SLVAFG1 September   2022 DRV8329

 

  1.   Abstract
  2.   Trademarks
  3. 1DRV8329 Key Features
  4. 2Power Tool Requirements
    1. 2.1 Performance
    2. 2.2 Robustness
    3. 2.3 Scalability
      1. 2.3.1 Battery Pack Quality
      2. 2.3.2 Battery Pack Voltage
  5. 3Summary

Scalability

A high-power motor driver system should be designed for the maximum voltage and current provided from the lithium-ion battery pack. In power tool applications, a lithium ion battery can provide up to hundreds of amps of instantaneous current as a function of the battery pack impedance. It is common for power tool designers to optimize their design so it can scale across multiple different battery pack architectures with varying architectures of cells. Battery packs with cells in series affect the supply voltage, and battery packs with cells in parallel affect the battery pack capacity and effective impedance. A robust motor driver such as the DRV8329 assures suitable MOSFET gate drive voltages across all possible load and battery conditions.