Performance of version2

This page provides evaluation of RB0004 – NeopixelBooster shown in the photo below:

You can power the strip with input voltage up to 18 V. The minimal supply voltage is 6 V, however, in such scenario the usage of the module makes no sense. The modules can be used with 2S Li-Ion cells (nominal voltage 8.4  V). Without an active cooling the step-down is able to deliver 4 A continuously on the output. Therefore, we do not recommend connecting more than 60 LEDs on a single module.

RB0004 – UniversalStepdown properties

The following tables provides raw data from testing the step-down converter.

The chip and coil temperature was measured by a K-type thermocoupler after 5 minutes of operation for a 1 minute. In one of the cases the temperature did not rise, therefore, the measurement should reflect conditions during continuous operation.

Parameters for input voltage 12.0 V

Load Output voltage Output ripple Input current Temperature chip, coil Output voltage waveform
0.5 A 5.11 V 40 mV 0.23 A 22 °C, 22°C waveform
1 A 5.1 V 40 mV 0.45 A 24 °C, 25°C waveform
2 A 5.09 V 80 mV 0.89 A 28 °C, 26°C waveform
3 A 5.09 V 120 mV 1.37 A 39 °C, 33°C waveform
4 A 5.1 V 140 mV 1.87 A 68 °C, 45°C waveform

Parameters for input voltage 8.4 V

Load Output voltage Output ripple Input current Temperature chip, coil Output voltage waveform
0.5 A 5.11 V 50 mV 0.31 A 22 °C, 22°C waveform
1 A 5.11 V 50 mV 0.62 A 23 °C, 22°C waveform
2 A 5.11 V 70 mV 1.27 A 27 °C, 25°C waveform
3 A 5.11 V 120 mV 1.94 A 34 °C, 31°C waveform
4 A 5.13 V 150 mV 2.66 A 43 °C, 40°C waveform
5 A 5.13 V 170 mV 3.46 A 68 °C, 64°C waveform

Figures

Measurement setup

The measurements above were taken in an ambient temperature 22°C using the following equipment: