DRV8434A Series

48-V, 2.5-A bipolar stepper motor driver with integrated current sensing and 1/256 microstepping

Catalog

48-V, 2.5-A bipolar stepper motor driver with integrated current sensing and 1/256 microstepping

Part	Output Configuration	Applications	Interface	Supplier Device Package	Technology	Package / Case	Motor Type - AC, DC	Function	Motor Type - Stepper	Current - Output	Step Resolution	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Supply [Max]	Voltage - Supply [Min]	Mounting Type	Voltage - Load [Max]	Voltage - Load [Min]	Step Resolution [Max]	Step Resolution [Min]	Package / Case [custom]	Package / Case [custom]	Supplied Contents	Utilized IC / Part	Primary Attributes	Secondary Attributes	Type	Embedded	Contents
Texas Instruments DRV8434RGER	Half Bridge (2)	General Purpose	Step/Direction	24-VQFN (4x4)	Power MOSFET	24-VFQFN Exposed Pad	Brushed DC Brushless DC (BLDC)	Driver - Fully Integrated Control and Power Stage	Bipolar	2.5 A	>256	-40 °C	125 °C	48 V	4.5 V	Surface Mount
Texas Instruments DRV8434PWPR	Half Bridge (4)	Printer	Step/Direction	28-HTSSOP	Power MOSFET	28-PowerTSSOP	Brushed DC	Driver - Fully Integrated Control and Power Stage	Bipolar	2.5 A		-40 °C	125 °C	48 V	4.5 V	Surface Mount	48 V	4.5 V	1	0.00390625	4.4 mm	0.173 "
Texas Instruments DRV8434PRGER	Half Bridge (2)	General Purpose	PWM	24-VQFN (4x4)	Power MOSFET	24-VFQFN Exposed Pad	Brushed DC	Driver - Fully Integrated Control and Power Stage	Bipolar	2.5 A		-40 °C	125 °C	48 V	4.5 V	Surface Mount
Texas Instruments DRV8434SEVM																							Board(s)	DRV8434S	Motors (Stepper)	SPI Interface(s)	Power Management
Texas Instruments DRV8434APWPR	Half Bridge (4)	Printer	SPI Step/Direction	28-HTSSOP	Power MOSFET	28-PowerTSSOP	Brushed DC	Driver - Fully Integrated Control and Power Stage	Bipolar	2.5 A		-40 °C	125 °C	48 V	4.5 V	Surface Mount	48 V	4.5 V	1	0.00390625	4.4 mm	0.173 "
Texas Instruments DRV8434ARGER		General Purpose	Step/Direction	24-VQFN (4x4)	NMOS	24-VFQFN Exposed Pad	Brushed DC	Driver - Fully Integrated Control and Power Stage	Bipolar	2.5 A		-40 °C	125 °C	48 V	4.5 V	Surface Mount			1	0.00390625
Texas Instruments DRV8434EEVM																							Board(s)	DRV8434E	Motors (Stepper)	Graphical User Interface (GUI) USB Interface(s)	Power Management	Yes MCU	Board(s)

Catalog

48-V, 2.5-A bipolar stepper motor driver with integrated current sensing and 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±4% Full-scale current accuracy4.5-V to 48-V Operating supply voltage rangeMultiple control interface optionsPHASE/ENABLE (PH/EN)PWM (IN/IN)Smart tune, fast and mixed decay optionsLow RDS(ON): 330 mΩ HS + LS at 24 V, 25°CHigh Current Capacity Per Bridge: 4-A peak (brushed), 2.5-A Full-Scale (stepper)Inrush current limiting in brushed-DC applicationsPin to pin compatible with -DRV8426E/P: 33-V, 900 mΩ HS + LSDRV8436E/P: 48-V, 900 mΩ HS + LSDRV8424E/P: 33-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 EMIProtection 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±4% Full-scale current accuracy4.5-V to 48-V Operating supply voltage rangeMultiple control interface optionsPHASE/ENABLE (PH/EN)PWM (IN/IN)Smart tune, fast and mixed decay optionsLow RDS(ON): 330 mΩ HS + LS at 24 V, 25°CHigh Current Capacity Per Bridge: 4-A peak (brushed), 2.5-A Full-Scale (stepper)Inrush current limiting in brushed-DC applicationsPin to pin compatible with -DRV8426E/P: 33-V, 900 mΩ HS + LSDRV8436E/P: 48-V, 900 mΩ HS + LSDRV8424E/P: 33-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 EMIProtection featuresVM undervoltage lockout (UVLO)Charge pump undervoltage (CPUV)Overcurrent protection (OCP)Thermal shutdown (OTSD)Fault condition output (nFAULT)

Description

The DRV8434A 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 DRV8434A is capable of driving up to 2.5 A full-scale output current (dependent on PCB thermal design). The DRV8434A 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 with smart tune ripple control decay. 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. The DRV8434A features advanced stall detection algorithm configurable by two digital IO and one analog IO pins, and does not require an SPI interface to detect stall. By detecting motor stall, system designers can identify if the motor was obstructed and take action as needed which can improve efficiency, prevent damage and reduce audible noise. Other protection features include supply undervoltage, charge pump faults, overcurrent, short circuits, open load, and overtemperature. Fault conditions are indicated by the nFAULT pin. The DRV8434A 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 DRV8434A is capable of driving up to 2.5 A full-scale output current (dependent on PCB thermal design). The DRV8434A 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 with smart tune ripple control decay. 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. The DRV8434A features advanced stall detection algorithm configurable by two digital IO and one analog IO pins, and does not require an SPI interface to detect stall. By detecting motor stall, system designers can identify if the motor was obstructed and take action as needed which can improve efficiency, prevent damage and reduce audible noise. Other protection features include supply undervoltage, charge pump faults, overcurrent, short circuits, open load, and overtemperature. Fault conditions are indicated by the nFAULT pin.