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3/6/2017 5:42 AM
 
Hello! I built a BLDC driver circuit with the MP6532 and power MOSFET FDMD85100 (Half Bridge, 100V, 9.9mOhm). Motor voltage 48V. When Power is On, PWM in High, and SLEEP in High, the motor will start after a few seconds. At this time, the motor current rises slowly. When the motor supply voltages below 15V motor run instantly. It seems that the problem in boost circuit. Where to watch the mistake? Thx.
 
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3/8/2017 10:28 PM
 
The error was in the incorrect calculation of the gate resistor (too fast rising). Perhaps, it's reset internal logic. Now the motor start surely at 48V.
 
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HomeHome Products Categ... Products Categ...Motor DriversMotor DriversMP6532 ProblemMP6532 Problem