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TPS65124 for 3.3V, 16.0V and -7.0V

Anand Kumar Rai
Intellectual 720 points
Other Parts Discussed in Thread: TPS65124

Hi Folks,

I am using TPS65124 for driving the TFT display.

I want to generate 3.3V(Vmain), 16.0V(Vgh) and -7.0V(Vgl) from TPS65124 with the supply input of 5.0V . As per the equations given on Page 17 of the datasheet I have calculated following values:

R1 = 1.87 Mohm, R2 = 154 kohm, R3 = 324Kohm, R4 = 154Kohm, R5 = 215Kohm, R6 = 124Kohm, all the resistor values are 1% standard value.

The circuit I am thinking to use is shown below:

Please confirm the values calculated for the above mentioned power supply, and since I am looking for customized sequencing, I have selected this option. Apart from this is there anything else I need to take care.

Thanks in advance.

Regards

-Anand 

  • 0
    TI__Guru 65170 points

    Hello Anand,

    The calculations according the formulas on page 17 of the datasheet are correct, you just need to make sure that the output power you need is within the power capability of the application. This is as well given in the datasheet on page 17.

    The datasheet gives the information about all the important parameters you should check.

    Best regards,
    Briitte