SLVSGS6 October   2023  – July 2026 DRV3901-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 Recommended Operating Conditions
    3. 5.3 ESD Ratings
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 SPI Timing Requirements
    7. 5.7 Timing Diagrams
    8. 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 External Components
      2. 6.3.2 Power Supplies and Monitors
        1. 6.3.2.1 VDRV and VDD Power Supplies
        2. 6.3.2.2 VREG Switch
        3. 6.3.2.3 VDRV Monitor
        4. 6.3.2.4 VDD Monitor
        5. 6.3.2.5 Reset (nPOR)
        6. 6.3.2.6 Device Safety Layer
      3. 6.3.3 Output Driver
        1. 6.3.3.1 STANDBY State
        2. 6.3.3.2 ACTIVE State
        3. 6.3.3.3 Overcurrent Protection
        4. 6.3.3.4 Thermal Protection
      4. 6.3.4 Trigger (TRGx) Pins
        1. 6.3.4.1 PWM Based Trigger
        2. 6.3.4.2 Trigger Monitors
      5. 6.3.5 Deploy Parameters
        1. 6.3.5.1 Deploy Delay
      6. 6.3.6 Off-State Diagnostics
        1. 6.3.6.1 Device BIST
        2. 6.3.6.2 Weak Pull-Up Test
        3. 6.3.6.3 Weak Pull-Down Test
        4. 6.3.6.4 High-Side MOSFET RDSON Test
        5. 6.3.6.5 Low-Side MOSFET RDSON Test
        6. 6.3.6.6 IREF Resistance Monitor
        7. 6.3.6.7 VREG Voltage and Capacitance Measurement
        8. 6.3.6.8 Output Load Resistance Monitor
      7. 6.3.7 SPI Watchdog Monitor
      8. 6.3.8 nFAULT/NAD Pin
      9. 6.3.9 Fault Tables
        1. 6.3.9.1 General Device Faults
        2. 6.3.9.2 Off-State Diagnostic Faults
        3. 6.3.9.3 Deployment Faults
    4. 6.4 Device Functional Modes
    5. 6.5 Programming
      1. 6.5.1 SPI Interface
      2. 6.5.2 Addressable SPI
      3. 6.5.3 SPI Error Indicators
      4. 6.5.4 SPI Format
  8. 7 Register Maps
    1. 7.1 STATUS Registers
    2. 7.2 MEAS Registers
    3. 7.3 CONFIG Registers
    4. 7.4 CMD Registers
  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
      3. 8.2.3 Application Performance Plots
      4. 8.2.4 Initialization Setup
        1. 8.2.4.1 Device Initialization - NAD
        2. 8.2.4.2 Device Initialization - Configuration
        3. 8.2.4.3 System Initialization
          1. 8.2.4.3.1 Trigger PWM Pattern Check
          2. 8.2.4.3.2 nFAULT Signalling Check
          3. 8.2.4.3.3 Device Timing Check
          4. 8.2.4.3.4 Secondary Logic Check
          5. 8.2.4.3.5 Off-State Diagnostics - Initial Check
        4. 8.2.4.4 Off-State Diagnostics - Periodic Check
        5. 8.2.4.5 Deployment
          1. 8.2.4.5.1 Targeted Device Deployment
          2. 8.2.4.5.2 Broadcast Deployment
          3. 8.2.4.5.3 Off-State Diagnostics - Post Deployment
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Electrostatic Discharge Caution
    4. 9.4 Glossary
  11. 10Revision History
  12. 11Mechanical Packaging and Orderable Information
    1. 11.1 Package Option Addendum
    2. 11.2 Tape and Reel Information

Package Options

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

6.3.6.2 Weak Pull-Up Test

With the driver disabled (Hi-Z), this test forces a user-configured pull up current (IREF_WK_PU) on OUTL and compares the voltage on OUTL with an internal reference (VREF_WK_PU) with a user configured time out (tWK_PU). The intent is to detect to any signficant, unintended impedance to ground on the output that may impede the deployment function. A test failure results in abortion of off-state diagnostics and is reported as OFF_DIAG_STAT = 0x9 in the STATUS registers.

User can skip this test with register OFF_DIAG_WK_PU_DIS = 0x1.

DRV3901-Q1 Weak Pull-Up Test Diagram Figure 6-12 Weak Pull-Up Test Diagram