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2/6/2018 6:53 AM
 

 

Hello,

 

 

 

we would like to use two MP3515 modules for converting:

 

 

24V to 12V (1.5A) 

 

24V to 5V (1.5A)

 

 

 

 

 

since the datasheet concentrates on  voltages 5V and below, I wanted to ask if the moudule is also recommended for 12V Output.

 

The online Designer has a 100nF capacitor on the VCC pin. The schematic of the EVM does not. Should we plan to insert a capacitor on the VCC pin?

 

 

 

 

Is there a recommended EMI filter design?

 

 

 

Is there anything else to be aware of?

 

 

 

 

 

Thanks,

 

Horst

 

 

 
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2/7/2018 12:22 PM
 

Hi Horst,

 

MPM3515 can work with 12V output. With 24V input, it doesn't violate the maximum duty cycle. There is an internal Vcc cap in the module, so no external Vcc cap is needed. There is no recommended EMI filter design, but you can add place holder for snubber in case you decide to implement it in the future.

 

I would suggest to add feedforward cap placeholder in parallel with R1 in case you need to improve transient response.

 

Thanks,

Kevin

 

 

 
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2/8/2018 3:02 AM
 

 

Thank you for your Reply.

 

 

Horst

 
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