SLA7024M

SLA7027MU SANKEN | Alldatasheet

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20 SLA7027MU/SLA7024M/SLA7026M

Parameter Symbol Ratings UnitsSLA7027MU SLA7024M SLA7026M Motor supply voltage V CC 46 V FET Drain-Source voltage V DSS 100 V Control supply voltage V S 46 V TTL input voltage V IN 7V Reference voltage V REF 2V Output current I O 1 1.5 3 A Power dissipation PD1 4.5 (Without Heatsink) W PD2 35 (TC =25°C) W Channel temperature T ch +150 °C Storage temperature T stg −40 to +150 °C I Electrical Characteristics I Absolute Maximum Ratings 2-Phase Stepper Motor Unipolar Driver ICs SLA7027MU/SLA7024M/SLA7026M2-Phase/1-2 Phase Excitation (T a=25°C) Ratings Parameter Symbol SLA7027MU SLA7024M SLA7026M Units min typ max min typ max min typ max Control supply current IS 10 15 10 15 10 15 mACondition VS =44V V S=44V V S =44V Control supply voltage V S 10 24 44 10 24 44 10 24 44 V FET Drain-Source voltageVDSS 100 100 100 VCondition VS =44V, IDSS =250µAV S=44V, IDSS =250µAV S =44V, IDSS =250µA FET ON voltage VDS 0.85 0.6 0.85 VCondition ID =1A, AVS=14V I D =1A, VS =14V I D =3A, VS=14V FET drain leakage currentIDSS 444 mACondition V DSS =100V , VS =44V V DSS =100V, VS=44V V DSS =100V , VS =44V FET diode forward voltageVSD 1.2 1.1 2.3 VCondition ID =1A I D =1A I D =3A IIH 40 40 40 µA TTL input current Condition VIH=2.4V, VS=44V V IH=2.4V , VS =44V V IH=2.4V, VS=44V V IH 222 TTL input voltage Condition ID =1A I D =1A I D=3A V (Active High) V IL 0.8 0.8 0.8 Condition VDSS =100V V DSS =100V V DSS =100V V IH 222 TTL input voltage Condition VDSS =100V V DSS =100V V DSS =100V V(Active Low) V IL 0.8 0.8 0.8 Condition ID =1A I D =1A I D =3A Tr 0.5 0.5 0.5 Condition VS=24V, ID =0.8A V S =24V , ID =1A V S=24V, ID =1A Switching time Tstg 0.7 0.7 0.7 µsCondition VS=24V, ID =0.8A V S =24V , ID =1A V S=24V, ID =1A Tf 0.1 0.1 0.1 Condition VS=24V, ID =0.8A V S =24V , ID =1A V S=24V, ID =1A DC characteristics AC characteristics

21SLA7027MU/SLA7024M/SLA7026M SLA7027MU/SLA7024M/SLA7026M2-Phase Stepper Motor Unipolar Driver ICs (2-Phase/1-2 Phase Excitation) I Internal Block Diagram I Diagram of Standard External Circuit(Recommended Circuit Constants) 1, 8, 11, 18pin Description of pins Excitation input Active H Active L Pin 1 OUT A OUT A Pin 8 OUT A OUT A Pin 11 OUT B OUT B Pin 18 OUT B OUT B Reg IN A VSA R SA

234 G A

81 6 5 7 1 2 1 7 1 6 1 8 1 1 IN B IN B VSB G B TDB REF B R SB 14 13 15 10 Active High 71 2 8 1 1 8 1 1 VSA VSB OUT A OUT B OUT BOUT A R SA REF A REF B R SB G A G B 9 3 14 10 4 15 C 4 r6r5 r1r4r3 C 1 C 2 TdA TdB INA INA INB INB INA INA INB INB Active High VCC (46V max) Vb (5V) RsRs C 3 SLA7024M 7026M 7027MU Active Low 71 2 8 1 1 8 1 1 VSA VSB OUT A OUT B OUT BOUT A R SA REF A REF B R SB G A G B 9 3 14 10 4 15 C 4 r6r5 r1r4r3 C 1 C 2 TdA TdB INA INA INB INB INA INA INB INB Active Low VCC (46V max) Vb (5V) RsRs C 3 SLA7024M 7026M 7027MU r1 : 510Ω r2 : 100Ω (VR) r3 : 47kΩ r4 : 47kΩ r5 : 2.4kΩ r6 : 2.4kΩ C 1 : 470pF C 2 : 470pF C 3 : 2200pF C 4 : 2200pF R s :1 Ω typ(7024M) 0.68Ω typ(7026M) 1.8Ω typ(7027MU)1-2 phase excitation clock 0 1 2 3 4 5 6 7 0 1 2 3 INA L LHHHHHLL LHH INA HHHL LLHHHHHL INB HLLLH HHH HLLL INB HHHHHL L LHHHH r1 : 510Ω r2 : 100Ω (VR) r3 : 47kΩ r4 : 47kΩ r5 : 2.4kΩ r6 : 2.4kΩ C 1 : 470pF C 2 : 470pF C 3 : 2200pF C 4 : 2200pF R s :1 Ω typ(7024M) 0.68Ω typ(7026M) 1.8Ω typ(7027MU) (1 to 2W) 1-2 phase excitation clock 0 1 2345670123 INA H H LLLLLH H HLL INA LLLH H HLLLLL H INB LH H HLLLLL H H H INB LLLLL H H HLLLL Excitation signal time chart 2-phase excitation clock 0 1 2 3 0 1 INA HL LHH L INA LHHLLH INB HH L LH H INB LLH HL L Excitation signal time chart 2-phase excitation clock 0 1 2 3 0 1 INA LHHL LH INA HLLH HL INB LL H HLL INB HH L LHH (1 to 2W)

SLA7027MU/SLA7024M/SLA7026M2-Phase Stepper Motor Unipolar Driver ICs (2-Phase/1-2 Phase Excitation) SLA7027MU/SLA7024M/SLA7026M I External Dimensions (Unit: mm) 31±0.2 24.4±0.2 16.4±0.2 3.2±0.15φ 16±0.2 13±0.2 9.9±0.2 Part No. Lot No. 1.7±0.1 2.45±0.2 R-End 6.7±0.5 9.7 –0.5 (3) 0.55 +0.2 –0.1 4±0.7 +0.2 –0.1 0.65 +0.2 –0.1 31.3±0.2 Forming No. No.871 Forming No. No.872 0.65 +0.2 –0.1 1 +0.2 –0.1 3±0.60.55 +0.2 –0.12.2±0.6 6±0.6 7.5±0.6 4.6±0.61.6±0.6

23SLA7027MU/SLA7024M/SLA7026M SLA7027MU/SLA7024M/SLA7026M2-Phase Stepper Motor Unipolar Driver ICs (2-Phase/1-2 Phase Excitation) R S C 3r2 Vb(5V) 9,(10) 3,(14) C 3 r1 r6 Vb(5V) 9,(10) 3,(14) rX Tr Power down signal I Determining the Output Current Fig. 1 shows the waveform of the output current (motor coil cur- rent). The method of determining the peak value of the output current (IO ) based on this waveform is shown below. (Parameters for determining the output current IO ) Vb: Reference supply voltage r1,r2: Voltage-divider resistors for the reference supply voltage R S : Current sense resistor (1) Normal rotation mode IO is determined as follows when current flows at the maximum level during motor rotation. (See Fig.2.) (2) Power down mode The circuit in Fig.3 (rx and Tr) is added in order to decrease the coil current. I O is then determined as follows. Equation (2) can be modified to obtain equation to determine rx. Fig. 4 and 5 show the graphs of equations (1) and (2) respec- tively. (NOTE) Ringing noise is produced in the current sense resistor R S when the MOSFET is switched ON and OFF by chopping. This noise is also generated in feedback signals from RS which may there- fore cause the comparator to malfunction. To prevent chopping malfunctions, r 5(r6) and C3(C4) are added to act as a noise filter. Fig. 2 Normal mode Phase A Phase A IO Fig. 1 Waveform of coil current (Phase A excitation ON) Fig. 3 Power down mode 001234 Current sense resistor R S (Ω ) Output current IO (A) IO = r1+r2 RS r1=510Ω r2=100Ω rx=∞ Vb=5V r2 · Vb Fig. 4 Output current IO vs. Current sense resistor RS Fig. 5 Output current IOPD vs. Variable current sense resistor rx 2.0 1.5 1.0 0.5 00 200 400 600 800 Variable current sense resistor r X (Ω ) Output current IOPD (A) 1000 1200 R S =0.5Ω R S =0.8Ω R S =1Ω IOPD = 1+ RS r1=510Ω r2=100Ω Vb=5V 1 · Vb r1(r2+rX) r2 · rX Application Notes rX= 1 Vb R s • IOPD −1 − 1 However, when the values of these constants are increased, the response from RS to the comparator becomes slow. Hence the value of the output current IO is somewhat higher than the calculated value. r1+r2 Vb R S r1(r2+rX ) r2 • rX Vb R S

SLA7027MU/SLA7024M/SLA7026M2-Phase Stepper Motor Unipolar Driver ICs (2-Phase/1-2 Phase Excitation) SLA7027MU/SLA7024M/SLA7026M Fig. 6 Chopper frequency vs. Motor coil resistance 00 2 4 6 8 10 12 14 16 Motor coil resistance Rm (Ω ) ON time TON ( s) VCC =24V VCC =36V Chopping frequency f (kHz) TOFF =12 s R S =1Ω Lm =1~3ms Rm = =r3 47kΩ 500pF µ µ I Determining the chopper frequency Determining TOFF The SLA7000M series are self-excited choppers. The chopping OFF time TOFF is fixed by r3/C1 and r4/C2 connected to terminal Td. T OFF can be calculated using the following formula: The circuit constants and the TOFF value shown below are rec- ommended. T OFF = 12µs at r3=47kΩ , C1=500pF, Vb=5V I Chopper frequency vs. Supply voltage f (kHz) VCC (V) 0 10 20 30 40 50 Motor : 23LM-C202 IO = 0.8A at VCC =24V R S=1Ω I Chopper frequency vs. Output current f (kHz) IO (A) Motor : 23LM-C202 VCC =24V R S=1Ω TOFF ≅−r3 • C1 n (1− =−r4 • C2 n (1− )rr V b Vb

25SLA7027MU/SLA7024M/SLA7026M SLA7027MU/SLA7024M/SLA7026M2-Phase Stepper Motor Unipolar Driver ICs (2-Phase/1-2 Phase Excitation) Thermal characteristics Fig. 7 Heat dissipation per phase PH vs. Output current IO SLA7027MU SLA7024M 1.2 0.8 0.6 0.4 0.2 Heat dissipation per phase P H (W) Output current IO (A) 36V 24V 15V VCC =44V Motor : 23LM-C202 Holding mode Output current IO (A) Heat dissipation per phase PH (W) Motor : 23LM-C004 Holding mode 1.2 1.0 0.8 0.6 0.4 0.2 VCC =44V 36V 24V 15V Heat dissipation per phase P H (W) Motor : 23PM-C503 Holding mode 36V 15V 24VVCC =44V 4.0 3.0 2.0 1.0 00 1.0 2.0 3.0 Output current I O (A) SLA7026M SLA7027MU 200 500 1K Case temperature rise C–a (°C) Motor : PH265-01B Motor current IO =0.8A Ta=25°C VCC =24V, VS=24V 2-phase excitation Response frequency (pps) Without heatsink Natural cooling TC ( 4 pin) 0200 500 1K Case temperature rise C–a (°C) Motor : PH265-01B Motor current IO =0.8A Ta=25°C VCC =24V, VS=24V 2-phase excitation Response frequency (pps) Without heatsink Natural cooling TC ( 4 pin) 100 500 1K 5K Case temperature rise C–a (°C) Response frequency (pps) Without heatsink Natural cooling Motor : 23PM-C705 Motor current IO =1.5A Ta=25°C VCC =24V, VS=24V 2-phase excitation TC ( 4 pin) SLA7024M SLA7026M Fig. 8 Temperature rise ∆Tj–a ∆TC –a ∆Tj 102 3 4 5 ∆TC Natural cooling Without heatsink 150 100 Total Power (W) (°C) I Thermal Design An outline of the method for calculating heat dissipation is shown be- low. (1) Obtain the value of PH that corresponds to the motor coil current IO from Fig. 7 "Heat dissipation per phase PH vs. Output current IO ." (2) The power dissipation Pdiss is obtained using the following formula. 2-phase excitation: Pdiss ≅ 2PH +0.015×VS (W) 1-2 phase excitation: Pdiss ≅ PH +0.015×VS (W) (3) Obtain the temperature rise that corresponds to the calcu- lated value of Pdiss from Fig. 8 "Temperature rise."

SLA7027MU/SLA7024M/SLA7026M2-Phase Stepper Motor Unipolar Driver ICs (2-Phase/1-2 Phase Excitation) SLA7027MU/SLA7024M/SLA7026M I Note The excitation input signals of the SLA7027MU, SLA7024M and SLA7026M can be used as either Active High or Active Low. Note, however, that the corresponding output (OUT) changes depending on the input (IN). Active Low Input Corresponding output INA (pin6) OUT A (pin8) INA (pin5) OUT A (pin1) INB (pin17) OUT B (pin18) INB (pin16) OUT B (pin11) Active High Input Corresponding output INA (pin6) OUT A (pin1) INA (pin5) OUT A (pin8) INB (pin17) OUT B (pin11) INB (pin16) OUT B (pin18) I Supply Voltage VCC vs. Supply Current ICC Supply current I CC (mA) Supply voltage VCC (V) 500 400 300 200 100 10 20 30 40 50 Motor : 23LM-C202 1-phase excitation Holding mode IO : Output current IO =1A 0.4A 0.2A Supply current I CC (mA) Supply voltage VCC (V) 500 400 300 200 100 10 20 30 40 50 0.2A 0.5A IO =1A Motor : 23LM-C004 1-phase excitation Holding mode IO : Output current Supply current I CC (A) Supply voltage VCC (V) 1.5 1.0 0.5 10 20 30 40 50 Motor : 23PM-C503 1-phase excitation Holding mode I O : Output current IO =1A IO =2A IO =3A SLA7027MU SLA7024M SLA7026M