View AN44065A_807058.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

DATA SHEET
Part No. Package Code No.
AN44065A
HSOP042-P-0400D
Publication date: October 2008
SDL00010BEB
1
AN44065A Contents
Overview Features Package Type ........................................................................................................................... 3 ........................................................................................................................... 3 ...................................................................................................................... 3 ............................................................................................................................ 3
Applications
............................................................................................................................... 3 .................................................................................................................. 5 .................................................................................................... 6 ...................................................................................................... 7 ............................................................. 9
Application Circuit Example (Block Diagram) ............................................................................. 4 Pin Descriptions Absolute Maximum Ratings Electrical Characteristics Technical Data Usage Notes
Operating Supply Voltage Range ............................................................................................. 6 Electrical Characteristics (Reference values for design)
.................................................................................................................. 10 ...................................................................................................................... 20
SDL00010BEB
2
AN44065A
AN44065A
Driver IC for Stepping Motor
Overview
AN44065A is a two channels H-bridge driver IC. Bipolar stepping motor can be controlled by a single driver IC. 2-phase,1-2 (type 2) phase, W1-2 phase can be selected.
Features
4-phase input (W 1- and 2-phase excitation enabled; exclusive OR function incorporated for simultaneous-ON prevention) Built-in CR chopping (with frequency selected) Built-in thermal protection and low voltage detection circuit Built-in 5-V power supply
Applications
IC for stepping motor drives
Package
28 pin plastic small outline package with heat sink (SOP type)
Type
Silicon monolithic IC
SDL00010BEB
3
AN44065A
Application Circuit Example
BC1 19 0.01 F BC2 20 PHB1 2 ENABLEB 9 IN3 6 IN2 5
CHARGE PUMP
21 VPUMP 0.01 F Gate Circuit 12 BOUT2
SQ
R
13 RCSB
14 BOUT1 VREFB 24 TJMON 10 PWMSW 28 VREFA 23 PWMSW
BLANK
22 VM2 25 VCC 0.1 F OSC TSD UVLO 47 F 8 VM1 15 AOUT2 0.1 F
16 RCSA R IN0 3 IN1 4 ENABLEA 7 PHA1 1 S5 VOUT 27 0.1 F VREF VM Gate Circuit 26 GND 17 AOUT1 QS
SDL00010BEB
4
AN44065A
Pin Descriptions
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 FIN Pin name PHA1 PHB1 IN0 IN1 IN2 IN3 ENABLEA VM1 ENABLEB TJMON N.C. BOUT2 RCSB BOUT1 AOUT2 RCSA AOUT1 N.C BC1 BC2 VPUMP VM2 VREFA VREFB VCC GND S5 VOUT PWMSW FIN Type Input Input Input Input Input Input Input Power supply Input Output Output Input / Output Output Output Input / Output Output Output Output Output Power supply Input Input Power supply Ground Output Input earth Phase A phase selection input Phase B phase selection input Phase A output torque control 1 Phase A output torque control 2 Phase B output torque control 1 Phase B output torque control 2 Phase A Enable/Disable CTL Motor power supply 1 Phase B Enable/Disable CTL VBE monitor use Phase B motor drive output 2 Phase B current detection Phase B motor drive output 1 Phase A motor drive output 2 Phase A current detection Phase A motor drive output 1 Charge Pump capacitor connection 1 Charge Pump capacitor connection 2 Charge Pump circuit output Motor power supply 2 Phase A torque reference voltage input Phase B torque reference voltage input Signal power supply Signal ground Internal reference voltage (5-V output) PWM frequency selection input Description
SDL00010BEB
5
AN44065A
Absolute Maximum Ratings
A No. 1 2 3 4 5 6 7 8 Parameter Supply voltage1 (Pin 8, Pin 22) Supply voltage2 (Pin 25) Power dissipation Operating ambient temperature Storage temperature Output pin voltage (Pin 12, Pin 14, Pin 15, Pin 17) Motor drive current (Pin 12, Pin 14, Pin 15, Pin 17) Flywheel diode current (Pin 12, Pin 14, Pin 15, Pin 17) Symbol VM VCC PD Topr Tstg VOUT IOUT If Rating 30 - 0.3 to +6 0.717 -20 to +70 -55 to +150 30 1.5 1.5 Unit V V W C C V A A Note *1 *1 *2 *3 *3 *1 *1 *1
Note) *1: Do not apply current or voltage from outside to any pin not listed above. In the circuit current, (+) means the current flowing into IC and (-) means the current flowing out of IC. *2: The power dissipation shown is the value in free-air for the independent IC package. When using this IC, refer to the PD - Ta diagram in the Technical Data and use under the condition not exceeding the allowable value. *3: Except for the storage temperature, operating ambient temperature, and power dissipation all ratings are for Ta = 25C.
Operating Supply Voltage Range
Parameter Operating supply voltage range1 Operating supply voltage range2 Symbol VM VCC Range 18.0 to 28.0 4.5 to 5.5 Unit V V Note
Note) The values under the condition not exceeding the above absolute maximum ratings and the power dissipation.
SDL00010BEB
6
AN44065A
Electrical Characteristics at VM = 24 V, VCC = 5 V
Note) Ta = 25C2C unless otherwise specified.
B No. Output Drivers 1 2 3 4 5
Parameter
Symbol
Conditions
Limits Min VM - 0.75 -- 0.5 -- -- Typ VM - 0.5 0.55 1.0 10 3.7 Max
Unit
Not e
High-level output saturation voltage Low-level output saturation voltage Flywheel diode forward voltage Output leakage current 1 Supply current (with two circuits turned off)
VOH VOL VDI ILEAK1 IM
I = -1.0 A I = 1.0 A I = 1.0 A VOUT = 30 V, VRCS = 0 V ENABLEA = ENABLEB = 5 V
-- 0.825 1.5 50 5.7
V V V A mA
-- -- -- -- --
I/O Block 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Supply current High-level IN input voltage Low-level IN input voltage High-level IN input current Low-level IN input current High-level PHA1/PHB1 input voltage Low-level PHA1/PHB1 input voltage High-level PHA1/PHB1 input current Low-level PHA1/PHB1 input current High-level ENABLEA/ENABLEB input voltage Low-level ENABLEA/ENABLEB input voltage High-level ENABLEA/ENABLEB input current Low-level ENABLEA/ENABLEB input current High-level PWMSW input voltage Low-level PWMSW input voltage High-level PWMSW input current Low-level PWMSW input current ICC VINH VINL IINH IINL VPHAH VPHBH VPHAL VPHBL IPHAH IPHBH IPHAL IPHBL VENABLEAH VENABLEBH VENABLEAL VENABLEBL ENABLEA = ENABLEB = 5 V -- -- IN0 = IN1 = IN2 = IN3 = 5 V IN0 = IN1 = IN2 = IN3 = 0 V -- -- PHA1 = PHB1 = 5 V PHA1 = PHB1 = 0 V -- -- -- 2.2 GND - 10 - 15 2.2 GND 25 - 15 2.2 GND - 10 - 15 2.2 GND 25 - 15 1.4 -- -- -- -- -- -- 50 -- -- -- -- -- -- -- 50 -- 2.2 VCC 0.6 10 15 VCC 0.6 100 15 VCC 0.6 10 15 VCC 0.6 100 15 mA V V A A V V A A V V A A V V A A -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
IENABLEAH ENABLEA = NABLEB = 5 V IENABLEBH IENABLEAL ENABLEA = ENABLEB = 0 V IENABLEBL VPWMSWH VPWMSWL IPWMSWH IPWMSWL -- -- PWMSW = 5 V PWMSW = 0 V
SDL00010BEB
7
214406500705100
AN44065A
Electrical Characteristics at VM = 24 V, VCC = 5 V (continued)
Note) Ta = 25C2C unless otherwise specified.
B No.
Parameter
Symbol
Conditions
Limits Min Typ Max
Unit
Note
Torque Control Block 23 24 25 26 27 28 29 Input bias current PWM frequency 1 PWM frequency 2 Pulse blanking time Cmp threshold H (100%) Cmp threshold C (67%) Cmp threshold L (33%) IREFA IREFB fPWM1 fPWM2 TB VTH VTC VTL VREFA = VREFB = 5 V PWMSW = 0 V PWMSW = 5 V VREFA = VREFB = 0 V IN0 = IN1 = 0 V IN2 = IN3 = 0 V IN0 = 5 V, IN1 = 0 V IN2 = 5 V, IN3 = 0 V IN0 = 0 V, IN1 = 5 V IN2 = 0 V, IN3 = 5 V 70 38 19 0.6 479 308 151 99.5 58 29 1.2 503 333 167 130 78 39 1.8 528 359 184 A kHz kHz s mV mV mV -- -- -- -- -- -- --
Reference Voltage Block 30 31 Reference voltage Output impedance VS5 VOUT VM = 24 V, IS5 VOUT = -2.5 mA ZS5 VOUT VM = 24 V, IS5 VOUT = -5 mA 4.5 -- 5.0 14 5.5 21 V -- --
SDL00010BEB
8
AN44065A
Electrical Characteristics (Reference values for design) at VM = 24 V, VCC = 5 V
Note) Ta = 25C2C unless otherwise specified.
B No. Output Drivers 32 33 34
Parameter
Symbol
Test circuits
Conditions
Reference Min Typ Max
Unit
Note
Output slew rate 1 Output slew rate 2 Dead time
VTr VTf TD TSDon TSD
-- -- --
Rising edge Falling edge --
-- -- --
240 240 2.2
-- -- --
V/s V/s s C C
-- -- --
Thermal Protection 35 36 Thermal protection operating temperature Thermal protection hysteresis width -- -- -- -- -- -- 155 45 -- -- -- --
Note) The above characteristics are reference values for design of the IC and are not guaranteed by inspection. If a problem does occur related to these characteristics, Panasonic will respond in good faith to user concerns.
SDL00010BEB
9
AN44065A
Technical Data
I/O block circuit diagrams and pin function descriptions
Note) The characteristics listed below are reference values based on the IC design and are not guaranteed.
Pin No.
Waveform and voltage
Internal circuit
Impedance
Description
Pin 1 PHA1 2 PHB1 28 PWMSW
1 2 28
--
1
100k
Pin1: Phase A phase selection input 2: Phase B phase selection input 28: PWM frequency selection input
100k
3 4 5 6 7 9
Pin 3 IN0 4 IN1 5 IN2 6 IN3 7 ENABLEA 9 ENABLEB
-- 3
Pin3: Phase A output torque control 1 4: Phase A output torque control 2 5: Phase B output torque control 1 6: Phase B output torque control 2 7: Phase A Enable/Disable CTL 9: Phase B Enable/Disable CTL
Pin 12 BOUT2 14 BOUT1
12 13 14
12 -- 0.6
Pin12: Phase B motor drive output 2 13: Phase B current detection 14: Phase B motor drive output 1
RCSB
13
SDL00010BEB
10
AN44065A
Technical Data (continued)
I/O block circuit diagrams and pin function descriptions (continued)
Note) The characteristics listed below are reference values based on the IC design and are not guaranteed.
Pin No.
Waveform and voltage
Internal circuit
Impedance
Description
Pin 15 AOUT2 17 AOUT1
15 16 17
--
15 0.6
Pin15: Phase A motor drive output 2 16: Phase A current detection 17: Phase A motor drive output 1
RCSA
16
19
--
BC1
19
Pin19: Charge Pump capacitor connection 1
20 21
--
BC2
VPUMP
Pin20: Charge Pump capacitor connection 2 21: Charge Pump circuit output
20
21
SDL00010BEB
11
AN44065A
Technical Data (continued)
I/O block circuit diagrams and pin function descriptions (continued)
Note) The characteristics listed below are reference values based on the IC design and are not guaranteed.
Pin No.
Waveform and voltage
Internal circuit
Pin 23 VREFA
Impedance
Description
23
24 VREFB
23 24
--
Pin23: Phase A torque reference voltage input 50.25k 24: Phase B torque reference voltage input
10
--
TJMON
10
Pin10: VBE monitor use
27
--
27 S5 VOUT
14
Pin27: Internal reference voltage (5-V output)
SDL00010BEB
12
AN44065A
Technical Data (continued)
I/O block circuit diagrams and pin function descriptions (continued)
Note) The characteristics listed below are reference values based on the IC design and are not guaranteed.
Pin No.
Waveform and voltage
Internal circuit
Impedance
Description
VCC (Pin 25) VM(Pin 8, Pin 22) Symbols -- Diode Zener diode Ground (FIN) -- --
SDL00010BEB
13
AN44065A
Technical Data (continued)
Control mode 1. Truth table ENABLEA/ENABLEB "L" "L" "H" IN0/IN2 "L" "H" "L" "H" IN1/IN3 "L" "L" "H" "H" PHA1/PHB1 "H" "L" -- AOUT1/BOUT1 "H" "L" OFF Output Current (VREF / 10) x (1 / Rs *) = IOUT (VREF / 10) x (1 / Rs *) x (2 / 3) = IOUT (VREF / 10) x (1 / Rs *) x (1 / 3) = IOUT 0 AOUT2/BOUT2 "L" "H" OFF
Note) 1. ENABLEA/ENABLEB = "H" or, IN0 = IN1 = "H"/IN2 = IN3 = "H" , output = OFF 2.*: Rs: current detection region
SDL00010BEB
14
AN44065A
Technical Data (continued)
Control mode (continued) 2. drive of full step (4steps sequence) (IN0 to IN3 = const.)
1 2 3 4 1 2 3 4
VPHA1
VPHA1
VPHB1
VPHB1
flow-in
flow-out
flow-in
FWD
flow-in
B-ch. Motor current
B-ch. Motor current
flow-out
flow-in
A-ch. Motor current
flow-out
A-ch. Motor current
flow-out
REV
SDL00010BEB
15
AN44065A
Technical Data (continued)
Control mode (continued) 3. drive of half step (8 steps sequence) (Ex.)
12345678 12345678
VPHA1 VPHB1 VIN0 VIN1
VPHA1 VPHB1 VIN0 VIN1
VIN2 VIN3
VIN2 VIN3
flow-in
flow-in
FWD
flow-in
B-ch. Motor current
flow-out
B-ch. Motor current
flow-out
flow-in
A-ch. Motor current
flow-out
A-ch. Motor current
flow-out
REV
SDL00010BEB
16
AN44065A
Technical Data (continued)
Control mode (continued) 4. 1-2 phase excitation (8 steps sequence) (Ex.)
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
VPHA1 VPHB1 VIN0 VIN1
VPHA1 VPHB1 VIN0 VIN1
VIN2 VIN3
VIN2 VIN3
flow-in
flow-in
flow-in
B-ch. Motor current
flow-out
B-ch. Motor current
flow-out
flow-in
A-ch. Motor current
flow-out
A-ch. Motor current
flow-out
FWD
REV
SDL00010BEB
17
AN44065A
Technical Data (continued)
Control mode (continued) 5. W1-2 phase excitation (16 steps 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 VPHB1 VIN0 VIN1 VIN2 VIN3
VPHA1 VPHB1 VIN0 VIN1 VIN2 VIN3
flow-in
flow-in
FWD
flow-in
B-ch. Motor current
flow-out
B-ch. Motor current
flow-out
flow-in
A-ch. Motor current
flow-out
A-ch. Motor current
flow-out
REV
SDL00010BEB
18
AN44065A
Technical Data (continued)
PD -- Ta diagram
SDL00010BEB
19
AN44065A
Usage Notes
1. Perform thermal design work with consideration of a sufficient margin to keep the power dissipation based on supply voltage, load, and ambient temperature conditions. (The IC is recommended that junctions are designed below 70% to 80% of Absolute Maximum Rating.) 2. The protection circuit is incorporated for the purpose of securing safety if the IC malfunctions. Therefore, design the protection circuit so that the protection circuit will not operate under normal operating conditions. The temperature protection circuit, in particular, may be destructed before the temperature protection circuit operates if the area of safety operation of the device or the maximum rating is exceeded instantaneously due to the short-circuiting between the output pin and VM pin or a ground fault caused by the output pin and ground pin. 3. Pay utmost attention to the pattern layout in order to prevent the IC from destruction resulting from the short-circuiting of pins. See Pin Descriptions for allocations of the pins of the IC. 4. When driving a motor coil or transformer (L) load, the device may be destructed as a result of a negative or excessive voltage generated at the time of turning the load on and off. Unless otherwise provided in the specifications, do not apply any negative or excessive voltage. 5. Do not make mistakes in the PCB mounting direction. If power is supplied with the pins mounted in the wrong direction, the IC may be destructed. 6. The IC may be destructed by the solder bridge between the pins of semiconductor devices. Fully make a visual check on the PCB before supplying power. Furthermore, the IC may be destructed if conductive foreign matters like solder chips are stuck to the IC during transportation after PCB mounting. Therefore, conduct full technical verification of the mounting quality of the IC.
7. The IC is destructed under an abnormal condition, such as the short-circuiting between the output and VM pins, output and ground pins, or output pins (i.e., load short-circuiting), in which case smoke may be generated. Pay utmost attention to the use of the IC. Pay special attention to the following pins so that they are not short-circuited with the VM pin, ground pin, other output pin, or current detection pin. (1) AOUT1 (pin 17), AOUT2 (pin 15), BOUT1 (pin 14), BOUT2 (pin 12) (2) BC2 (pin 20), VPUMP (pin 21) (3) VM1 (pin 8), VM2 (pin 22), VREG (pin 25) (4) RCSA (pin 16), RCSB (pin 13) The higher the current capacity of power supply is, the higher the possibility of the above destruction or smoke generation. Therefore, it is recommended to take safety countermeasures, such as the use of a fuse. 8. When using the IC for model expansion or new sets, be sure to make full safety checks including a long-term reliability check on each set. 9. Set the value of the capacitor between the VPUMP and GND pins so that the voltage on the VPUMP pin (pin 21) will not exceed 40 V in any case regardless of whether it is a transient phenomenon or not while the motor standing by is started. 10. This IC employs a PWM drive method that switches the high-current output of the output transistor. Therefore, the IC is apt to generate noise that may cause the IC to malfunction or have fatal damage. To prevent these problems, the power supply must be stable enough. Therefore, the capacitance between the VCC and GND pins must be a minimum of 0.1 F and the one between the VM and GND pins must be a minimum of 47 F and as close as possible to the IC so that PWM noise will not cause the IC to malfunction or have fatal damage.
SDL00010BEB
20
AN44065A
Usage Notes (continued)
11. In order to prevent mistakes in current detection resulting noise, this IC is provided with a pulse blanking time of 1.2 s (typ.). The motor current will not be less than the current determined by blanking time. Pay utmost attention at the time of minute current control. The graph on the right-hand side shows the relationship between the pulse blanking time and minute current value. The increase or decrease in the motor current is determined by the resistance of the internal winding of the motor.
RCS current waveform while in normal operation
Set current
RCS current waveform when the set current is less than the minimum current
Minimum current Set current
TB 1 fPWM
fPWM: PWM frequency (See No. 24,25 of Electrical Characteristics.) TB: Pulse blanking time (See No. 26 of Electrical Characteristics.)
12. A high current flows into the IC. Therefore, the common impedance of the PCB pattern cannot be ignored. Take the following points into consideration and design the PCB pattern of the motor. A high current flows into the line between the VM1 (pin 8) and VM2 (pin 22) pins. Therefore, noise is generated with ease at the time of switching due to the inductance (L) of the line, which may result in the malfunctioning or destruction of the IC (see the circuit diagram on the left-hand side). As shown in the circuit diagram on the right-hand side, the escape way of the noise is secured by connecting a capacitor to the connector close to the VM pin of the IC. This makes it possible to suppress the direct VM pin voltage of the IC. Make the settings as shown in the circuit diagram on the right-hand side as much as possible.
Noise is generated with ease
Recommended PCB VM GND
Low spike amplitude due to the capacitance between the VM pin and ground pin
VM VM L
IC RCS C C
IC RCS
GND
GND
SDL00010BEB
GND
VM
L
21
AN44065A
Usage Notes (continued)
13. In the case of measuring the chip temperature of the IC,measure the voltage of TJMON (pin 10) and presume chip temperature from following data. Use the following data as reference data. Before applying the IC to a product, conduct a sufficient reliability test of the IC along with the evaluation of the product with the IC incorporated. The temperature characteristic of TJMON VBE[V]
VBE/temp = -1.85 [mV/C]
0
Temp [C] 150
14. Power Supply Sequence If two types of power supply are used Rise: This IC is recommended rise of 5 V power supply before rise of 24 V power supply. Fall : Although there is no particular rule, check that VM fall time is about 1sec. When recommended sequence is difficult, take the diagram below indicates into consideration and design. Also, rise slew rate design VM: below 0.1 V/s, VCC: below 0.1 V/s Power Supply
VM
VCC
Delay: below 100 msec If one type of power supply is used Rise slew rate design VM: below 0.1 V/s 15. Check the risk that is caused by the failure of external components.
1 sec
time
SDL00010BEB
22
Request for your special attention and precautions in using the technical information and semiconductors described in this book
(1) If any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and regulations of the exporting country, especially, those with regard to security export control, must be observed. (2) The technical information described in this book is intended only to show the main characteristics and application circuit examples of the products. No license is granted in and to any intellectual property right or other right owned by Panasonic Corporation or any other company. Therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any other company which may arise as a result of the use of technical information described in this book. (3) The products described in this book 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 book are subject to change without notice for 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 range of absolute maximum rating and the guaranteed operating conditions (operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed the range of absolute maximum rating on the transient state, such as power-on, power-off and mode-switching. 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, take into the consideration of incidence of break down and failure mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products. (6) Comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (ESD, EOS, thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. When using products for which damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages. (7) This book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of our company. 20080805

▲Up To Search▲

Price & Availability of AN44065A

	To Download AN44065A Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .