Monolithic Linear LB1695 Motor 3-phase Brushless Motor

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Monolithic Linear LB1695 Motor 3-phase Brushless Motor

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Ordering number EN5678A
Monolithic Linear
LB1695
Motor
3-phase Brushless Motor Driver
LB1695 3-phase brushless motor driver that optimal motor drive home appliances such on-demand water heaters.
Features
3-phase brushless motor drive voltage handling capacity, output current Current limiter circuit Low-voltage protection circuit Thermal shutdown protection circuit Hall amplifiers with hysteresis characteristics output function
Specifications
Absolute Maximum Ratings 25°C
Parameter Maximum supply voltage Symbol Maximum output current Allowable power dissipation Operating temperature Storage temperature Topr Tstg Mounted specified board.* Conditions Ratings +100 +150 Unit
Specified board: 114.3mm 76.2mm 1.6mm, glass epoxy board.
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.
D2408 MS/63097HA(OT) No.5678-1/9
LB1695
Allowable Operating Ranges 25°C
Parameter Power-supply voltage range Symbol Maximum power-supply slew rate power VCC/t VM/t VLVSD(OFF) Conditions Ratings more then 0.04 more then 0.16 Unit V/µs V/µs
These items stipulated because output through currents occur speed with which power-supply voltage rises fast when power first applied.
Electrical Characteristics 25°C,
Parameter Current drain Output saturation voltage Symbol VO(sat)1 VO(sat)2 Output leakage current Hall Amplifier Input bias current Common-mode input voltage range Hysteresis Input voltage (low high) Input voltage (high low)) (Speed pulse output) Output low-level voltage Pull-up resistance Forward/Reverse Operation Forward Reverse Current Limiter Operation Limiter Thermal Shutdown Operation Operating temperature Hysteresis Low-Voltage Protection Operation Operating voltage Release voltage Hysteresis Charge current Discharge current Charge start voltage Discharge start voltage Output current ignored time Output time 4700pF 4700pF VLVSD VLVSD(OFF) VLVSD Design target Design target 0.42 VFR1 VFR2 VFGL 10.0 12.5 VICM VSLH VSHL leak Forward rotation VO(sink) VO(source) VO(sink) VO(source) Conditions Ratings Unit
Design target: Design target values tested.
No.5678-2/9
LB1695
Package Dimensions
unit (typ) 3196A
27.0
0.95
3.95
0.51
(3.25)
0.48 1.78
(1.04)
SANYO DIP30SD(400mil)
With wiring density glass epoxy board
Allowable power dissipation,
0.25
10.16
Ambient temperature,
Assignment
OUT2 OUT3 FRAME IN3+ IN3- IN2+ IN2-
LB1695
view OUT1 FRAME IN1- IN1+
No.5678-3/9
LB1695
Truth Table
Input Forward/reverse control Output Source Sink OUT2 OUT1 OUT1 OUT2 OUT3 OUT1 OUT1 OUT3 OUT3 OUT2 OUT2 OUT3 OUT1 OUT2 OUT2 OUT1 OUT1 OUT3 OUT3 OUT1 OUT2 OUT3 OUT3 OUT2 output
Forward rotation Reverse rotation High 0.0V 0.8V 4.2V 5.0V
output
Block Diagram
1.3V 2.3V
Hys.Amp
LVDS
OUT1
Logic
OUT2 OUT3
Current Limiter
0.5V
No.5678-4/9
LB1695
Functions
name OUT1 OUT2 OUT3 voltage Output pin1. Output pin2. Output pin3. Power supply that provides output. Output current detection. Connect resistor between this ground. current limiter limits output current value VRF/Rf (current limiter operation). capacitor connected this determines both time output turned when current limiter operates time output current ignored.
0.5V
Function
Equivalent circuit
2.0V
resistor connected this determines charge current capacitor.
2.0V 0.4V
7,8, 9,22, 23,24
FRAME
This used heat dissipation. Electrically, must left open.
Power circuits other than output block. First speed pulse output. pull-up resistor built
Second speed pulse output. pull-up resistor built
IN1- IN1+
1.5V VCC-1.8V
Hall element input. Logic high defined IN-.
IN2- IN2+
1.5V VCC-1.8V
Hall element input. Logic high defined IN-.
IN3- IN3+
1.5V VCC-1.8V
Hall element input. Logic high defined IN-.
Continued next page.
No.5678-5/9
LB1695
Continued from preceding page.
name voltage Function Forward/reverse control
Equivalent circuit
Ground circuits other than output block. lowest potential output transistors will potential pin.
LB1695 Functional Description
Hall element input circuits Hall element input circuits differential amplifiers with hysteresis about 30mV (typical). operating level must within common-mode input voltage range (1.5V 1.8V). recommend providing input levels that exceed hysteresis least factor three (120 160mVp-p) assure that circuit operation affected noise. ability withstand noise determined problem during noise evaluation other testing, insert capacitors about 0.01µF) between Hall input pins. Protection circuit Low-voltage protection circuit sink side output transistors turned voltage falls below stipulated voltage (VLVSD). This circuit prevents incorrect operation when voltage reduced. Thermal shutdown circuit sink side output transistors turned junction temperature exceeds stipulated temperature (TSD). This circuit prevents from being destroyed overheating. Applications must designed that this circuit does operate except unusual situations. output circuit LB1695 combines IN1, IN2, inputs then wave shapes combined signal. output same frequency Hall inputs, output frequency three times that Hall inputs. Forward/reverse control circuit This circuit designed with assumption that direction will switched from while motor turning. direction switched while motor turning, through currents will flow output will become problem. recommend only using switching when power supply state, i.e. with motor stopped state. power supplies speed with which power-supply voltages (VCC rise when power first applied fast, through currents will flow output will become problem. Applications must assure that power supply rise speeds exceed 0.04V/µs (VCC/t) 0.16V/µs (VM/t). When applying power, desirable apply first then apply When turning power off, desirable first turn then wait motor stop, only then turn VCC. turned after turned while motor still turning inertia, certain motor types cause voltage rise generate voltages that exceed voltage handling capacity
No.5678-6/9
LB1695
Power supply stabilization capacitor low-voltage protection circuit operate other problems occur large fluctuations occur line voltage. line must stabilized capacitor inserted between ground. Also, large switching currents that flow line cause fluctuations voltage inductive components circuit wiring. line must also stabilized capacitor inserted between ground prevent fluctuations ground line potential, incorrect operation, voltages that exceed voltage handling capacity particular, applications that have long circuit lines VCC, ground must have adequate stabilization capacitors inserted power lines. Current limiter circuit current limiter circuit turns sink side output transistors when output current reaches limit value (the limit current). used current detection, output current detected voltage inserting resistor between ground. current limiter circuit operates when reaches 0.5V (typical), thus output current limited current limit term 0.5/Rf. Output time After current limiter circuit operates turns sink side output transistors, then turns output again after fixed period (the output time) elapsed. This current limiter circuit output switching technique adopted LB1695 much less susceptible problems with than output limitation techniques which output operated saturated level. output time determined charge time capacitor connected pin. When current limiter circuit operates, capacitor begins charge, time required charge this capacitor voltage, which (typical), output time. When capacitor charged voltage sink side output transistors turned again. charge current fixed current determined resistor connected pin. capacitor charge current output time toff related follows. 1.3/R must value range 100k) toff C/ICL 1.53 Output current ignored time While current limiter circuit operating sink side output off, regenerative current flows external diode provided absorb regenerative currents upper side output circuit that turned off. When sink side output turned after output time elapsed, reverse current flows instantaneously this diode diode's reverse recovery time. this phenomenon, current that reach current limit value flows instantaneously output. current limiter operated again this current, output would turned average current level would fall. This could result significantly lower torque during, example, motor startup. Therefore, prevent this current from being detected, current limiter circuit also provides fixed period (the output current ignored time) during which output current detected point where sink side output turned again after being turned off. output current ignored time determined discharge time capacitor connected pin. This discharge starts point where capacitor charged following operation current limiter circuit. output current ignored time time capacitor discharge 0.4V (typical). capacitor discharge current fixed current current about three times charge current. Therefore, output current ignored time about output time. capacitor discharge current output current ignored time related follows. 1.3/R C/ICH 0.41 Since current limiter circuit provides slope time when sink side output turned again, reverse circuit never becomes significantly large, even rectifying diode (i.e. diode whose reverse recovery time particularly short) used regenerative current absorption external diode.
No.5678-7/9
LB1695
Output time setting output time must period optimal type motor used. This time values external resistor attached external capacitor attached pin. Figure shows waveforms during current limiter operation. shorter output time used: Since output time output current ignored time have ratio about internal circuits, possible these periods independently. Thus output current ignored period become insufficient output time excessively short period. output current ignored period short, reverse current regenerative current absorption external diode cause current limiter circuit operate. (See Section 7.2.) Also, output time decreased, diode reverse current will increase become problem. longer output time used: excessively long output time used, average current will decrease resulting reduced torque during motor startup. some motor types, this make impossible switch from current limiter operating state steady state operation.
2.0V
voltage
0.4V 0.0V voltage 0.5V
0.0V toff
Figure Current Limiter Operating Waveforms internal power dissipation calculation (VCC ICC) (power dissipated motor coils) Techniques measuring internal temperature increases Since possible measure internal temperature directly, following techniques normally used temperature measurement. Thermocouple measurement When using thermocouple temperature measurement, thermocouple attached heat sink. While this measurement technique simple, suffers from large measurement errors when thermal generation process steady state. Measurement using internal diode properties recommend using properties parasitic diode that exists between ground measuring temperature this high (off) state measure voltage parasitic diode. Then calculate temperature from temperature characteristics voltage.
No.5678-8/9
LB1695
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 December, 2008. Specifications information herein subject change without notice. No.5678-9/9

Monolithic Linear LB1695 Motor 3-phase Brushless Motor

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