TPS65135: LCD power IC request

GARETH OU

Part Number: TPS65135
Other Parts Discussed in Thread: TPS65132, TPS65132S, TPS65130

Please help to suggest that the LCD power (VSP : +5.6V ,VPN: -5.6V /30mA) needs to meet the timing below.

TPS65135RTER : (VSP : 3~6V , VPN: -7~-2.5V /80mA) The voltage and current are in line, but not in line with VSP, VPN timing.

over 3 years ago

0 Liaqat Khan over 3 years ago

TI__Mastermind 18550 points

Hello,

Please review TPS65132 devices. These devices have external controls (ENN/ENP) or, in the case of TPS65132S, register based settings that provide user the ability control VSP/VPN ramp up timing.

Kind Regards,

Liaqat

0 GARETH OU over 3 years ago in reply to Liaqat Khan

Guru 11365 points

Hi Liaqat

could you help check the TPS65130 schematic and any need to adjust ?

5775.TPS65130.pdf

0 Liaqat Khan over 3 years ago in reply to GARETH OU

TI__Mastermind 18550 points

Hi Gareth,

Overall, schematics looks good but please add resistors in series with C1 and C331 at location shown in the image below to reduce the bandwidth of the feedforward path.

Kind Regards,

Liaqat

Power management

Power management forum

TPS65135: LCD power IC request