Hello,
I have used Webench to design a boost converter circuit using LM3478 that powers a brushless motor. Parameters below:
Input voltage from a battery: 3.5-4.2 V
Output voltage: 13 V
Output current: 3A
You can find the report attached with the schematic used.
It works at low speed, if I increase the speed or add some load it stops. After some seconds, it recovers and starts rotating again.
I could measure ringing, but I am not sure if that is enough to stop working.
Channel 1: Vin / Channel 2: Vout / Channel 3: mosfet gate
I hope you can lead me to where is the fault. Thank you
I have used Webench to design a boost converter circuit using LM3478 that powers a brushless motor. Parameters below:
Input voltage from a battery: 3.5-4.2 V
Output voltage: 13 V
Output current: 3A
You can find the report attached with the schematic used.
It works at low speed, if I increase the speed or add some load it stops. After some seconds, it recovers and starts rotating again.
I could measure ringing, but I am not sure if that is enough to stop working.
Channel 1: Vin / Channel 2: Vout / Channel 3: mosfet gate
I hope you can lead me to where is the fault. Thank you
Attachments
-
1.3 MB Views: 7