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LED Driver ICs Forum Discussions

User21095
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We know that the TLD5099 is a controller, but has anyone tried the limit of power output that the TLD5099 can achieve?At room temperature,BOOST TO GND.
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fausto_borg
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As you mentioned, the TLD5099EP is a controller, then the power limit is not related to the device, but mainly to the topology used.
Asynchronous DC-DCs have good performances up to 50-60 W. Above this limit, the power losses become too high (5/10 W) for a small PCB. To avoid overheating you need to increase the PCB area and add heat sinks as well... then probably the design is no longer cost effective...
In this case, (for output power above 60 W) I suggest you to try our 4-switches buck-boost controllers (like TLD5190-QV/QU). This controller enables a synchronous topology for high power DC-DC (up to 250 W without heatsink) in a small space.
You can find more information on our controllers on the LITIX Power webpage

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fausto_borg
Moderator
Moderator 10 likes received 10 sign-ins 5 solutions authored
Moderator
As you mentioned, the TLD5099EP is a controller, then the power limit is not related to the device, but mainly to the topology used.
Asynchronous DC-DCs have good performances up to 50-60 W. Above this limit, the power losses become too high (5/10 W) for a small PCB. To avoid overheating you need to increase the PCB area and add heat sinks as well... then probably the design is no longer cost effective...
In this case, (for output power above 60 W) I suggest you to try our 4-switches buck-boost controllers (like TLD5190-QV/QU). This controller enables a synchronous topology for high power DC-DC (up to 250 W without heatsink) in a small space.
You can find more information on our controllers on the LITIX Power webpage
User21095
Level 1
5 sign-ins First question asked First reply posted
Level 1
Thanks for your detailed explanation
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