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DRV8306: FGOUT Jitter spec and accuracy of FGOUT signal

Part Number: DRV8306

Hi team,

Customer found jitters on PWM signals from FGOUT and has questions regarding this.

1. What factors does DRV8306 generates jitter?

2. What accuracy would error be calculated by FGOUT of DRV8306? max, typ, min?

Best regards,

Hideki

  • Hi Hideki-san,

    1) Smart Gate Drive devices use input synchronization to the internal oscillator, so jitter at the gate drive outputs can be anywhere from 0-50ns due to 20MHz internal oscillator frequency. 

    2) FGOUT error is negligible based on Hall inputs, there is no delay introduced from XOR of the Hall inputs. 

    Thanks,
    Aaron