TPS65130: Vneg max current

K.Shidara

Expert 3225 points

Part Number: TPS65130
Other Parts Discussed in Thread: TPS65131

Hi Team

Would you advise my customer's question of Vneg max current at

Vin = 3.15V, Vout = - 6.7V?

Because max current is difficult to estimate from the below graph in datasheet.

Thanks

Best regards,

Shidara

over 5 years ago

0 Aaron Goodson over 5 years ago

TI__Expert 6330 points

Hi,

I have notified our expert regarding this topic. Please expect a response by 4/23/20.

Thanks,

Aaron

0 Liaqat Khan over 5 years ago

TI__Mastermind 18550 points

Hello Shidara-san,

Maximum load current is dependent on input voltage, output voltage, load current and converter efficiency. Basically, in the case of TPS65130/131 it is limited by internal switch current limit. Theoretical max current at Vin=3.15V, Vout=-6.7V should be ~160mA for TPS65130. If customer is concerned about max current margin, I would suggest to use TPS65131 instead of TPS65130 because it has a much higher internal switch current limit and hence can support much higher load current.

Kind Regards,

Liaqat

0 K.Shidara over 5 years ago in reply to Liaqat Khan

TI__Expert 3225 points

Hi Liaqat-san

Thank you so much for your advice.

If I choose TPS65131, Theoretical max current will be 399mA, right?

Any advice should be highly appreciated.

Thanks

Best regards,

Shidara

0 Liaqat Khan over 5 years ago in reply to K.Shidara

TI__Mastermind 18550 points

Hi Shidara-san,

For TPS65131, theoretical maximum current with conditions provided will be approx. 450mA.

Kind Regards,

Liaqat

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TPS65130: Vneg max current