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DRV8873S-Q1EVM: DRV8873S open load detection in active mode with 100% PWM duty

Part Number: DRV8873S-Q1EVM

hi .

i'm using DRV8873S. mode is PH/EN.

when duty of pwm is 50%, open load detection in active mode is good well .

i've checked by reading fault status register & diag status register.

but when duty of pwm is 100% or voltage control, open load detection in active mode is not good.

in this case , fault & diag status register is normal.

How can i check open load detection in active mode with duty 1000% or voltage High in EN signal?

best regards.