About GHoll.1

GHoll.1 · 2020-07-03

I have two questions about the STSPIN250:What is the overcurrent threshold? It's not listed anywhere in the datasheetAfter what interval is the overcurrent threshold triggered? The datasheet mentiones a Toff time, but that's for the PWM current contr...

GHoll.1 · 2020-07-23

Hi @Cristiana SCARAMEL , I did measurements on the PH and STBY/REST pins, but there is no change on those channels.The voltage inversion what you can see in the oscilloscope screenshot, is the back EMF because of the sudden stop of the motor. So for...

GHoll.1 · 2020-07-13

Hi @Cristiana SCARAMEL ,The FAULT indication happens when a 3VDC motor is started, after powerup.See below the oscilloscope image. The blue line is the FAULT led (which triggers when pulled low). The yellow line is the sense resistor. As you can see...

GHoll.1 · 2020-07-08

If I use a 2 ohm resistor, I measure a voltage drop over the H-bridge of +/- 1V. So my power supply needs to have at least 6V in order to have 2.5A current. A voltage drop of 1V with 2.5A is a power loss of 2.5W. I think you are right that it's a the...

GHoll.1 · 2020-07-06

Hi Christiana,thanks for your answer. I overlooked that paramater, so thats clear now.However, why do I get a fault indication when I have a current a little above 2.5A? I am using the X-NUCLEO-IHM13A1 evaluation board, with a 5V reference. For load...

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STSPIN250 overcurrent

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