Datasheet

TMC6200 DATASHEET (Rev. 1.04 / 2019-AUG-08) 16
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ENSURE RELIABLE OPERATION
- Use SMD MOSFETs and short interconnections
- Provide sufficient power filtering capacity close to the bridge and close to VS pin
- Tune MOSFET switching slopes (measure switch-on event at MOSFET gate) to be slower than the
MOSFET bulk diode reverse recovery time. This will reduce cross conduction.
- Add optional gate resistors close to MOSFET gate and output capacitors to ensure clean switching
and reliable operation by minimizing ringing. Figure 3.6 shows the options plus some variations.
- Some MOSFETs eliminate reverse recovery charge by integrating a fast diode from source to drain.
Figure 3.7 Ringing of output (green) and Gate voltages (yellow, blue) with DRVSTRENGTH=0
Figure 3.8 Ringing of output (green) and Gate voltages (yellow, blue) with DRVSTRENGTH=2
Figure 3.9 Ringing of output (green) and Gate voltages (yellow, blue) with DRVSTRENGTH=3