STEVAL-ILL027V1 STMicroelectronics, STEVAL-ILL027V1 Datasheet - Page 18

• 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

STEVAL-ILL027V2 demonstration board
18/23
Figure 13. Output LED current and voltage for input voltage 260 V / 50 Hz
In case the output LEDs are disconnected, STEVAL-ILL027V2 has designed an open load
protection.
As can be seen, output voltage is regulated to 78 V.
Figure 14. Open load measurement
Figure 15
L6562A reaches the turn-on threshold (capacitor C5 is charged via resistors R12 and R16),
the device starts switching (there is output current present) and the voltage V
because output voltage is almost 0 V and so the capacitor C5 cannot be supplied via the
transformer from the output voltage. As soon as the voltage on the V
shows short-circuit protection. As soon as the voltage on the V
Figure 14
shows open load protection after connecting mains voltage 230 V AC.
Doc ID 16815 Rev 2
CC
pin of the L6562A
CC
pin of the
CC
decreases,
AN3111