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How to do LED current calibration with TLD5501-2?

How to do LED current calibration with TLD5501-2?

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Community Manager
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Japanese Translation: TLD5501-2でLEDの電流校正を行うには?

Current calibration procedure:
• Power the load with a low analog dimming value (for example 10%)
• Set PWMI1,2 = LOW and disconnect the load at the same time (to avoid Vout drifts from operating conditions and bring the output current to 0)
• Quickly (to avoid Vout drifts) µC enables the calibration routine: LOOPCTRL_CH1,2.ENCAL_CH1,2 = HIGH
• Quickly (to avoid Vout drifts) µC starts the calibration: LEDCURRCAL_CH1,2.SOCAL_CH1,2 = HIGH
• Waiting time (needed to internally perform the calibration routine) → aprox. 200 µs
• TLD5501-2QV will set the FLAG: LEDCURRCAL_CH1,2.EOCAL_CH1,2 = HIGH, when calibration routine has finished
• Reconnect the load
• The output current is automatically adjusted to a low offset and more accurate analog dimming value


Read more in the datasheet section 8.2 https://www.infineon.com/dgdl/Infineon-TLD5501-2QV-DS-v01_00-EN.pdf?fileId=5546d4625d5945ed015d84198... or have a look at https://www.infineon.com/cms/en/product/power/lighting-ics/litix-automotive-led-driver-ic/litix-powe...