Part Number: TPS65140
HI team member
When EN is disabled, VOI1 of TPS65140 ouputs nearly VIN by boost DC/DC configuration (VIN -> Inductance -> diode -> VO1).
This means LCD panel 's AVDD is applied VIN(5V) vorlage during EN is diabled,
…
Dear sir,
I find an voltage drop on VO1 when the ambient temperature is down to -40 degree.(only VO1 rail)
I have modified compensation component, Cin, and Cout. Also check the component working temperature.
But this issue still happened.
Did you have…
Hi Sir,
Sorry to bother you.
As we can see from datasheet, if my customer don’t need to use linear regulator control (FB4 and BASE), it should be connected with VIN, am I correct? If my customer Vin is 5V, can I connect FB4 and BASE to this 5Vin? May…
Other Parts Discussed in Thread: TPS65145 , TPS65141 , TPS65140 For TPS65140/TPS65141/TPS65145 datasheet P4, Vref_Typ is written in 1.13V.
Is this typo?
And, correct Vref_Typ is 1.213V, OK?
Best regards,
Satoshi
Hello TI,
See my schematic below. I have a VIN of 5V and I am trying to get VO3 of 15V. I have the R5/R6 combination of 432k/38.3k respectively. Per this change I only get 17V on the output. Are there any other techniques I should use? I am currently…
Other Parts Discussed in Thread: TPS65140 Hello TI,
I was looking back at the specs of the TPS65140 to check the max current on VO1. There are discrepancies in the datasheet. On page 1, it says “Up to 15V / 400mA”. On page 2 in the typical…
Hello,
Devices that are functionally similar to TPS65100 are TPS65101/105 and TPS65140. For other devices on your list, I will assign this thread to appropriate product line within TI and one of the engineers will respond to you directly.
Kind Regards…
Other Parts Discussed in Thread: TPS65140 0083.TPS65140-Q1 Vo3 drop .ppt
When I had 2mA from no load, the output of Vo3 falls approximately 0.5V.
Why is it? Please watch an attached file.
Hello Jun,
Other similar devices without VCOM buffer are TPS65140/41/45 and TPS65100/101/105 but they have a linear regulator controller instead and I believe they are not much different price wise. I do not see any other similar devices besides these…
Hello,
TPS65150 and TPS65140 should work well for this LCD application. Please review the datasheets for these devices which are available online.
Kind Regards,
Liaqat