Texas Instruments DRV8462 H-Bridge Stepper Motor Driver
Texas Instruments DRV8462 H-Bridge Stepper Motor Driver is a wide-voltage, high-power, high-performance stepper motor driver. The device supports up to 65V supply voltage, and integrated MOSFETs with 100mΩ HS + LS on-resistance allow up to 10A current.
The auto-torque feature boosts efficiency by adjusting the current according to the load torque. Standstill power saving mode reduces power loss during motor holding conditions. Silent step guarantees noiseless operation at low speeds and standstill. Internal current sense eliminates the need for sense resistors, saving PCB area and cost. The built-in indexer supports up to 1/256 micro-stepping, and the automatic micro-stepping mode interpolates the input STEP signal to reduce overhead on the controller. Sensorless stall detection eliminates end stops from the system. The device supports other protection and diagnostic features for robust and reliable operation.
The Texas Instruments DRV8462 requires minimal tuning to configure the features. With a smaller PCB area, it supports higher power density than external FET drivers. High energy efficiency coupled with precise, noiseless operation makes the DRV8462 ideal for high-performance stepper systems.
Features
- Stepper motor driver
- SPI or H/W interface with STEP/DIR pins
- Up to 1/256 micro-stepping indexer
- 4.5V to 65V operating supply voltage range
- Supports standard 24V, 36V, and 48V rails
- 100mΩ HS + LS at 24V, 25°C low RDS(ON)
- High current capacity per bridge
- DDW Package: 5A full-scale, 3.5A RMS
- DDV Package: 10A full-scale, 7A RMS
- DDW package pin-to-pin is compatible with
- DRV8452DDWR: 48V, 5A full-scale
- DRV8461DDWR: 65V, 3A full-scale
- Integrated current sensing and regulation
- 5% full-scale current accuracy
- Smart tune and mixed decay regulation options
- Silent step decay mode for silent operation at a standstill and low speed
- Automatic micro-stepping mode for step frequency interpolation
- Customizable micro-stepping indexer table
- Auto-torque for load-dependent current control
- Standstill power saving mode
- Supports 1.8V, 3.3V, 5.0V logic inputs
- Low-current sleep mode (3µA)
- Separate logic supply voltage (VCC)
- Protection and diagnostic features
- Sensorless Stall Detection
- VM undervoltage lockout (UVLO)
- Open-load detection (OL)
- Overcurrent protection (OCP)
- Thermal shutdown (OTSD)
- Fault condition output (nFAULT)
- Indexer zero position output (nHOME)
Applications
- Textile machines, sewing machines
- Factory automation, stepper drives, and robotics
- Medical imaging, diagnostics, and equipment
- Stage lighting
- ATMs, currency counters
- PLC, DCS, and PAC
- Multifunction printers
- 3D printer
- Outdoor IP camera
Simplified Schematic
