L99DZ100G Out1 to Out6 remains High by default.

[prat]

I am working on L99DZ100G IC.

I am able to communicate with L99DZ100G correctly.

But when I check Out1 to Out6 , I am getting 12V by default.

If I make on and off CR4.B.OUT1_HS and CR4.B.OUT1_LS respectively it is working correctly.

If I make off CR4.B.OUT1_HS and CR4.B.OUT1_LS I am getting 12V across OUT1.

My expectations were by default, in off state OUT1 to OUT6 remains low.

Could you please support me in this case?

 

[Billy OWEN]

Hi @prat 

 

This post has been escalated to the ST Online Support Team for additional assistance.  We'll contact you directly.

 

Regards,

Billy

[gi_todero]

Hi Prat, 

in the L99DZ100G, when in the OFF condition, the OUTx (HS/LS for OUT1-6 and HS for OUT7-14) is in high impedance. The output voltage could be high due to some leakage, causing the output voltage to be different from 0V. In any case, the OUTx is not able to sustain any current. This behavior can be observed when the output is in an open load condition.

Thanks. 

Best Regards, 

Giuseppe