TPS65100: power

Ross Atkinson

Prodigy 20 points

Part Number: TPS65100

I am looking to power a TFT with the following

vo1 = 5v

v02 = -10v

vo3 = 15v

vcom 2-5v

will the tps65100 be able to do this for do i need a different device and which one would you recommend?

regards

Ross

over 5 years ago

0 Aaron Goodson over 5 years ago

TI__Expert 6330 points

Hi Ross,

I have notified our expert regarding this topic. Please expect a response by 5/28/20.

Thanks,

Aaron

0 Liaqat Khan over 5 years ago

TI__Mastermind 18550 points

Hello Ross,

Since your VO1 is low, you will need to use charge pump quadrippler (4x) to achieve VO3 of 15V. TPS65100 has an integrated charge pump trippler in it so you will tneed o add one more stage of charge pump. Similarly, to achieve your VO2=-10V, you will need to add more stages to negative charge pump driver. Please see application note below that explains this in more detail.

https://www.ti.com/lit/an/slva192/slva192.pdf?ts=1590615662744

Kind Regards,

Liaqat

0 Ross Atkinson over 5 years ago in reply to Liaqat Khan

Prodigy 20 points

I am looking to power a TFT with the following

vin can be 3.3v or 5v.

vo1 = 5v

v02 = -10v

vo3 = 15v

vcom 2-5v

will the tps65100 i assume i need extra stages?

if I am looking to power a different TFT with the following

vin can be 3.3v or 5v.

vo1 = 10.7v

v02 = -7v

vo3 = 16v

vcom = 4v

will the tps65100 be able to do this?

regards

Ross

0 Liaqat Khan over 5 years ago in reply to Ross Atkinson

TI__Mastermind 18550 points

Hello again,

For the first case you described above, either 3.3V or 5V input should work fine but you will need extra stages for both positive and negative charge pumps as described in the application note I attached in the earlier post.

For second case, again both 3.3V or 5V input should work and you don't need any extra stages for charge pumps: the configuration shown in figure 15 in the datasheet should work fine for this case.

I hope this clarifies.

Kind Regards,

Liaqat

Power management

Power management forum

TPS65100: power