STEVAL-ILL027V1 STMicroelectronics, STEVAL-ILL027V1 Datasheet - Page 4

• Manufacturer Part Number: STEVAL-ILL027V1
• Description: BOARD EVAL LED DRIVER FOR L6562A
• Manufacturer: STMicroelectronics

Specifications of STEVAL-ILL027V1

• Design Resources: STEVAL-ILL027V1 Schematics STEVAL-ILL027V1 BOM STEVAL-ILL027V1 Gerber Files
• Current - Output / Channel: 260mA
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 70V
• Features: Short-Circuit Protection
• Voltage - Input: 120VAC
• Utilized Ic / Part: L6562A
• Product: Display Modules
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption
• Other names: 497-10170

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18 W single-stage offline LED driver board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Block diagram for the L6562A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Schematic diagram of the single-stage LED driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Illustration of key waveforms of the converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Inductor current and multiplier input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Input voltage and input current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
LED voltage and LED current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Switching waveform of MOSFET Q1: conclusions when Vout > Vin . . . . . . . . . . . . . . . . . 11
Switching waveform of MOSFET Q1: conclusions when Vout < Vin . . . . . . . . . . . . . . . . . 11
STEVAL-ILL027V2 schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Output LED current and voltage for input voltage 230 V / 50 Hz . . . . . . . . . . . . . . . . . . . . 17
Output LED current and voltage for input voltage 180 V / 50 Hz . . . . . . . . . . . . . . . . . . . . 17
Output LED current and voltage for input voltage 260 V / 50 Hz . . . . . . . . . . . . . . . . . . . . 18
Open load measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Short-circuit measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
EMI measurement - detector average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
EMI measurement - detector quasi-peak . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
LED current vs. input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Efficiency vs. input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
LED current vs. LED number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Doc ID 16815 Rev 2
AN3111