DRV8426E Series

35-V, 1.5-A bipolar stepper driver with integrated current sensing & 1/256 microstepping

Catalog

35-V, 1.5-A bipolar stepper driver with integrated current sensing & 1/256 microstepping

Part	Motor Type - Stepper	Technology	Voltage - Supply [Max]	Voltage - Supply [Min]	Step Resolution	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Package / Case	Motor Type - AC, DC	Applications	Voltage - Load [Max]	Voltage - Load [Min]	Output Configuration	Current - Output	Function	Interface	Supplier Device Package	Utilized IC / Part	Primary Attributes [Min]	Primary Attributes [Max]	Type	Supplied Contents	Package / Case [custom]	Package / Case [custom]
Texas Instruments DRV8426RGER	Bipolar	Power MOSFET	5.5 V	0 V	>256	-40 °C	125 °C	Surface Mount	24-VFQFN Exposed Pad	Brushed DC	General Purpose	33 V	4.5 V	Half Bridge (2)	1.5 A	Driver - Fully Integrated Control and Power Stage	Step/Direction	24-VQFN (4x4)
Texas Instruments DRV8426EVM																Motor Controller/Driver			DRV8426E	4.5 V	33 V	Power Management	Board(s)
Texas Instruments DRV8426ERGER	Bipolar	Power MOSFET	5.5 V	0 V		-40 °C	125 °C	Surface Mount	24-VFQFN Exposed Pad	Brushed DC	General Purpose	33 V	4.5 V	Half Bridge (2)	1.5 A	Driver - Fully Integrated Control and Power Stage	Phase/Enable	24-VQFN (4x4)
Texas Instruments DRV8426PEVM																Motor Controller/Driver				4.5 V	33 V	Power Management	Board(s)
Texas Instruments DRV8426EPWPR	Bipolar	Power MOSFET	5.5 V	0 V		-40 °C	125 °C	Surface Mount	28-PowerTSSOP	Brushed DC	General Purpose	33 V	4.5 V	Half Bridge (2)	1.5 A	Driver - Fully Integrated Control and Power Stage	Phase/Enable	28-HTSSOP						4.4 mm	0.173 "
Texas Instruments DRV8426EEVM																Motor Controller/Driver			DRV8426E	4.5 V	33 V	Power Management	Board(s)

Catalog

35-V, 1.5-A bipolar stepper driver with integrated current sensing & 1/256 microstepping

Key Features

• Dual H-bridge motor driverOne bipolar stepper motorDual bidirectional brushed-DC motorsFour unidirectional brushed-DC motorsIntegrated current sense functionalityNo sense resistors required±5% Full-scale current accuracy4.5-V to 33-V Operating supply voltage rangeMultiple control interface optionsPHASE/ENABLE (PH/EN)PWM (IN/IN)Smart tune, fast and mixed decay optionsLow RDS(ON): 900 mΩ HS + LS at 24 V, 25°CHigh Current Capacity Per Bridge2.5-A peak (brushed), 1.5-A Full-Scale (stepper)Pin to pin compatible with -DRV8424E/P: 33-V, 330 mΩ HS + LSDRV8436E/P: 48-V, 900 mΩ HS + LSDRV8434E/P: 48-V, 330 mΩ HS + LSConfigurable Off-Time PWM Chopping7, 16, 24 or 32 µsSupports 1.8-V, 3.3-V, 5.0-V logic inputsLow-current sleep mode (2 µA)Spread spectrum clocking for low EMIInrush current limiting in brushed-DC applicationsSmall package and footprintProtection featuresVM undervoltage lockout (UVLO)Charge pump undervoltage (CPUV)Overcurrent protection (OCP)Thermal shutdown (OTSD)Fault condition output (nFAULT)Dual H-bridge motor driverOne bipolar stepper motorDual bidirectional brushed-DC motorsFour unidirectional brushed-DC motorsIntegrated current sense functionalityNo sense resistors required±5% Full-scale current accuracy4.5-V to 33-V Operating supply voltage rangeMultiple control interface optionsPHASE/ENABLE (PH/EN)PWM (IN/IN)Smart tune, fast and mixed decay optionsLow RDS(ON): 900 mΩ HS + LS at 24 V, 25°CHigh Current Capacity Per Bridge2.5-A peak (brushed), 1.5-A Full-Scale (stepper)Pin to pin compatible with -DRV8424E/P: 33-V, 330 mΩ HS + LSDRV8436E/P: 48-V, 900 mΩ HS + LSDRV8434E/P: 48-V, 330 mΩ HS + LSConfigurable Off-Time PWM Chopping7, 16, 24 or 32 µsSupports 1.8-V, 3.3-V, 5.0-V logic inputsLow-current sleep mode (2 µA)Spread spectrum clocking for low EMIInrush current limiting in brushed-DC applicationsSmall package and footprintProtection featuresVM undervoltage lockout (UVLO)Charge pump undervoltage (CPUV)Overcurrent protection (OCP)Thermal shutdown (OTSD)Fault condition output (nFAULT)

Description

The DRV8426 is a stepper motor driver for industrial and consumer applications. The device is fully integrated with two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing. The DRV8426 is capable of driving up to 1.5-A full-scale output current (dependent on PCB design). The DRV8426 uses an internal current sense architecture to eliminate the need for two external power sense resistors, saving PCB area and system cost. The device uses an internal PWM current regulation scheme selectable between smart tune, slow and mixed decay options. Smart tune automatically adjusts for optimal current regulation, compensates for motor variation and aging effects and reduces audible noise from the motor. A simple STEP/DIR interface allows an external controller to manage the direction and step rate of the stepper motor. The device can be configured in full-step to 1/256 microstepping. A low-power sleep mode is provided using a dedicated nSLEEP pin. Protection features are provided for supply undervoltage, charge pump faults, overcurrent, short circuits, and overtemperature. Fault conditions are indicated by the nFAULT pin. The DRV8426 is a stepper motor driver for industrial and consumer applications. The device is fully integrated with two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing. The DRV8426 is capable of driving up to 1.5-A full-scale output current (dependent on PCB design). The DRV8426 uses an internal current sense architecture to eliminate the need for two external power sense resistors, saving PCB area and system cost. The device uses an internal PWM current regulation scheme selectable between smart tune, slow and mixed decay options. Smart tune automatically adjusts for optimal current regulation, compensates for motor variation and aging effects and reduces audible noise from the motor. A simple STEP/DIR interface allows an external controller to manage the direction and step rate of the stepper motor. The device can be configured in full-step to 1/256 microstepping. A low-power sleep mode is provided using a dedicated nSLEEP pin. Protection features are provided for supply undervoltage, charge pump faults, overcurrent, short circuits, and overtemperature. Fault conditions are indicated by the nFAULT pin.