LV8549MCGEVB ON Semiconductor

Test Procedure for the LV8549MCGEVB Evaluation Board For Stepper Motor Control CURRENT PROBE Osclloscope AMPLIFIER 1 PROBE INPUT OUTPUT CHANNEL 1 2 3 4 Stepping Motor Power supply 1 A V - + Logic generator Power supply 2 A V CHANNEL 1 2 3 4 - + Table1: Required Equipment Equipment Efficiency Power supply1 25V-3A Power supply2 5V-0.5A Logic generator 200kHz Oscilloscope 4 channel Current probe1 - LV8549MC Evaluation Board - Stepper Motor 25V-2A 11/8/2016 1 www.onsemi.com Test Procedure: 1. Connect the test setup as shown above. 2. Set it according to the following specifications: Supply Voltage VCC (4 to 16V) : Power Supply for LSI VIN (1.8 to 5.5V) : Logic High voltage for toggle switch Toggle Switch State Upper Side: High (VIN) Middle: Open, enable to external logic input Lower Side: Low (GND) Operation Guide Initial Condition Setting: Set Open the toggle switches ENA, IN1 and IN2. Power Supply: Supply DC voltage to VCC and VIN. Ready for Operation from Standby State: Turn High the ENA terminal toggle switch. Motor Operation: Input the signal which is in condition to want to operate into IN1 and IN2. 3. Check the IN1 , IN2 and OUT1 terminal voltage at scope CH1 , CH2 and CH3, and the output current waveform at scope CH4. Table2: Desired Results INPUT OUTPUT VCC=12V VIN=5V * Refer to the following ENA=H waveform IN1 , IN2=Full-step signal 11/8/2016 2 www.onsemi.com