SLVAF84 September   2021 DRV8311 , DRV8312 , DRV8313 , DRV8316 , DRV8332 , MCT8316Z

 

  1.   Trademarks
  2. 1Introduction
  3. 2Direction of Current Into or Out of the Phase
    1. 2.1 INHx Rising, INLx Falling, Current is Going Out of the Phase
    2. 2.2 INHx Falling, INLx Rising, Current is Going Out of the Phase
    3. 2.3 INHx Rising, INLx Falling, Current is Going Into the Phase
    4. 2.4 INHx Falling, INLx Rising, Current is Going Into the Phase
  4. 3Additional Dead Time From the MCU PWM Inputs
  5. 4Summary of Delay Times in Integrated MOSFET Drivers
  6. 5Delay Compensation to Minimize Duty Cycle Distortion

4 Summary of Delay Times in Integrated MOSFET Drivers

Table 4-1 Summary of Delay Times in Integrated MOSFET Drivers Depending on Inputs, Inserted MCU Dead Time, and Output Current Direction
OUTx Current Direction INHx INLx Propagation Delay (tPD) Dead Time (tdead) Inserted MCU Dead Time (tdead(MCU))
tdead(MCU) < tdead tdead(MCU) > tdead
Out of OUTx Rising Falling Typical Typical Output dead time = tdead Output dead time = tdead(MCU)
Falling Rising Smaller than typical Smaller than typical Output dead time < tdead Output dead time < tdead(MCU)
Into OUTx Rising Falling Smaller than typical Smaller than typical Output dead time < tdead Output dead time < tdead(MCU)
Falling Rising Typical Typical Output dead time = tdead Output dead time = tdead(MCU)