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LED Driver ICs Forum Discussions

j_oehmen
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Moderator 10 replies posted 5 replies posted 10 questions asked
Moderator
e.g. when using one of the boost controllers like TLD5099EP.
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j_oehmen
Moderator
Moderator 10 replies posted 5 replies posted 10 questions asked
Moderator
To avoid switching inductor saturation and high peak current through switching MOSFET, input power is restricted through SWCS pin by sensing MOSFET peak current.

In this case to avoid LED flicker below operating supply range, LITIX Power analog dimming feature is helpful.
LITIX Power SET pin is directly connected to the input voltage of the system through voltage divider (refer to scheme 2 of Figure 19 from TLD5098EP Datasheet or Figure 25 of TLD5099EP Datasheet). User need to adjust SET pin voltage such that it will be above 1.6V when minimum operating voltage is reached to achieve 100% LED current (refer to Figure 17 from TLD5098EP datasheet for SET pin range or Figure 23 from TLD5099EP datasheet).

Take also a look at the LITIX Power page.

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j_oehmen
Moderator
Moderator 10 replies posted 5 replies posted 10 questions asked
Moderator
To avoid switching inductor saturation and high peak current through switching MOSFET, input power is restricted through SWCS pin by sensing MOSFET peak current.

In this case to avoid LED flicker below operating supply range, LITIX Power analog dimming feature is helpful.
LITIX Power SET pin is directly connected to the input voltage of the system through voltage divider (refer to scheme 2 of Figure 19 from TLD5098EP Datasheet or Figure 25 of TLD5099EP Datasheet). User need to adjust SET pin voltage such that it will be above 1.6V when minimum operating voltage is reached to achieve 100% LED current (refer to Figure 17 from TLD5098EP datasheet for SET pin range or Figure 23 from TLD5099EP datasheet).

Take also a look at the LITIX Power page.
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