Thick-Film Hybrid STK672-050-E Unipolar Constant-current Cho

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

Thick-Film Hybrid STK672-050-E Unipolar Constant-current Cho

Datasheet Thumbnail

Top Searches for this datasheet

Ordering number EN5228D
Thick-Film Hybrid
STK672-050-E
Unipolar Constant-current Chopper (external excitation PWM) Circuit with Built-in Microstepping Controller
Stepping Motor Driver (sine wave drive) Output Current 3.0A heat sink*)
STK672-050-E stepping motor driver hybrid that uses power MOSFETs output stage. includes builtin microstepping controller based unipolar constant-current system. STK672-050-E supports application simplification standardization providing built-in phase distribution stepping motor controller. supports five excitation methods: phase, phase, W1-2 phase, 2W1-2 phase, 4W1-2 phase excitations, provide control basic stepping angle stepping motor divided into 1/16 step units. also allows motor speed controlled with only clock signal. this hybrid allows designers implement systems that provide high motor torques, vibration levels, noise, fast response, high-efficiency drive.
Applications
Facsimile stepping motor drive (send receive) Paper feed optical system stepping motor drive copiers Laser printer drum drive Printer carriage stepping motor drive plotter drive Other stepping motor applications
Note*: Conditions: VCC1 24V, 2.0A, 2W1-2 excitation mode.
SANYO Semiconductor Co.,Ltd. products described contained herein are, with regard "standard application", intended general electronics equipment (home appliances, equipment, communication device, office equipment, industrial equipment etc.). products mentioned herein shall intended "special application" (medical equipment whose purpose sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level reliability directly threaten human lives case failure malfunction product cause harm human bodies, shall they grant guarantee thereof. should intend products applications outside standard applications customer considering such and/or outside scope intended standard applications, please consult with prior intended use. there consultation inquiry before intended use, customer shall solely responsible use. Specifications SANYO Semiconductor Co.,Ltd. products described contained herein stipulate performance, characteristics, functions described products independent state, guarantees performance, characteristics, functions described products mounted customer' products equipment. verify symptoms states that cannot evaluated independent device, customer should always evaluate test devices mounted customer' products equipment.
No.5228-1/19
STK672-050-E
Features
implement stepping motor drive systems simply providing power supply clock pulse generator. <Control Block Features> five drive types selected with drive mode settings (M1, phase excitation drive phase excitation drive W1-2 phase excitation drive 2W1-2 phase excitation drive 4W1-2 phase excitation drive Provides four freely selectable modes vector locus during microstepping drive: circular mode, inside mode, outside modes. Phase retention even excitation switched. excitation phase state verified real time using MO1, MO2, signal output pins. input counter block selected following high/low setting input pin. Rising edge only Both rising falling edges RETURN input pins include built-in malfunction prevention circuits external pulse noise. ENABLE RESET pins provided. These Schmitt trigger inputs with built-in (typical) pull-up resistors. noise generation difference between phase time constants during motor hold since external excitation used. Microstepping operation supported even small motor currents, since reference voltage Vref value between 1/2VCC2. <Driver Block> External excitation drive allows wide operating supply voltage range (VCC1 45V) used. Current detection resistor (0.2) built-in hybrid itself. Power MOSFETs adopted drive loss. Provides motor output drive current 3.0A.
Specifications
Absolute Maximum Ratings 25°C
Parameter Maximum supply voltage Maximum supply voltage Input voltage Output current Repeated avalanche capacity Allowable power dissipation Operating substrate temperature Junction temperature Storage temperature Symbol VCC1 VCC2 Tstg signal signal Logic input pins 0.5s, pulse, when VCC1 applied. Load: 10mH each phase. Conditions Ratings -0.3 +7.0 -0.3 +7.0 +125 Unit
Allowable Operating Ranges 25°C
Parameter Supply voltage Supply voltage Input voltage Phase driver withstand voltage Output current Symbol VCC1 VCC2 VDSS Tr1, (the outputs) Duty With signals applied With signals applied Conditions Ratings VCC2 (min) Unit
No.5228-2/19
STK672-050-E
Electrical Characteristics 25°C, VCC1 24V, VCC2
Parameters Control supply current Output saturation voltage Average output current diode forward voltage [Control Inputs] Input voltage Except Vref Except Vref Except Vref Except Vref Symbols Vsat Ioave Conditions with ENABLE held low. Load: 3.8mH each phase, Vref 0.6V 0.45 Rating 0.50 0.55 unit
Input current [Vref Input Pin] Input voltage Input current [Control Outputs] Output voltage [Current Distribution Ratio 2W1-2, W1-2, 2W1-2, W1-2 2W1-2 2W1-2, W1-2, 2W1-2 2W1-2, W1-2 2W1-2 frequency
-3mA, pins MOI, MO1, +3mA, pins MOI, MO1,
Vref Vref Vref Vref Vref Vref Vref Vref
Note: constant-voltage power supply must used. design target value shown current distribution ratio.
Package Dimensions
unit:mm (typ) 4164
67.0 60.0
16.0 25.5
(9.0)
11.0
No.5228-3/19
VCC2
Vref
Internal Block Diagram
Current distribution ratio switching
Excitation mode control
Phase advance counter
Rise/fall detection switching Pseudo-sine wave generator
RETURN
Rise detection
RESET
Phase excitation drive signal generation
Excitation state monitor
STK672-050-E
ENABLE
oscillator
Reference clock generation
control
ITF02390
No.5228-4/19
STK672-050-E
Test Circuit Diagrams
Vsat
VCC2 STK672-050-E Vref=2.5V VCC2
ITF02391
VCC1
Start
STK672-050-E
ITF02392
IIH,
VCC2
Ioave, ICC,
VCC2
STK672-050-E
VCC1
Start
RESET RETURN ENABLE Vref
Vref=1V
when measuring
VCC2
STK672-050-E
VCC1
ITF02393
ITF02394
When measuring Ioave: With `a', Vref 0.6V When measuring With `b', Vref When measuring ICC: ENABLE
No.5228-5/19
STK672-050-E
Power-on Reset
application must perform power-on reset operation when VCC2 power first applied this hybrid Application circuit that used 2W1-2 phase excitation (microstepping operation) mode.
VCC2=5V VCC1=10V Two-phase stepping motor
VCC2=5V ENABLE RESET STK672-050-E
100F higher
ITF02395
VCC2=5V
Vref
Setting Motor Current
motor current Vref voltage hybrid following formula gives relationship between Vref. Vref/Rs, hybrid internal current detection resistor (0.2 ±3%) Applications motor currents from current (0.05 0.1A) duty frequency oscillator limit allowable operating range, 3.0A
Ioave Motor current waveform
A12408
Function Table
phase excitation phase excitation phase excitation W1-2 phase excitation W1-2 phase excitation 2W1-2 phase excitation Phase switching clock edge timing 2W1-2 phase excitation 4W1-2 phase excitation Rising edge only Rising falling edges
Forward
Reverse
ENABLE RESET
Motor current when Active
No.5228-6/19
STK672-050-E
Printed Circuit Board Design Recommendations
This hybrid grounds, pins (pins (pin 22). These connected internally hybrid power supplies required: motor drive supply supply hybrid itself. ground connections these supplies good, motor current waveforms become unstable, motor noise increase, vibration levels increase. appropriate wiring these grounds. Here present methods implementing these ground connections. grounds motor drive supply hybrid supply connected immediate vicinity power supplies: shorted power supply, connect only line pins hybrid Also, sure that problems occur voltage drops common impedances. specifications, this must VCC2 ±5%. current waveforms will more stable Vref ground connected initial values, 470F over over Locate close hybrid possible, capacitor ground line must short possible.
Stepping motor Motor drive power -supply 470F over power supply -STK672-050-E
VCC2
over
Vref
Oscillator circuit (CLK)
ITF02396
grounds motor drive supply hybrid supply separated: Insert capacitor (C1) 100F over close possible hybrid capacitor ground line must short possible. capacitor included necessary. ground line should also short possible.
Stepping motor Motor drive power -supply Separation power supply -470F over STK672-050-E
VCC2
over
Vref
Oscillator circuit (CLK)
ITF02397
No.5228-7/19
STK672-050-E
Functional Description
External Excitation Chopper Drive Block Description
VCC1
IOFF
Enable (control signal) Current divider Vref
Divider
oscillator 800kHz
45kHz
MOSFET
Latch circuit
Noise filter
ITF02398
Driver Block Basic Circuit Structure Since this hybrid adopts external excitation method, external oscillator circuit required. When high level input basic driver block circuit shown figure MOSFET turned comparator input will comparator output will low. Since signal with period will input, output will high, MOSFET will turned initial value. current flowing MOSFET passes through generates potential difference Then, when potential Vref potential become same, comparator output will invert, reset signal output will invert level. Then, MOSFET will turned energy stored will induced current IOFF will regenerated power supply. This state will maintained until time when input latch circuit occurs. this manner, output turned repeatedly reset signals, thus implementing constant current control. resistor capacitor comparator input spike removal circuit elements synchronize with frequency. Since this hybrid uses fixed frequency external excitation method same time also adopts synchronized technique, suppress noise associated with holding position when motor locked. Input Functions
Symbol RETURN ENABLE RESET Vref Function Phase switching clock Rotation direction setting (CW/CCW) Forced phase origin return Output cutoff Excitation mode setting Vector locus setting System reset Current setting circuit type Built-in pull-up resistor CMOS Schmitt trigger input Built-in pull-up resistor CMOS Schmitt trigger input Built-in pull-up resistor CMOS Schmitt trigger input Built-in pull-up resistor CMOS Schmitt trigger input Built-in pull-up resistor CMOS Schmitt trigger input Built-in pull-up resistor CMOS Schmitt trigger input Built-in pull-up resistor CMOS Schmitt trigger input Operational amplifier input
No.5228-8/19
STK672-050-E
Input Signal Functions Timing (phase switching clock) Input frequency range: 50kHz Minimum pulse width: Duty: (However, minimum pulse width takes precedence when high.) circuit type: Built-in pull-up resistor (20k, typical) CMOS Schmitt trigger structure Built-in multi-stage noise rejection circuit Function: When high open: phase excited (driven) advanced step each rising edge. When low: phase advanced step both rising falling edges, total steps cycle. Input Acquisition Timing Low)
input
System clock
Phase excitation counter clock
Excitation counter up/down
Control output timing
Control output switching timing
A06850
(Method setting rotation direction) circuit type: Built-in pull-up resistor (20k, typical) CMOS Schmitt trigger structure Function: When low: motor turns clockwise direction. When high: motor turns counterclockwise direction. Notes: When low, input must changed about 6.25s before after rising falling edge input. RETURN (Forcible return origin currently excited phase) circuit type: Built-in pull-up resistor (20k, typical) CMOS Schmitt trigger structure Built-in noise rejection circuit Notes: currently excited (driven) phase forcibly moved origin switching this input from high. Normally, this input unused, must left open connected VCC2. ENABLE (Controls on/off state excitation drive outputs selects either operating hold internal state this hybrid IC.) circuit type: Built-in pull-up resistor (20k, typical) CMOS Schmitt trigger structure Function: When ENABLE high open: Normal operating state When ENABLE low: This hybrid goes hold state excitation drive output (motor current) forcibly turned off. this mode, hybrid system clock stopped inputs other than reset input have effect hybrid state.
No.5228-9/19
STK672-050-E
(Excitation mode input edge timing selection) circuit type: Built-in pull-up resistor (20k, typical) CMOS Schmitt trigger structure Function:
phase excitation phase excitation phase excitation W1-2 phase excitation W1-2 phase excitation 2W1-2 phase excitation Phase switching clock edge timing 2W1-2 phase excitation 4W1-2 phase excitation Rising edge only Rising falling edges
Valid mode setting timing: Applications must change mode period before after signal rising falling edge. Mode Setting Acquisition Timing
input
System clock
Mode setting
Mode switching clock
Mode switching timing
Hybrid internal setting state
Phase excitation clock
Excitation counter up/down
A06851
(Microstepping mode rotation vector locus setting)
Mode Circular
Phase
Circular
page details current division ratio.
Phase
ITF02399
RESET (Resets parts system.) circuit type: Built-in pull-up resistor (20k, typical) CMOS Schmitt trigger structure Function: circuit states their initial values setting RESET low. (Note that pulse width must least 10s.) this time, phases their origin, regardless excitation mode. output current goes about after reset released. Notes: When power first applied this hybrid Vref must established applying reset. Applications must apply power reset when VCC2 power supply first applied. Vref (Sets current level used reference constant-current detection.) circuit type: Analog input structure Function: Constant-current control applied motor excitation current 100% rated current applying voltage less than control system power supply voltage VCC2 minus 2.5V. Applications apply constant-current control proportional Vref voltage, with this value 2.5V upper limit.
No.5228-10/19
STK672-050-E
Output Functions
Symbol MO1, Function Phase excitation origin monitor Phase excitation state monitor circuit type Standard CMOS structure Standard CMOS structure
Output Signal Functions Timing (Motor phase excitation outputs) Function: phase phase excitation modes, 3.75s (typical) interval between output signal transition times. MO1, MO2, (Phase excitation state monitors) circuit type: Standard CMOS structure Function: Output current phase excitation output state.
Phase coordinate Phase Phase Phase Phase
outputs when each phase origin, outputs otherwise. Current division ratios Values provided reference purposes.
Mode Setting Circular 2W1-2 2W1-2 2W1-2 Current division ratio 4W1-2 2W1-2 2W1-2 2W1-2 2W1-2
1/16 2/16 3/16 4/16 5/16 6/16 7/16 8/16 9/16 10/16 11/16 12/16 13/16 14/16 Units Number steps
[Load conditions] VCC1 24V, VCC2 3.5/3.8mH
No.5228-11/19
STK672-050-E
Phase States During Excitation Switching Excitation phases before after excitation mode switching <clockwise direction>
2W1-2 phase phase W1-2 phase phase phase phase phase phase phase W1-2 phase phase 2W1-2 phase phase W1-2 phase phase 2W1-2 phase
2W1-2 phase phase
2W1-2 phase W1-2 phase 1816 1412 161514 W1-2 phase 2W1-2 phase
W1-2 phase phase
Excitation phase according first clock input pulse after changing excitation mode setting Excitation phase immediately before setting excitation mode
A12412
No.5228-12/19
STK672-050-E
Excitation phases before after excitation mode switching <counterclockwise direction>
2W1-2 phase phase W1-2 phase phase phase phase phase phase phase W1-2 phase
A12413
2W1-2 phase phase
2W1-2 phase W1-2 phase 1816 1412 161514 W1-2 phase 2W1-2 phase
1716
W1-2 phase phase phase W1-2 phase
phase 2W1-2 phase
phase 2W1-2 phase
No.5228-13/19
STK672-050-E
Excitation Time Timing Charts rising edge operation
Phase Excitation Timing Chart
Phase Excitation Timing Chart
RESET
MOSFET gate signal
RESET
MOSFET gate signal Comparator reference voltage
100%
100%
Comparator reference voltage
Vref
100%
Vref
100%
Vref
Vref
W1-2 Phase Excitation Timing Chart
2W1-2 Phase Excitation Timing Chart
RESET
MOSFET gate signal
RESET
MOSFET gate signal Comparator reference voltage
100%
100%
Comparator reference voltage
Vref
100%
Vref
100%
Vref
Vref
ITF02400
No.5228-14/19
STK672-050-E
rising falling edge operation
Phase Excitation Timing Chart
W1-2 Phase Excitation Timing Chart
RESET
MOSFET gate signal Comparator reference voltage
RESET
MOSFET gate signal
100%
100%
Comparator reference voltage
Vref
100%
Vref
100%
Vref
Vref
2W1-2 Phase Excitation Timing Chart
4W1-2 Phase Excitation Timing Chart
RESET
MOSFET gate signal
RESET
MOSFET gate signal Comparator reference voltage
100%
100%
Comparator reference voltage
Vref
100%
Vref
100%
Vref
Vref
ITF02401
No.5228-15/19
STK672-050-E
Thermal Design
<Hybrid Average Internal Power Loss main elements internal this hybrid with large average power losses current control devices, regenerative current diodes, current detection resistor. Since sine wave drive used, average power loss during microstepping drive approximated applying waveform factor 0.64 square wave loss during phase excitation. losses various excitation modes follows. phase excitation
Pd2EX (Vsat+Vdf) fclock (Vsat t1+Vdf
Pd1-2EX 0.64 {(Vsat+Vdf)
phase excitation
fclock (Vsat t1+Vdf t3)} fclock (Vsat t1+Vdf t3)}
W1-2 phase excitation PdW1-2EX 0.64 {(Vsat+Vdf)
2W1-2 phase excitation Pd2W1-2EX 0.64 {(Vsat+Vdf) fclock (Vsat t1+Vdf t3)}
4W1-2 phase excitation Pd4W1-2EX 0.64 {(Vsat+Vdf)
fclock (Vsat t1+Vdf t3)}
Here, determined from same formulas excitation methods.
0.48 IOH) 0.48
0.48 0.48
However, formula differs with excitation method. phase excitation
fclock
(t1+t3)
phase excitation
fclock
W1-2 phase excitation
fclock
2W1-2 phase excitation 4W1-2 phase excitation
fclock
A12414
Motor Phase Current Model Figure Phase Excitation) fclock Vsat input frequency (Hz) voltage drop power MOSFET current detection resistor voltage drop body diode current detection resistor Phase current peak value Phase current rise time VCC1 Supply voltage applied motor Constant-current operating time Motor inductance Phase switching current regeneration time Motor winding resistance
No.5228-16/19
STK672-050-E
<Determining Size Hybrid Heat Sink> Determine heat sink from average power loss determined previous item. max: Hybrid substrate temperature (°C) [°C/W] Application internal temperature (°C) PdEX: Hybrid internal average loss Determine from above formula then size cm2) heat sink from graphs shown below. ambient temperature device will vary greatly according flow conditions within application. Therefore, always verify that size heat sink adequate assure that Hybrid back surface (the aluminum plate side) will never exceed 105°C, whatever operating conditions are.
Heat sink thermal resistance, °C/W
c-a= (°C/W) max=105°C
Heat sink thermal resistance, °C/W
Vertical standing type Natural convection cooling
50°C
23.0 (°C/W)
ITF02402
23.0 (°C/W)
internal average power loss,
Heat sink surface area,
ITF02403
Next determine usage conditions with heat sink determining allowable hybrid internal average loss from thermal resistance hybrid substrate, namely 18.5°C/W. 105°C ambient temperature 50°C PdEX 2.9W 18.5 PdEX 3.5W 18.5
105°C ambient temperature 40°C
This hybrid used with heat sink long used operating conditions below losses listed above. (See curve graph page 19.) <Hybrid internal power element (MOSFET) junction temperature calculation> junction temperature, each device determined from loss each transistor thermal resistance j-c. (°C) Here, determine Pds, loss each transistor, determining PdEX each excitation mode. PdEX/4 steady-state thermal resistance power MOSFET 5°C/W.
No.5228-17/19
STK672-050-E
VCC2
Tc=25°C
VCC2=5V
frequency,
ITF02404
frequency,
Supply voltage, VCC2
Substrate temperature,
ITF02405
Vsat
VCC2=5V
VCC2=5V
Output saturation voltage, Vsat
Phase output current,
ITF02406
ITF02407
Phase output current,
diode forward voltage,
VCC1
Test motor: PK264-02B VCC1=24V VCC2=5V
Test motor: PK264-01B 2.0A
Tc=25°C VCC2=5V Phase output current,
Motor output current,
1.5A
2.0A
1.0A
1.0A
0.5A
Vref=0V
ITF02408
Vref=0V
ITF02409
Supply voltage, VCC1
Substrate temperature,
VCC1
Test motor: PK264-02B Tc=25°C, VCC2=5V Motor common current With phase held.
Substrate temperature increase,
Motor current,
Test motor: PK264-02B VCC1=24V VCC2=5V
W1-2EX, IOH=2.0A
2.0A
IOH=1.0A
ITF02410
ITF02411
Input
Supply voltage, VCC1
No.5228-18/19
STK672-050-E
Vref
Substrate temperature increase,
Test motor: PK264-02B Tc=25°C VCC1=24V VCC2=5V hold mode
Pd(typ)
Motor current setting voltage, Vref
Free standing with heat sink
ITF02413
ITF02412
Motor output current, IOH, IOL, Ioave
Power loss,
SANYO Semiconductor Co.,Ltd. assumes responsibility equipment failures that result from using products values that exceed, even momentarily, rated values (such maximum ratings, operating condition ranges, other parameters) listed products specifications SANYO Semiconductor Co.,Ltd. products described contained herein. SANYO Semiconductor Co.,Ltd. strives supply high-quality high-reliability products, however, semiconductor products fail malfunction with some probability. possible that these probabilistic failures malfunction could give rise accidents events that could endanger human lives, trouble that could give rise smoke fire, accidents that could cause damage other property. When designing equipment, adopt safety measures that these kinds accidents events cannot occur. Such measures include limited protective circuits error prevention circuits safe design, redundant design, structural design. event that SANYO Semiconductor Co.,Ltd. products described contained herein controlled under applicable local export control laws regulations, such products require export license from authorities concerned accordance with above law. part this publication reproduced transmitted form means, electronic mechanical, including photocopying recording, information storage retrieval system, otherwise, without prior written consent SANYO Semiconductor Co.,Ltd. information described contained herein subject change without notice product/technology improvement, etc. When designing equipment, refer "Delivery Specification" SANYO Semiconductor Co.,Ltd. product that intend use. Information (including circuit diagrams circuit parameters) herein example only; guaranteed volume production. Upon using technical information products described herein, neither warranty license shall granted with regard intellectual property rights other rights SANYO Semiconductor Co.,Ltd. third party. SANYO Semiconductor Co.,Ltd. shall liable claim suits with regard third party's intellectual property rights which resulted from technical information products mentioned above.
This catalog provides information June, 2008. Specifications information herein subject change without notice.
No.5228-19/19

Thick-Film Hybrid STK672-050-E Unipolar Constant-current Cho

Top Searches for this datasheet

Other recent searches