LM5180-Q1: Minimum switch current of LM5180-Q1

takahiko yokota

Mastermind 7135 points

Part Number: LM5180-Q1

I have a question about LM5180-Q1.

This device's Isw-peak is 1.5A(typ), but are there the limitation about Isw-min?

Best regards,

Yokota

over 6 years ago

0 David Baba over 6 years ago

TI__Mastermind 40040 points

Hello Yokoa,

The min peak current is set at 1.23A and this needs to be accounted for when accounting for the max power output capability of the converter. This is worse case at Vin min.

Hope this helps?

0 takahiko yokota over 6 years ago in reply to David Baba

Mastermind 7135 points

Hi David-san

Thank you for the information.
Are there the limitation about minimum load current necessary to use this device?

Best regards,

Yokota

0 David Baba over 6 years ago in reply to takahiko yokota

TI__Mastermind 40040 points

Hello Yakota-san,

Yes, there is a minimum load requirement for this device, it is set to 0.5% of full load. If this is min load level is violated (Iload <0.5% of Full load) you will experience peak charging on the output voltage. Using a Zener clamp may be necessary to ensure adequate load is provided should Vout increase?

Hope this helps?

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LM5180-Q1: Minimum switch current of LM5180-Q1