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DRV8302: High Voltage Design

dannytt dannytt
Prodigy 30 points
Part Number: DRV8302
Other Parts Discussed in Thread: LM5107, DRV8711

I need design a 200 V DC BLDC controller, i plan use DRV8302. But it max voltage is 60V only how can i bypass the voltage.

  • 0
    TI__Guru** 114905 points
    Hi Dannytt,

    You cannot bypass the voltage. Please look at the www.ti.com/.../TMDSHVMTRPFCKIT kit.

    You will need a device that can translate low voltages to high voltages (an example is the LM5107 although it does not operate at 200V).
  • 0 in reply to Rick Duncan
    Prodigy 30 points

    Thx first.

    my original design wants use drv8302 as the bldc controller, but it PVDD1 max voltage is 60V. is there any method or circuit make work @200~400V DC?

  • 0 in reply to dannytt dannytt
    TI__Guru** 114905 points
    Hi dannytt,

    The DRV8302 cannot operate at 200 to 400V DC. The signals can be converted to control half bridge drivers.

    An example of circuitry that could be used to increase the operational range can be found here: www.ti.com/.../TIDA-01227 This reference design allows the 60V DRV8711 to operate at higher voltages.

    Additional circuitry is required to provide proper feedback to the DRV8711. The circuitry creates voltages into and out of the DRV8711 within operation voltage range.

    When creating the circuit for the DRV8302, the high side VDS monitors must be disabled. There could be other unintended results when adding the additional circuitry in series with the half bridge drivers.