SLUAAP4 October   2023 LM2005 , LM2101 , LM2103 , LM2104 , LM2105 , LM5108 , UCC27531 , UCC27710 , UCC44273

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Gate Driver IC Configurations
  6. 3Key Voltage and Current Specifications
    1. 3.1 Voltage Ratings
    2. 3.2 Peak Current
  7. 4Robustness Features
    1. 4.1 Undervoltage Lockout
    2. 4.2 Negative Voltage Handling
    3. 4.3 Cross-Conduction Protection
  8. 5Board Space, Thermal Performance, and Other Considerations
  9. 6Summary
  10. 7References

1 Introduction

Where there is a motor, there is a need for a driver component. Given the amount of driver options available, even from a single manufacturer, choosing the correct driver can be overwhelming. And for each one, there is a long list of parameters. Which specifications or features do you focus on to make your decision?

Driver components can come in the form of gate driver ICs (standalone gate drivers) or motor driver ICs (power switches and drivers integrated into one package). Additionally, both categories can integrate motor control. This application note focuses on design considerations for choosing half-bridge and low-side gate driver ICs to use in DC motor drive applications such as:

  • Brushed and brushless DC (BLDC) motors
  • Stepper motors
  • DC-input servo motors (permanent magnet synchronous motors)
  • Linear motor coil arrays

For more information on motor driver ICs or integrated control gate driver ICs, see Selecting the right level of integration to meet motor design requirements.