SLA7042M/SLA7044M 2W1-2 Phase Excitation/Micro-step Support 2-Phase Stepper Motor Unipolar Driver ICs ■Absolute Maximum Ratings Parameter Motor supply voltage FET Drain-Source voltage Control supply voltage Input voltage Output current Power dissipation Channel temperature Storage temperature Ratings Symbol SLA7042M VCC V DSS VDD VIN IO PD Tch Tstg Units SLA7044M 46 100 7 −0.5 to VDD+0.5 1.2 V V V V A W °C °C 3 4.5 (Without Heatsink) +150 −40 to +150 ■Electrical Characteristics Ratings Parameter Symbol min Control supply current Control supply voltage Input Terminals voltage DATA, CLOCK Input hysteresis and voltage STROBE Input current DC characteristics REF terminal Input voltage Input current Reference voltage selection output voltage FET ON voltage FET Drain-Source voltage FET drain leakage current FET diode forward voltage AC characteristics Chopper off time Switching time Data setup time "A" Data hold time "B" Data pulse time "C" Clock pulse width "D" Stabilization time before strobe "E" Strobe pulse H width "F" 44 SLA7042M/SLA7044M IDD Conditions VDD VIH Conditions VIL Conditions VH Conditions II Conditions VREF Conditions VDISABLE Conditions IREF Conditions V ref Conditions V ref Conditions V ref Conditions V ref Conditions V ref Conditions V ref Conditions V ref Conditions V ref Conditions V DS Conditions VDSS Conditions IDSS Conditions V SD Conditions T OFF Conditions T OFF Conditions T OFF Conditions Tr Conditions Tstg Conditions Tf Conditions tsDAT Conditions thDAT Conditions twDAT Conditions twhCLK Conditions tpsSTB Conditions twhSTB Conditions 4.5 3.5 SLA7042M typ V DD=5.5V 5 max 7 min 5.5 5 4.5 3.5 1.5 0 V DD=5V 0 V DD=5V 1 V DD=5V 5.5 5 1.5 VDD=5V 1 VDD=5V ±1 2.5 0.4 VDD V DD−1 V µA VDD V VDD=5V ±1 ±1 VDD=5V, VI=0 or 5V 0 MODE 0 20 MODE 1 40 MODE 2 55.5 MODE 3 71.4 MODE 4 83 MODE 5 91 MODE 6 100 MODE 7 V DD=5V, VI=0 or 5V 0 MODE 0 20 MODE 1 40 MODE 2 55.5 MODE 3 71.4 MODE 4 83 MODE 5 91 MODE 6 100 MODE 7 0.8 ID=3A, VDD=4.75V 100 100 IDSS=4mA, VDD=5V 4 VDSS=100V, VDD=5V V DSS=100V, VDD=5V 1.2 2.3 ID=1.2A 7 MODE 1, 2 9 MODE 3, 4, 5 11 MODE 6, 7 0.5 VDD=5V, ID=1A 0.7 VDD=5V, ID=1A 0.1 VDD=5V, ID=1A ID=3A 7 MODE 1, 2 9 MODE 3, 4, 5 11 MODE 6, 7 0.5 V DD=5V, ID=1A 0.7 V DD=5V, ID=1A 0.1 V DD=5V, ID=1A V V IDSS=4mA, VDD=5V 4 µA % 1.4 ID=1.2A, VDD=4.75V 75 V 2.5 VDD=5V V DD=5V mA V ±1 V DD=5V, VI=0 or 5V V DD=5V VDD−1 VDD=5.5V 5 Units max 7 VDD=5V VDD=5V, VI=0 or 5V 0.4 SLA7044M typ mA V µs µs 75 Inter-clock 75 Inter-clock 75 Inter-clock Inter-clock 150 150 100 100 ns 100 100 Strobe=L from clock 100 Strobe=L from clock 100 2-Phase Stepper Motor Unipolar Driver ICs (2W1-2 Phase Excitation/Micro-step Support) SLA7042M/SLA7044M OFF time timer (TOFF 3-step switching) Reference voltage Vref b a c 0% 0 0 0 20% 0 1 0 40% 1 0 0 55.5% 1 1 0 71.4% 0 0 1 83% 0 1 1 91% 1 0 1 100% 1 1 1 Reference voltage c b a Vref 0 0 0 0% 0 0 1 20% 0 1 0 40% 0 1 1 55.5% 1 0 0 71.4% 1 0 1 83% 1 1 0 91% 1 1 1 100% Chopper ON Noise filter (2 µ s) Chopper ON Noise filter (2 µ s) Phase COMP Latch a Ph. c c a b c c b Ph. a Reset Shift register b COMP Reset Latch b Shift register Ph. a Ph. Enable GND B Ref B CLOCK B DATA B STROBE B STROBE A DATA A Ref A CLOCK A Enable GND A Rs A PWM Phase Reset Reset OUT B OFF time timer (TOFF 3-step switching) Rs B PWM OUT B VDD B VDD A OUT A OUT A ■Internal Block Diagram ■Output Current Formula IO = K VREF • 3 RS K: Reference voltage setting rate by serial signal (See the internal block diagram) ■Diagram of Standard External Circuit VCC 5V 4 VDDA R1 15 1 8 11 18 VDDB OUT A OUT A OUT B OUT B CLOCK A 5 ENABLE VREF 3 14 R2 CLOCK B REF A REF B SLA7042M SLA7044M STROBE A STROBE B 16 2 13 DATA A C1 GND A GND B 7 12 RS A 9 RS 6 DATA B 17 RS B 10 RS C1 : 500 to 10000pF SLA7042M/SLA7044M 45 2-Phase Stepper Motor Unipolar Driver ICs (2W1-2 Phase Excitation/Micro-step Support) SLA7042M/SLA7044M ■External Dimensions 31±0.2 24.4±0.2 16.4±0.2 φ 3.2±0.15x3.8 4.8±0.2 1.7±0.1 +0.2 1 −0.1 +0.2 1 −0.1 0.55 −0.1 17xP1.68±0.4=28.56±1 4±0.7 17xP1.68±0.4=28.56±1 2.2±0.1 6±0.6 7.5±0.6 ±0.6 +0.2 +0.2 0.65 −0.1 1.6 +0.2 +0.2 0.65 −0.1 9.7 −0.1 R-End 3 ±0.6 ±0.6 4.6 2.45±0.2 Lot No. 0.55 +0.2 −0.1 Part No. (3) 6.7±0.5 9.9±0.2 13±0.2 φ 3.2±0.15 16±0.2 (Unit: mm) 31.3±0.2 1 2 3 • • • • • • • • • • • • 16 17 18 1 2 3 • • • • • • • • • • • • 16 17 18 Forming No. No.871 Forming No. No.872 ■Serial Data Pattern OUT excitation (MODE χ) Phase a b OUT excitation (MODE χ) c Phase CLOCK 0 0 STROBE 0 0 (0%) 0 0 MODE1 (20%) 0 0 MODE2 (40%) 0 0 MODE3 (55.5%) 0 0 MODE4 (71.4%) 0 0 0 0 0 0 0 0 a b c MODE0 DATA MODE5 (83%) MODE6 (91%) MODE7 (100%) Successively output this serial data and set any current. Then, determine the step time of the reference voltage Vref at STROBE signal intervals. 46 SLA7042M/SLA7044M See page 48 for details of PG001M serial signal generator IC for SLA7042M and SLA7044M. 2-Phase Stepper Motor Unipolar Driver ICs (2W1-2 Phase Excitation/Micro-step Support) SLA7042M/SLA7044M ■Current Vector Locus (One step of stepper motor normalized to 90 degrees) A 100 10 1 2 3 Combined Current A Current B vector To rotate the motor, enter serial data as follows: 2W1-2 phase excitation : Vector 1→2→3→4→5→6→7→8→9 ... W1-2 phase excitation : Vector 1→3→5→7→9→.... 1-2 phase excitation : Vector 1→5→9 2-2 phase excitation : Vector 5 or 10 4 5 6 7 20 8 B 0 20 40 55.5 9 B 71.4 83 91 100 1 100% 0% 2 100% 20% 3 91% 40% 4 83% 55.5% 5 71.4% 71.4% 6 55.5% 83% 7 40% 91% 8 20% 100% 9 0% 100% 10 100% 100% A ■Serial Data Sequence Example (2W 1-2 Phase Excitation for CW) 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Sequence 0 1 2 3 4 5 6 7 8 9 DATA-A MODE 0 4 3 2 1 0 1 2 3 4 5 6 7 7 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 7 7 6 5 4 DATA-B MODE 4 5 6 7 7 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 7 7 6 5 4 3 2 1 0 1 2 3 4 A malfunction may occur just after the power (VDD ) is turned on because the internal logic is unstable. Therefore, set the RESET state (REF terminal voltage: V DD−1V to VDD ) after the power is turned on.) ■Operation Current Waveform Examples Stationary waveform A 0 A B 0 B Time Start Torque-up waveform at start A 0 A B 0 B Time Leading phase waveform at acceleration A 0 A B 0 B Time These three types of waveforms can all be set with a serial signal. SLA7042M/SLA7044M 47