moteus r4.11

robots, , ,

Here’s yet another update to the moteus line, moteus r4.11!

r4.11 is electrically, mechanically, and software compatible with r4.3, r4.5, and r4.8.

This revision supports two alternate footprints for the CAN-FD transceiver to better support component availability and refines the power stage for the DRV8353 gate driver. moteus r4.8 was the first version to use the DRV8353 because of, once again, component availability issues. However, it was developed on a very abbreviated schedule. With r4.11 the EMI is much improved over r4.8 and r4.5, and the efficiency is much better than r4.8 at all input voltages and PWM frequencies.

PWM Frequency24V r4.1124V r4.836V r4.1136V r4.8
15kHz95% / 0.28W94% / 0.20W95% / 0.30W92% / 0.25W
40kHz93% / 0.35W88% / 0.25W90% / 0.38W85% / 0.30W
50kHz91% / 0.36W84% / 0.30W89% / 0.40W84% / 0.35W
moteus r4.11 and r4.8 thermal efficiency and idle power driving nearly stationary motor

The matching development kit will be available shortly, once the r4.8 developer kits sell out.