Skip to main content
SZizi
SZizi
Visitor II
August 28, 2018
Question

L6207Q Vref maximum level

  • August 28, 2018
  • 1 reply
  • 513 views

Hi all,

I have a question about the full bridge driver L6207Q.

About the VREF signal, in my design I am going to drive it with a DAC with maximum output voltage above 1V.

I would avoid to insert an attenuation stage between DAC output and L6507Q VREF input.

Is advisable and , if yes, how much is possible​ to overcome the recommended maximum VREF level of 0,5V suggested in page 9 of AN1762?

My goal value for VREF max is around 0,7 - 0,75V. What kind of drawbacks I would face in this case?

Thanks for your attention,

Sergio

This topic has been closed for replies.

1 reply

Enrico Poli
Enrico Poli
ST Employee
September 7, 2018

Hi Sergio,

the higher is the reference voltage, the bigger will be the power dissipation in the shunt resistors of the application . The 0.5 V indicated in the AN usually gives a good trade-off between power dissipation and sensing precision. However, your target value is still in a good region :smiling_face_with_smiling_eyes:

Regards

Enrico

Terms & ConditionsAccessibility statement