SLOSE54C June   2020  – July 2022 DRV8428

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1. 5.1 Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Indexer Timing Requirements
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Stepper Motor Driver Current Ratings
        1. 7.3.1.1 Peak Current Rating
        2. 7.3.1.2 RMS Current Rating
        3. 7.3.1.3 Full-Scale Current Rating
      2. 7.3.2 PWM Motor Drivers
      3. 7.3.3 Microstepping Indexer
      4. 7.3.4 Controlling VREF with an MCU DAC
      5. 7.3.5 Current Regulation, Off-time and Decay Modes
        1. 7.3.5.1 Mixed Decay
        2. 7.3.5.2 Smart tune Dynamic Decay
        3. 7.3.5.3 Smart tune Ripple Control
        4. 7.3.5.4 Blanking time
      6. 7.3.6 Linear Voltage Regulators
      7. 7.3.7 Logic Level, tri-level, quad-level and seven-level Pin Diagrams
        1. 7.3.7.1 EN/nFAULT Pin
      8. 7.3.8 Protection Circuits
        1. 7.3.8.1 VM Undervoltage Lockout (UVLO)
        2. 7.3.8.2 Overcurrent Protection (OCP)
        3. 7.3.8.3 Thermal Shutdown (OTSD)
        4. 7.3.8.4 Fault Condition Summary
    4. 7.4 Device Functional Modes
      1. 7.4.1 Sleep Mode (nSLEEP = 0)
      2. 7.4.2 Disable Mode (nSLEEP = 1, EN/nFAULT = 0/Hi-Z)
      3. 7.4.3 Operating Mode (nSLEEP = 1, EN/nFAULT = 1)
      4. 7.4.4 Functional Modes Summary
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Stepper Motor Speed
        2. 8.2.2.2 Current Regulation
        3. 8.2.2.3 Decay Modes
        4. 8.2.2.4 Application Curves
      3. 8.2.3 Thermal Application
        1. 8.2.3.1 Power Dissipation
          1. 8.2.3.1.1 Conduction Loss
          2. 8.2.3.1.2 Switching Loss
          3. 8.2.3.1.3 Power Dissipation Due to Quiescent Current
          4. 8.2.3.1.4 Total Power Dissipation
        2. 8.2.3.2 Device Junction Temperature Estimation
  9. 9 Power Supply Recommendations
    1. 9.1 Bulk Capacitance
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.5 Electrical Characteristics

Typical values are at TA = 25°C and VVM = 24 V. All limits are over recommended operating conditions, unless otherwise noted.
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
POWER SUPPLIES (VM, DVDD)
IVMVM operating supply currentEN/nFAULT = 1, nSLEEP = 1, No motor load

3.8

5.6

mA
IVMQVM sleep mode supply currentnSLEEP = 024μA
tSLEEPSleep timenSLEEP = 0 to sleep-mode120μs
tWAKEWake-up timenSLEEP = 1 to output transition0.81.2ms
tONTurn-on timeVM > UVLO to output transition0.81.2ms
VDVDDInternal regulator voltageNo external load, 6 V < VVM < 33 V4.7555.25V
No external load, VVM = 4.2 V

3.9

4.05

V

LOGIC-LEVEL INPUTS (STEP, DIR, nSLEEP)
VILInput logic-low voltage00.6V
VIHInput logic-high voltage1.55.5V
VHYSInput logic hysteresis150mV
IILInput logic-low currentVIN = 0 V–11μA
IIHInput logic-high currentVIN = 5 V100μA
TRI-LEVEL INPUT (M0)
VI1Input logic-low voltageTied to GND00.6V
VI2Input Hi-Z voltageHi-Z1.822.2V
VI3Input logic-high voltageTied to DVDD2.75.5V
IOOutput pull-up current10μA
QUAD-LEVEL INPUT (M1)
VI1Input logic-low voltageTied to GND00.6V
VI2330kΩ ± 5% to GND11.251.4V
VI3Input Hi-Z voltageHi-Z1.822.2V
VI4Input logic-high voltageTied to DVDD2.75.5V
IILOutput pull-up current10μA
SEVEN-LEVEL INPUT (DECAY/TOFF)
VI1Voltage level 1Tied to GND00.1V
VI2Voltage level 214.7kΩ ± 1% to GND0.20.35V
VI3Voltage level 344.2kΩ ± 1% to GND0.550.8V
VI4Voltage level 4100kΩ ± 1% to GND11.25V
VI5Voltage level 5249kΩ ± 1% to GND1.51.75V
VI6Voltage level 6Hi-Z2.12.4V
VI7Voltage level 7Tied to DVDD35.5V
IILOutput pull-up current22.5μA
CONTROL INPUT/OUTPUT (EN/nFAULT)
VOLOutput Logic-low voltage00.6V
RPD2Internal Pull-down Resistance2MΩ
ILLeakage currentVEN/nFAULT = 5 V, FAULT condition375μA
MOTOR DRIVER OUTPUTS (AOUT1, AOUT2, BOUT1, BOUT2)
RDS(ONH)High-side FET on resistanceVVM = 24 V, TJ = 25 °C, IO = -0.5 A750875mΩ
VVM = 24 V, TJ = 125 °C, IO = -0.5 A11301350mΩ
VVM = 24 V, TJ = 150 °C, IO = -0.5 A12501450mΩ
RDS(ONL)Low-side FET on resistanceVVM = 24 V, TJ = 25 °C, IO = 0.5 A750875mΩ
VVM = 24 V, TJ = 125 °C, IO = 0.5 A11301350mΩ
VVM = 24 V, TJ = 150 °C, IO = 0.5 A12501450mΩ
tSROutput slew rateVVM = 24 V, IO = 0.5 A, Between 10% and 90%240V/µs
PWM CURRENT CONTROL (VREF)
KVTransimpedance gainVREF = 3 V2.80533.195V/A
tOFFPWM off-time, mixed 30% decayDECAY/TOFF = 14.7 kΩ to GND7μs
DECAY/TOFF = 44.2 kΩ to GND16
DECAY/TOFF = 100 kΩ to GND32
PWM off-time, Smart tune dynamic decayDECAY/TOFF = 249 kΩ to GND7
DECAY/TOFF = Hi-Z16
DECAY/TOFF = Tied to DVDD32
ΔITRIPCurrent trip accuracyIO = 1 A, 10% to 20% current setting–1515%
IO = 1 A, 20% to 67% current setting–1010
IO = 1 A, 68% to 100% current setting–6

6

IO,CHAOUT and BOUT current matchingIO = 1 A–2.52.5%
PROTECTION CIRCUITS
VUVLOVM UVLO lockoutVM falling, UVLO falling3.83.954.05V
VM rising, UVLO rising3.94.054.15
VUVLO,HYSUndervoltage hysteresisRising to falling threshold100mV
IOCPOvercurrent protectionCurrent through any FET1.7A
tOCPOvercurrent deglitch time

1.8

μs
tRETRYOvercurrent retry time

4

ms

TOTSDThermal shutdownDie temperature TJ150165180°C
THYS_OTSDThermal shutdown hysteresisDie temperature TJ20°C