high power factor.
2. Application
Provide
9W~12W output power and high power factor. It is compatible with 7 kinds of operation mode: No dimming,
Variable Resistor (VR) dimming (primary/secondary), 0-10V dimming (primary/secondary), PWM signal dimming
(primary/secondary)
3. Design Specifications
Item
Input Voltage(V)
Output
Voltage (V)
Current(mA)
Power(W)
PF
(110Vac，full load)
(220Vac，full load)
Efficiency
（110Vac，full load）
（220Vac，full load）
condition
Working temperature
Dimming range
Standby Power
DB_SY5802FAC_3 Rev. 0.1
Evaluation Board SY5802FAC_3
Single Stage Flyback And PFC Controller
With Primary Side Control For LED Dimming
Min
Typical
90
100-240
30
36
300
10.8W
>0.90
0.99
0.95
>84%
86.7%
86.4%
-20℃
10%
0.33W
0.4W
Silergy Corp. Confidential- Prepared for Customer Use Only
Max
Note
264
44
75℃
100%
When dimming operation
0.5W
Vary with operation mode
1

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Summary of Contents for Silergy SY5802FAC 3

  • Page 1 0.95 Efficiency >84% （110Vac，full load） 86.7% （220Vac，full load） 86.4% condition Working temperature -20℃ 75℃ Dimming range 100% When dimming operation Standby Power 0.33W 0.4W 0.5W Vary with operation mode DB_SY5802FAC_3 Rev. 0.1 Silergy Corp. Confidential- Prepared for Customer Use Only...

  • Page 2: Application Guide

    Dimming ISEN ADIM Primary side Second side 1.5V x PWM Duty Dimming port Dimming port Dimming DIM2 DIM1 Dimming Optoisolator Dimming VCC2 VCC1 card card Fig.1 EVB structure circuit. DB_SY5802FAC_3 Rev. 0.1 Silergy Corp. Confidential- Prepared for Customer Use Only...
  • Page 3 Dimming TRIG port D1 D2 12V VCC CVOLT Fig.3 Variable Resistor (VR) Dimming card Schematic Diagram Dimming port LM393 Dimming 12V VCC signal Fig.4 0~10V Dimming card Schematic Diagram DB_SY5802FAC_3 Rev. 0.1 Silergy Corp. Confidential- Prepared for Customer Use Only...

  • Page 4: Pcb Layout

    DB_SY5802FAC_3 6. PCB Layout (a)Top layer (b) Top layer Silkscreen Fig.5 Main board top view DB_SY5802FAC_3 Rev. 0.1 Silergy Corp. Confidential- Prepared for Customer Use Only...
  • Page 5 DB_SY5802FAC_3 (a) Bottom layer (b) Bottom layer Silkscreen Fig.6 Main board bottom view (a) Top layer (b) Top layer Silkscreen Fig.7 0~10V Dimming Card top view DB_SY5802FAC_3 Rev. 0.1 Silergy Corp. Confidential- Prepared for Customer Use Only...
  • Page 6 Fig.8 0~10V Dimming Card bottom view (a) Top layer (b) Top layer Silkscreen Fig.9 Variable Resistor Dimming Card top view (a) Bottom layer (b) Bottom layer Silkscreen Fig.10 Variable Resistor Dimming Card bottom view DB_SY5802FAC_3 Rev. 0.1 Silergy Corp. Confidential- Prepared for Customer Use Only...
  • Page 7 10K/0603 2K/0805 10/0805 100/0805 500K/0603 5K/0603 5.1K/0805 200K/0603 0.33/1206 2K/0603 1K/0603 13.7K/0603 R4, R6 250K/1206 51k/0603 R7, R8 1M/1206 R14, R15 R9, R22 10/1206 PC817C SY5802 ZD1, ZD2 12V/LL34 DB_SY5802FAC_3 Rev. 0.1 Silergy Corp. Confidential- Prepared for Customer Use Only...
  • Page 8 C1608C0G1H221J by TDK Variable Resistor Dimming card bom list Reference Designator Description Note NE555 RES1 100K TYPE 09 100/0603 R3,R4 10K/0603 D1,D2 BAV21W SOD123 C2,C3 1nF/0603 C1608C0G1H102J by TDK DB_SY5802FAC_3 Rev. 0.1 Silergy Corp. Confidential- Prepared for Customer Use Only...
  • Page 9 Bottom overview (EFD20 core with air gap) PTFE tube Insulating Tape Winding Wire diameter*Number Notes 9.5mm(TS) Ø0.25*1(2UEW) Close wound Ø0.15*1(2UEW) Close wound Ø0.35*1(TEX-E) Close wound Ø0.25*1(2UEW) Close wound Ø0.19*1(2UEW) Close wound DB_SY5802FAC_3 Rev. 0.1 Silergy Corp. Confidential- Prepared for Customer Use Only...
  • Page 10 Primary side Dimming Port + 0~10V Dimming card = Primary side 0~10V Dimming Secondary side Dimming Port + 0~10V Dimming card = Secondary side 0~10V Dimming 5. Turn on the input supply and measure the LED Current. DB_SY5802FAC_3 Rev. 0.1 Silergy Corp. Confidential- Prepared for Customer Use Only...
  • Page 11 10.3 Start Up & Shut Down – No dimming Startup Shutdown =110V , Full Load) =110V , Full Load) (AC) (AC) 0.2A/div 0.2A/div 20V/div 20V/div 100V/div Drain 100V/div 100V/div Drain Drain 100V/div Drain Time (20ms/div) Time (20ms/div) DB_SY5802FAC_3 Rev. 0.1 Silergy Corp. Confidential- Prepared for Customer Use Only...
  • Page 12 10.5 Short Circuit Protection – No dimming Short Circuit Protection Short Circuit Protection =110V =220V (AC) (AC) 20V/div 20V/div 1A/div 1A/div 100V/div Drain 100V/div Drain Time (20ms/div) Time (20ms/div) DB_SY5802FAC_3 Rev. 0.1 Silergy Corp. Confidential- Prepared for Customer Use Only...

  • Page 13: Line Transient

    DB_SY5802FAC_3 10.6 Line Transient – No dimming Line Transient Line Transient =85V-132V) =132V-85V) 0.1A/div 0.1A/div Time (20ms/div) Time (20ms/div) DB_SY5802FAC_3 Rev. 0.1 Silergy Corp. Confidential- Prepared for Customer Use Only...
  • Page 14 Second Side 0-10V Dimming 100% Output Second Side 0-10V Dimming 75% Output Second Side 0-10V Dimming 50% Output Second Side 0-10V Dimming 25% Output Input Voltage (V 10.9 Line Regulation 10.10 Power Factor DB_SY5802FAC_3 Rev. 0.1 Silergy Corp. Confidential- Prepared for Customer Use Only...
  • Page 15 DB_SY5802FAC_3 10.11 Dimming Power Factor 10.12 Second side Variable Resistor Dimming curve DB_SY5802FAC_3 Rev. 0.1 Silergy Corp. Confidential- Prepared for Customer Use Only...
  • Page 16 DB_SY5802FAC_3 10.13 Primary side Variable Resistor Dimming curve 10.14 Second side 0~10V Dimming curve 10.15 Primary side 0~10V Dimming curve DB_SY5802FAC_3 Rev. 0.1 Silergy Corp. Confidential- Prepared for Customer Use Only...