DRV8434A
The DRV8434A is an electronic component from Texas Instruments. View the full DRV8434A datasheet below including electrical characteristics, absolute maximum ratings.
Manufacturer
Texas Instruments
Category
Integrated CircuitsOverview
Part: DRV8434S — Texas Instruments
Type: PWM Microstepping Stepper Motor Driver
Description: The DRV8434S is a fully integrated stepper motor driver with two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing, capable of driving up to 2.5-A full-scale output current with a 4.5 to 48-V operating supply voltage range.
Operating Conditions:
- Supply voltage: 4.5–48 V
- Operating ambient temperature: -40 to 125 °C
- Operating junction temperature: -40 to 150 °C
- Motor full-scale current: 0–2.5 A
- Motor RMS current: 0–1.8 A
- Applied STEP signal frequency: 0–500 kHz
Absolute Maximum Ratings:
- Max supply voltage (VM): 50 V
- Max internal regulator voltage (DVDD): 5.75 V
- Max open drain output current (nFAULT): 10 mA
- Max operating junction temperature: 150 °C
- Max storage temperature: 150 °C
Key Specs:
- VM operating supply current: 5 mA (typ)
- VM sleep mode supply current: 2 μA (typ)
- High-side FET on resistance: 165 mΩ (typ) at T J = 25 °C, I O = -1 A
- Low-side FET on resistance: 165 mΩ (typ) at T J = 25 °C, I O = 1 A
- Output slew rate: 240 V/μs (typ) at V VM = 24 V, I O = 1 A
- Current trip accuracy: ±4% (max) for 1 A < I O < 2.5 A
- Overcurrent protection: 4 A (min)
- Thermal shutdown: 165 °C (typ)
Features:
- SPI Interface with STEP/DIR pins
- Up to 1/256 Microstepping Indexer
- Integrated Current Sense Functionality (no sense resistors required)
- Smart tune, slow, and mixed decay options
- Low RDS(ON): 330 mΩ HS + LS at 24 V, 25°C
- TRQ_DAC bits to scale full-scale current
- Configurable Off-Time PWM Chopping: 7-μs, 16-μs, 24-μs, or 32-μs
- Supports 1.8 V, 3.3 V, 5.0 V Logic Inputs
- Daisy Chain support with SPI
- Low-Current Sleep Mode (2 μA)
- Spread spectrum clocking for low EMI
- Sensorless stall detection
- Protection Features: VM Undervoltage Lockout (UVLO), Charge Pump Undervoltage (CPUV), Overcurrent Protection (OCP), Open Load Detection (OL), Overtemperature Warning (OTW), Thermal Shutdown (OTSD), Fault Condition Output (nFAULT)
Applications:
- Printers and Scanners
- ATM and Money Handling Machines
- Textile Machines
- Stage Lighting Equipment
- Office and Home Automation
- Factory Automation and Robotics
- Medical Applications
- 3D Printers
Package:
- HTSSOP (28) - 9.7mm x 4.4mm
- VQFN (24) - 4mm x 4mm
Features
- PWM Microstepping Stepper Motor Driver
- -SPI Interface with STEP/DIR pins
- -Up to 1/256 Microstepping Indexer
- Integrated Current Sense Functionality
- -No Sense Resistors Required
- -±4% Full-Scale Current Accuracy
- Smart tune, slow, and mixed decay options
- 4.5 to 48-V Operating Supply Voltage Range
- Low RDS(ON): 330 mΩ HS + LS at 24 V, 25°C
- High Current Capacity: 2.5 A Full-Scale, 1.8 A rms
- TRQ_DAC bits to scale full-scale current
- Configurable Off-Time PWM Chopping -7-μs, 16-μs, 24-μs, or 32-μs
- Supports 1.8 V, 3.3 V, 5.0 V Logic Inputs
- Daisy Chain support with SPI
- Low-Current Sleep Mode (2 μA)
- Spread spectrum clocking for low EMI
- Small Package and Footprint
- Protection Features
- -VM Undervoltage Lockout (UVLO)
- -Charge Pump Undervoltage (CPUV)
- -Overcurrent Protection (OCP)
- -Sensorless stall detection
- -Open Load Detection (OL)
- -Overtemperature Warning (OTW)
- -Thermal Shutdown (OTSD)
- -Fault Condition Output (nFAULT)
Applications
Pin Configuration
Figure 5-1. PWP PowerPAD™ Package 28-Pin HTSSOP Top View
Figure 5-1. PWP PowerPAD™ Package 28-Pin HTSSOP Top View
Figure 5-2. RGE Package 24-Pin VQFN with Exposed Thermal PAD Top View
Electrical Characteristics
Typical values are at T A = 25°C and VVM = 24 V. All limits are over recommended operating conditions, unless otherwise noted.
| PARAMETER | PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|---|
| POWER SUPPLIES (VM, DVDD) | POWER SUPPLIES (VM, DVDD) | POWER SUPPLIES (VM, DVDD) | POWER SUPPLIES (VM, DVDD) | POWER SUPPLIES (VM, DVDD) | POWER SUPPLIES (VM, DVDD) | POWER SUPPLIES (VM, DVDD) |
| I VM | VM operating supply current | ENABLE = 1, nSLEEP = 1, No motor load | 5 | 6.5 | mA | |
| I VMQ | VM sleep mode supply current | nSLEEP = 0 | 2 | 4 | μA | |
| t SLEEP | Sleep time | nSLEEP = 0 to sleep-mode | 120 | μs | ||
| t RESET | nSLEEP reset pulse | nSLEEP low to clear fault | 20 | 40 | μs | |
| t WAKE | Wake-up time | nSLEEP = 1 to output transition | 0.8 | 1.2 | ms | |
| t ON | Turn-on time | VM > UVLO to output transition | 0.8 | 1.2 | ms | |
| t EN | Enable time | ENABLE = 0/1 to output transition | 5 | μs | ||
| V DVDD | Internal regulator voltage | No external load, 6V < V VM < 48V | 4.75 | 5 | 5.25 | V |
| V DVDD | Internal regulator voltage | No external load, V VM = 4.5V | 4.2 | 4.35 | V | |
| CHARGE PUMP (VCP, CPH, CPL) | CHARGE PUMP (VCP, CPH, CPL) | CHARGE PUMP (VCP, CPH, CPL) | CHARGE PUMP (VCP, CPH, CPL) | CHARGE PUMP (VCP, CPH, CPL) | CHARGE PUMP (VCP, CPH, CPL) | CHARGE PUMP (VCP, CPH, CPL) |
| V VCP | VCP operating voltage | 6V < V VM < 48V | V VM + 5 | V | ||
| f (VCP) | Charge pump switching frequency | V VM > UVLO; nSLEEP = 1 | 360 | kHz | ||
| LOGIC-LEVEL INPUTS (STEP, DIR, nSLEEP, nSCS, SCLK, SDI, ENABLE) | LOGIC-LEVEL INPUTS (STEP, DIR, nSLEEP, nSCS, SCLK, SDI, ENABLE) | LOGIC-LEVEL INPUTS (STEP, DIR, nSLEEP, nSCS, SCLK, SDI, ENABLE) | LOGIC-LEVEL INPUTS (STEP, DIR, nSLEEP, nSCS, SCLK, SDI, ENABLE) | LOGIC-LEVEL INPUTS (STEP, DIR, nSLEEP, nSCS, SCLK, SDI, ENABLE) | LOGIC-LEVEL INPUTS (STEP, DIR, nSLEEP, nSCS, SCLK, SDI, ENABLE) | LOGIC-LEVEL INPUTS (STEP, DIR, nSLEEP, nSCS, SCLK, SDI, ENABLE) |
| V IL | Input logic-low voltage | 0 | 0.6 | V | ||
| V IH | Input logic-high voltage | 1.5 | 5.5 | V | ||
| V HYS | Input logic hysteresis | 150 | mV | |||
| I IL1 | Input logic-low current (nSCS) | VIN = 0 V | 8 | 12 | μA | |
| I IL | Input logic-low current (other pins) | V IN = 0 V | -1 | 1 | μA | |
| I IH1 | Input logic-high current (nSCS) | VIN = DVDD | 500 | nA | ||
| I IH | Input logic-high current (other pins) | V IN = 5 V | 100 | μA | ||
| PUSH-PULL OUTPUT (SDO) | PUSH-PULL OUTPUT (SDO) | PUSH-PULL OUTPUT (SDO) | PUSH-PULL OUTPUT (SDO) | PUSH-PULL OUTPUT (SDO) | PUSH-PULL OUTPUT (SDO) | PUSH-PULL OUTPUT (SDO) |
| R PD,SDO | Internal pull-down resistance | 5mA load, with respect to GND | 30 | 60 | Ω | |
| R PU,SDO | Internal pull-up resistance | 5mA load, with respect to VSDO | 30 | 60 | Ω | |
| I SDO | SDO Leakage Current | SDO = VSDO and 0V | -1 | 1 | μA | |
| CONTROL OUTPUTS (nFAULT) | CONTROL OUTPUTS (nFAULT) | CONTROL OUTPUTS (nFAULT) | CONTROL OUTPUTS (nFAULT) | CONTROL OUTPUTS (nFAULT) | CONTROL OUTPUTS (nFAULT) | CONTROL OUTPUTS (nFAULT) |
| V OL | Output logic-low voltage | I O = 5 mA | 0.5 | V | ||
| I OH | Output logic-high leakage | -1 | 1 | μA | ||
| MOTOR DRIVER OUTPUTS (AOUT1, AOUT2, BOUT1, BOUT2) | MOTOR DRIVER OUTPUTS (AOUT1, AOUT2, BOUT1, BOUT2) | MOTOR DRIVER OUTPUTS (AOUT1, AOUT2, BOUT1, BOUT2) | MOTOR DRIVER OUTPUTS (AOUT1, AOUT2, BOUT1, BOUT2) | MOTOR DRIVER OUTPUTS (AOUT1, AOUT2, BOUT1, BOUT2) | MOTOR DRIVER OUTPUTS (AOUT1, AOUT2, BOUT1, BOUT2) | MOTOR DRIVER OUTPUTS (AOUT1, AOUT2, BOUT1, BOUT2) |
| High-side FET on resistance | T J = 25 °C, I O = -1 A | 165 | 200 | mΩ | ||
| R DS(ON) | T J = 125 °C, I O = -1 A | 250 | 300 | mΩ | ||
| R DS(ON) | T J = 150 °C, I O = -1 A | 280 | 350 | mΩ | ||
| T J = 25 °C, I O = 1 A | 165 | 200 | mΩ | |||
| R DS(ON) | Low-side FET on resistance | T J = 125 °C, I O = 1 A | 250 | 300 | mΩ | |
| T J = 150 °C, I O = 1 A | 280 | 350 | mΩ | |||
| t SR | Output slew rate | V VM = 24 V, I O = 1 A, Between 10% and 90% | 240 | V/μs | ||
| PWM CURRENT CONTROL (VREF) | PWM CURRENT CONTROL (VREF) | PWM CURRENT CONTROL (VREF) | PWM CURRENT CONTROL (VREF) | PWM CURRENT CONTROL (VREF) | PWM CURRENT CONTROL (VREF) | PWM CURRENT CONTROL (VREF) |
| K V | Transimpedance gain | VREF = 3.3 V | 1.254 | 1.32 | 1.386 | V/A |
| I VREF | VREF leakage current | VREF = 3.3 V | 8.25 | μA |
Typical values are at T A = 25°C and VVM = 24 V. All limits are over recommended operating conditions, unless otherwise noted.
| PARAMETER | PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|---|
| TOFF = 00b | 7 | μs | ||||
| t OFF | PWM off-time | TOFF = 01b TOFF = 10b TOFF = 11b 0.25 A < I O < 0.5 A | -12 | 16 24 32 | 12 | |
| ΔI TRIP | Current trip accuracy | 0.5 A < I O < 1 A 1 A < I O < 2.5 A | -6 -4 | 6 4 | % | |
| I O,CH | AOUT and BOUT current matching | I O = 2.5 A | -2.5 | 2.5 | % | |
| PROTECTION CIRCUITS | PROTECTION CIRCUITS | PROTECTION CIRCUITS | PROTECTION CIRCUITS | PROTECTION CIRCUITS | PROTECTION CIRCUITS | PROTECTION CIRCUITS |
| V UVLO | VM UVLO lockout | VM falling, UVLO falling | 4.1 | 4.25 | 4.35 | |
| VM rising, UVLO rising | 4.2 | 4.35 | 4.45 | V | ||
| V UVLO,HYS | Undervoltage hysteresis | Rising to falling threshold | 100 | mV | ||
| V RST | VM UVLO reset | VM falling, device reset, no SPI communications | 3.9 | V | ||
| V CPUV | Charge pump undervoltage | VCP falling; CPUV report | V VM + 2 | V | ||
| I OCP | Overcurrent protection | Current through any FET | 4 | A | ||
| t OCP | Overcurrent deglitch time | 2 | μs | |||
| t RETRY | Overcurrent retry time | OCP_MODE = 1b | 4 | ms | ||
| t OL | Open load detection time | EN_OL = 1b | 50 | ms | ||
| I OL | Open load current threshold | EN_OL = 1b | 75 | mA | ||
| T OTW | Overtemperature warning | Die temperature T J | 135 | 150 | 165 | °C |
| T OTSD | Thermal shutdown | Die temperature T J | 150 | 165 | 180 | °C |
| T HYS_OTSD | Thermal shutdown hysteresis | Die temperature T J | 20 | °C | ||
| T HYS_OTW | Overtemperature warning hysteresis | Die temperature T J | 20 | °C |
Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
| MIN | MAX | UNIT | |
|---|---|---|---|
| Power supply voltage (VM) | -0.3 | 50 | V |
| Charge pump voltage (VCP, CPH) | -0.3 | V VM + 7 | V |
| Charge pump negative switching pin (CPL) | -0.3 | V VM | V |
| nSLEEP pin voltage (nSLEEP) | -0.3 | V VM | V |
| Internal regulator voltage (DVDD) | -0.3 | 5.75 | V |
| SDO output reference voltage (VSDO) | -0.3 | 5.75 | V |
| Control pin voltage (STEP, DIR, ENABLE, nFAULT, SDI, SDO, SCLK, nSCS) | -0.3 | 5.75 | V |
| Open drain output current (nFAULT) | 0 | 10 | mA |
| Reference input pin voltage (VREF) | -0.3 | 5.75 | V |
| Continuous phase node pin voltage (AOUT1, AOUT2, BOUT1, BOUT2) | -1 | V VM + 1 | V |
| Transient 100 ns phase node pin voltage (AOUT1, AOUT2, BOUT1, BOUT2) | -3 | V VM + 3 | V |
| Peak drive current (AOUT1, AOUT2, BOUT1, BOUT2) | Internally Limited | Internally Limited | A |
| Operating ambient temperature, T A | -40 | 125 | °C |
| Operating junction temperature, T J | -40 | 150 | °C |
| Storage temperature, T stg | -65 | 150 | °C |
Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| V VM | Supply voltage range for normal (DC) operation | 4.5 | 48 | V |
| V I | Logic level input voltage | 0 | 5.5 | V |
| V VREF | VREF voltage | 0.05 | 3.3 | V |
| f STEP | Applied STEP signal (STEP) | 0 | 500 (1) | kHz |
| I FS | Motor full-scale current (xOUTx) | 0 | 2.5 (2) | A |
| I rms | Motor RMS current (xOUTx) | 0 | 1.8 (2) | A |
| T A | Operating ambient temperature | -40 | 125 | °C |
| T J | Operating junction temperature | -40 | 150 | °C |
Thermal Information
| THERMAL METRIC (1) | THERMAL METRIC (1) | PWP (HTSSOP) 28 PINS | RGE (VQFN) 24 PINS | UNIT |
|---|---|---|---|---|
| R θJA | Junction-to-ambient thermal resistance | 29.7 | 39 | °C/W |
| R θ JC(top) | Junction-to-case (top) thermal resistance | 23 | 28.9 | °C/W |
| R θJB | Junction-to-board thermal resistance | 9.3 | 16 | °C/W |
| ψ JT | Junction-to-top characterization parameter | 0.3 | 0.4 | °C/W |
| ψ JB | Junction-to-board characterization parameter | 9.2 | 15.9 | °C/W |
| R θ JC(bot) | Junction-to-case (bottom) thermal resistance | 2.4 | 3.4 | °C/W |
Typical Application
The following design procedure can be used to configure the DRV8434S.
Figure 8-1. Typical Application Schematic (HTSSOP package)
Figure 8-1. Typical Application Schematic (HTSSOP package)
Figure 8-2. Typical Application Schematic (VQFN package)
Package Information
PLASTIC QUAD FLATPACK - NO LEAD
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| DRV8434S | Texas Instruments | — |
| DRV8434SPWPR | Texas Instruments | 28-PowerTSSOP (0.173", 4.40mm Width) |
| DRV8434SPWPR.A | Texas Instruments | — |
| DRV8434SRGER | Texas Instruments | HTSSOP (28) 9.7mm x 4.4mm |
| DRV8434SRGER.A | Texas Instruments | — |
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