SLA7070M ALLEGRO
Document overview
- Manufacturer or author: Provided By www.digicamel.com(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 12
Technical content
Features
Power supply voltages, VBB : 46 V(max.), 10 to 44 V normal operating range Logic supply voltages, VDD: 3.0 to 5.5 V Maximum output currents: 1 A, 1.5 A, 2 A, 3 A Built-in sequencer Simplified clock-in stepping control Both full/half-stepping Built-in sense resistor, RSInt All variants are pin-compatible for enhanced design flexibility ZIP type 23-pin molded package (SLA package) Self-excitation PWM current control with fixed off-time Built-in synchronous rectifying circuit reduces losses at PWM off Synchronous PWM chopping function prevents motor noise in Hold mode Sleep mode for reducing the IC input current in stand-by state Built-in protection circuitry against motor coil opens/shorts option available FEATURES AND BENEFITS ABSOLUTE MAXIMUM RATINGS AT TA = 25°C Output Current, IOUT Logic Input Voltage, VIN REF Input Voltage, VREF Sense Voltage, VSInt Power Dissipation, PD Storage Temperature, Tstg ...–30 to 150°C
SLA7070M, SLA7071M, SLA7072M, and SLA7073M Motor Driver ICs Motor Drivers
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 Copyright © 2005 Allegro MicroSystems, Inc. PART NUMBERS AND OPTIONS The following are the product variants and optional features available for these variants of the SLA7070M series. Not all combinations of standard models and product op- tions are available in high-volume production quantities. For information on product availability, and assistance with deter- mining the IC features that are the best fit for your application, please contact our sales office or representative. NOTE The following abbreviations are used throughout this document to refer to product variants: PR – Product with both Protection Circuitry and built-in R SInt options R – Product with the built-in RSInt option Part Number Protection Output Current, IOUT (A) Sequencer Blanking Time (μs) Clock Edge SLA7070MR R SInt SLA7070MPR Protection Circuitry and R SInt SLA7071MR R SInt 1.5 SLA7071MPR Protection Circuitry and R SInt Full/half Step 3.2 Positive SLA7072MR R SInt SLA7072MPR Protection Circuitry and R SInt SLA7073MR R SInt SLA7073MPR Protection Circuitry and R SInt
SLA7070M, SLA7071M, SLA7072M, and SLA7073M Motor Driver ICs Motor Drivers www.allegromicro.com For R products, protection circuits not built-in. FLAG pin is not connected internally. FUNCTIONAL BLOCK DIAGRAM AND PIN ASSIGNMENTS Sequencer Sleep Circuit Synchro ControlPWM Control OSC Comp DAC Pre- Driver PWM Control OSC DAC Pre- Driver Comp MIC Reg. OutA OutA OutA OutA OutB OutB OutB OutB VDD Ref/Sleep1 Flag N.C. Clock Reset VBB SenseBSenseA GndSync RSInt RSInt 1234 6789 1 0 1 1 1314 15 16 20 21 22 23 Protect Protect F/R Pin No. Symbol Functions Pin No. Symbol Functions OutA Output of phase A
13 Ref / Sleep1 Input for control current and Sleep 1 setting
2 14 VDD Power supply to logic OutA Output of phase A ¯
15 Reset Reset for internal logic
4 16 F / R Forward / reverse switch input
5 SenseA Phase A current sensing 17 Sync Synchronous PWM control switch input
6 NC No internal connection 18 Flag* Output from protection circuits monitor
Commutation and Sleep2 setting
19 SenseB Phase B current sensing
OutB Output of phase B ¯ 9M 3 2 1
10 Clock Step clock input 22
OutB Output of phase B11 VBB Main power supply (for motor)
12 GND Ground
*Flag pin active on PR products only; not internally connected for R products.
SLA7070M, SLA7071M, SLA7072M, and SLA7073M Motor Driver ICs Motor Drivers Worcester, Massachusetts 01615-0036 ELECTRICAL CHARACTERISTICS, valid at TA = 25°C, VBB = 24 V, VDD = 5 V, applicable to both PR and R products, unless otherwise specified Characteristics Symbol Test Conditions Min. Typ. Max. Units Main Power Supply Current IBB Normal mode – – 15 mA IBBS Sleep1 and Sleep2 modes – – 100 μA Logic Power Current I DD ––5 m A MOSFET Breakdown Voltage V DSS VBB = 44 V, IDS = 1 mA – – – V Maximum Response Frequency f clk Clock Duty Cycle = 50% 250 – – kHz Logic Supply Voltage VIL – – 0.25 × V DD V VIH 0.75 × VDD –– V Logic Supply Current IIL –± 1– μA IIH –± 1– μA REF Input Voltage VREF See pages 6 and 7 – – – V VREFS Output OFF, Sleep1 mode, IBBS in specification, sequencer = enable 2.0 – V DD V REF Input Current I REF – ±10 – μA SENSE Voltage V SInt VREF = 0.1 V to 0.5 V, Step reference current ratio: 100% VREF – 0.03 V REF VREF + 0.03 V Sleep-Enable Recovery Time t SE VREF = 2.0 V → 1.5 V 100 – – μs Switching Time tcon Clock → Output ON – 2.0 – μs tcoff Clock → Output OFF – 1.5 – μs STEPPING CHARACTERISTICS, applicable to both PR and R products; representative values from SLA7070M series shown Valid at TA = 25°C, VBB = 24 V, VDD = 5 V, unless otherwise specified Characteristics Symbol Test Conditions Min. Typ. Max. Units Step Reference Current Ratio Mode F VREF ≈ VSInt = 100 %, VREF = 0.1 to 0.5 V – 100 – % Mode 8 – 70 – % PWM Minimum On-Time t on(min) – 3.2 – μs PWM Off-Time t off –1 2– μs
SLA7070M, SLA7071M, SLA7072M, and SLA7073M Motor Driver ICs Motor Drivers www.allegromicro.com OUTPUT CHARACTERISTICS for both PR and R products Valid at TA = 25°C, VBB = 24 V, VDD = 5 V, unless otherwise specified Characteristics Symbol Test Conditions Min. Typ. Max. Units IOUT = 1.0 A (SLA7070M) Output On Resistance R DS(ON) IDS = 1 A – 0.7 0.85 Ω Body Diode Forward Voltage V f If = 1 A – 0.85 1.1 V IOUT = 1.5 A (SLA7071M) Output On Resistance R DS(ON) IDS = 1.5 A – 0.45 0.6 Ω Body Diode Forward Voltage V f If = 1.5 A – 1.0 1.25 V IOUT = 2.0 A (SLA7072M ) Output On Resistance R DS(ON) IDS = 2 A – 0.25 0.4 Ω Body Diode Forward Voltage V f If = 2 A – 0.95 1.2 V IOUT = 3.0 A (SLA7073M) Output On Resistance R DS(ON) IDS = 3 A – 0.18 0.24 Ω Body Diode Forward Voltage V f If = 3 A – 0.95 2.1 V IOUT = 3.0 A (SLA7073MPR and SLA7073MR) Sense Resistor Rating* R SInt Tolerance: ±3 % 0.150 0.155 0.160 Ω REF Input Voltage V REF Within specified current limit 0.1 – 0.45 V *RSInt includes approximately 5 mΩ circuit resistance in addition to the resistance of the resistor itself. IOUT = 2.0 A (SLA7072MPR and SLA7072MR) Sense Resistor Rating* R SInt Tolerance: ±3 % 0.199 0.205 0.211 Ω REF Input Voltage V REF Within specified current limit 0.1 – 0.4 V BUILT-IN SENSE RESISTOR CHARACTERISTICS for PR and R products Valid at TA = 25°C, VBB = 24 V, VDD = 5 V, unless otherwise specified Characteristics Symbol Test Conditions Min. Typ. Max. Units IOUT = 1.0 A (SLA7070MPR and SLA7070MR) Sense Resistor Rating* R SInt Tolerance: ±3 % 0.296 0.305 0.314 Ω REF Input Voltage V REF Within specified current limit 0.1 – 0.3 V IOUT = 1.5 A (SLA7071MPR and SLA7071MR) Sense Resistor Rating* R SInt Tolerance: ±3 % 0.296 0.305 0.314 Ω REF Input Voltage V REF Within specified current limit 0.1 – 0.45 V
SLA7070M, SLA7071M, SLA7072M, and SLA7073M Motor Driver ICs Motor Drivers Worcester, Massachusetts 01615-0036 PROTECTION CIRCUIT CHARACTERISTICS* Valid at TA = 25°C, VBB = 24 V, VDD = 5 V, unless otherwise specified Characteristics Symbol Test Conditions Min. Typ. Max. Units PR products Overcurrent Sense Voltage V OCP Motor coils shorted 0.65 0.7 0.75 V FLAG Output Voltage V FlagL IFLAGL = 1.25 mA – – 1.25 V VFlagH IFLAGH = –1.25 mA V DD – 1.25 – – V FLAG Output Current I FlagL – – 1.25 mA IFlagH –1.25 – – mA *Protection circuits work on the condition of VSInt ≥ VOCP. RECOMMENDED OPERATING RANGES, applicable to both PR and R products, unless otherwise specified Characteristics Symbol Remarks Min Max Units Load (Motor) Supply Voltage V M –4 4 V Main Power Supply Voltage V BB 10 44 V Logic Supply Voltage V DD Surge voltage at VDD pin should be less than ±0.5 V to avoid malfunctioning in operation 3.0 5.5 V Case Temperature T C Measured at pin 12, without heat sink – 90 °C ALLOWABLE POWER DISSIPATION ǰj-a= 26.6͠/W 0 1 02 03 04 05 06 07 08 09 0 Ambient Temperature, TA (°C) Allowable Power Dissipation, PD (W) PR and R Products
Figure 3. Synchronous rectification operation. During Dead Time, as a fixed time by an internal oscillator. system between the SLA7060M series and SLA7070M series. flows through the body diode on the MOSFET.
Figure 4. Motor coil short circuit protect circuit operation. Overcurrent that flows with- ates, VDD must be cycled and started up again. circuit. They are described in this section.
- Motor Coil Short-Circuit Protection (Load Short) Circuit This protection circuit, embedded in the SLA7070M series, begins to operate when the device detects an increase in the volt- age level on the sense resistor, V SInt . The voltage at which motor coil short-circuit protection starts its operation, VOCP, is set at approximately 0.7 V . The out- put is disabled at the time the protection circuit starts. In order for the motor coil short-circuit protection circuit to operate, VSInt must be greater than VOCP . Overcurrent that flows without passing the sense resistor is undetectable. To resume the circuit after protection operates, VDD must be cycled.
- Motor Coil Open Protection Details of this functions is not disclosed yet due to our pat- ent policy.
SLA7070M, SLA7071M, SLA7072M, and SLA7073M Motor Driver ICs Motor Drivers Worcester, Massachusetts 01615-0036 1.7 ±0.1 4.8 ±0.2 16.4 ±0.2 31 ±0.2 31.3 ±0.2 24.4 ±0.2 φ3.2 ±0.15 12.9 ±0.2 41 0 115 0.65 +0.2 -0.1 16 ±0.2 9.9 ±0.2 (Tip Measurement) 4-(R1) 5 ±0.5 0.55 +0.2 -0.1 9.5 +1 -0.5 4.5 ±0.7 R-end (Includes Mold Flash) 2.45 ±0.2 (Base Measurement) (Tip Measurement) (Fin) Gate Flash (4.3) φ3.2 ±0.15 x 3.8 Terminal core material: Cu Terminal treatment: Ni plating and solder dip Leadform: 2151 Dimensions in millimeters Branding: 1st line, type: SLA707xMR 2nd line-left, lot: YMDD Where: Y is the last digit of the year of manufacture M is the month ( 1 to 9, O, N, D) DD is the 2-digit date 2nd line-right, subtype: P for Protection Circuitry option; otherwise, blank Branding XXXXXXXX XXXX X PACKAGE OUTLINE DRAWING, SLA-23 PIN Leadframe plating Pb-free. Device composition includes high-temperature solder (Pb >85%), which is exempted from the RoHS directive.
SLA7070M, SLA7071M, SLA7072M, and SLA7073M Motor Driver ICs Motor Drivers www.allegromicro.com 130 185 610 580 Dimensions in mm
20 Tubes
18 Devices
18 Devices per tube
1080 Devices per carton
3 Layers
SLA7070M, SLA7071M, SLA7072M, and SLA7073M Motor Driver ICs Motor Drivers Worcester, Massachusetts 01615-0036 The products described herein are manufactured in Ja pan by Sanken Electric Co., Ltd. for sale by Allegro MicroSystems, Inc. Sanken and Allegro reserve the right to make, from time to time, such de par tures from the detail spec i fi ca tions as may be re quired to per mit im- prove ments in the per for mance, reliability, or manufacturability of its prod ucts. Therefore, the user is cau tioned to verify that the in for ma tion in this publication is current before placing any order. When using the products described herein, the ap pli ca bil i ty and suit abil i ty of such products for the intended purpose shall be reviewed at the users responsibility. Although Sanken undertakes to enhance the quality and reliability of its prod ucts, the occurrence of failure and defect of semi con duc tor products at a certain rate is in ev i ta ble. 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 society due to device failure or malfunction. Sanken products listed in this publication are designed and intended for use as components in general-purpose electronic equip ment or apparatus (home ap pli anc es, office equipment, tele com mu ni ca tion equipment, measuring equipment, etc.). Their use in any application requiring radiation hardness assurance (e.g., aero space equipment) is not supported. When considering the use of Sanken products in ap pli ca tions where higher reliability is re quired (transportation equipment and its control systems or equip ment, fire- or burglar-alarm systems, various safety devices, etc.), contact a company sales representative to discuss and obtain written confirmation of your spec i fi ca tions. The use of Sanken products without the written consent of Sanken in applications where ex treme ly high reliability is required (aerospace equip- ment, nuclear power-control stations, life-support systems, etc.) is strictly prohibited. The information in clud ed herein is believed to be accurate and reliable. Ap pli ca tion and operation examples described in this pub li ca tion are given for reference only and Sanken and Allegro assume no re spon si bil i ty for any in fringe ment of in dus tri al property rights, intellectual property rights, or any other rights of Sanken or Allegro or any third party that may result from its use. 1234 WARNING — These devices are designed to be operated at lethal voltages and energy levels. Circuit designs that embody these components must conform with applicable safety requirements. Pre cau tions must be taken to prevent accidental contact with power-line potentials. Do not connect ground ed test equipment. The use of an isolation transformer is recommended during circuit development and breadboarding.