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DRV8424 Stepper Driver
DRV8424
Texas Instrumentsic motor driver
The DRV8424 is a stepper motor driver with integrated current sensing and microstepping capabilities, designed for industrial and consumer applications.
In stock
Specifications
8- Operating Voltage
- 4.5-33V
- Supply Current
- 6.5mA (VM operating supply current) mA
- Interface
- STEP/DIR, GPIO for control pins
- Resolution
- 1/256 microstepping
- Range
- 0-2.5A (DRV8424), 0-2A (DRV8425) A
- Accuracy
- ±5% full-scale current accuracy for current sensing %
- Temperature Range
- -40-125°C (operating), -65-150°C (storage)
- Package
- HTSSOP (28-pin) or VQFN (24-pin)
Pinout
23| Pin | Name | Functions | Notes |
|---|---|---|---|
| AOUT1 | Winding A output | GPIO | Connect to stepper motor winding. |
| AOUT2 | Winding A output | GPIO | Connect to stepper motor winding. |
| PGND | Power ground | GND | Connect to system ground. |
| BOUT2 | Winding B output | GPIO | Connect to stepper motor winding |
| BOUT1 | Winding B output | GPIO | Connect to stepper motor winding |
| CPH | Charge pump switching node | GND | Connect a X7R, 0.022-µF, VM-rated ceramic capacitor from CPH to CPL. |
| CPL | Charge pump negative switching pin | GND | Connect a X7R, 0.022-µF, VM-rated ceramic capacitor from CPH to CPL. |
| DIR | Direction input | GPIO | Logic level sets the direction of stepping; internal pulldown resistor. |
| ENABLE | Enable input | GPIO | Logic low to disable device outputs; logic high to enable; internal pullup to DVDD. Also determines the type of OCP and OTSD response. |
| DVDD | Logic supply voltage | POWER | Connect a X7R, 0.47-μF to 1-μF, 6.3-V or 10-V rated ceramic capacitor to GND. |
| GND | Device ground | GND | Connect to system ground. |
| VREF | Current set reference input | GPIO | Maximum value 3.3 V for DRV8424 and 2.64V for DRV8425. DVDD can be used to provide VREF through a resistor divider. |
| M0 | Microstepping mode-setting pin | GPIO | Sets the step mode; internal pulldown resistor. |
| M1 | Microstepping mode-setting pin | GPIO | Sets the step mode; internal pulldown resistor. |
| DECAY0 | Decay-mode setting pin | GPIO | Sets the decay mode (see Section 7.3.6). |
| DECAY1 | Decay-mode setting pin | GPIO | Sets the decay mode (see Section 7.3.6). |
| STEP | Step input | GPIO | A rising edge causes the indexer to advance one step; internal pulldown resistor. |
| VCP | Charge pump output | POWER | Connect a X7R, 0.22-μF, 16-V ceramic capacitor to VM. |
| VM | Power supply | POWER | Connect to motor supply voltage and bypass to PGND with two 0.01-µF ceramic capacitors (one for each pin) plus a bulk capacitor rated for VM. |
| TOFF | Decay mode off time during current chopping | GPIO | Four level pin. Also sets the ripple current in smart tune ripple control mode. |
| nFAULT | Fault indication | GND | Pulled logic low with fault condition; open-drain output requires an external pullup resistor. |
| nSLEEP | Sleep mode input | GPIO | Logic high to enable device; logic low to enter low-power sleep mode; internal pulldown resistor. An nSLEEP low pulse clears faults. |
| PAD | Thermal pad | GND | Connect to system ground. |
Interactive pinout
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DRV8424
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