Test Procedure for the LV8413GPGEVB Evaluation Board “VCC” Power Supply C2:VCC Bypass capacitor （Electrolytic capacitor） 1μF “VM” Power Supply C1:VM Bypass capacitor （Electrolytic capacitor） 10μF M Function generator PGND PGND 9 + VM 10 13 PI OUT1 8 OUT1 INA 14 I NA OUT2 7 OUT2 IN4 15 I N4 OUT3 6 OUT3 OUT4 5 OUT4 IN2 3 VM 4 PGND 16 I N3 2 I N1 IC1 1 I N2 IN3 Ｌ Ｖ ８４１３ ＧＰ IN1 PI 1/8/2014 VCC 11 SGND 12 C1 1uF + C2 10uF VM VCC SGND (Circuit diagram of the evaluation board) 1 www.onsemi.com Supply Voltage: • • VM (2.5 to 5.5V): Motor power supply voltage for IC VCC(2.5 to 5.5V): Control power supply voltage for IC Toggle Switch State: • • • Upper Side: High (VCC) Middle: Open, enable to external logic input Lower Side: Low (GND) Testing Procedure: 1. Connect a stepper motor with OUT1, OUT2, OUT3 and OUT4. 2. Connect the motor power supply with the terminal VM, the control power supply with the terminal VCC. Connect the GND line with the terminal PGND and SGND. 3. Stepper motor drives it in 2phase excitation or 1-2 phase excitation by inputting a signal such as follows into IN1, IN2, IN3 and IN4. 4. Check the stepper motor is rotating. 5. Check the waveform of the output voltage and current. (Please refer to the following waveform example). IN1 L H H L L H H L L IN2 L L L H H L L H H IN3 L L H H L L H H L IN4 L H L L H H L L H OUT1 OFF H H L L H H L L OUT2 OFF L L H H L L H H OUT3 OFF L H H L L H H L OUT4 OFF H L L H H L L H Input signal Output voltage IOUT1 Output current IOUT2 2 phase excitation timing chart 1/8/2014 2 www.onsemi.com IN1 L H H H L L L L L H H H L L IN2 L L L L L H H H L L L L L H IN3 L L L H H H L L L L L H H H IN4 L H L L L L L H H H L L L L OUT1 OFF H H H OFF L L L OFF H H H OFF L OUT2 OFF L L L OFF H H H OFF L L L OFF H OUT3 OFF L OFF H H H OFF L L L OFF H H H OUT4 OFF H OFF L L L OFF H H H OFF L L L Input signal Output voltage IOUT1 Output current IOUT2 1-2 phase excitation timing chart • Stepper motor driving waveform example VCC=3.3V,VM=5V 2phase excitation, 1000pps 1/8/2014 Ch1 IN1 5V/div Ch1 IN1 5V/div Ch2 IN2 5V/div Ch2 IN2 5V/div Ch3 VOUT1 5V/div Ch3 VOUT1 5V/div Ch4 IOUT1 100mA/div Ch4 IOUT1 100mA/div T=1ms/div VCC=3.3V,VM=5V 1-2phase excitation, 2000pps 3 T=1ms/div www.onsemi.com