LB11685AV

Ordering number : ENA1772 Monolithic Digital IC LB11685AV Overview 3-phase sensor less Motor driver The LB11685AV is a three-phase full-wave current-linear-drive motor driver IC. It adopts a sensor less control system without the use of a Hall Effect device. For quieter operation, the LB11685AV features a current soft switching circuit and be optimal for driving the cooling fan motors used in refrigerators, etc. Functions • Three-phase full-wave linear drive (Hall sensor-less method ) • Built-in three-phase output voltage control circuit • Built-in current limiter circuit • Built-in motor lock protection circuit • Motor lock protection detection output • FG output made by back EMF • Built-in thermal shut down circuit • Beat lock prevention circuit Specifications Parameter Maximum Ratings at Ta = 25°C Symbol VCC max VIN max IO max *1 Pd max Topr Tstg Tj max Mounted on a board *2 Conditions Ratings 19 -0.3 to VCC +0.3 1.2 1.05 -40 to 85 -55 to 150 150 Unit V V A W °C °C °C Maximum supply voltage Input applied voltage Maximum output current Allowable power dissipation Operating temperature Storage temperature Junction temperature *1: The IO is a peak value of motor-current. *2: Specified board: 76.1mm × 114.3mm × 1.6mm, glass epoxy board. Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. 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To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer' s products or equipment. 61610 SY 20100604-S00001 No.A1772-1/7 LB11685AV Recommended Operating Conditions at Ta = 25°C Parameter Recommended Supply voltage Operating supply voltage Symbol VCC VCC op Conditions Ratings 12.0 4.5 or 18.0 Unit V V Electrical Characteristics at Ta = 25°C, VCC = 5.0V Parameter Supply current Internal regulate voltage Output voltage (source) Output voltage (sink) Current limiter MCOM pin common-input voltage range MCOM pin Source current for hysteresis MCOM pin Sink current for hysteresis MCOM pin hysteresis current ratio VCO input bias current VCO oscillation minimum frequency VCO oscillation maximum frequency CX charge / discharge current CX hysteresis voltage C1 (C2) charge current C1 (C2) discharge current C1 (C2) charge / discharge current ratio C1/C2 charge current ratio C1/C2 discharge current ratio C1 (C2) cramp voltage width FG output low level voltage RD output low level voltage Thermal shut down operating temperature *1 Thermal shut down hysteresis temperature *1 ΔTTSD RTCCHG RTCDIS VCW1(2) VFGL VRDL TTSD IFG = 3mA IRD = 3mA Junction temperature Design target *2 Junction temperature Design target *2 15 °C 150 180 RTCCHG = IC1+ / IC2+ RTCDIS = IC1- / IC20.8 0.8 1.0 1.0 1.0 1.3 1.2 1.2 1.6 0.5 0.5 V V v °C ICX ΔVCX IC1(2)+ IC1(2)RTC1(2) VCO = 2.5V, C1(2) = 1.3V VCO = 2.5V, C1(2) = 1.3V RTC1(2) = IC1(2)+ / IC1(2)fVCOmax IVCO fVCOmin VCO = 2.3V VCO = 2.1V, CX = 0.015μF Design target *2 VCO = 2.7V, CX = 0.015μF Design target *2 VCO = 2.5V, CX = 1.6V 70 0.35 12 12 0.8 100 0.55 20 20 1.0 140 0.75 28 28 1.2 μA μA μA 930 8.6 0.2 μA Hz kHz RTCOM RTCOM = ICOM+ / ICOM0.6 1.4 ICOMMCOM = 7V 30 80 μA ICOM+ MCOM = 7V 30 80 μA Symbol ICC VREG VOSOUR VOSINK VOLIM VINCOM IO = 0.8A *3 IO = 0.8A *3 0.268 0 FC1 = FC2 = 0V Conditions min 5 3.0 Ratings typ 10 3.3 1.3 0.5 0.300 max 20 3.6 1.7 1.3 0.332 VCC - 2 mA V V V V V Unit *1: The thermal shut down circuit is built-in for protection from damage of IC. But its operation is out of Topr. Design thermal calculation at normal operation. *2: Design target value and no measurement is made. *3: The IO is a peak value of motor-current. No.A1772-2/7 LB11685AV Package Dimensions unit : mm (typ) 3315 1.5 Pd max - Ta Specified circuit board : 114.3 ×76.1× 1.6mm3 glass epoxy board 1.05 24 13 Allowable power dissipation, Pd max -- W 9.75 1.0 5.6 7.6 0.5 1 0.8 (0.48) 0.3 12 0.15 0.55 0.5 (1.3) 1.5MAX 0 -40 -20 0 20 40 60 80 100 SANYO : SSOP24J(275mil) Pin Assignment 0.1 Ambient temperature, Ta -- C UOUT (NC) (NC) PGND MCOM (NC) SGND FG RD (NC) VCO CX 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VOUT WOUT (NC) (NC) RF VCC REG VOH FC1 FC2 C2 C1 No.A1772-3/7 LB11685AV Block Diagram 1 24 2 23 3 Pre Drive Distributor 22 4 21 Output Switching Control 5 Start Up & Mask Timing 6 Reference Voltage 20 Bandgap + - 19 7 Power On Reset TSD Motor Lock Detector 18 8 17 9 FG 10 Torque Ripple Rejection & Current Limit 16 15 PLL 11 Low Voltage Control 14 VCO 12 Soft Switching 13 No.A1772-4/7 LB11685AV Pin Function Pin No. 1 23 24 4 Pin name UOUT WOUT VOUT PGND GND pin in the output part. This pin is connected to GND. The SGND pin is also connected to GND 20 RF Pin to detect output current. By connecting a resistor between this pin and VCC, the output current is detected as a voltage. The current limiter is operated by this voltage. 5 MCOM Motor coil midpoint input pin. The coil voltage waveform is detected based on this voltage. SGND SGND VCC Function Each output pin of three phases. Equivalent circuit Pin No.20 Pin No.1,23,24 Pin No.4 SGND VCC Pin No.5 SGND SGND 7 SGND Ground pin (except the output part) This pin is connected to GND. The PGND pin is also connected to GND. 8 FG FG out made by back EMF pin. It synchronizes FG out with inverted V-phase. When don’t use this function, open this pin. Pin No.8 No.9 SGND SGND 9 RD Motor lock protection detection output pin. Output with L during rotation of motor. Open during lock protection of motor (High-impedance). When don’t use this function, open this pin. 11 VCO PLL output pin and VCO input pin. To stabilize PLL output, connect a capacitor between this pin and GND. VREG VCC Pin No.11 SGND VREG VREG SGND 12 CX VCO oscillation output pin. Operation frequency range and minimum frequency are determined by the capacity of the capacitor connected to this pin. VCC VREG Pin No.12 SGND SGND Continue to the next page. No.A1772-5/7 LB11685AV Continue from the former page. Pin No. 13 14 C1 C2 Pin name Function Soft switching adjustment pin. The triangular wave from is form formed by connecting a capacitor with this pin. And, the switching of three-phase output is adjusted by the slope. VCC Equivalent circuit Pin No.13 14 SGND SGND 15 FC2 Frequency characteristic correction pin 2. To suppress the oscillation of control system closed loop of sink-side, connect a capacitor between this pin and GND. VCC VREG Pin No.15 SGND SGND 16 FC1 Frequency characteristic correction pin 1. To suppress the oscillation of control system closed loop of source-side, connect a capacitor between this pin and GND. SGND VCC Pin No.16 SGND 17 VOH Three-phase output high level output pin. To stabilize the output voltage of this pin, connect a capacitor between this pin and the VCC pin. VCC VCC Pin No.17 SGND SGND 18 VREG DC voltage (3.3V) output pin. Connect a capacitor between this pin and GND for stabilization. VCC VCC Pin No.18 SGND SGND 19 VCC Pin to supply power-supply voltage. To curb the influence of ripple and noise. The voltage should be stabilized. No.A1772-6/7 LB11685AV Application Circuit Example * Each fixed number in the following FIG, is the referential value. FAN MOTOR 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VCC SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. 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Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of June, 2010. Specifications and information herein are subject t o change without notice. PS No.A1772-7/7