SLVSNG3 August   2026 DRV8374-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Device Comparison Table
  7. 6 Pin Configuration and Functions
  8. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings AUTO
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 SPI Timing Requirements
    7. 7.7 SPI Timings
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Output Stage
      2. 8.3.2  Control Modes
        1. 8.3.2.1 3x PWM Mode (PWM_MODE = 10b or 11b or MODE_SR Pin is Connected to GVDD with RMODE or to GVDD)
      3. 8.3.3  Device Interface Modes
        1. 8.3.3.1 Serial Peripheral Interface (SPI)
        2. 8.3.3.2 Hardware Interface
      4. 8.3.4  GVDD Linear Voltage Regulator
      5. 8.3.5  Charge Pump
      6. 8.3.6  Slew Rate Control
      7. 8.3.7  Cross Conduction (Dead Time)
      8. 8.3.8  Propagation Delay
      9. 8.3.9  Pin Diagrams
        1. 8.3.9.1 Logic Level Input Pin (Internal Pulldown)
        2. 8.3.9.2 Logic Level Input Pin (Internal Pullup)
        3. 8.3.9.3 Open Drain Pin
        4. 8.3.9.4 Push Pull Pin
        5. 8.3.9.5 Four Level Input Pin
      10. 8.3.10 Current Sense Amplifiers
        1. 8.3.10.1 Current Sense Amplifier Operation (23-pin variant)
        2. 8.3.10.2 Current Sense Amplifier Operation (29-pin variant)
      11. 8.3.11 Active Demagnetization
        1. 8.3.11.1 Automatic Synchronous Rectification Mode (ASR Mode)
          1. 8.3.11.1.1 Automatic Synchronous Rectification in Commutation
          2. 8.3.11.1.2 Automatic Synchronous Rectification in PWM Mode
        2. 8.3.11.2 Automatic Asynchronous Rectification Mode (AAR Mode)
      12. 8.3.12 Cycle-by-Cycle Current Limit
        1. 8.3.12.1 Cycle by Cycle Current Limit with 100% Duty Cycle Input
      13. 8.3.13 Protections
        1. 8.3.13.1 VM Supply Undervoltage Lockout (RESET)
        2. 8.3.13.2 GVDD Undervoltage Lockout (GVDD_UV)
        3. 8.3.13.3 VCP Charge Pump Undervoltage Lockout (CPUV)
        4. 8.3.13.4 Over Voltage Protections (OV)
        5. 8.3.13.5 Overcurrent Protection (OCP)
          1. 8.3.13.5.1 OCP Latched Shutdown (OCP_MODE = 00b)
          2. 8.3.13.5.2 OCP Automatic Retry (OCP_MODE = 01b)
          3. 8.3.13.5.3 OCP Report Only (OCP_MODE = 10b)
          4. 8.3.13.5.4 OCP Disabled (OCP_MODE = 11b)
        6. 8.3.13.6 Thermal Warning (OTW)
        7. 8.3.13.7 Thermal Shutdown (OTS)
    4. 8.4 Device Functional Modes
      1. 8.4.1 Functional Modes
        1. 8.4.1.1 Sleep Mode
        2. 8.4.1.2 Operating Mode
        3. 8.4.1.3 Fault Reset (CLR_FLT or nSLEEP Reset Pulse)
      2. 8.4.2 DRVOFF functionality
    5. 8.5 SPI Communication
      1. 8.5.1 Programming
        1. 8.5.1.1 SPI Format
  10. 9 Register Map
    1. 9.1 CONTROL Registers
    2. 9.2 STATUS Registers
  11. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Power Supply Recommendations
      1. 10.2.1 Bulk Capacitance
    3. 10.3 Layout
      1. 10.3.1 Layout Guidelines
      2. 10.3.2 Layout Example
      3. 10.3.3 Thermal Considerations
        1. 10.3.3.1 Power Dissipation
  12. 11Device and Documentation Support
    1. 11.1 Documentation Support
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  13. 12Mechanical, Packaging, and Orderable Information

8.3.5 Charge Pump

Because the output stages use N-channel FETs, the device requires a gate-drive voltage higher than the VM power supply to enhance the high-side FETs fully. The integrates a charge-pump circuit that generates a voltage above the VM supply for this purpose.

The charge pump requires two external capacitors for operation. See the block diagram, pin descriptions and see section (Section 8.3 ) for details on these capacitors (value, connection, and so forth).

The charge pump shuts down when nSLEEP is low or during an over temperature shutdown.

DRV8374-Q1 Charge Pump Figure 8-5 Charge Pump