TPS794: How to make TPS794 output 1.2V

Sunny Qin

Part Number: TPS794

HI team,

How to make TPS794 output 1.2V, there is no description on how to configure R1 R2 and C1 when need output 1.2V. Could you help to share some comments?

Thanks.

Regards, Sunny

over 3 years ago

0 Jason Song over 3 years ago

TI__Mastermind 23361 points

Hi Sunny,

In the datasheet, on Page 9, equation 2 provides R1 and R2 calculation and the table in Figure 23 also provides two examples for 1.8V and 3.6V outputs. Please let me know if you are having trouble finding the information.

Regards,
Jason Song

0 Sunny Qin over 3 years ago in reply to Jason Song

TI__Expert 4890 points

Hi Jason,

THansk for for comments, but for 1.2V output, as it`s same with REF, so is it just should output to FB, and then remove R2 and C1? we need your comfrim.

Thanks.

Regards, Sunny

0 Jason Song over 3 years ago in reply to Sunny Qin

TI__Mastermind 23361 points

Hi Sunny,

To get the reference voltage at the output pin, you may simply short FB to the Output, you don't need to put a resistor(R1) in between. So R1, R2, C1 all can be removed once FB is shorting to OUT.

Regards,
Jason Song

0 Sunny Qin over 3 years ago in reply to Jason Song

TI__Expert 4890 points

HI Jason,

Thanks.

Regards, Sunny

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TPS794: How to make TPS794 output 1.2V