TPS65100: Power sequencing query

Shreenidhi Patil

Expert 3126 points

Part Number: TPS65100
Other Parts Discussed in Thread: TPS65150

Hello Team ,

Hello team ,

We have chosen the TFT LCD Display from Leadtech .

We are planning to use the TPS65100 Triple output regulator supply.

Power Sequencing of TFT LCD Display is AVDD(Vo1) & VCOM(Vo4)--->Vneg(Vo2)--->Vpos(Vo3)

But Our regulator TPS65100 will provide AVDD(Vo1)--->Vneg(Vo2)--->Vpos(Vo3)-->VCOM.

Is there , any way we can change the power sequencing or suggest some part with the power sequencing shown in point 1

Thank you

Is it possible to change the TPS65100 sequencing as same as LCD Power sequencing?

over 7 years ago

0 Shreenidhi Patil over 7 years ago

TI__Expert 3126 points

Hello team ,
Please help me out on this query

0 Shreenidhi Patil over 7 years ago in reply to Shreenidhi Patil

TI__Expert 3126 points

Hello team ,

Can you also please provide me the power down sequence

0 Diaara over 7 years ago

TI__Intellectual 2805 points

Hello Shreenidhi,

The defaut power-on sequence of TPS65100 is as you mentionned and the power-down sequence depends on the different load currents and output capacitances. The power-on sequencing could be modified externally with the help of load switches.
In order to help you select the best fitting solution I would need some more information. What are the requirements for the bias in terms of voltage and loads values (VIN, AVDD, VGH, VGL, VCOM)?

Best regards,
Diaara