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DRV10983-Q1: Performance Deviation in DRV10983-Q1

Boopathiraj G
Prodigy 60 points
Part Number: DRV10983-Q1

I am using DRV10983-Q1 for fuel pump application. When I used EVM module I could able to meet 14 LPH. but the same DRV10983-Q1 with customized PCB is not able to meet the same flow. 

BOM wise everything is same. 

  • 0
    TI__Mastermind 18900 points

    Hello Booparthiraj,

    Can you be more specific how the EVM does meet the specification and the custom PCB doesn't?

    For example, "the motor will attempt to spin up but it will stop pumping fuel for some amount of time (5 seconds) and then repeat the behavior with the custom PCB." Or "90% PWM duty cycle results in a lower output speed when comparing the EVM and PACB". Or "Phase voltage and current is more noisy when comparing the EVM and PCB".

    From you description, we know the components are the same, the schematic of the EVM and the PCB are the same, the pump and fuel (and therefore load) is the same, and the equipment is the same. The only thing that has changed is the layout. We have seen layout affect performance of driving the motor before but we should investigate if we can solve the problem using programming (e.g. EEPROM) before we suggest changing the layout.

    Best,

    -Cole