Hi K B, Thanks for your interest in TI's products. As of now, we don't have any design that support an output of +/- 400 V. We do have an EVM of our DRV2700 ( DRV2700EVM-HV500 ) with a dynamic output range of 0 to 500 V. Both DRV8662 and DRV2665 meet your driving requirements, but up to 200 Vpp (+/-100 V). Is the +/- 400 V a fixed requirement? Regards, Leo Rodriguez ARP-Haptics
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