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The product is a four-channel motor driver module with a built-in motor driver IC HT7K1411, supporting four driver functions, forward, backward, brake, and standby. It can drive four DC motors, two 2-phase 4-wire stepper motors, or two 4-phase 5-wire stepper motors, making it ideal for applications such as smart cars, DIY robotic arms, and more.
| Pin | Pin name | Function |
|---|---|---|
| 1 | VDD | Logical power supply: 2.5V~5.5V |
| 2 | GND | Ground (logical) |
| 3 | M1A | Motor control signal input |
| 4 | M1B | Motor control signal input |
| 5 | M2A | Motor control signal input |
| 6 | M2B | Motor control signal input |
| 7 | M3A | Motor control signal input |
| 8 | M3B | Motor control signal input |
| 9 | M4A | Motor control signal input |
| 10 | M4B | Motor control signal input |
| 11 | CS4 | Motor4 current sensing point |
| 12 | CS3 | Motor3 current sensing point |
| 13 | CS2 | Motor2 current sensing point |
| 14 | CS1 | Motor1 current sensing point |
| 15 | OUT1A | Motor output |
| 16 | OUT1B | Motor output |
| 17 | OUT2A | Motor output |
| 18 | OUT2B | Motor output |
| 19 | OUT4A | Motor output |
| 20 | OUT4B | Motor output |
| 21 | OUT3A | Motor output |
| 22 | OUT3B | Motor output |
| 23 | VM | Motor power supply: 5V~24V |
| 24 | GND | Ground (motor) |
| Part number | BM22D1221-1 | BM22D1421-1 |
|---|---|---|
| Channel | 2-channel | 4-channel |
| IC | HT7K1411 x 2 | HT7K1411 x 4 |
| Power supply | ⬥ Logical power: 2.5V~5.5V
⬥ Motor: 5V~24V |
⬥ Logical power: 2.5V~5.5V
⬥ Motor: 5V~24V |
| Supported motor | ⬥ Two DC motors
⬥ One 2-phase 4-wire stepper motor ⬥ One 4-phase 5-wire stepper motor |
⬥ Four DC motors
⬥ Two 2-phase 4-wire stepper motor ⬥ Two 4-phase 5-wire stepper motor |
| Max. current
per channel |
1.2A | 1.2A |
| Interface | I/O | I/O |
| HS Code (reference) | 9030.90.90.00-8 |
|---|
