ST expands GANSPIN family with new 100V GaN motor drivers
STMicroelectronics has expanded its GANSPIN family of gallium nitride (GaN) motor drivers with three new 100V devices designed to deliver compact, efficient and high-performance motor control.
The GANSPIN1100 series comprises three 5mm x 6.5mm devices: the GANSPIN1102, featuring a typical on-resistance (RDS(on)) of 2.4mΩ; the GANSPIN1102E, which adds top-side cooling for improved thermal management; and the GANSPIN1105, with a typical RDS(on) of 5.5mΩ.
Target applications include robotics, particularly humanoid robot joint actuation, as well as industrial servo drives, e-bikes, drones and power tools. The integrated design supports lightweight, space-saving systems, while the optimised pinout enables a compact two-layer PCB layout, helping reduce design complexity and overall bill of materials (BoM) costs.
Each device integrates two GaN transistors, gate drivers with optimised gate resistance, and VCC and bootstrap capacitors. Continuous output current reaches up to 60A, depending on the device.
Independent high-side and low-side gate-driver outputs allow designers to optimise switching timing for efficiency and electromagnetic interference (EMI) performance. With a propagation delay of 20ns and delay matching of 1ns, the devices support switching frequencies of up to 5MHz.
Additional features include smart shoot-through protection, input interlocking and a dynamic bootstrap switch. Undervoltage and overvoltage lockout protection on both the VCC and bootstrap supplies, alongside thermal shutdown, help ensure reliable operation.
Housed in a 1.12mm-high land grid array (LGA) package, the devices operate across a junction temperature range of -40°C to 125°C.
The GANSPIN1102, GANSPIN1102E and GANSPIN1105 are expected to be available by the end of 2026, with pricing starting at $x.xx for orders of 1,000 units.
STMicroelectronics will demonstrate the GANSPIN1102E driving the joints of a robotic arm at electronica 2026, taking place in Munich from 10–13 November. The demonstration will be held at the ST booth in Hall C3, Booth 101.
