Hey Ray,
Is it a Piezo speaker? Those are highly capacitive loads and I think it will depend on the capacitance of the speakers. If it's a Piezo I recommend a piezo driver: https://www.ti.com/product/DRV2700 or use this design tool to pick one: https…
Yes, it could be better. It depends on the piezo speaker capacitance. LM48560/LM48580 would work for ~1-2uF capacitance. Max output is only 30Vpp but the power is limited and when you drive capacitive loads like piezo speakers, the needed current increases…
Hi Yaita,
We have an excel table for calculating these valules: www.ti.com/.../DRV8662-2665-2667_DESIGN_TOOL . Let us know if you have additional questions.
Hi Kelly-san, My customer considers to use DRV2667 with 12Vpp piezo actuator and VBST is calculated 11V (==v_actuator/2+5) by the following calculation tool. www.ti.com/.../DRV8662-2665-2667_DESIGN_TOOL I believe we should set VBST to 15V and limiting digital…
Hi Griffin-san,
Thank you for your reply.
But I could not access following URL which you suggseted for design guide.
www.ti.com/.../drv8662-2665-2667_design_tool
Could you attach this tool ?
Best Regards,
Machida