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2-Phase Unipolar Stepper Motor Driver
SLA7050M/7051M/7052M
General Description
Combining low-power CMOS logic with high-current, high-voltage power FET outputs, the Series SLA705xM translator/driver provides complete control and drive for a two-phase unipolar stepper motor with internal fixed off time, pulse-width modulation (PWM) control of the output current in a power multi-chip module (PMCMTM). The CMOS logic section provides the sequencing logic, direction, full/half-step control, synchronous/asynchronous PWM operation, and a "sleep" function. The minimum CLOCK input is an ideal fit for applications where a complex P is unavailable or overburdened. TTL or LSTTL may require the use of appropriate pull-up resistors to ensure a proper input-logic high. For PWM current control, the maximum output current is determined by the user's selection of a reference voltage and sensing resistor. The NMOS outputs are capable of sinking up to 1,2 or 3 A and withstanding 46 V in the off state. Ground-clamp and flyback diodes provide protection against inductive transients. Special power-up sequencing is not required. Full-step (2 phase) and half-step operation are externally selectable. Two-phase drive energizes two adjacent phases in each detent position (AB-BC-CD-DA). This sequence mode offers an improved torquespeed product, greater detent torque, and is less susceptable to motor resonance. Half-step excitation alternates between the one-phase and two-phase modes (A-AB-B-BC-C-CD D-DA), providing an eight-step sequence.
October 2005
Package----SLA18Pin
Applications
PPC Printer OA Equipment
Key Specifications
Motor Supply Voltage (VM)44V max Load Supply Voltage (Vs)10V44V Logic Supply Voltage (Vcc)3V5.5V Output Current (Io)1A(SLA7050M) 2A(SLA7051M) 3A(SLA7052M) Output Maximum Voltage (VDSS)100V min
Features
To 3A Output Rating Internal Sequencer for Full or Half-Step Operation PWM Constant-Current Motor Drive Cost-Effective, Multi-Chip Solution 100 V, Avalanche-Rated NMOS Low rDS(on) NMOS Outputs (300 milli-ohms typical) Advanced, Improved Body Diodes Half-Step and Full-Step Unipolar Drive Inputs Compatible with 3.3 V or 5 V Control Signals Sleep Mode Internal Clamp Diodes
Typical Connection
Vs=10V 44V
1
3
14
16
18
Vcc=3.0V5.5V
Disable
CA
5
Q1
r1
7 8 11 12 9
OutA OutA/ Vcc
Vs
OutB/ OutB NC GA GB NC SenseB
13 2 4 15 17
CB

Clock SLA M Sync SLA M CW/CCW Full/Half Ref SenseA Gnd
6 10
SLA M
r2
RsA
RsB
S-Gnd
Gnd
P-Gnd
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2-Phase Unipolar Stepper Motor Driver
SLA7050M/7051M/7052M
Scope
October 2005
The present specifications shall apply to Sanken 2 Phase Stepper Motor Driver IC,SLA705xM Series. The present specifications shall apply to SLA 705xM Series which is performed RoHS instructions. Lead part solderPb free Inner solderLead content 85%
Outline
Type Structure Applications Hybrid integrated circuit Plastic molded (transfer mold) To drive a 2 phase stepper motor. (Full or Half Step. PWM Current Control.)
Absolute maximum ratings
Characteristic Motor Supply Voltage Load Supply Voltage Logic Supply Voltage Symbol VM VS Vcc Ratings 46 46 7 1.0 Output Current Io 2.0 3.0 Logic Input Voltage REF Input Voltage Sense Voltage Total Device Dissipation Junction Temperature Operating Temperature Range Storage Temperature Range VIN VREF VRs PD Tj Ta Tstg 0.3Vcc0.3 0.3Vcc0.3 22 4 20 150 2085 30150 V V V W W Tw<1S doesn't contain it. at Ta=25 at Tc=25 A Unit V V V SLA7050M SLA7051M SLA7052M Remarks
Sanken Electric Co.,Ltd.
I03-002EA-051006
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2-Phase Unipolar Stepper Motor Driver
SLA7050M/7051M/7052M
Electrical characteristics
Recommendable Operating Range Characteristic Motor Supply Voltage Load Supply Voltage Logic Supply Voltage REF Input Voltage Package Temperature Symbol VM VS Vcc VREF Tc 10 3.0 0.1 Ratings MIN MAX 44 44 5.5 1.0 100 Unit V V V V
October 2005
Remarks
Please adjust the Vcc surge voltage to 0.5V or less. The control current accuracy decreases in 0.1V or less.
10Pin temperature at No Fin
Electrical Characteristic (Ta=25,Vs=24V,Vcc=5V Unless Otherwise Noted) Characteristic Load Supply Current Logic Supply Current Output Maximum Voltage FET On-State Resistance FET Diode Forward Voltage Maximum Clock Frequency Logic Input Voltage Logic Input Current REF Input Voltage REF Input Current Sense Voltage Symbol IS ISS Icc VDSS RDS(on) VSD Fclock VIL VIH IIL IIH VREF VREFS IREF VRs Vccx0.75 1 1 0 2.0 10 VREF 1.5 Vcc 100 0.3 0.8 0.5 1.1 100 Vccx0.25 MIN Limits TYP MAX 15 100 3 Unit mA A mA V V kHz V V A A V V A V
Stationary current control
Output OFF(Sleep)
Test Condition Regularity
atSLEEPoperates
VS=44V IDSS=1mA ID=1A ISD=1A
Sanken Electric Co.,Ltd.
I03-002EA-051006
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2-Phase Unipolar Stepper Motor Driver
SLA7050M/7051M/7052M
Electrical Characteristic (Ta=25,Vs=24V,Vcc=5V Unless Otherwise Noted) Characteristic PWM OFF Time PWM Minimum ON Time Sleep-Enable return time Switching Time Symbol TOFF TON(min) TSE TONC TOFFC 100 2.5 2.0 MIN Limits TYP 12 5 MAX Unit S S S S S
October 2005
Test Condition
2.0 V 1.5 VREF Io A 1.5 ClockOut ClockOut
Truth table Pin Function CWCCW FullHalf REF Sync Clock Low level Forward(CW) Full Step Enable Non synchronous PWM Positive Edge High level Reverse(CCW) Half Step Output disable(Sleep) Synchronous PWM
Input Logic Timing 10S(min) Clock 5S(min) 5S(min)
CWCCW & FullHalf
2S(min)
2S(min)
2S(min)
2S(min)
Sanken Electric Co.,Ltd.
I03-002EA-051006
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2-Phase Unipolar Stepper Motor Driver
SLA7050M/7051M/7052M
Timing chart
October 2005
Step Vcc Clock CW/CCW F/H OUT_ A OUT_ /A OUT_ B OUT_ /B
0
2
4
6
0
2
4
2
0
6
5
4
3
2
1
0
7
6
5
6
7
0
1
2
4
6
0
This timing chart is a voltage mark. PWM signal for current control is not superimposed on this timing chart.
Sanken Electric Co.,Ltd.
I03-002EA-051006
5/14
2-Phase Unipolar Stepper Motor Driver
SLA7050M/7051M/7052M
Heat design data Total PowerT indegc
October 2005
150 125 100 T ()
j-a=31.25(/W) Ta=25 Air cooling without blower (No Fin)
75 50 25 0 0 1 2 3 Total Power P (W)
c-a=27.5(/W)
Tj-a Tc-a
4
5
The temperature of the case is 10pin. TaP
4.5 4 Allowable Package Power Dissipation in Watts (W) 3.5 3 2.5 2 1.5 1 0.5 0 0 10 20 30 40 50 60 70 Ambient Temperature () 80 90 100
j-a=31.25(/W)
Sanken Electric Co.,Ltd.
I03-002EA-051006
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2-Phase Unipolar Stepper Motor Driver
SLA7050M/7051M/7052M
Block diagram (Connection diagram)
Full/Half CW/CCW OutA 1 6 SenseA OutA/ 3 Clock OutB/ N.C. 2 N.C. Vcc GA 4 Vs 14 GB
October 2005
OutB
11 12
7
5
15
17
16
18
MIC
GA OSC GA/
Reg GB Sequencer GB/ OSC
PWM Control

Synchro Control Sleep Control
PWM Control

9 Ref
8 Sync
10 Gnd
13 SenseB
Pin arrangement ,Functional table Symbol Function 1 OutA Phase A Output 2 N.C. No Contact 3 OutA/ Phase A/ Output GA 4 Phase A Gate 5 Vcc Logic supply 6 SenseA Phase A current sense 7 Clock Step clock 8 Sync Synchronous PWM control 9 Ref Current reference & Output disable 10 GND GND 11 CW/CCW Forward reverse control 12 Full/Half Full step half step control 13 SenseB Phase B current sense 14 Vs Load supply GB 15 Phase B Gate 16 OutB/ Phase B/ Output 17 N.C. No Contact 18 OutB Phase B Output The gating signal of MOS FET outputs, and use 4pin and 15pin by the unwiring, please.
Pin Number
Sanken Electric Co.,Ltd.
I03-002EA-051006
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2-Phase Unipolar Stepper Motor Driver
SLA7050M/7051M/7052M
Example application circuit
Vs=10V 44V
October 2005
1
3
14
16
18
Vcc=3.0V 5.5V
Disable
5
Q1
r1
7 8 11 12 9
Out Vcc A
OutA/
Vs
OutB/
Out B NC GA GB NC
2 4 15 17
CA
CB

Clock Sync CW/ CCW Full/Half Ref SenseA
6
SLA7050M SLA7051M SLA7052M
Gnd
10
SenseB
13
r2
RsA
RsB
S-Gnd
Gnd
P-Gnd
Reference constant Rs=0.12(Loss attention PIo2xRs) R1=10k R2=5.1k(VR)
CA=100F50V CB=10F10V Q1
Be careful of especially the noise on Vcc line. If the noise on Vcc line exceeds 0.5V, a product may incorrect-operate. When you do not use Logic inputs (CW/CCW and F/H, Sync), please be sure to connect with Vcc or GND. To minimize the effect of system ground IR drops on the logic and reference input signals, Ground pin should have a low-impedance return to system groud. 2pin,4pin,15pin and 17pin are No Contact.
Sanken Electric Co.,Ltd.
I03-002EA-051006
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2-Phase Unipolar Stepper Motor Driver
SLA7050M/7051M/7052M
Package information
Package type and physical dimensions
October 2005
a b
a. Type Number
SLA705xM
Dimensions in mm
b. Lot Number 1st letter The last digit of year 2nd letter Month 19 Arabic Numerals 10 O 11 N 12 D (1 to 9 for Jan. to Sept. O for Oct. N for Nov. D for Dec.) 3rd &4th letter day 0131 Arabic Numerals
Appearance The body shall be clean and shall not bear any stain, rust or flaw. Marking The type number and lot number shall be clearly marked in white.
Sanken Electric Co.,Ltd.
I03-002EA-051006
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2-Phase Unipolar Stepper Motor Driver
SLA7050M/7051M/7052M
Packing specifications
October 2005
31
580
A rubber stopper is provided on both ends of the stick. 18 pieces in X direction (Maximum 18 pieces in one stick)
8 X
130 610
20 sticks in Y direction 3 sticks in Y direction
185 Z Y
18piecesx20x3=1080pieces(Max.)
Dimensions in mm
Sanken Electric Co.,Ltd.
I03-002EA-051006
10/14
2-Phase Unipolar Stepper Motor Driver
SLA7050M/7051M/7052M
Cautions and warnings
The calculation of control current SLA705xM Series control current Io is calculated as follow. IoVREFRs REF Voltage range is 0.1V1.0V When the REF<0.1V, the accuracy of control current is reduce.
October 2005
Moreover, if REF voltage is set up more than 2.0V, all outputs will be in OFF state.
Installation to a heat sink 1)Recommended Clamping Torque (to External Heat sink) 0.4900.822Nm 2)Recommended Silicone SHIN-ETSU CHEMICAL G746 YG6260 GE TOSHIBA SILICONES SC102 DOW CORNING TORAY SILICONE
Notice
This driver has C-MOS inputs. Please notice as following contents. When static electricity is a problem, care should be taken to properly control the room humidity. This is particularly true in the winter when static electricity is most troublesome. Care should be taken with device leads and with assembly sequencing to avoid applying static charges to IC leads. PC board pins should be shorted together to keep them at the same potential to avoid this kind of trouble.
Sanken Electric Co.,Ltd.
I03-002EA-051006
11/14
2-Phase Unipolar Stepper Motor Driver
SLA7050M/7051M/7052M

October 2005
Asia Pacific
China
Sanken Electric Hong Kong Co., Ltd. Suite 1026 Ocean Centre, Canton Road, Tsimshatsui, Kowloon, Hong Kong Tel: 852-2735-5262 Fax: 852-2735-5494 Sanken Electric (Shanghai) Co., Ltd. Room3202, Maxdo Centre, Xingyi Road 8, Changning district, Shanghai, China Tel: 86-21-5208-1177 Fax: 86-21-5208-1757 Taiwan Sanken Electric Co., Ltd. Room 1801, 18th Floor, 88 Jung Shiau East Road, Sec. 2, Taipei 100, Taiwan R.O.C. Tel: 886-2-2356-8161 Fax: 886-2-2356-8261
India
Saket Devices Pvt. Ltd. Office No.13, First Floor, Bandal - Dhankude Plaza, Near PMT Depot, Paud Road, Kothrud, Pune - 411 038, India Tel: 91-20-5621-2340 91-20-2528-5449 Fax: 91-20-2528-5459
Japan
Sanken Electric Co., Ltd. Overseas Sales Headquaters Metropolitan Plaza Bldg. 1-11-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-0021, Japan Tel: 81-3-3986-6164 Fax: 81-3-3986-8637
Korea
Sanken Electric Korea Co., Ltd. Mirae Asset Life Bldg. 6F, 168 Kongduk-dong, Mapo-ku, Seoul, 121-705, Korea Tel: 82-2-714-3700 Fax: 82-2-3272-2145
Singapore
Sanken Electric Singapore Pte. Ltd. 150 Beach Road, #14-03 The Gateway West, Singapore 189720 Tel: 65-6291-4755 Fax: 65-6297-1744
Sanken Electric Co.,Ltd.
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2-Phase Unipolar Stepper Motor Driver
SLA7050M/7051M/7052M
Europe
United Kingdom
Sanken Power Systems (UK) Limited Pencoed Technology Park, Pencoed, Bridgend CF35 5HY. UK Tel: 44-1656-869-100 Fax: 44-1656-869-162
October 2005
North America
United States
Allegro MicroSystems, Inc. 115 Northeast Cutoff, Worcester, Massachusetts 01606, U.S.A. Tel: 1-508-853-5000 Fax: 1-508-853-3353 Allegro MicroSystems, Inc. (Southern California) 14 Hughes Street, Suite B105, Irvine, CA 92618 Tel: 1-949-460-2003 Fax: 1-949-460-7837
Sanken Electric Co.,Ltd.
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2-Phase Unipolar Stepper Motor Driver
SLA7050M/7051M/7052M
CAUTION / WARNING
October 2005
The information in this publication has been carefully checked and is believed to be accurate; however, no responsibility is assumed for inaccuracies. Sanken reserves the right to make changes without further notice to any products herein in the interest of improvements in the performance, reliability, or manufacturability of its products. Before placing an order, Sanken advises its customers to obtain the latest version of the relevant information to verify that the information being relied upon is current. Application and operation examples described in this catalog are quoted for the sole purpose of reference for the use of the products herein and Sanken can assume no responsibility for any infringement of industrial property rights, intellectual property rights or any other rights of Sanken or any third party which may result from its use. When using the products herein, the applicability and suitability of such products for the intended purpose or object shall be reviewed at the users' responsibility. Although Sanken undertakes to enhance the quality and reliability of its products, the occurrence of failure nd defect of semiconductor products at a certain rate is inevitable. Users of Sanken products are requested to take, at their own risk, preventative measures including safety design of the equipment or systems against any possible injury, death, fires or damages to the society due to device failure or malfunction. Sanken products listed in this catalog are designed and intended for the use as components in general purpose electronic equipment or apparatus (home appliances, office equipment, telecommunication equipment, measuring equipment, etc.). Before placing an order, the user's written consent to the specifications is requested. When considering the use of Sanken products in the applications where higher reliability is required (transportation equipment and its control systems, traffic signal control systems or equipment, fire/crime alarm systems, various safety devices, etc.), please contact your nearest Sanken sales representative to discuss and obtain written confirmation of your specifications. The use of Sanken products without the written consent of Sanken in the applications where extremely high reliability is required (aerospace equipment, nuclear power control systems, life support systems, etc.) is strictly prohibited. Anti radioactive ray design is not considered for the products listed herein. This publication shall not be reproduced in whole or in part without prior written approval from Sanken. This is notification that you, as purchaser of the products/technology, are not allowed to perform any of the following: 1. Resell or retransfer these products/technology to any party intending to disturb international peace and security. 2. Use these products/technology yourself for activities disturbing international peace and security. 3. Allow any other party to use these products/technology for activities disturbing international peace and security. Also, as purchaser of these products/technology, you agree to follow the procedures for the export or transfer of these products/technology, under the Foreign Exchange and Foreign Trade Law, when you export or transfer the products/technology abroad.
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