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TPS61093: TPS61093 Vout=15V at 200mA can be acheivable?

Ayla Shiva

Intellectual 680 points

Part Number: TPS61093

Hi,

Can i able to achieve Vout=+12V with Iout= 150mA atleast, Actually my Load requires 100mA , so for a safer side I was thinking of to have a Source current atleast 30% to 50% more than what the load consumes? Can this be achievable with TPS61093, what could be the effeciency if I operate at 150mA of the system.

over 4 years ago

0 Ayla Shiva over 4 years ago

Intellectual 680 points

Sorry I missed it, I have checked in WEBENCH power supply Design bench,and Simulated the TPS61093, it can safely deliver 200mA. If any improvements from the design, please suggest.

0 Jasper Li over 4 years ago in reply to Ayla Shiva

TI__Mastermind 46905 points

Hi Ayla,

what is the input voltage in the application?

0 Ayla Shiva over 4 years ago in reply to Jasper Li

Intellectual 680 points

Hi,

The input voltage required is any where between 9V to 15V with Imax= 200mA.

0 Jasper Li over 4 years ago in reply to Ayla Shiva

TI__Mastermind 46905 points

Hi Ayla,

if the input is 9V~15V and output is 12V, we can't use boost converter like TPS61093, in which the VIN can't be higher than VOUT.

we would need a SEPIC topology, could you confirm the input condition?

0 Ayla Shiva over 4 years ago in reply to Jasper Li

Intellectual 680 points

Hi Jasper Li,

I have mistakenly mentioned Vin as +12V, actually the input varies from 3V to 5V.

0 Jasper Li over 4 years ago in reply to Ayla Shiva

TI__Mastermind 46905 points

Hi Ayla,

at VIN=3V, the device has the smallest output current. which is approximately 150mA for 12V output.

0 Ayla Shiva over 4 years ago in reply to Jasper Li

Intellectual 680 points

Hi Jasper Li,

Can you please elaborate, why it cannot able to source the required current? at +3V

0 Jasper Li over 4 years ago in reply to Ayla Shiva

TI__Mastermind 46905 points

Hi Ayla,

because the inductor peak current is limited to 1A typical by the internal FET.

0 Jasper Li over 4 years ago in reply to Jasper Li

TI__Mastermind 46905 points

Hi Ayla,

I closed the post as I assume you had solve the problem. if not, just reply below

0 Ayla Shiva over 4 years ago in reply to Jasper Li

Intellectual 680 points

Thanks Jasper Li