LM51551: Looking for 12Vin to 24Vout/5A boost solution with external sync clock

Ben Kuo

Part Number: LM51551
Other Parts Discussed in Thread: LM5122

Dear team,

I am looking for 12Vin to 24Vout/5A boost(non-isolated) solution.

And need to have sync pin to control switching frequency(200K~420KKHz), RT pin control have tolerance which not meet customer's application.

Looking forward for your feedback.

Thanks,

Ben

0 Stefan Schauer over 2 years ago

HI Ben,

doing a 100W design with a async controller can be quite challenging but depends also on the efficiency you need to get and the thermal requirements.

I suggest to go with an sync. controller like shown here:

Would would recommend to use the newer LM5123 device instead of the LM5122.

Best regards,

Stefan

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