Hey Linden,
For reference this is the product page link.
DC-DC Adjustable Step-down Module 5A 75W
CC = Constant current or current limit.
CV = Constant voltage or voltage regulation
As Bob mentioned before, to adjust the output limits with the potentiometers keep in mind “the adjustment knobs are 30-turn potentiometers that control the voltage and current limits. This means you may have to turn them up to 30 turns to get from the top of the output limit range (36V) to your target voltage.”
Hope this summary helps!
Can this be used to regulate power down from 5Vdc to 3.7Vdc?
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Hi Ravneet,
The headroom voltage of this regulator is 3V, so to get an output of 3.7V you would need 6.7V,
We might be able to help more if you tell us what are you trying to achieve?
Thank you for getting back to me!
I’ve got an existing LED system that uses a li-ion 5400mAh 3.7v internal battery, and I’m looking at remove that existing battery and upgrading it to be able to use swappable 6000mAh 3.7v batteries that are individually chargeable. The idea is to extend the operating time for the existing LED system. These swappable batteries would act as power banks essentially.
The existing board that runs the LEDs has +/- pads where the existing 3.7v battery is solders into.
The issue is that most charging boards_
for 3.7v li-ion batteries that I’ve looked at charge on your website offer around 200mA-500mA charging current which would take ages to charge a 6000 mAh battery. There is one board that I’ve found, however, that might be able to charge the battery at 2000 mA, but the only downside with that board it has a 5V boost circuit that outputs 5V 2A via a USB-A connector.
I’m uncertain if existing hardware on the LED’s board can accept 5V power, I can’t identify the parts to be able to look at the datasheet to check this. To play it safe, I’d like to be able to supply it with 3.7V.
I’ve flirted with the idea of using a PD power bank instead with a buck converter.
I’d definitely appreciate some suggestions!
Below are some links to the hardware that I’ve looked at on your website:
https://core-electronics.com.au/lipo-rider-plus-chargerbooster-5v24a-usb-type-c.html?gad_source=1&gclid=Cj0KCQiAqL28BhCrARIsACYJvkcLuEcZMngnPexel2jb7o-mABWvrGHv3aKlmelJV5m1pYQ2Mp-VKl8aAu9JEALw_wcB
https://core-electronics.com.au/polymer-lithium-ion-battery-6000mah.html
https://core-electronics.com.au/lipo-amigo-lipoliion-battery-charger-lipo-amigo-pro.html (just ordered this to try out)
Cheers,
Rav
What does the blue led on the step down module mean
Hi Rav,
I was looking into doing something similar. I’m trying to power a transmitter device that takes 3.7V supply from the 5V rail of my Raspberry Pi Zero 2 W. I found this was successful as a step down converter and was able to adjust the trimpot to the appropriate voltage.
After almost a month however I found that the output voltage was stuck at a range of 4.3V-5V and was wondering if anyone had experienced something similar. I did try turning the trimpot in each direction to its maximum but no change.
Any advice would be appreciated.
