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• FAN7710/1 Presentation - Demo-board Circuit -
  Test Result - Application Notes

Lighting Product LinePower Conversion
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Ballast Standard
IEC (International Electrotechnical commission)

• ? Starting Mode
• ? IEC929 1990 / 1st edition
• AC supplied electronic ballasts for tubular
  fluorescent lamps-Performance requirements
• ? 7. Preheat starting mode ? Need a IC for
  frequency control
• 7.1. minimum preheat time 0.4S
• maximum effective heating current
  not exceed lamp datasheet limit
• maximum open-circuit voltage not
  exceed lamp datasheet limit
• ? Protection Mode
• ? IEC61347-2-3 2000
• Particular requirements for ac supplied
  electronic ballasts for fluorescent lamps
• ? 16. Abnormal conditions ? FAN7710/1 cover
  without external components
• a) the lamps or one of the lamps is not
  inserted.
• b) the lamp doesn't start
  because one of the cathodes is broken
• c) the lamp doesnt
  start although the cathode circuits are intact
  (de-activated lamp)
• d) the lamp operates,
  but one of the cathodes is de-activated or broken
• e) short circuit of the
  starter switch, if any
• ? 17. Behavior of the ballast at end of life ?
  FAN7713 will cover
• ? Mandatory claim for T4/T5 Lamp
• a) asymmetric pulse test, b)
  asymmetric power dissipation test, c) open
  filament test

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FAN7710/1 Configuration
High-Side Gate Driver dv/dt noise cancelleration
circuit UVLO output buffer can prevent
shoot-through
Running frequency control using a resistor
Preheating/Ignition time control And Dead-time
control loop stabilizer Using a capacitor
Adaptive ZVS controller And Open Lamp
Detection Without any external devices
FAN7710 Only 550V power MOSFETs (drive up to 20W
lamp)
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FAN7710 Demo-board Circuit for CFL
Test Load - 20W CFL (Kumho Lighting)
Part Number Value Note Manufacture
D1,D2,D3,D4 600V,1A 1N4005 Fairchild
DC1,DC2,DB 600V,1A UF4005 Fairchild
Rst 650k 1/4W
RT 91k,1 1/4W
R5 100 1/4W
C1 47uF,250V Electricity
C2 47uF,50V Electricity
CPH 680nF,25V Miller-Cap
CBS 100nF,630V Miller-Cap
C3 220pF,630V Miller-Cap
CS 33nF,630V Miller-Cap
Cp 3.3nF,1000V Miller-Cap
LS 2.5mH EE1616S
U1 FAN7710 Fairchild
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FAN7710 Control Parameter Test Result
Time by CPH (Preheating Capacitor)
Frequency by RT (Timing Register)
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FAN7711 Demo-board Circuit for CFL
Part Number Value Note Manufacture
D1,D2,D3,D4 600V,1A 1N4005 Fairchild
DC1,DC2,DB 600V,1A UF4005 Fairchild
Rst 650k 1/4W
RT 91k,1 1/4W
R5 100 1/4W
C1 47uF,250V Electricity
C2 47uF,50V Electricity
CPH 680nF,25V Miller-Cap
CBS 100nF,630V Miller-Cap
C3 220pF,630V Miller-Cap
CS 33nF,630V Miller-Cap
CP 3.3nF,1000V Miller-Cap
LS 2.5mH EE1616S
M1,M2 FQU1N50C
RG1,RG2 39
U1 FAN7710 Fairchild
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FAN7711 Application Circuit for LFL
For 32W 2lamps
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Comparison Table
FAN7532 L6574 IR2156 FAN7710 FAN7711 IR2520D UBA2014 UBA2024
Programmable Preheat Time O O O O O O O O
Programmable Preheat Frequency O O O O O O O O
Programmable Run Frequency O O O O O O O O
Protection (OLP, OVP) O O O Automatic Automatic X O X
Dimmable OP Amp X O X X X X X X
Operating Frequency 50KHz (-4) X Rt,Ct Var. 60KHz (-3) X Rt,Ct Var. 100KHz (-6) X Rt,Ct Var. 50KHz (-6) X Rt Var. 50KHz (-6) X Rt Var. 34KHz (-12.35) X Rt Var. 40.5KHz (-4) X Rt, Ct Var. 40KHz(-3.3) X Rt,Ct Var.
Internal Boot Strap Diode X O X X X O O O
Internal H/B Switchs X X X O X X X O
Start-up current (Max) 120uA 250uA(Max) 120uA 91.8uA 91.8uA 80uA 170uA 390uA
Operating Temperature -40C 125C -25C 125C -25C 125C -25C 125C -25C 125C -25C 125C -25C 80C -25C 125C
Output Current (Sink/Source) 250/500mA 250/450mA 500/500mA 800mA (Isat.(Switch)) 350/650mA 140/230mA 180/330mA 900mA (Isat.(Switch))
Lamp Power Over 120W Over 120W Over 120W Up to 20W Over 120W Over 120W Over 120W Up to 11W
Package 16SOP 16SOP/DIP 14SOP/DIP 8DIP 8SOP/DIP 8SOP/DIP 16SOP/DIP 8DIP/14SOP