This DC-DC converter (buck converter, input must be higher than output) can take a higher input voltage than most, right up to 60v maximum, and produce an output voltage from 1.5v all the way to 30v. It also has a Constant Current mode but not over the entire range, see the images.
Please see this PDF for full data about the HW-732, but here’s some typical numbers…
28 Volts at 1 Amp Out, 46.2 Volts In, 85% Efficiency
12 Volts at 2 Amps Out, 14.4 Volts In, 81% Efficiency
12 Volts at 1 Amps Out, 16.8 Volts In, 82% Efficiency
5 Volts at 2 Amps Out, 16.8 Volts In, 65% Efficiency
5 Volts at 1 Amps Out, 28.8 Volts In, 70% Efficiency
Important: Current limiting is only active in a specific area of operation, see the images and the PDF linked above.
Also Importamt: The module may get hot, I mean, burn your fingers hot, if running at the full current, the PDF has some charts for each output voltage which show an “orange” band for where caution may be required in regards to not touching hot things. All my testing has been without a heatsink, on my bench.
* Voltage: In 5 to 60v; Out 1.5 to 30v
* Current: Up to 2A continuous depending on in/out voltages (see images)
* Dimensions: 47mm long, 24mm wide, 14mm high
* Potential uses: step-down from up to 14-S lithium packs, led driving, general power supply from old laptop power pack…
