Test Procedure for the LV8044LPGEVB Evaluation Board Voice Coil Motor Stepping motor Voice Coil Motor Stepping motor VCC (Power Supply) VM (Power Supply) Logic input 1/8/2014 1 www.onsemi.com OUT6A OUT4B OUT4A OUT3B 29 28 27 26 25 24 23 22 21 OUT6B RF6 OUT6A OUT4B RF4 OUT4A OUT3B RF3 OUT3A OUT6B 30 PGND2 OUT3A (Circuit diagram of the evaluation board) 1ohm R3 1ohm R4 R6 1ohm PGND 10uF 10uF C4 + VM6 PWM3/ 20 STEP2 32 IN61 PWM4 19 33 VM6 VM34 18 VM34 VCC 17 VCC STB 16 STB 34 SGND SGND PI1 35 PI1 PI2 36 PI2 LV8044LP IC1 SDATA 15 37 PI3/MO ST 11 OUT1A 40 IN51 RF1 VM12 OUT1B VM12 12 OUT2A 39 IN52 RF2 STEP1 OUT2B STEP1 13 OUT5A 38 VM5 RF5 C3 + SCLK OUT5B VM5 SDATA SCLK 14 PGND1 PI3/MO C2 + 31 IN62 1 2 3 4 5 6 7 8 9 10 C1 + 10uF SW1 SW2 SW5 OUT１A 1ohm OUT１B OUT2A OUT2B SW3 SW4 R1 1ohm R2 1ohm OUT5A OUT5B R5 10uF SW6 SW7 + C5 1/8/2014 2 PWM3/ STEP2 PWM4 ST IN51 IN52 IN61 IN62 1uF www.onsemi.com Evaluation Board Manual [Supply Voltage] VM (2.7 to 5.5V): Power Supply for LSI VCC (2.7 to 5.5V): Power Supply for LSI [Toggle Switch State] Upper Side: High (VCC) Middle: Open, enable to external logic input Lower Side: Low (GND) [Operation Guide] For Stepper motor control 1. Initial Condition Setting: Set the toggle switchs Middle. 2. Motor Connection: Connect the stepper motor between OUT1, OUT2, OUT3 and OUT4. 3. Power Supply: Supply DC voltage to VM, VCC. 4. Condition Setting: Input the serial data signal to ST,SCLK,SDATA, and STB pins according to the purpose (See LV8044LP datasheet). 5. Motor Operation: Input the clock signal to STEP1 pin. Stepper motor load VM=5V,VCC=3V Motor current waveform example Ch1 STEP1 2V/div “STEP1” clock f=2KHz Ch3 IOUT1 100mA/div Ch4 IOUT2 100mA/div T=5ms/div 1/8/2014 3 www.onsemi.com Instruction Manual of Software of LV8044LP Evaluation Explanations of Operation Screen (3) (1) (4) (2) (5) (6) (1) “CH1-2” setting field : the serial signal to drive the stepper motor between CH1 and CH2 is set. (2) “CH3-4” setting field : the serial signal to drive the stepper motor or the DC motor between CH3 and CH4 is set. (3) “CH5-6” setting field : the serial signal to set the energization direction and the reference voltage of CH5 and CH6 is set. (4) “etc” setting field : the serial signals to set the PI output, the MO output and the chopping frequency is set. (5) “IN51-62” setting field : the sequence signal for stepper motor and the parallel signal are set to the pins IN51, IN52,IN61 and IN62 respectively. (6) “EXIT” button : end the program. 1/8/2014 4 www.onsemi.com Explanations of Each Setting (1) “CH1-2” setting This is set when the stepper motor is driven between CH1 and CH2. - - Excitation mode (2-phase excitation / 1-2phase excitation full torque / 1-2 phase excitation / 4W1-2phase excitation ). Internal reference voltage (0.200V to 0.066V) When above conditions are selected, the data transfer of each setting values are executed by clicking the “Send serial code” box. - In the same way, Excitation direction (CW / CCW) Step hold (Cancel / Hold) Counter reset (Reset / Cancel) Output enable (OFF / ON) When above condition is selected, the data transfer is executed by clicking the “Send serial code” box. 1/8/2014 5 www.onsemi.com Also, when the stepper motor is driven, the frequency of the reference clock signal “STEP1” is set. And, it is turned on / off by using the “STEP1 ON/OFF” button. →When the “STEP1” signal is output, the “STEP1 ON/OFF” button turns red in color. 1/8/2014 6 www.onsemi.com (2) ‘CH3-4’ setting When the stepper motor is driven between CH3 and CH4, the “Microstep “ in the alternative of “Saturation/Microstep” is selected, the data transfer is executed by clicking “Send serial code”. The setting method that follow is basically the same as (1). (3) ‘CH3-4’ setting When the DC motor is driven between CH3 and CH4, the “PWM “ in the alternative of 1/8/2014 7 www.onsemi.com “Saturation/Microstep” is selected, the data transfer is executed by clicking “Send serial code”. - Drive polarity (standby / forward / reverse / brake) - PWM Decay type (brake / standby) The serial signal to set in the above condition is set. Also, “Frequency” and “PWMduty” of the PWM signal are set to the pins “PWM3 STEP2” and “PWM4”. Then, it is turned on/off by using the buttons “PWM3ON/OFF” and “PWM4 ON/OFF”. →When the “PWM” signal is output, the buttons “PWM3ON/OFF” and “PWM4 ON/OFF” of output turns red in color. (4) “CH5-6” setting field : The setting method here is nearly the same as (3). (5) “etc” setting field : - PI output (OFF/ON) - PI3 / MO output switching (PI3out / MO) - MO output ch selection (1/2ch / 3/4ch) - MO output position (Initial position / 1-2phase position) - Chopping frequency (200KHz to 65KHz) The setting is as below. 1/8/2014 8 www.onsemi.com (6) “IN51-62” setting field : When the stepper motor is driven between CH-5 and CH6, the signal is input to the pins IN51, IN52, IN61 and IN62 respectively. ● “1-2 phase excitation Forward” and “1-2phase excitation Reverse” The drive of Forward and Reverse (per cycle) of 1-2phase excitation is set. →The drive signal of per cycle is as below. 1/8/2014 9 www.onsemi.com 【In case of 1-2phase excitation】 1 cycle FREQ Control board reference clock （generated in the control board） Control board output signal ↓ Input signal for LV8044LP IN51 H H L L L L L H IN52 L L L H H H L L IN61 L H H H L L L L IN62 L L L L L H H H ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ① ⑦ ⑧ ② ③ ④ ⑤ ⑥ IOUT1 Motor current IOUT2 → The relation of IOUT1 and IOUT2 inverts at reversal. ● “2 phase excitation Forward” and “2phase excitation Reverse” The drive of Forward and Reverse (per cycle) of 2phase excitation is set. →The drive signal of per cycle is as below. 1/8/2014 10 www.onsemi.com ⑦ 【In case of 2phase excitation】 1 cycle FREQ Control board reference clock （generated in the control board） Control board output signal ↓ Input signal for LV8044LP IN51 H L L H IN52 L H H L IN61 H H L L IN62 L L H H ② ④ ⑥ ⑧ ⑥ ⑧ ② ④ IOUT1 Motor current IOUT2 → The relation of IOUT1 and IOUT2 inverts at reversal. ●Drive Frequency The Pulse rate of the stepper motor is set. ( “FREQ” of above timing chart is set.) 1/8/2014 11 www.onsemi.com ⑥ ●Parallel Signal Setting The input parallel signal to the pins IN51, IN52, IN61 and IN62 respectively can be set. That’s the end of the excitation relating to the setting of “Main Screen”. 3) Connection with LV8044 evaluation board & control board USB cable Control board Evaluation board *)Please supply voltage for actuator from external power source to VM12,VM34,VM5 and VM6 pins. 1/8/2014 12 www.onsemi.com