Step-up module output unstable below 5V input

TECHNICAL SUPPORT Batteries & Power
1

Customer:

I took the battery and step-up module to an electronics shop, and the technician there said the device works well above 5V, but at 3.7V from the battery the output voltage is unstable. I need to figure out how to boost the battery voltage to something like 8-10V. I’m not sure if I need any additional equipment besides what I already have. I’m completely inexperienced with voltage and electronics, so any suggestions on how to increase the battery voltage would be helpful.

Original message (Croatian)

Nema problema, nismo se razumjeli, nećete nigdje zakasniti a ja neću propasti.

:slight_smile:

Već kad ste se javili, jučer sam bio u chip elektru u đakovu, odnio bateriju i onaj boost up ili kako ga već zovete. kaže mi čovjek koji tamo radi da taj uređaj, ta mala elektronika funkcionira odlično iznad 5V, a na 3,7 koliko je od baterije napon blesa nešto.

uglavnom, morati ću malo po netu istražiti da vidim kako bih mogao podići napon bateriji na npr. 8-9-10.

ne znam jel još neki uređaj osim toga što sam dobio trebam ili ne.

totalni sam out-sajder što se napona, fizike i volta tiče pa ću probati nekako to riješiti.

ako imate kakvu sugestiju ili prijedlog kako da podignem baterijama napon molio bih vas da mi i to kažete kad budete uhvatili vremena.

Originally submitted via email support on 18 October 2017. Migrated to the forum for community visibility.

2

Soldered Support:

I’ll test the step-up module to see what’s happening. You likely need a different step-up module that can work with such low input voltages.

Original message (Croatian)

bez brige :slight_smile:

Što se tiče step-up modula, testirat ću i ja da vidim što se događa. Moguće da je takva situacija. Vama onda treba samo neki drugi step-up modul koji može raditi s tako malim naponima.

U svakom slučaju, probam pa javim.

3

Soldered Support:

I tested the modules and everything seems to be in order. With 3.5V input voltage it can provide between 8 and 10V without problems. I didn’t test it under load.

So although it’s outside the specified voltage range, it works fine (according to the datasheet the minimum input voltage is 5V). My opinion is that it will work under lighter loads, but I think it won’t work under heavier loads.

Original message (Croatian)

isprobao sam module, sve se čini u redu.

S 3.5V ulaznog napona bez problema može dati između 8 i 10V. Nisam probao opteretiti.

Dakle, iako je van specifiranog napona, radi u redu(prema datasheetu min. input voltage je 5V). Moje mišljenje je da će i raditi pod slabijim opterećenjem, ali mislim da po većim neće.

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