SLVSI75 May   2026 DRV8218

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 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 Transient Current Capability
    7. 6.7 Timing Diagrams
    8. 6.8 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 External Components
    4. 7.4 Feature Description
      1. 7.4.1 Control Modes
        1. 7.4.1.1 PWM Control Mode (MODE = 0)
        2. 7.4.1.2 PH/EN Control Mode (MODE = 1)
        3. 7.4.1.3 Independent Half-Bridge Control Mode (MODE = Hi-Z)
      2. 7.4.2 Pin Diagrams
        1. 7.4.2.1 Logic-Level Inputs
        2. 7.4.2.2 Tri-Level Input
      3. 7.4.3 Protection Circuits
        1. 7.4.3.1 Supply Undervoltage Lockout (UVLO)
        2. 7.4.3.2 OUTx Overcurrent Protection (OCP)
        3. 7.4.3.3 Thermal Shutdown (TSD)
    5. 7.5 Device Functional Modes
      1. 7.5.1 Active Mode
      2. 7.5.2 Low-Power Sleep Mode
      3. 7.5.3 Fault Mode
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Full-Bridge Driving
        1. 8.2.1.1 Supply Voltage
        2. 8.2.1.2 Control Interface - Full Bridge
        3. 8.2.1.3 Low-Power Operation
        4. 8.2.1.4 Application Curves
      2. 8.2.2 Half-Bridge Driving
        1. 8.2.2.1 Control Interface
        2. 8.2.2.2 Low-Power Operation
        3. 8.2.2.3 Application Curves
      3. 8.2.3 Parallel Multiple Drivers
      4. 8.2.4 Dual-Coil Relay Driving
        1. 8.2.4.1 Control Interface
        2. 8.2.4.2 Low-Power Operation
        3. 8.2.4.3 Application Curves
      5. 8.2.5 Current Sense
        1. 8.2.5.1 Design Requirements
        2. 8.2.5.2 Detailed Design Procedure
          1. 8.2.5.2.1 Shunt Resistor Sizing
          2. 8.2.5.2.2 RC Filter
    3. 8.3 Current Capability and Thermal Performance
      1. 8.3.1 Power Dissipation and Output Current Capability
    4. 8.4 Power Supply Recommendations
      1. 8.4.1 Bulk Capacitance
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
      2. 8.5.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Mechanical, Packaging, and Orderable Information

8.2.2.3 Application Curves

The figures below show waveform examples of high-side and low-side driving in half-bridge mode. Figure 8-14 and Figure 8-15 show example waveforms of driving a motor uni-directionally using high-side and low-side driving. Figure 8-16 and Figure 8-17 show example waveforms of driving a solenoid using high-side and low-side driving. Figure 8-18 and Figure 8-19 show examples of driving a motor using high-side and low-side driving when the OUTx pins are paralleled together to create a single half bridge.

DRV8218 Driving a motor in half-bridge mode with 50% duty cycle using the high-side FET
A.
Channel 1 = IN2Channel 2 = VOUT2Channel 4 = Motor Current
Figure 8-14 Driving a motor in half-bridge mode with 50% duty cycle using the high-side FET
DRV8218 Driving a solenoid in half-bridge mode using the high-side FET
A.
Channel 1 = IN1Channel 2 = VOUT1Channel 4 = Solenoid Current
Figure 8-16 Driving a solenoid in half-bridge mode using the high-side FET
DRV8218 Driving a motor in parallel half-bridge mode using the high-side FETs
A.
Channel 1 = IN1, IN2 (paralleled) Channel 2 = VVCC Channel 3 = VOUT (OUT1/2 paralleled)
Channel 8 = Motor Current
Figure 8-18 Driving a motor in parallel half-bridge mode using the high-side FETs
DRV8218 Driving a motor in half-bridge mode with 50% duty cycle using the low-side FET
A.
Channel 1 = IN2Channel 2 = VOUT2Channel 4 = Motor Current
Figure 8-15 Driving a motor in half-bridge mode with 50% duty cycle using the low-side FET
DRV8218 Driving a solenoid in half-bridge mode using the low-side FET
A.
Channel 1 = IN1Channel 2 = VOUT1Channel 4 = Solenoid Current
Figure 8-17 Driving a solenoid in half-bridge mode using the low-side FET
DRV8218 Driving a motor in parallel half-bridge mode using the low-side FETs
A.
Channel 1 = IN1, IN2 (paralleled) Channel 5 = VVCC Channel 6 = VOUT (OUT1/2 paralleled)
Channel 8 = Motor Current
Figure 8-19 Driving a motor in parallel half-bridge mode using the low-side FETs