SLVSDR9F October   2016  – June 2026 DRV8702-Q1 , DRV8703-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
    1.     Pin Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 SPI Timing Requirements
    7. 5.7 Switching Characteristics
    8.     15
    9. 5.8 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1  Bridge Control
        1. 6.3.1.1 Logic Tables
      2. 6.3.2  MODE Pin
      3. 6.3.3  nFAULT Pin
      4. 6.3.4  Current Regulation
      5. 6.3.5  Amplifier Output (SO)
        1. 6.3.5.1 SO Sample and Hold Operation
      6. 6.3.6  PWM Motor Gate Drivers
        1. 6.3.6.1 Miller Charge (QGD)
      7. 6.3.7  IDRIVE Pin (DRV8702-Q1 Only)
      8. 6.3.8  Dead Time
      9. 6.3.9  Propagation Delay
      10. 6.3.10 Overcurrent VDS Monitor
      11. 6.3.11 VDS Pin (DRV8702-Q1 Only)
      12. 6.3.12 Charge Pump
      13. 6.3.13 Gate Drive Clamp
      14. 6.3.14 Protection Circuits
        1. 6.3.14.1 VM Undervoltage Lockout (UVLO2)
        2. 6.3.14.2 Logic Undervoltage (UVLO1)
        3. 6.3.14.3 VCP Undervoltage Lockout (CPUV)
        4. 6.3.14.4 Overcurrent Protection (OCP)
        5. 6.3.14.5 Gate Driver Fault (GDF)
        6. 6.3.14.6 Thermal Shutdown (TSD)
        7. 6.3.14.7 Watchdog Fault (WDFLT, DRV8703-Q1 Only)
        8. 6.3.14.8 Reverse Supply Protection
      15. 6.3.15 Hardware Interface
        1. 6.3.15.1 IDRIVE (6-level input)
        2. 6.3.15.2 VDS (6-Level Input)
    4. 6.4 Device Functional Modes
    5. 6.5 Programming
      1. 6.5.1 SPI Communication
        1. 6.5.1.1 Serial Peripheral Interface (SPI)
        2. 6.5.1.2 SPI Format
  8. 7 Register Maps
  9. 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 External FET Selection
        2. 8.2.2.2 IDRIVE Configuration
        3. 8.2.2.3 VDS Configuration
        4. 8.2.2.4 Current Chopping Configuration
      3. 8.2.3 Application Curves
  10. 9 Power Supply Recommendations
    1. 9.1 Bulk Capacitance Sizing
  11. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  12. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  13. 12Revision History
  14. 13Mechanical, Packaging, and Orderable Information

6.3 Feature Description

Table 6-1 and Table 6-2 list the recommended external components for the device.

Table 6-1 External Components
COMPONENTPIN 1PIN 2RECOMMENDED
C(VM1)VMGND0.1-µF ceramic capacitor rated for VM
C(VM2)VMGND≥ 10-µF electrolytic capacitor rated for VM
C(VCP)VCPVM16-V, 1-µF ceramic capacitor
C(SW)CPHCPL0.1-µF X7R capacitor rated for VM
C(DVDD)DVDDGND6.3-V, 1-µF ceramic capacitor
C(AVDD)AVDDGND6.3-V, 1-µF ceramic capacitor
R(IDRIVE)IDRIVEGNDFor resistor sizing, see the Section 8.2 section
R(VDS)VDSGNDFor resistor sizing, see the Section 8.2 section
R(nFAULT)VCC(1)nFAULT≥ 10 kΩ
R(nWDFLT)VCC(1)nWDFLT≥ 10 kΩ
R(SENSE)SPSN or GNDOptional low-side sense resistor
R(VDRAIN)(2)VDRAINVM100-Ω series resistor
(1) The VCC pin is not a pin on the DRV870x-Q1, but a VCC supply voltage pullup is required for open-drain outputs nFAULT. These pins can be pulled up to either AVDD or DVDD.
(2) The R(VDRAIN) resistor must be used between the VDRAIN and VM pins to minimize current to the VDRAIN pin if no external reverse battery protection is implemented on the VDRAIN pin.
Table 6-2 External Gates
COMPONENTGATEDRAINSOURCERECOMMENDED
Q(HS1)GH1VMSH1Supports FETs up to 200nC at 40kHz PWM
For more information, see Section 8
Q(LS1)GL1SH1SP or GND
Q(HS2)GH2VMSH2
Q(LS2)GL2SH2SP or GND