Powerful Brushless Motor Driver v5

Volume discounts available to educational institutions. Purchase orders accepted from Australian registered educational institutions, email steelbarrobotics@gmail.com.

Powerful BRUSHLESS Motor Driver version 5 is a small brushless motor driver intended to drive motors up to 250W, a great fit for many robotics projects. Everything uses connectors for quick and easy wiring, and no soldering is required. The design is optimised for low power dissipation, with less than 5W power dissipation under all operating conditions. The current sensing circuitry uses RDS(on) based current sensing with temperature compensation for high efficiency. I2C and CAN bus is available for communication with the main microcontroller. Up to 200mA at 3.3V can be sourced from the I2C port, which can be used to power external circuitry.

Input voltage: 8-25V (30V surge), Continuous Output Current: 15A (Peak), 10.6A (RMS)

Small size: L: 47mm, W: 30mm, T: 7mm.

Connectors: Power: XT30, Motor: MR30, CAN: GH-2P, I2C: GH-4P, DEBUG: GH-2P.

Maximum PWM frequency: 50KHz

Maximum Motor Speed: 160000 ERPM

Supported Encoders: Sin/Cos Encoder (Recommended), Incremental Encoder optical or magnetic

Supported Motors:

• Robomaster M2006 P36
• Robomaster M3508 P19

PCB specs: 6 layer, 2oz copper on all layers, 1.2mm thickness, epoxy filled vias, min via hole 0.2mm, components on both sides.

Main parts:

STM32G431 microcontroller, 170MHz M4 CPU, optimised for motor control, with internal temperature sensor.

DRV8323S gate driver, 3x half bridge, with current sense amplifiers configured in RDS(on) mode.

BSZ0901NS MOSFET, ultra low RDS(on) of 1.7 milliohms at 25degc and 2.7 milliohms at 150 degc.

600uF onboard low ESR tantalum polymer capacitors, much smaller than similar electrolytic capacitors.

TJA1462A CAN transciever with signal improvement capability, operating at high speed of 8 mbps.

TPS54302 buck converter VCC -> 5V, TPS62A02 buck converter 5V -> 3.3V, AP7343D LDO 5V -> analog 3.3V.