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Stepping Motor Dr ive IC AN8495SB
I Overview
AN8495SB is a stepping-motor-driving IC, created by using a D-MOS process, and provides a maximum output of 30V at 1.5A. By the PWM drive and 2-bit constant-current-chopping-drive method, the winding 1-2 phase drive is possible. Unit:mm
18.40±0.20 (5.15) (4.80) 28 22 21 15 (1.315)
10.93±0.30
8.30±0.20
0.30-0.05
+0.10
0° to 10°
(1.20)
0.80
0.35+0.10 -0.05
G 4-phase input (W1-2 phase excitation ) G 2-bit current level switching. G Built-in noise canceler. G Built-in phase-change thru-current protection function. G Built-in flywheel diode
SEATING PLANE
0.10±0.10
2.70±0.20
I Features
0.65±0.20 1 7 (6.40) 8 14
SEATING PLANE
HSOP042-P-0400
I Applications
G Printer G FAX G PPC
¶ The products and specifications are subject to change without any notice. Please ask for the latest product standards to guarantee the satisfaction of your product requirements.
1 Kotari Yakemachi, Nagaokakyo, Kyoto, 617-8520 Japan
E00094AE
Tel. (075) 951-8151
http://www.panasonic.co.jp/semicon/
New publication, effective from Sep. 7. 2001
I Block Diagram
VCC
ENABLEA PHA1 IN0 IN1 IN2 IN3 ENABLEB PHB1
25
7
1
3
4
Senser Current
23
FIN
24
OSC
Senser Current
5
6
9
2
20
19
BLANK
R Q S
R S Q
CHARGE PUMP CIRCUIT
ENA.off Vref TSD Signal Vref
GATE CIRCUIT
8
17
16
Rs
26
15
FIN
14
13
Rs
12
22
GATE CIRCUIT
21
VM
* A voltage is applied externally to Terminals PHA1, PHB1, IN0 to 3, ENABLEA, ENABLEB, VREFA and VREFV, and may cause an overcurrent. To protect the device from overcurrent, insert an overcurrent protective resistor (1K or over).
I Pin Description
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 PHA1 PHB1 IN0 IN1 IN2 IN3
ENABLEA
Function A phase changeover terminal B phase changeover terminal A phase output torque control 1 A phase output torque control 2 B phase output torque control 1 B phase output torque control 2 A phase start/stop signal input Supply terminal for Motor 1 B phase start/stop signal input Motor drive B phase output 2 B phase current detector Motor drive B phase output 1 Motor drive A phase output 2
Pin No. 16 17 18 19 20 21 22 23 24 25 26 27 28 FIN RCSA AOUT1 N.C BC1 BC2
VPUMP
Function A phase current detector Motor drive A phase output 1 Capacitor for charge pump circuit 1 Capacitor for charge pump circuit 2 Charge pump circuit output Supply terminal for Motor 2
VM2
VM1
ENABLEB
VREFA A phase torque ref. voltage input VREFB B phase torque ref. voltage input VCC GND N.C N.C GND Supply terminal Signal GND Signal GND
N.C N.C BOUT2 RCSB BOUT1 AOUT2
I Absolute Maximum Ratings
Parameter Storage temperature Operating ambient temperature Supply voltage Supply current Power dissipation Motor supply voltage Output voltage Motor drive current Flyhoile diode current Charge pump circuit voltage Symbol Tstg Topr VCC ICC PD VM1/VM2 VOUT IOUT If VPUMP Rating -55 to +150 -20 to +70 7.0 30 1.04 30 30 ±1.5 1.5 40 Unit °C °C V mA W V V A A V Pin=21 2 Pin=8,22 Pin=12,14 15,17 Note 1 1
Note 1) Ta=25°C except storage temperature and operating ambient temperature. Note 2) Power dissipation shows the value of only package at Ta=70°C.
I Recommended Operating Range
Operating supply voltage range VCC VM 4.75 V to 5.25 V 18.0 V to 28.0 V
I Electrical Characteristics (Ta = 25 °C ± 2 °C,VCC =5.0 V,VM = 24 V )
Parameter Power block Output saturation voltage H Output saturation voltage L Flywheel diode forward voltage Output leak current 1 Circuit current Supply current (2-circuit ON) I/O block IN "H" input voltage IN "L" input voltage IN "H" input current IN "L" input current PHA1,PHB1 "H" input voltage PHA1,PHB1 "L" input voltage PHA1,PHB1 "H" input current PHA1,PHB1 "L" input current VINH VINL IINH IINL
VPHAH/PHBH VPHAL/PHBL IPHAH/PHBH IPHAL/PHBL
Symbol VOH VOL VDI ILEAK1 ICC
Condition I = -1.0 A I = 1.0 A I = 1.0 A VOUT = 30 V,VRCS = 0 V ENABLEA=ENABLEB= 0 V
min
typ
max 0.98 1.5 50 9.5 VCC 0.6 10 -20 VCC 0.6 10 -50
Unit V V V µA mA V V µA µA V V µA µA
VM-0.75 VM-0.5 0.5 2.0 GND 0.65 1.0 10 5 0 -40 0 -100
VIN = 5 V VIN = 0 V
-10 -80 2.0 GND
PHA1 = PHB1 = 5 V PHA1 = PHB1 = 0 V
-10 -150
I Electrical Characteristics (Ta = 25 °C ± 2 °C,VCC =5.0 V,VM = 24 V )
Parameter I/O block (continue) ENABLEA,ENABLEB "H" input voltage ENABLEA,ENABLEB "L" input voltage ENABLEA,ENABLEB "H" input current ENABLEA,ENABLEB "L" input current Control block Input bias current PWM frequency Pulse blanking time Comparator threshold H(100%) Comparator threshold C(67%) Comparator threshold L(33%) IREFA/REFB fPWM TB VTH VTC VTL VREFA = VREFB = 0 V IN0=IN1=0 V,IN2=IN3=0 V IN0=5V,IN1=0V,IN2=5V,IN3=0V IN0=0V,IN1=5V,IN2=0V,IN3=5V VREFA = VREFB = 5 V 67 50.2 1.0 0.479 0.305 0.151 90 67 2.0 0.503 0.330 0.167 150 83.8 3.0 0.528 0.356 0.185 µA kHz µs V V V VENABLEAH VENABLEBH VENABLEAL VENABLEBL IENABLEAH IENABLEBH IENABLEAL IENABLEBL ENABLEA = ENABLEB = 0 V -15 -2 15 µA ENABLEA = ENABLEB = 5 V -10 0 10 µA GND 0.6 V 2.0 VCC V Symbol Condition min typ max Unit
I Electrical Characteristics (Reference Data for Designing)
Parameter Output block Output slew rate 1 Output slew rate 2 Dead time Thermal shutdown Thermal shutdown temperature Thermal shutdown hysteresis TSDon TSD 150 36 °C °C VTr VTf TD Rise time Fall time 240 -240 1.5 V/µs V/µs µs Symbol Condition min typ max Unit
I Package Dissipation
2.500 On a glass-epoxy resin print board : 75×75×1.6tmm3 Rth(j-a)=55.8 °C/W
2.240
2.000
Power Dissipation PD (W)
1.500
1.042
1.000
0.500
Without heatsink Rth(j-a)=119.9°C/W
0
0
25
50
75
100
125
150
Ambient Temperature Ta (°C)
I Logic Table
ENABLEA/B
L L H
PHA1/PHB1
H L -
AOUT1/BOUT1
H L OFF
AOUT2/BOUT2
L H OFF
IN0/IN2
L H L H
IN1/IN3
L L H H
Output current
Vref/(10 × Rs) = Iout Vref/(15 × Rs) = Iout × 2/3 Vref/(30 × Rs) = Iout × 1/3 0
I Full Step (4 step sequence) ( IN0 to IN3 = const. )
1 VPHA1
2
3
4 VPHA1
1
2
3
4
VPHB1
VPHB1
sink source
Motor current A-ch
Motor current A-ch
sink source
Motor current B-ch
Motor current B-ch
FWD
sink source
sink source
REW
I Half Step (8 step sequence) ( EX. )
1 2 3 4 5 6 7 8 VPHA1 VPHA1 1 2 3 4 5 6 7 8
VPHB1
VPHB1
VIN0
VIN0
VIN1
VIN1
VIN2
VIN2
VIN3
VIN3
sink source
Motor current A-ch
Motor current A-ch
sink source
Motor current B-ch
Motor current B-ch
FWD
sink source
sink source
REW
I 1-2 Phase Excitation (8 step sequence)
1 2 3 4 5 6 7 8 VPHA1 VPHA1
1 2 3 4 5 6 7 8
VPHB1
VPHB1
VIN0
VIN0
VIN1
VIN1
VIN2
VIN2
VIN3
VIN3
sink source
Motor current A-ch
Motor current A-ch
sink source
Motor current B-ch
Motor current B-ch
FWD
sink source
sink source
REW
I W1-2 Phase Excitation (16 step sequence)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
VPHA1
VPHA1
VPHB1
VPHB1
VIN0
VIN0
VIN1
VIN1
VIN2
VIN2
VIN3
VIN3
sink source
Motor current A-ch
Motor current A-ch
sink source
Motor current B-ch
Motor current B-ch
FWD
sink source
sink source
REW
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(1) An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in this material and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. (2) The technical information described in this material is limited to showing representative characteristics and applied circuit examples of the products. It does not constitute the warranting of industrial property, the granting of relative rights, or the granting of any license. (3) The products described in this material are intended to be used for standard applications or general electronic equipment (such as office equipment, communications equipment, measuring instruments and household appliances). Consult our sales staff in advance for information on the following applications: · Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the products may directly jeopardize life or harm the human body. · Any applications other than the standard applications intended. (4) The products and product specifications described in this material are subject to change without notice for reasons of modification and/or improvement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product Standards in advance to make sure that the latest specifications satisfy your requirements. (5) When designing your equipment, comply with the guaranteed values, in particular those of maximum rating, the range of operating power supply voltage and heat radiation characteristics. Otherwise, we will not be liable for any defect which may arise later in your equipment. Even when the products are used within the guaranteed values, redundant design is recommended, so that such equipment may not violate relevant laws or regulations because of the function of our products. (6) When using products for which dry packing is required, observe the conditions (including shelf life and after-unpacking standby time) agreed upon when specification sheets are individually exchanged. (7) No part of this material may be reprinted or reproduced by any means without written permission from our company.
Please read the following notes before using the datasheets
A. These materials are intended as a reference to assist customers with the selection of Panasonic semiconductor products best suited to their applications. Due to modification or other reasons, any information contained in this material, such as available product types, technical data, and so on, is subject to change without notice. Customers are advised to contact our semiconductor sales office and obtain the latest information before starting precise technical research and/or purchasing activities. B. Panasonic is endeavoring to continually improve the quality and reliability of these materials but there is always the possibility that further rectifications will be required in the future. Therefore, Panasonic will not assume any liability for any damages arising from any errors etc. that may appear in this material. C. These materials are solely intended for a customer's individual use. Therefore, without the prior written approval of Panasonic, any other use such as reproducing, selling, or distributing this material to a third party, via the Internet or in any other way, is prohibited.
2001 MAR