Discuss power management solutions. Ask questions and find answers on voltage configurations, short circuit protection, and programming.
Posted on October 21, 2014 at 02:19Gigi: I have a question, measured in workbench Motor Electrical parameters Rs and Ls. I see ST data is used RLC meter measurement frequency at 100 Hz, but the motor is running in the PWM 16K frequency, wheth...
Posted on September 05, 2014 at 03:36I'm finding that the L6474 runs terribly hot even at 1.4 amps . Its on a decent PCB with 20 plates thru tholes a small heatsink (1'' x 1'') on the back and it will rise to 110 C in less than 2 minutes . It is the...
Posted on October 02, 2014 at 22:29I am attempting to run the L6470H discovery kit with the dspin software from a machine with windows xp on it. I was previously able to run it from another machine with xp, I installed the same files but cannot conn...
Posted on September 18, 2014 at 21:39Dear Motor IC Forum: I am using an L6470 to drive a stepper motor attached to a gearbox and am not able to achieve step rates greater than roughly 700 steps/sec with any microstepping setting. The motor gets loud...
Posted on September 26, 2014 at 04:52 This routine to be performed inside the end of conversion ISR,from the function ,we can see that the ext. adc triggeringis disable when the motor state is RUN.So,how can we to trigrer AD conversion for the nex...
Posted on September 28, 2014 at 16:21Gigi: I'm in the Bus Voltage Sensing parameter settings of Workbench when the input voltage is 24V, I am a divider resistor R1 = 51K R2=1K, how to calculate excuse me my Bus voltage sensing network parti...
Posted on September 27, 2014 at 14:10I am currently trying to deploy the STM32 foc library (v3.4 currently, v4.0 available not not tried yet) on a custom designed board. The motor does not startup, and I have tracked down the problem to a polarity m...
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...
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...
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...
