SLOSE51A June   2020  – December 2020 DRV8428E

ADVANCE INFORMATION  

  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
      1. 6.5.1 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 PWM Motor Drivers
      2. 7.3.2 Bridge Control
      3. 7.3.3 Current Regulation, Off-time and Decay Modes
        1. 7.3.3.1 Mixed Decay
        2. 7.3.3.2 Smart tune Dynamic Decay
        3. 7.3.3.3 Smart tune Ripple Control
        4. 7.3.3.4 Blanking time
      4. 7.3.4 Linear Voltage Regulators
      5. 7.3.5 Logic and Seven-Level Pin Diagrams
      6. 7.3.6 Protection Circuits
        1. 7.3.6.1 VM Undervoltage Lockout (UVLO)
        2. 7.3.6.2 Overcurrent Protection (OCP)
        3. 7.3.6.3 Thermal Shutdown (OTSD)
        4. 7.3.6.4 Fault Condition Summary
    4. 7.4 Device Functional Modes
      1. 7.4.1 Sleep Mode (nSLEEP = 0)
      2. 7.4.2 Operating Mode (nSLEEP = 1)
      3. 7.4.3 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 Current Regulation
        2. 8.2.2.2 Power Dissipation and Thermal Calculation
          1. 8.2.2.2.1 Application Curves
    3. 8.3 Alternate Application
      1. 8.3.1 Design Requirements
      2. 8.3.2 Detailed Design Procedure
        1. 8.3.2.1 Current Regulation
          1. 8.3.2.1.1 Stepper Motor Speed
            1. 8.3.2.1.1.1 Decay Modes
  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 Links
    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 currentnSLEEP = 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 V4.555.5V
No external load, VVM = 4.2 V

3.9

4.05

V

LOGIC-LEVEL INPUTS (APH, AEN, BPH, BEN, AIN1, AIN2, BIN1, BIN2, 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
tPDPropagation delayxPH, xEN, xINx input to current change750ns
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
IOOutput pull-up current22.5μA
MOTOR DRIVER OUTPUTS (AOUT1, AOUT2, BOUT1, BOUT2)
RDS(ONH)High-side FET on resistanceTJ = 25 °C, IO = -0.5 A750

875

mΩ
TJ = 125 °C, IO = -0.5 A11301350mΩ
TJ = 150 °C, IO = -0.5 A12501450mΩ
RDS(ONL)Low-side FET on resistanceTJ = 25 °C, IO = 0.5 A750

875

mΩ
TJ = 125 °C, IO = 0.5 A11301350mΩ
TJ = 150 °C, IO = 0.5 A12501450mΩ
tSROutput slew rateVM = 24V, IO = 0.5 A, Between 10% and 90%240V/µs
PWM CURRENT CONTROL (VREFA, VREFB)
KVTransimpedance gainVREF = 3 V2.80533.195V/A
tOFFPWM off-time, mixed 30% decayDECAY/TOFF = 14.7kΩ to GND7μs
DECAY/TOFF = 44.2kΩ to GND16
DECAY/TOFF = 100kΩ to GND32
PWM off-time, smart tune dynamic decayDECAY/TOFF = 249kΩ to GND7
DECAY/TOFF = Hi-Z16
DECAY/TOFF = 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 time1.8μs
tRETRYOvercurrent retry time

4

ms

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