Wireless Charging solution Wiki
This Topic is used for Wireless Charging solution 1.Mcu C drive code: GitHub - STMicroelectronics/STWirelessCharging-C-Drivers: Standard C platform-independent drivers for wireless charging ICs
Forum Posts
Torque limitation in PMSM FOC
Posted on September 24, 2014 at 10:26Hi,I'm controlling my PMSM at zero speed. While I'm trying to move its shaft I don't want my motor to generate its maximum torque to resist my movement but the limited one. Everything went fine with classic contr...
Efficient DC motor control
Posted on September 28, 2014 at 19:15Hi everyone,I have to develop a PMDC motor control. The main requirement is the maximum possible efficiency. Since I'm interested in a one way rotational direction, I thought that a low-side control (chopper) cou...
L6472 / L6474
Posted on August 27, 2013 at 10:05I am experiencing problem with the current regulation of the L6472. We made 2 series of boards, one was fitted with L6474s, the other one with L6472s. The board has 8 channels, supply voltage is 24V / 3.3V, timing p...
EVAL-L9942 interface problem
Posted on September 18, 2014 at 17:37Hello!I bought 3 Eval-L9942 boards. I connected supply voltage (5V). Enable (connect to 5V) and a step clock (5V. 100Hz). The VS supply is 12V.The motor i have connected does not move. All outputs are at 12V cons...
stepper motor ramp profile using timer 1 output compare
Posted on August 29, 2014 at 03:19timer 1 output compare to generate Step output for stepper motorI am using timer1 channel 1 as output compare, to generate a pulse of variable period.Desire output – In the beginning the output remain low for 4 ms(...
L6470 acceleration problem using sensor seek commands
Posted on August 21, 2014 at 22:41after performing a few sensor seeks using the ReleaseSW() and GoUntil() commands i have noticed that they do not use the same acceleration/deceleration. GoUntil() uses the programmed values, ReleaseSW() uses somethi...
Implementing motion profile multiple L6470 chips
Posted on September 15, 2014 at 16:23I'm investigating using the L6470 for an multi-axis application. Please let me now if it is possible using SPI to position multiple motors according to a motion profile/position table at constant speed. i.e. impl...
Can't reliably sense stalling using L6470 chip
Posted on October 22, 2013 at 20:37I've been quite successful at controlling the L6470 stepper driver chip from my embedded ARM processor for all features other than the sensorless stall detection feature. I'm hoping that I'm missing something and t...
L6480 cannot switch on my 170 nC transistors
Posted on September 06, 2014 at 14:57Greetings, I am doing a test series of stepper drivers with L6480 for furnace rotation control. There seems to be a problem with the device. The circuit is a copy of Eval 6480. SPI is up and functional, every re...
GoTo(ABS_POS) error during motor running
Posted on September 03, 2014 at 09:59Hello!In my application I send GoTo(ABS_POS) commands when stepper motor is running at constant speed, when BUSY flag is high, so I'm sure that the target speed is reached. And everything is going well most of ti...
