Need Power solution for FAN control board

mutharasan sm

Prodigy 40 points

Other Parts Discussed in Thread: TPS61093

Dear Team,

I working on UPS fan control board power supply. Kindly suggest part number and some demo circuit.

Below is my specification:

Input : From DC power supply 2~10V

Output : 3~10V / below 100mA (constant voltage )

When input goes below 3V, have to supply from this power supply solution( alternate supply ).

Kindly suggest some solution with demo circuit.

Best regards,

Muthu

over 6 years ago

0 Jeffery Pfarr over 6 years ago

TI__Genius 14317 points

Hello Muthu,

If I understand correctly, for 2V - 3V Inputs, you need a variable output from 3 V to 10 V and for 3 V to 10 V inputs, this supply is switched out and you use the input supply?

0 mutharasan sm over 6 years ago in reply to Jeffery Pfarr

Prodigy 40 points

Dear Pfarr,

Yes your correct.

Kindly help me to get solution and some demo circuit for my evaluation.

I looking for your kind reply.

Thank you,

Best regards,

Muthu

0 Helen chen over 6 years ago in reply to mutharasan sm

TI__Mastermind 40080 points

Dear Muthu,

Please take a look at TPS61093, this is part may just suit for your application.

0 mutharasan sm over 6 years ago in reply to Helen chen

Prodigy 40 points

Dear Halen,

I studied TPS61093 datasheet its look like fixed output volatge, I need variable output volatge.

If you have any sample or demo schemit circuit diagram, Kindly share with me.

Input : 1-3V DC and Output : 3-10V DC / 50mA

Thank you,

Best regards,

Muthu

0 Helen chen over 6 years ago in reply to mutharasan sm

TI__Mastermind 40080 points

Hi Muthu,

they can adjust the output voltage by inject an external voltage into the FB pin. And for the TPS61093, it can support >1.6Vin. Please check the following picture.

0 mutharasan sm over 6 years ago in reply to Helen chen

Prodigy 40 points

Dear Halen,

Below is some points.

1.This is emergency UPS FAN control board supply for data center. We have only one source input, when input goes below 3V its boost up 3-10V.

2.This circuit shows i have supply FB pin with external supply and also have to give PWM signal also.

This is corrcet which I understanding from your circuit (Point no.2).

Kindly advise with single DC soure with vaiable output volatge or how can I solve my qurrey using this circuit.

Awaiting your kind reply.

Thank you,

Best regards,

Muthu

0 Helen chen over 6 years ago in reply to mutharasan sm

TI__Mastermind 40080 points

Hi Muthu,

You can also use a DC voltage, like Vin. Thus when Vin high, Vout low, when Vin low, Vout high. But you need to calculate the value of R, R1 and R2 to get what you wanted.

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Need Power solution for FAN control board