HT7L5600 E27/8W 8S, 266.5mA LED Bulb

HT7L5600 E27/8W 8S, 266.5mA LED Bulb D/N：HA0395E

Features The switching power of this device is designed for E27 LED bulb applications. Its special features are summarised below:

• Wide AC input voltage range • System architecture is isolation Flyback topology • High efficiency, high power factor and low THD • High constant current accuracy and good load regulation • Full range of protection features such as LED open load protection, short circuit protection and internal over temperature protection

• Simple system architecture design

Typical System Characteristics 8 LED series, 266.5mA / 8W @ Open Frame Description Input AC Frequency Output Voltage (VLED+) Output Current (IOUT) Output Current Ripple Ta = 25°C Linear Regulation Ta = -20°C ~ 65°C Load Regulation Efficiency Power Factor THD Standby Power Consumption Output Short Circuit Power Consumption Output Short Circuit Protection Output Open Circuit Protection EMI

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Wide Range (90VAC~265VAC) 47Hz~63Hz 21.3VDC~27.7VDC 266.5mA(Typ.) 290mA(Max.) ±0.6% ±2.5% ±2% @ 115VAC, ±2.5% @ 220VAC >82% @ 115VAC, >0.81% @ 220VAC >0.95 @ 115VAC, >0.85 @ 220VAC ≦15% VZCD = (VLED + +VD 4) * ( N 3 / N 2 ) − VD 2 ) *

R9 R8 + R9

CS The output current can be easily set by using external resistors (R11//R12). The formula is:

VFB N 1 I LEDOUT ≈ 0.86 × × × P 2 R11 // R12 N S While NP: Transformer primary winding turns NS: Transformer secondary winding turns VFB = 0.3(constant value) Using the parameters for the specification requirements in the formula: NP=150 NS=40 VFB=0.3 R11//R12=1.8 So ILEDOUT=268.75mA HA0395E V110

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HT7L5600 E27/8W 8S, 266.5mA LED Bulb The actual system parameters will vary, so there will be a tolerance between the actual output current and the calculated current value. For a more accurate output current the resistance precision error must be less than 1% and the related PCB lines should be as short as possible. COMP There is an external capacitor (C6) connected to ground whose purpose is to stabilise the internal reference signal. The suggested capacitor value is 0.47µF.

Transformer Design The tranformer T1 specification is shown in the following diagram. Transformer EE16 SPEC

T+

1

21 0.15mm X60Ts

Triple Insulated wire 97 0.35mm X 40Ts

2 32 0.15mm X 90Ts

3 4

T-

45

0.13mm x 30Ts

1 2

0.15mm x 15Ts

T- 

Tape 2Ts Tape 1Ts

0.15mm x 45Ts

Tape 2Ts

0.35mm x 13Ts 0.35mm x 13Ts

45 0.13mm X 30Ts

0.35mm x 14Ts

5 Need Gap: 3pin - 1pin Lp=1.4mH 1KHz/ 1V

2

0.15mm x 45Ts

3

0.15mm x 45Ts

 T+

Tape 2Ts

Experimental Results Test Condition: with EMI solution. AC input voltage range: 90VAC~265VAC. LED load: 8S&2P; Total input power: 8W. VAC 90 100 115 135 180 220 240 265 VAC 115 220

Pin(W) 7.945 7.881 7.8218 7.78 7.816 7.897 7.9545 8.03

VLED+(VDC) 24.24 24.23 24.22 24.22 24.2 24.2 24.2 24.2

Iout(mA) 268 267 266 265 265 265 265 266

POUT(W) 6.50 6.47 6.44 6.42 6.41 6.41 6.41 6.44

LED load series LED Current (mA) PF. LED Current(mA) PF.

7 271 0.9849 270 0.9016

8 266 0.9863 265 0.9146

Efficiency(%) 81.77 82.09 82.37 82.50 82.05 81.21 80.62 80.16

PF 0.993 0.99 0.9863 0.9777 0.9538 0.9146 0.8898 0.8545

THD(%) 7.39 7.56 7.73 7.99 9.2 11.38 12.69 14.48

9 262 0.9873 260 0.9257

Note: The output current may vary due to sense resistance errors and soldering impedance.

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HT7L5600 E27/8W 8S, 266.5mA LED Bulb AC Power Turn-on

Fig 1. Start-up Time (115VAC)

Fig 2. Start-up Time (230VAC)

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HT7L5600 E27/8W 8S, 266.5mA LED Bulb AC Power Turn-off

Fig 3. Turn-off Delay Time (115VAC)

Fig 4. Turn-off Delay Time (230VAC)

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HT7L5600 E27/8W 8S, 266.5mA LED Bulb DC Power

Fig 5. Input Voltage/Current (115VAC)

Fig 6. Input Voltage/Current (230VAC)

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HT7L5600 E27/8W 8S, 266.5mA LED Bulb AC Power

Fig 7. Input Voltage/Current (115VAC)

Fig 8. Input Voltage/Current (230VAC)

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HT7L5600 E27/8W 8S, 266.5mA LED Bulb LED Voltage/Current Ripple

Fig 9. Output Voltage/Current Ripple (115VAC)

Fig 10. Output Voltage/Current Ripple (230VAC)

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HT7L5600 E27/8W 8S, 266.5mA LED Bulb Protection (1): Remove LED load after AC Power turn-on

Fig 11. Open Load Protection-1 (90VAC)

Fig 12. Open Load Protection-1 (265VAC)

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HT7L5600 E27/8W 8S, 266.5mA LED Bulb Protection (2): Remove LED load before AC Power turn-on

Fig 13. Open Load Protection-2 (90VAC)

Fig 14. Open Load Protection-2 (265VAC)

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HT7L5600 E27/8W 8S, 266.5mA LED Bulb Protection (3): Short LED Load after AC Power turn-on

Fig 15. Short Load Protection-3 (115VAC)

Fig 16. Short Load Protection-3 (230VAC)

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HT7L5600 E27/8W 8S, 266.5mA LED Bulb Protection (4): Short Load before AC Power Turn-on, then cancel Short Load

Fig 17. Short Load Protection-4(115VAC)

Fig 18. Short Load Protection -4 (230VAC)

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HT7L5600 E27/8W 8S, 266.5mA LED Bulb Protection (5): Short LED Load before AC Power Turn-on

Fig 19. Short Load Protection -5(115VAC)

Fig 20. Short Load Protection -5 (230VAC)

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HT7L5600 E27/8W 8S, 266.5mA LED Bulb

Efficiency(%)

System Performance 85.00 84.00 83.00 82.00 81.00 80.00 79.00 78.00 77.00 76.00 75.00

8S, 270mA

90

100 115 135 180 220 240 265 AC input(Vac)

Fig 21. Efficiency vs. AC Input Voltage

Iout(mA)

274 272 270 268 266 264 262 260 258

8S, 270mA

256 254 90

100

115

135 180 220 AC input(Vac)

240

265

Fig 22. Iout Regulation vs. AC Input Voltage

Power Factor(PF)

1 0.98 0.96 0.94 0.92 0.9 0.88 0.86 0.84

8S, 270mA

0.82 0.8 90

100

115 135 180 220 AC input(Vac)

240 265

Fig 23. Power Factor (PF) vs. AC Input Voltage

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HT7L5600 E27/8W 8S, 266.5mA LED Bulb 275

Iout(mA)

270 265 260 255

90Vac

100Vac

115Vac

135Vac

180Vac

220Vac

240Vac

265Vac

250 7s

8s

9s

LED Series

Fig 24. Iout Regulation vs. LED(s) Regulation 280 275

Iout(mA)

270 265 260 255

90Vac

100Vac

115Vac

135Vac

180Vac

220Vac

240Vac

265Vac

250 -40

-20

0

25

45

65

Temperature(°C)

Fig 25. Iout vs. Temperature

15 14 13

THD(%)

12 11 10 9 8 7

8S, 270mA

6 5 90

100

115

135 180 220 AC input(Vac)

240

265

Fig 26. THD vs. AC Input Voltage

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HT7L5600 E27/8W 8S, 266.5mA LED Bulb

EMI Test：The power board into E27 LED shell (8S2P) EMI _Conduction

Fig 27. 110V EMI_LINE

Fig 28. 110V EMI_NEUTRAL

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HT7L5600 E27/8W 8S, 266.5mA LED Bulb

Fig 29. 230V EMI_LINE

Fig 30. 110V EMI_NEUTRAL

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HT7L5600 E27/8W 8S, 266.5mA LED Bulb EMI _Radiatied

Fig 31. 110V EMI_VERTICAL

Fig 32. 110V EMI_HORIZONTAL

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HT7L5600 E27/8W 8S, 266.5mA LED Bulb

Fig 33. 230V EMI_VERTICAL

Fig 34. 230V EMI_ HORIZONTAL

Standard EN61000-3-2 Measurement The full results meet with the EN61000-3-2 regulations.

Fig 35. EN61000-3-2/VIN=230VAC/ILED=266mA/8S

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