Test Procedure for the LB1846MCGEVB Evaluation Board 01/08/2012 For stepping motor control CURRENT PROBE AMPLIFIER1 Osclloscope 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 Power supply1 Power supply2 Logic generator Oscilloscope Current probe1 LB1846MC Evaluation Board Stepping Motor 1/08/2012 Efficiency 12V-1A 5V-0.5A 4 channel 5V-0.2A 1 www.onsemi.com Test Procedure: 1. Connect the test setup as shown above. 2. Set it according to the following guide. [Supply Voltage] VCC (2.5 to 7.5V) : Power Supply for LSI VIN (2.5 to 7.5V) : 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 VCC=5V VIN=5V IN1-IN4=Full-step or Half-step signal OUTPUT * Refer to the following waveform Typical current waveform IN1 IN1 IN2 IN2 IN3 IN3 IN4 IN4 (%) 100 I1 (%) 100 I1 0 -100 100 I2 100 I2 0 -100 1/08/2012 0 -100 0 -100 2 www.onsemi.com Fig full-step waveform Fig half-step waveform For Latch valve control CURRENT PROBE AMPLIFIER1 Osclloscope PROBE INPUT OUTPUT CHANNEL 1 2 3 4 Latch valve Power supply 1 A V - + Function generator Power supply 2 Hz A V CHANNEL 1 - 2 + Table1: Required Equipment Equipment Power supply1 Power supply2 Logic generator Oscilloscope Current probe1 LB1846MC Evaluation Board Efficiency 12V-1A 5V-0.5A 4 channel 3.6V-0.3A 1/08/2012 3 www.onsemi.com Test Procedure: 1. Connect the test setup as shown above. 2. Set it according to the following guide. [Supply Voltage] VCC (2.5 to 7.5V) : Power Supply for LSI VIN (2.5 to 7.5V) : 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 VCC=5V VIN=5V IN1-IN4=Full-step or Half-step signal 1/08/2012 OUTPUT * Refer to the following waveform 4 www.onsemi.com Typical current waveform 1/08/2012 5 www.onsemi.com