Test Procedure for the LV8548MCGEVB Evaluation Board For stepper motor control CURRENT PROBE AMPLIFIER1 Osclloscope PROBE INPUT OUTPUT CHANNEL 1 2 3 4 Stepping Motor Power supply 1 A V - + Logic generator LV8548MC Power supply 2 A V CHANNEL 1 - 2 3 4 + Table1: Required Equipment Equipment Power supply1 Power supply2 Logic generator Oscilloscope Current probe1 LV8548MC Evaluation Board Stepper Motor 11/13/2014 1 Efficiency 25V-3A 5V-0.5A 4 channel 25V-2A www.onsemi.com Test Procedure: 1. Connect the test setup as shown above. 2. Set it according to the following guide. [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] 1. Initial Condition Setting: Set “Open” the toggle switches IN1-IN4. 2. Power Supply: Supply DC voltage to VCC and VIN. 3. Motor Operation: Input the signal which is in condition to want to operate Full-step , Half-step into IN1-IN4. 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 waveform IN1-IN4=Full-step or Half-step signal Typical current waveform IN1 IN1 IN2 IN2 IN3 IN3 IN4 IN4 (%) 100 I1 (%) 100 I1 0 -100 100 I2 100 I2 0 -100 11/13/2014 0 -100 0 -100 2 www.onsemi.com LV8548M Full-Step VCC=12V 200pps LV8548M Half-Step VCC=12V 200pps T=5ms/div IOUT1 500mA/div 11/13/2014 T=5ms/div IOUT1 500mA/div VOUT1 10V/div VOUT1 10V/div IN1 5V/div IN2 5V/div IN1 5V/div IN2 5V/div 3 www.onsemi.com For DC motor control CURRENT PROBE AMPLIFIER1 Osclloscope PROBE INPUT OUTPUT CHANNEL 1 2 3 4 DC Motor Power supply 1 A V - + Function generator Power supply 2 Hz A V CHANNEL 1 - 2 + Table3: Required Equipment Equipment Power supply1 Power supply2 Function generator Oscilloscope Current probe LV8548MC Evaluation Board DC Motor 11/13/2014 4 Efficiency 25V-3A 5V-0.5A 200kHz 4 channel 25V-2A www.onsemi.com Test Procedure: 1. Connect the test setup as shown above. 2. Set it according to the following guide. [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] 1. Initial Condition Setting: Set “Open” the toggle switches IN1-IN4. 2. Power Supply: Supply DC voltage to VCC and VIN. 3. Motor Operation: Set IN1, IN2, IN3, and IN4 terminals according to the purpose. 3. Check the IN2, OUT1, and OUT2 terminal voltage at scope CH1, CH2, and CH3, and the output current waveform at scope CH4. 4. Connected in the same way as the 1ch side and measure the 2ch side . Table4: Desired Results INPUT OUTPUT VCC=12V VIN=5V * Refer to the following waveform IN1=High IN2=10KHz (Duty50%) T=20µs/div IOUT1 500mA/div OUT2 10V/div OUT1 10V/di IN2 5V/div 11/13/2014 5 www.onsemi.com DCM output control logic Input Output IN2 IN3 IN4 OUT1 OUT2 OUT3 OUT4 L L L L OFF OFF OFF OFF L L OFF OFF H L H L L H L H H H L L L 11/13/2014 Remarks IN1 Stand-by 1CH Forward Reverse Brake L OFF H L H L L H L H H H L L 6 Stand-by OFF Stand-by 2CH Forward Reverse Brake www.onsemi.com