KazzLabs

Voltage converter current limiter.

The limiter limits the output current of the Step-Down, Step-Up, and Step-UpDown converters, turning the voltage converter into a current source.

Enables lossless LED powering or battery charging, with a constant load current regardless of the output voltage. No current-limiting resistor is required.

We usually connect LED light sources as in the diagram below:
Schematic of conventional connections

By using the current limiter we get rid of the resistor which causes unnecessary power loss, the LED supply voltage is dynamically adjusted:
Schematic of the new connection

Description of the limiter terminals:

Pin	Description
PWR+	positive supply
FB	output that controls the converter (FeedBack)
-Load	negative load terminal, positive load terminal is the positive output of the converter
GND	ground, connect to the negative output of the converter
	the potentiometer is used to adjust the output current

It's important not to connect the negative terminal of the load to ground. This will prevent current regulation and could damage the powered device.

Before connecting the limiter, set the converter's output voltage slightly higher than that needed to power the receiver. The limiter will reduce this voltage in accordance with the set output current.

How to connect to a specific voltage converter? View Details

Other converters will be described later. If you have any questions, please contact me by email: support@omega-com.pl

The voltage converter current limiter is available on the Allegro platform.