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DRV2901: Can DRV2901 make output up to 100V?

Chase Jeong
Mastermind 7555 points
Part Number: DRV2901
Other Parts Discussed in Thread: ULC1001-DRV290XEVM, DRV2700, ULC1001, DRV8662, DRV2911

Tool/software:

Dear TI experts,

My customer checks the specification of ultrasonic lens cleaning system.

And their end customer wants to make the output of piezo transducer driver up to 100V.

So I have some questions about it.

1. Can DRV2901 make output voltage up to 100V? (which referred in ULC1001-DRV290XEVM)

2. Can I use DRV2700 with ULC1001 to make Ultrasonic lens cleaning system? (it seems that DRV2700 can make output up to 100V.)

3. Can I use DRV8662 with ULC1001 to make Ultrasonic lens cleaning system? (it seems that DRV8661 also can make output up to 100V.)

4. If No.2 and No.3 are not right, Could you recommend other piezo driver which can use with ULC1001 and make output up to 100V?

Please check this issue. Thanks.

Best regards,

Chase

  • 0
    TI__Expert 3670 points

    Chase, 

    We recommend ULC1001 + DRV2911 (or DRV2901) for ultrasonic cleaning system. 

    To drive up to 100V, yes it is possible for DRV2911 or DRV2901. It requires a LC filter at the output to provide a voltage gain. 

    Neither DRV2700 nor DRV8662 can be paired with ULC1001 for ULC, since their supported bandwidth is less than 20kHz. For ULC applications, the operating frequency is mostly 20-100kHz. 

  • 0 in reply to Hailong Chen
    Mastermind 7555 points

    Dear Hailong,

    Thank you for your support.

    1. 100V means 100Vrms, and is it equal to 200Vpp?

    And output voltage range of DRV2901 is same as DRV2700?

    2. Can DRV2901(DRV2911) make 100V(200Vpp?) output voltage even any voltage value is applied to Vin?

    Or should I apply specific range of VDD to make 100V(200Vpp?) output?

    3. Do you have a specific value or equation(formula) for LC filter to make 100V(200Vpp?) output?

    Please check this issue. Thanks.

    Best regards,

    Chase

  • 0 in reply to Chase Jeong
    TI__Expert 3670 points

    1) I am not sure if the customer needs 100Vpp or 200Vpp, but both DRV2901 and DRV2911 can support 200Vpp with the LC filter gain. 

    2) DRV2901 and DRV2911 can support 200Vpp with the LC filter gain. If the VDD is low, the LC filter gain need to be set high. Basically it is combination effort of VDD and LC filter. 

    3) We don't have the specific equations since the voltage across the piezo also depends the characteristics of the piezo.