TPS61094EVM-066: capacitor on eval board does not charge?

frank boddeke

Part Number: TPS61094EVM-066
Other Parts Discussed in Thread: TPS61094

hello

just got the tps61094evk board and tried to use it. it does not seem to work as i expected: i never see the cap on the board charge and i see just the input voltage on the output?

got these settings:

- output voltage selection: 3.3v

- charging voltage se;ection: 2.6v

- charging current selection: 100ma

- en & mode both high

- jp1 & jp2 both short pin 2 and 3

vin connected to a power supply

vout connected to my board needing on 3.3v

any help is greatly appreciated!

thanks

frank

over 1 year ago

0 Nathan Ding over 1 year ago

TI__Genius 12505 points

Hi Frank,

I find you post two thread about TPS61094, I reply you on the other thread. I think we can communicate in that thread to avoid possible confusion.

I will close this thread. Let me know if you have any question.

Regards,

Nathan

0 frank boddeke over 1 year ago in reply to Nathan Ding

Prodigy 30 points

hi nathan

apart from not boosting (see other thread) i also do not see the cap charging? the voltage over the cap stays close to 0v - that should fill up to 2.6v (charging voltage selection) right?

thanks

frank

0 Nathan Ding over 1 year ago in reply to frank boddeke

TI__Genius 12505 points

Hi Frank,

May I know the VIN in this condition? The charging starts only when VIN is higher than setting output voltage plus 100mV (that is 3.4V).

Regards,

Nathan

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TPS61094EVM-066: capacitor on eval board does not charge?