Brushed DC (BDC) motor driver chips typically employ an H-bridge topology for controlling motor forward and reverse rotation and speed regulation. Representative products include ChipBro's L9110S (2.5V-12V, continuous current 800mA), Toshiba's TB6612FNG (VM up to 15V, continuous current 1.2A), Allegro's A5995 series (full-bridge output, maximum current 3.2A, voltage 40V), and the domestically produced SS6548D (6.5V-40V, continuous current 8A, peak current 16A, RDS(on) 45mΩ), etc.
Brushless DC (BLDC) motor driver chips are used to drive three-phase or single-phase BLDC motors. They typically include solutions with pre-drivers or integrated power stages. Representative products include STMicroelectronics' STSPIN series (such as the STSPIN32G4, which integrates an MCU, gate driver, and power management); Peakray Technology's dedicated BLDC drive control chips (using a dual-core architecture and hardware-based algorithm technology); Bi-Micro's KP93101 (three-phase sensorless) and KP90873X (single-phase with Hall effect) series; Melexico's MLX81339 (integrating FOC algorithm and a 16-bit CPU); and PI's BridgeSwitch-2 IC (an integrated half-bridge BLDC drive solution for high-voltage applications).
Stepper motor driver chips are used to precisely control the position and speed of stepper motors, supporting microstepping for smooth movement. Common products include Trinamic's TMC5130A (voltage 5-46V, phase current 1.4A, supports 256 microsteps and StealthChop silent technology), as well as the widely used A4988 (8-35V, 2A, 1/16 microsteps) and its upgraded version DRV8825 (8.2-45V, 2.5A, 1/32 microsteps).
