Monolithic Digital LB1976 Motor 3-phase Brushless Motor

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Monolithic Digital LB1976 Motor 3-phase Brushless Motor

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Ordering number EN6088B
Monolithic Digital
LB1976
Motor
3-phase Brushless Motor Driver
LB1976 3-phase brushless motor driver suited direct driving motors conditioners, water heaters, other similar equipment. Since shunt regulator circuit built single power supply operation sharing same power supply motor supported.
Features
Withstand voltage 60V, output current 2.5A Direct drive output built-in output top-side diodes Built-in current limiter Built-in output circuit
Specifications
Absolute Maximum Ratings 25°C
Parameter Supply voltage Symbol Output current Maximum input current Allowable power dissipation IREG max1 max2 Operating temperature Storage temperature Topr Tstg VREG Independent With infinite hear sink Conditions Ratings +100 +150 Unit
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 21003AS (OT) 52199RM (KI) No.6088-1/10
LB1976
Allowable Operating Ranges 25°C
Parameter Supply voltage range Symbol Input current range applied voltage output current IREG VREG Conditions Ratings Unit
Electrical Characteristics 25°C,
Parameter Supply current Output Block Output saturation voltage VOsat1(L) VOsat1(H) VOsat1 VOsat2(L) VOsat2(H) VOsat2 Output leak current IOLeak(L) IOLeak(H) Upper side diode forward voltage VFH1 VFH2 Hall Amplifier Input bias current Common-mode input voltage range Hall input sensitivity Hysteresis width Input voltage (low high) Input voltage (high low) (speed pulse output) Output low-level voltage Pull-up resistor value Current Limiter Limiter Thermal Shutdown Thermal shutdown operating temperature Hysteresis width Low-Voltage Protection Operating voltage Non-operating voltage Hysteresis width Oscillator Output high-level voltage Output low-level voltage Amplitude Oscillator frequency Charge current Discharge resistance VREG voltage VREG IREG 1.5mA VOH(OSC) VOL(OSC) VOSC fOSC ICHG RDCHG 2200pF 2.95 1.38 1.50 19.6 -110 3.10 1.45 1.65 23.0 3.25 1.59 1.71 27.6 Vp-p VLVSD VLVSD(OFF) VLVSD Design target Value (junction temperature) Design target Value (junction temperature) 0.45 0.50 0.55 VFGL 12.5 VICM VHIN VIN(HA) VSLH VSHL VCC-1.5 mVp-p 1.0A 2.0A -100 1.0A, VO(sink) 1.0A, VO(source) 1.0A, VO(sink) VO(source) 2.0A, VO(sink) 2.0A, VO(source) 2.0A, VO(sink) VO(source) Symbol Conditions Ratings Unit
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No.6088-2/10
LB1976
Continued from preceding page.
Parameter VCTL Input voltage VCTL1 VCTL2 Input bias current IB1(CTL) IB2(CTL) VCTL Amplifier Reference voltage Output voltage VCREF VCOUT1 VCOUT2 Start/Stop High-level input voltage range Low-level input voltage range Input open voltage Hysteresis width High-level input current Low-level input current Forward/Reverse High-level input voltage range Low-level input voltage range Input open voltage Hysteresis width High-level input current Low-level input current VIH(F/R) VIL(F/R) VIO(F/R) VIN(F/R) IIH(F/R) IIL(F/R) V(F/R) V(F/R) VCC-1.5 VCC-0.5 0.35 -280 0.50 -210 0.65 VIH(S/S) VIL(S/S) VIO(S/S) VIN(S/S) IIH(S/S) IIL(S/S) V(S/S) V(S/S) VCC-1.5 VCC-0.5 0.35 -280 0.50 -210 0.65 VCTL VCTL 2.23 3.90 0.60 2.35 4.20 0.80 2.46 4.40 1.10 Output duty Output duty 100% VCTL VCTL Symbol Conditions Ratings Unit
Package Dimensions
unit (typ) 3147C
With infinite heat sink
Allowable power dissipation,
12.7 11.2
R1.7
20.0 26.75
Independent
(1.81)
1.78
Ambient temperature,
SANYO DIP28H(500mil)
No.6088-3/10
LB1976
Assignment
VCOUT VCTL (NC) VCREF IN1- IN1+ IN2- IN2+ IN3- IN3+ GND1
LB1976
view
VREG
(NC) OUT1 OUT2 OUT3 (NC)
(NC) GND3 GND2
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 1.5V 1.5V
output
Duty VCTL characteristics
Duty
VCTL1
Control voltage, VCTL
VCTL2
No.6088-4/10
LB1976
Block Diagram Peripheral Circuit
VREG
LVDS
Hys.Amp
OUT1
Logic
OUT2 OUT3
VCTL
VCTL
Current Limiter
0.5V
VCTL VCREF
2.35V
VCOUT
GND1 GND2 GND3
Functions
name VREG voltage 4.5V 6.7V Function Power supply blocks other than output block. 0.0V 7.3V Shunt regulator output (7V). Equivalent circuit
0.0V
Start/stop control pin. Low: start High Open: stop
Typical threshold voltage approx. 2.8V (low high) approx. 2.3V (high low)
3.8k
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No.6088-5/10
LB1976
Continued from preceding page.
name voltage 0.0V Low: forward High Open: reverse
Function Forward/reverse pin.
Equivalent circuit
Typical threshold voltage approx. 2.8V (low high) approx. 2.3V (high low)
3.8k
OUT1 OUT2 OUT3 0.0V
Output Output Output Output current detect pin. Connect resistor between this ground. Output current limited value with VRF/Rf. (Current limiter operation)
0.5V
GND3 GND1 GND2 0.0V
Output block power supply. Output block ground. Ground blocks other than output block. Speed pulse output with built-in pull-up resistor.
0.0V Speed pulse output with built-in pull-up resistor.
IN1+ IN1IN2+ IN2IN3+ IN3-
1.5V 1.5V
Hall input pin. High input input
1.0V
This sets oscillation frequency. Connect capacitor between this ground.
94µA
2.1k
Continued next page.
No.6088-6/10
LB1976
Continued from preceding page.
name VCTL voltage 0.0V 6.7V VCTL VCTL1 Duty cycle VCTL1 VCTL VCTL2 Duty cycle controlled VCTL VCTL VCTL2 Duty cycle 100%
2.35V
Function Output duty cycle control pin.
Equivalent circuit
VCREF
0.0V 2.0V
VCTL amplifier internal reference voltage (2.35V).
100µA
23.5k
VCOUT
0.7V 0.7V
VCTL amplifier output pin.
No.6088-7/10
LB1976
Description
Direct Drive LB1976 employs direct drive principle. Motor rotation speed controlled varying output duty cycle according analog voltage input (VCTL). This eliminates need alter motor power supply voltage. Compared previous using principle (such Sanyo LB1690), this allows simplification power supply circuitry. VCTL input directly supplied microcontroller, motor speed can, therefore, controlled directly from microcontroller. PWM, source-side output transistors switched that duty tracks VCTL input. output duty cycle controlled over range 100% VCTL input. Frequency oscillator frequency fPWM [Hz] capacitance [pF] connected between GND. following equation applies: fPWM (1.97 Because output transistor on/off switching subject delay, setting frequency very high value will cause delay become noticeable. frequency therefore should normally kept below 40kHz (typ.), which achieved with capacitance 1300pF higher. reference, source-side output transistor switching delay time about about OFF. Output Diodes Because switching operation carried source-side output transistors, Schottky barrier diodes must connected between pins (OUT1 OUT3). diodes with average forward current rating range 2.0A, accordance with motor type current limiting requirements. Schottky barrier diodes connected externally, Schottky barrier diodes with high forward voltage (VF) used, internal parasitic diode between becomes active. When this happens, output logic circuit malfunction, resulting feed-through current output which destroy output transistors. prevent this possibility, Schottky barrier diodes must used dimensioned properly. larger externally connected Schottky barrier diodes, hotter more likely parasitic diodes between become active more likely malfunction occur. Schottky barrier diodes must determined that output malfunction does occur also when becomes hot. malfunction occurs, choose Schottky barrier diode with lower Protection circuits 4-1. voltage protection circuit When voltage falls below stipulated level (VLVSD), voltage protection circuit cuts source-side output transistors prevent related malfunction. 4-2. Thermal shutdown circuit (overheat protection circuit) When junction temperature rises above stipulated value (TSD), thermal shutdown circuit cuts sourceside output transistors prevent damage overheating. Design application heat characteristics that protection circuit will triggered under normal circumstances. 4-3. Current limiter current limiter cuts source-side output transistors when output current reaches preset value (limiter value). This interrupts source current thereby limits output current peak value. connecting resistance between ground, output current detected voltage. When voltage reaches 0.5V (typ.), current limiter activated. performs on/off control source-side output transistors, thereby limiting output current value determined 0.5/Rf. Hall Input Circuit Hall input circuit differential amplifier with hysteresis 32mV (typ.). operation level must within common-mode input voltage range (1.5V 1.5V). prevent noise other adverse influences, input level should least times hysteresis (120 16mVp-p). noise Hall input problem, noise-canceling capacitor (about 0.01µF) should connected across Hall input pins. Output Circuit Hall input signal IN1, IN2, combined subject waveform shaping before being output. signal same frequency Hall input, signal frequency that three times higher.
No.6088-8/10
LB1976
Start/Stop Control Circuit start/stop control circuit turns source-side output transistors (motor stop) when High signal input when Open. When signal input pin, source-side output transistors turned normal operation state established (motor start). Forward/Reverse Switching LB1976 designed under assumption that forward/reverse switching carried while motor running. switching carried while motor running, reverse torque braking occurs, leading high current flow. current limiter triggered, source-side output transistors switched off, sink-side output transistors into short brake condition. However, because current limiter this cannot control current flowing sink-side output transistors, these destroyed short brake current. Therefore switching while motor running permissible only output current (IO) limited maximum 2.5A using motor coil resistance other suitable means. switching should carried only while High signal input Open (stop condition), while VCTL conforms following condition: VCTL VCTL1 (duty cycle 0%). other condition, switching will result feed-through current. should therefore fixed (forward) High Open (reverse) during use. VCC, Power Supplies When power supply voltage (VCC, rises very quickly when power first applied, feed-through current occur output. current remains below about 0.2A 0.3A, does pose problem, such possibility should still prevented slowing down voltage rise power-on. Especially High Open (reverse), quick rise likely cause feed-through current. This should prevented ensuring that 0.2V/µs less. Feed-through current also prevented first switching then during power-on. sequence power-down should follows. Provide stop input duty ratio input VCTL pin. When motor come full stop, switch then VCC. power switched while motor still rotating current flowing motor coil (including motor restraint inertia rotation), counter electromotive current kickback current flow side, depending motor type power-off procedure. this current cannot absorbed power supply capacitor, voltage rise exceed absolute maximum rating Ensure that this does happen through proper design power supply through capacitor. Because LB1976 incorporates shunt regulator, used single power supply. this case, supply (6.3V typ.) VREG external transistor resistor. When using regulator, leave VREG open. Power Supply Stabilizing Capacitors line fluctuates drastically, low-voltage protection circuit activated mistake, other malfunctions occur. line must therefore stabilized connecting capacitor least several between GND. Because large switching current flows line, wiring inductance other factors lead voltage fluctuations. line also fluctuates, line must stabilized connecting capacitor least several between GND, prevent exceeding other problems. Especially when long wiring runs (VM, VCC, GND) used, sufficient capacitance should provided ensure power supply stability. VCREF Pin, VCOUT These pins always used Open condition. chattering occurs switching output, connect capacitor (about 0.1µF) between VCREF ground between VCOUT GND. Heat Dissipation Fins heat sink mounted heat dissipation fins this connected GND. sink should electrically open.
No.6088-9/10
LB1976
Sample calculation internal power dissipation (approximate) calculation assumes following parameters: Source-side output transistor duty cycle (PWM control) Output current average current) power dissipation 14mA 0.07W Output drive current power dissipation 11mA 11mA 0.33W Source-side output transistor power dissipation VO(source) Duty(on) 0.9V 0.72W Sink-side output transistor power dissipation VO(sink) 1.1V 1.10W Total internal power dissipation 2.22W temperature Rise Measurement Because chip temperature cannot measured directly, measurement according following procedures should always carried out. 14-1. Thermocouple measurement thermocouple element mounted heat dissipation fin. This measurement method easy implement, will subject measurement errors temperature stable. 14-2. Measurement using internal diode characteristics This recommended measurement method. makes parasitic diode incorporated between GND. High measure voltage parasitic diode calculate temperature. (Sanyo data: -1mA, temperature characteristics about -2mV/°C) Pins Because pins electrically open, they used wiring purpose etc.
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.6088-10/10

Monolithic Digital LB1976 Motor 3-phase Brushless Motor

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