A modestly powerful step-down converter, ideal for LED drivers, battery chargers, general purpose supplies.
Important Note: current batch has a vertically mounted inductor instead of the horizontally mounted inductor pictured. AFAIK they are otherwise identical but I have not compared peformance in detail. The results in this listing were on a horizontally mounted inductor one from memory. Shout out if you find differently!
See photo for the usage, output voltage adjustable 2 – 30v and output current limit adjustable 30mA – 5A
If your load tries to pull more than the limited current you have set, the module will reduce the voltage in order to clamp to that set current.
Caution: Do not provide input less than 6.5v (at terminals under load) or set output less than 2v (at terminals no load), operation under these voltages will not limit current.
To set limits as you desire…
1. Wind both potentiometers anticlockwise about 20 turns, this will put them at the minimums.
2. Connect input power
3. Use a multimeter in DC Volts mode to measure the output voltage (no load), and adjust the Voltage (left side) clockwise to get your desired maximum voltage 2v or greater
4. Use a multimeter in DC Current 10A mode to measure the short circuit current across the output (no load), wind the Current clockwise to get your desired maximum current.
Input: 7 to 32v
Output: 2v to 30v
Typical efficiency: about 85%
Constant output power: about 20W in most cases
Constant output current: 12v input and below, about 4A
Absolute max output current: 5A - provided output power is within thermal capacity
See the two charts I have provided in the images to help you decide on suitability, these were actual tests done by me, using my hobby grade equipment.
Here is the raw data from my testing
All of our products are shipped from Christchurch, New Zealand using CourierPost for NZ, and Airmail for international.
