Bi-CMOS LV8747T Constant-Current Control Stepping Motor Driv

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Bi-CMOS LV8747T Constant-Current Control Stepping Motor Driv

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Ordering number ENA0967
Bi-CMOS
LV8747T
Constant-Current Control Stepping Motor Driver Switching Regulator Controller
LV8747T constant-current control stepping motor driver switching regulator controller
Features
circuits constant-current control stepping motor driver incorporated circuits switching regulator controller incorporated Motor driver control power incorporated Control stepping motor W1-2 phase excitation possible Chopping frequency selectable Output short-circuit protection circuit incorporated High-precision reference voltage circuit incorporated Output-stage push-pull composition enabling high-speed operation Timer latch type short-circuit protection circuit incorporated Upper lower regenerative diodes incorporated Thermal shutdown circuit incorporated
Specifications
Absolute Maximum Ratings 25°C
Parameter Supply voltage Driver output peak current Driver output continuous current Driver output peak current Driver output continuous current Regulator output current Symbol MDIO peak1 MDIO max1 MDIO peak2 MDIO max2 SWIO OUT1/OUT2 10ms, duty OUT1/OUT2 OUT3/OUT4 10ms, duty OUT3/OUT4 OUT5/OUT6 Conditions Ratings 1.75 Unit
Continued next page.
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.
O1007 20071001-S00003 No.A0967-1/21
LV8747T
Continued from preceding page. Parameter Allowable power dissipation Allowable power dissipation Operating temperature Storage temperature Specified circuit board Symbol max1 max2 Topr Tstg 4-layer glass epoxy printed circuit board Independent recommended four-layer substrate Conditions Ratings 4.85 +150 Unit
mounting backside soldering, precautions.
Allowable Operating Ratings 25°C
Parameter Supply voltage Logic input voltage VREF input voltage Regulator output voltage Regulator output current Error amplifier input voltage Timing capacity Timing resistance Triangular wave oscillation frequency Symbol VREF FOSC Conditions Ratings VM-5 15000 Unit
Electrical Characteristics 25°C, 24V, VREF 1.5V
Parameter General current drain Thermal shutdown temperature Thermal hysteresis width REG5 output voltage Motor Drivers [Charge pump block] Boost voltage Rise time Oscillation frequency Output block (OUT1/OUT2) Output resistance RonU1 RonD2 Output leak current Diode forward voltage Output block (OUT3/OUT4) Output resistance RonU2 RonD2 Output leak current Diode forward voltage Logic input block Logic input current IINL IINH Logic high-level input voltage Logic low-level input voltage Current control block VREF input current Chopping frequency Threshold voltage current setting comparator IREF Fchop VREF 1.5V CHOP VREF 1.5V, VREF 1.5V, VREF 1.5V, -0.5 0.291 0.191 0.093 62.5 0.300 0.200 0.100 0.309 0.209 0.107 VINH VINL 0.8V IOleak2 -500mA, source side 500mA, sink side -500mA IOleak1 -1.5A, source side 1.5A, sink side -1.5A tONG 10µF CHOP 28.0 28.7 29.8 Vreg5 "H", load Design guarantee Design guarantee Ireg5 -1mA Symbol Conditions Ratings Unit
Continued next page.
No.A0695-2/21
LV8747T
Continued from preceding page. Parameter Output short-circuit protection circuit Charge current Threshold voltage IOCP VthOCP VOCP Symbol Conditions Ratings Unit
Switching regulator Controller [Reference voltage block] REG25 output voltage Input stability Load stability Internal regulator block REGVM5 output voltage Triangular wave oscillator block Oscillation frequency Frequency fluctuation Current setting voltage Protective circuit block Threshold voltage comparator Standby voltage Source current Threshold voltage Latch voltage Soft start circuit block Source current Latch voltage ISOFT VltSOFT VSOFT ISOFT 40µA VthFB VstSCP ISCP VthSCP VltSCP ISCP 40µA FB5, ISCP 40µA VSCP 1.65 1.40 1.55 1.70 1.95 FOSC 20k, 620pF 0.91 0.98 1.05 VregVM5 VregVM5 VM-6.0 VM-5.0 Vreg25 VDLI VDLO Ireg25 -1mA Ireg25 -3mA 2.475 2.500 2.525
Low-input malfunction preventive circuit block Threshold voltage Hysteresis voltage Error amplifier block Input offset voltage Input offset current Input bias current OPEN open gain Common-phase input voltage range Common phase removal ratio output voltage output voltage Output sink current Output source current comparator block Input threshold voltage (Fosc 10kHz) Input bias current duty cycle (Fosc 80kHz) duty cycle (Fosc 160kHz) duty cycle (Fosc 10kHz) Output block Output resistance RonU3 RonD3 Leak current ILEAK -200mA, source side 200mA, sink side Don3 Don2 VT100 IBDT Don1 Duty cycle 100% Duty cycle 0.4V Internally fixed Internally fixed VREG25 divided 0.95 0.49 1.01 0.52 1.07 0.55 CMRR 2.5V 2.5V 1000 VHIS
No.A0695-3/21
LV8747T
Package Dimensions
unit (typ) 3337
VIEW SIDE VIEW BOTTOM VIEW
(4.4) (4.4) 0.125 (0.5) (1.0) SIDE VIEW 0.16 1.2MAX
SANYO TQFP64K(7X7)
No.A0695-4/21
LV8747T
With Exposed Die-Pad substrate Without Exposed Die-Pad
Allowable power dissipation,
4.85
Four-layer substrate
Four-layer substrate
2.40
2.52
1.25
Ambient temperature,
Substrate Specifications (Substrate recommended operation LV8747T) Size 100mm 100mm 1.6mm (four-layer substrate [2S2P]) Material Glass epoxy Copper wiring density
Copper wiring pattern diagram
Copper wiring pattern diagram
Cautions data case with Exposed Die-Pad substrate mounted shows values when more Exposed Die-Pad wet. design, employ derating design with sufficient margin. Stresses derated include voltage, current, junction temperature, power loss, mechanical stresses such vibration, impact, tension. Accordingly, design must ensure these stresses small possible. guideline ordinary derating shown below (1)Maximum value less voltage rating (2)Maximum value less current rating (3)Maximum value less temperature rating After design, sure verify design with actual product. Confirm solder joint state verify also reliability solder joint Exposed Die-Pad, etc. void deterioration, observed solder joint these parts, causes deteriorated thermal conduction, possibly resulting thermal destruction
No.A0695-5/21
LV8747T
Assignment
VREF34 OCPM OUT5 OUT6 REGVM5 NON5 INV5 NON6 INV6 REG25 REG5 SOFT VMSW VREF12 CHOP View PGND2 PGND1 OUT2B OUT2B OUT2A OUT2A OUT1B OUT1B OUT1A OUT1A PHA1
PHA4 OUT4B RNF4 OUT4A VM34
LV8747T
OUT3B RNF3 OUT3A PGND3 PHA3 PHA2
VM12
VM12
RNF2
RNF2
RNF1
RNF1
No.A0695-6/21
Block Diagram
OUT2A OUT2B RNF2 RNF3 OUT3A OUT3B VM34 OUT4A OUT4B RNF4 OUT6 OUT5
RNF1 OUT1A
OUT1B VM12
REG25
VMSW 2.5V reference voltage Triangular wave oscillator Internal reference voltage
VMSW REG5
Charge pump
Constant current
Output preamplifier stage
Output preamplifier stage
Output preamplifier stage
Output preamplifier stage
Output preamplifier stage
Output preamplifier stage
Output preamplifier stage
PGND2 Output control logic Output control logic Current selection
Output preamplifier stage
PGND1
NON5 INV5
LV8747T
PGND3
Output control logic
Output control logic
NON6
INV6 SOFT
VREF12
Current selection
Current selection Current selection
Over-current protection circuit
Oscillation circuit
Internal reference voltage VM-5V
Short-circuit protection circuit
PHA2 VREF34 PHA3 OCPM PHA4
CHOP
PHA1
REGVM5
No.A0695-7/21
LV8747T
Functions
PHA1 PHA2 VREF12 PGND1 PGND2 VM34 OUT3A OUT3B RNF3 OUT4A OUT4B RNF4 PHA3 PHA4 VREF34 PGND3 OCPM CHOP VMSW REG5 REGVM5 REG25 SOFT NON5 Driver Output phase shift input Driver 3/4ch Output current setting reference voltage input Driver output Power connect output short-circuit state detection time setting capacitor Over-current mode changeover connect resistor chopping frequency Driver Power save input Charge pump capacitor connection Charge pump capacitor connection Charge pump capacitor connection Power connection Internal regulator output Internal regulator output Regulator Reference voltage output Regulator Timing capacity external Regulator Timing resistor external Regulator Soft start setting Regulator Timer latch setting Regulator Error amplifier input Continued next page. Driver Output phase shift input Driver Output current setting input Driver Output phase shift input Driver 1/2ch Output current setting reference voltage input Driver output Power Driver output Power Driver 3/4ch Power connection Driver OUTA output Driver OUTB output Driver Current sense resistor connection Driver OUTA output Driver OUTB output Driver Current sense resistor connection Driver Output current setting input Driver Output phase shift input Driver Output current setting input Driver Output current setting input RNF2 Driver Current sense resistor connection OUT2B Driver OUTB output OUT2A Driver OUTA output RNF1 Driver Current sense resistor connection OUT1B Driver OUTB output OUT1A Driver OUTA output VM12 Driver 1/2ch connect power supply Description
No.A0695-8/21
LV8747T
Continued from preceding page. INV5 OUT5 NON6 INV6 OUT6 Regulator Error amplifier input Regulator Error amplifier output Regulator Output Regulator Error amplifier input Regulator Error amplifier input Regulator Error amplifier output Regulator Output Regulator Output DUTY setting GROUND GROUND Description
No.A0695-9/21
LV8747T
Equivalent Circuits
Name PHA4 PHA3 PHA2 PHA1 OCPM
100k
Equivalent Circuit
REG5
VMSW
REG5
OUT4B RNF4 OUT4A VM34 OUT3B RNF3 OUT3A PGND3
REG5
PGND2 OUT2B OUT2B RNF2 RNF2 OUT2A OUT2A VM12 VM12 OUT1B OUT1B RNF1 RNF1 OUT1A OUT1A PGND1
REG5
Continued next page.
No.A0695-10/21
LV8747T
Continued from preceding page. Name VREF12 VREF34 Equivalent Circuit
REG5
CHOP
REG5
REG5
REG5
VMSW
REG25
REG5
VMSW
Continued next page.
6.25k
No.A0695-11/21
LV8747T
Continued from preceding page. Name INV6 NON6 INV5 NON5
Equivalent Circuit
REG5 VMSW VMSW
VMSW
REG5 VMSW
REG5
VMSW
OUT6 OUT5
VMSW
REGVM5
Continued next page.
No.A0695-12/21
LV8747T
Continued from preceding page. Name REGVM5 Equivalent Circuit
VMSW
150K
SOFT
REG5
VMSW
REG5
VMSW
No.A0695-13/21
LV8747T
Stepping Motor Driver OUT1/OUT2(OUT3/OUT4) Output control logic
Parallel input (Note) High High High OUTA High Output OUTB High Current direction Standby OUTBOUTA OUTAOUTB
(Note) Enter either externally logic input pin. Never input OPEN state.
Constant-current setting
(Note) High High (Note) High High (VREF/5) /RNF ((VREF/5) /RNF) ((VREF/5) /RNF) Output current
(Note) Enter either externally logic input pin. Never input OPEN state.
current calculation method constant-current control setting Sdriver determined follows from setting VREF voltage, resistor (RNF) connected between Iconst ((VREF /RNF attenuation factor (Example) VREF 1.5V, Iconst 1.5V/5/1 0.3A Setting chopping frequency constant-current control, chopping operation made with frequency determined external resistor (connected CHOP pin). chopping frequency with resistance connected CHOP (pin shown below.
Chopping frequency
Chopping frequency (kHz)
CHOP resistance
recommended chopping frequency ranges from 30kHz 120kHz.
No.A0695-14/21
LV8747T
Constant-current control time chart (chopping operation) (Sine wave increasing direction)
STEP
current
current Coil current Forced CHARGE section fchop
Current mode CHARGE
SLOW
FAST
CHARGE
SLOW
FAST
(Sine wave decreasing direction)
STEP
current
Coil current Forced CHARGE section current
fchop
Current mode CHARGE
SLOW
FAST
Forced CHARGE section
FAST
CHARGE
SLOW
each current mode, operation sequence described below rise chopping frequency, CHARGTE mode begins.(The section which CHARGE mode forced regardless magnitude coil current (ICOIL) current (IREF) exists 1/16 chopping cycle.) coil current (ICOIL) current (IREF) compared this forced CHARGE section. When (ICOIL<IREF) state exists forced CHARGE section CHARGE mode ICOIL IREF, then followed changeover SLOW DECAY mode, finally FAST DECAY mode 1/16 portion chopping cycle. When (ICOIL<IREF) state does exist forced CHARGE section; FAST DECAY mode begins. coil current attenuated FAST DECAY mode till cycle chopping over. Above operations repeated. Normally, SLOW (+FAST) DECAY mode continues sine wave increasing direction, then entering FAST DECAY mode till current attenuated level followed SLOW DECAY mode.
No.A0695-15/21
LV8747T
Output current vector locus (one step normalized degrees)
2-phase commutation position 100.0
Channel phase current ratio
66.7
33.3
33.3 66.7 100.0 Channel phase current ratio
Typical current waveform each excitation mode Two-phase excitation (1/2ch, mode)
I01,I11 PHA1 I02,I12
PHA2
IOUT1 -100 IOUT2 -100
No.A0695-16/21
LV8747T
phase excitation (1/2ch, mode)
PHA1
PHA2 IOUT1 -100 IOUT2 -100
PCA01195
W1-2 phase excitation (1/2ch, mode)
PHA1
PHA2 IOUT1 -100 IOUT2 -100
PCA01196
No.A0695-17/21
LV8747T
Output short-circuit protection circuit protect from damage short-circuit output caused lightening ground fault, output short-circuit protection circuit output standby mode incorporated. Output short-circuit protection operation changeover function Changeover output short-circuit protection made setting OCPM pin.
OCPM "Low" "High" State Auto reset method Latch method
(Auto reset method) When output current below output short-circuit protection current, output controlled input signal. When output current exceeds detection current, switching waveform shown below appears instead.
Exceeding over-current detection current Output current
voltage
256µs (TYP)
When detecting output short-circuit state, short-circuit detection circuit activated. When short-circuit detection circuit operation exceeds timer latch time described later, output changed over standby mode reset mode again 256µs (TYP). this event, over-current mode still continues, above switching mode repeated till over-current mode canceled. (Latch method) Similarly case automatic reset method, short-circuit detection circuit activated when detects output short-circuit state. When short-circuit detection circuit operation exceeds timer latch time described later, output changed over standby mode. this method, latch released setting constant setting method (timer latch setting) Connect between GND, time output case output short-circuit. value determined follows Timer latch Tocp Tocp Threshold voltage charge current 20µA Recommended constant value 100pF 200pF)
No.A0695-18/21
LV8747T
Switching Regulator Controller Regulator block diagram
MAXDUTY setting internally fixed
REG5
VMSW
REG25 2.5V 2.5V reference voltage
Internal reference voltage
1.0V
Triangle wave
0.5V
Triangle wave oscillator
Constant Current
1.6µA
Error amplifier 1.55V
comparator comparator High during
operation
Short-circuit protection circuit
Constant Current
High during protection circuit operation
REGOUT
2.5µA Internal reference voltage VM-5V
SOFT Soft start setting Timer/latch setting
REGVM5
Timing chart
Short-circuit protection comparator reference voltage Oscillator triangular wave output (CT) Max_Duty setting voltage (DT) Error amplifier output (FB) Output (OUT) Triangular wave conversion output
1.55V 1.0V 0.5V
waveform Short-circuit protection comparator output Latch output SOFT waveform
1.8V
VMSW supply voltage
9.1V
No.A0695-19/21
LV8747T
SOFT constant setting method (Soft start setting) switching regulator soft-start connecting between SOFT GND. Determine value follows Soft start time Tsoft Tsoft Error amplifier input voltage (NON5/NON6) SOFT charge current 1.6µA
(4). constant setting method (Timer latch setting) time output case regulator output short-circuit connecting between GND. Determine value follows Timer latch Tscp Tscp Threshold voltage 1.8V charge current 2.5µA
constant setting method (Capacitor charge/discharge current setting) capacitor charge/discharge current triangular wave generation connecting between GND. Determine value follows Charge/discharge current voltage 0.98V
constant setting method (Triangular wave oscillation frequency setting) triangular wave oscillation (together with setting charge/discharge current setting pin) connecting between GND. Determine value follows Triangular wave oscillation frequency Fosc Fosc [Hz] Triangle wave amplitude 0.5V (Fosc 10kHz) *Note that amplitude increases with frequency. Capacitor charge/discharge current. constant setting method (5).
No.A0695-20/21
LV8747T
Application Circuit
0.1µF
1.5V
5.6k
5.6k
5.6k
100pF
0.1µF
5.6k
OCPM
OUT5
OUT6
INV5
REGVM5
VREF34
NON5
PHA4 OUT4B RNF4 OUT4A VM34 OUT3B RNF3 OUT3A PGND3 PHA3
NON6
INV6
REG25 REG5 SOFT VMSW
0.1µF
620pF 2.2µF
0.1µF 0.1µF
LV8747T
0.01µF
VREF12 CHOP
1.5V 0.1µF 0.1µF
Logic input
Logic input
OUT2B
OUT2B
OUT2A
OUT2A
OUT1B
OUT1B
OUT1A
VM12
VM12
RNF2
RNF2
RNF1
RNF1
PGND2
10µF
0.25
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 intellctual property rights which resulted from technical information products mentioned above.
This catalog provides information October, 2007. Specifications information herein subject change without notice. No.A0967-21/21
0.25
PGND1
PHA2
OUT1A
PHA1

Bi-CMOS LV8747T Constant-Current Control Stepping Motor Driv

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