SLOSE83 March   2023 DRV8952

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and 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
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1  Overview
    2. 7.2  Functional Block Diagram
    3. 7.3  Feature Description
    4. 7.4  Independent Half-bridge Operation
    5. 7.5  Current Sensing and Regulation
      1. 7.5.1 Current Sensing and Feedback
      2. 7.5.2 Current Sensing with External Resistor
      3. 7.5.3 Current Regulation
    6. 7.6  Charge Pump
    7. 7.7  Linear Voltage Regulator
    8. 7.8  VCC Voltage Supply
    9. 7.9  Logic Level Pin Diagram
    10. 7.10 Protection Circuits
      1. 7.10.1 VM Undervoltage Lockout (UVLO)
      2. 7.10.2 VCP Undervoltage Lockout (CPUV)
      3. 7.10.3 Logic Supply Power on Reset (POR)
      4. 7.10.4 Overcurrent Protection (OCP)
      5. 7.10.5 Thermal Shutdown (OTSD)
      6. 7.10.6 nFAULT Output
      7. 7.10.7 Fault Condition Summary
    11. 7.11 Device Functional Modes
      1. 7.11.1 Sleep Mode (nSLEEP = 0)
      2. 7.11.2 Operating Mode
      3. 7.11.3 nSLEEP Reset Pulse
      4. 7.11.4 Functional Modes Summary
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Driving Solenoid Loads
        1. 8.1.1.1 Solenoid Driver Typical Application
        2. 8.1.1.2 Thermal Calculations
          1. 8.1.1.2.1 Power Loss Calculations
          2. 8.1.1.2.2 Junction Temperature Estimation
        3. 8.1.1.3 Application Performance Plots
      2. 8.1.2 Driving Stepper Motors
        1. 8.1.2.1 Stepper Driver Typical Application
        2. 8.1.2.2 Power Loss Calculations
        3. 8.1.2.3 Junction Temperature Estimation
      3. 8.1.3 Driving Brushed-DC Motors
        1. 8.1.3.1 Brushed-DC Driver Typical Application
        2. 8.1.3.2 Power Loss Calculation
        3. 8.1.3.3 Junction Temperature Estimation
        4. 8.1.3.4 Driving Single Brushed-DC Motor
      4. 8.1.4 Driving Thermoelectric Coolers (TEC)
      5. 8.1.5 Driving Brushless DC Motors
  9. 9 Package Thermal Considerations
    1. 9.1 DDW Package
      1. 9.1.1 Thermal Performance
        1. 9.1.1.1 Steady-State Thermal Performance
        2. 9.1.1.2 Transient Thermal Performance
  10. 10Power Supply Recommendations
    1. 10.1 Bulk Capacitance
    2. 10.2 Power Supplies
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 PCB Material Recommendation
    3. 11.3 Thermal Considerations
  12. 12Device and Documentation Support
    1. 12.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information
    1. 13.1 Tape and Reel Information

Package Options

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

7.1 Overview

The DRV8952 is a four-channel half-bridge driver that operates from 4.5 V to 55 V and supports a wide range of load currents for various types of loads. The device integrates four half-bridge output power stages. The device integrates a charge pump regulator to support efficient high-side N-channel MOSFETs and 100% duty cycle operation. The DRV8952 can operate from a single power supply input (VM). Alternatively, the VCC pin can be connected to a second power supply to provide power to the internal logic blocks when using the DDW package. The nSLEEP pin provides an ultra-low power mode to minimize current draw during system inactivity.

The device is available in two packages - a 44-pin HTSSOP (DDW) package; and another 28-pin HTSSOP (PWP) package. The DDW package provides up to 5-A current per output, whereas the PWP package can deliver up to 4-A current per output. The DRV8952 DDW package is pin-to-pin compatible with the DRV8962, and the DRV8952 PWP package is pin-to-pin compatible with the DRV8955. The actual current that can be delivered depends on the ambient temperature, supply voltage, and PCB thermal design.

The DRV8952 DDW package provides current sense outputs. The IPROPI pins source a small current that is proportional to the current in the high-side MOSFETs. The current from the IPROPI pins can be converted to a proportional voltage using an external resistor (RIPROPI). The integrated current sensing allows the DRV8952 to limit the output current with a fixed off-time PWM chopping scheme and provide load information to the external controller to detect changes in load. The sense accuracy of the IPROPI output is -3.5%/+5% for 40% to 100% of rated current. External power sense resistors can also be connected if higher accuracy sensing is required. The current regulation level can be configured during operation through the VREF pin to limit the load current according to the system demands.

A variety of integrated protection features protect the device in the case of a system fault. These include undervoltage lockout (UVLO), charge pump undervoltage (CPUV), over current protection (OCP), and over temperature shutdown (OTSD). Fault conditions are indicated on the nFAULT pin.