TPS92511: Using in series-parallel with LM3466 multi string led balancer

Nicholas Burczyk60

Prodigy 130 points

Part Number: TPS92511
Other Parts Discussed in Thread: LM3466, , TPS92512, TPS92513, TPS92510

Hi,

Is it possible to use TPS92511 with LM3466?

If yes how would the LM3466 SEN and SRC pin be connected to the TPS92511?

Please see the below mockup. I am connecting the LM3466 SEN and SRC pins to the LX rather than to GND.

Kind Regards,

Nicholas

over 6 years ago

0 Irwin Nederbragt over 6 years ago

TI__Mastermind 28655 points

Hello,

This may be able to work though the values connected to Veq (they are compensation values for the LM3466) may need to change and it may require large capacitors across the LED strings. If you chose a part that had external compensation you set it up with much lower bandwidth which would help this work. TPS92510, TPS92512, TPS92513 might be better choices to try this.

Regards,

0 Nicholas Burczyk60 over 6 years ago in reply to Irwin Nederbragt

Prodigy 130 points

Ok thank you very much I will change it to one of the other TPS chips.

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TPS92511: Using in series-parallel with LM3466 multi string led balancer