SLVSGZ1A May   2024  – July 2024 DRV8161 , DRV8162

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specification
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information 1pkg
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Diagrams
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Gate Drivers
        1. 7.3.1.1 PWM Control Modes
          1. 7.3.1.1.1 2-pin PWM Mode
          2. 7.3.1.1.2 1-pin PWM Mode (preview only)
          3. 7.3.1.1.3 Independent PWM Mode
        2. 7.3.1.2 Gate Drive Architecture
          1. 7.3.1.2.1 Tickle Charge Pump (TCP)
          2. 7.3.1.2.2 Deadtime and Cross-Conduction Prevention (Shoot through protection)
      2. 7.3.2 Pin Diagrams
        1. 7.3.2.1 Four Level Input Pin (CSAGAIN)
        2. 7.3.2.2 Digital output nFAULT (DRV8162, DRV8162L)
        3. 7.3.2.3 Digital InOut nFAULT/nDRVOFF (DRV8161)
        4. 7.3.2.4 Multi-level inputs (IDRIVE1 and IDRIVE2)
        5. 7.3.2.5 Multi-level digital input (VDSLVL)
        6. 7.3.2.6 Multi-level digital input DT/MODE
      3. 7.3.3 Low-Side Current Sense Amplifiers
        1. 7.3.3.1 Bidirectional Current Sense Operation
      4. 7.3.4 Gate Driver Shutdown Sequence (nDRVOFF)
        1. 7.3.4.1 nDRVOFF Diagnostic
      5. 7.3.5 Gate Driver Protective Circuits
        1. 7.3.5.1 GVDD Undervoltage Lockout (GVDD_UV)
        2. 7.3.5.2 MOSFET VDS Overcurrent Protection (VDS_OCP)
        3. 7.3.5.3 Thermal Shutdown (OTSD)
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Typical Application with DRV8161
      2. 8.2.2 Typical Application with DRV8162 and DRV8162L
      3. 8.2.3 External Components
  10. 9 Layout
    1. 9.1 Layout Guidelines
  11. 10Device and Documentation Support
    1. 10.1 Device Support
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Community Resources
    5. 10.5 Trademarks
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Tape and Reel Information

7.3.2.3 Digital InOut nFAULT/nDRVOFF (DRV8161)

Figure 7-8 shows the structure of the open-drain output and input pin. In the DRV8161 device variant, two functions nFAULT and nDRVOFF are achieved by sharing one device pin, nFAULT/nDRVOFF. The open-drain output requires an external pullup resistor to function correctly. If a fault condition is detected, the device activates Open Drain buffer, and nFAULT/nDRVOFF pin is driven low. The nFAULT/nDRVOFF pins is internally connected to Gate Drive Shutdown logic, and the gate drive outputs are shutdown (pull-down) if the nFAULT/nDRVOFF pin low. Refer to Table 7-7 for the device actions including nFAULT.

DRV8161 DRV8162 nFAULT/nDRVOFF Open Drain Output and Input buffer Figure 7-10 nFAULT/nDRVOFF Open Drain Output and Input buffer