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Visitor II
December 4, 2025
Question

Recommended Voltage Margin für STSPIN32G0

Hello ST community

What voltage margin would you suggest if using the motor STSPIN32G0A2 controller IC ? The supply voltage of the IC is rated from 15-45V. Is it safe to supply it with 36V and connect a BLDC motor to it? I am scared that the IC may be damaged due to voltage transients. This question may sound a bit silly, but I need some opinions.

The motor is a 150W maxon EC 60 flat type, and the product is intended for the consumer industry. A gear with a ratio of 1:26 is connected and the motor and it is used to propel a machine (size of a vacuum cleaner) that is moving with a constant speed on the ground. The power supply is a mean well RPS-300-36-C type and the PCB also features a bulk capacitor of 2200 uF. The schematic and layout is similar to the STEVAL SPIN3202.

Thank you for sharing your opinions.

 

 

 

1 reply

GMA
ST Technical Moderator
December 10, 2025

Hello @imhofre21,

Usually a 50% margin is used, but it could depend on Motor transient characteristics.

If you agree with the answer, please accept it by clicking on 'Best answer'.Best regards.GMA