LB1981

Ordering number : ENN5917 LB1981V Monolithic Digital IC LB1981V Three-Phase Brushless Motor Driver Overview The LB1981V is a three-phase brushless motor driver especially suited for use mainly with drum motors of portable VCRs. Package Dimensions unit: mm 3191-SSOP30 30 16 Features • Three-phase full-wave drive brushless sensorless motor drive • Soft switching drive • Power-saving speed control function due to motor voltage • Use with 3V power supply possible • Output residual voltage can be set in 4 ways • Forward/reverse switching possible • Built-in standby function (FG and PG amplifier only remain operative) • Built-in braking circuit • Built-in thermal shutdown circuit • Built-in FG and PG amplifiers • Built-in saturation prevention amplifier and midpoint control circuit 5.6 7.6 0.15 9.95 0.22 0.65 0.43 0.1 1.6max 1 15 SANYO : SSOP30 Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Power supply voltage Symbol Conditions VCC1 max VCC2 max VS max VO max VIN1 max Control circuits VIN2 max U, V, W, COM IO max Pd max Topr Tstg Ratings 7 12 VCC2 VS+2 –0.3 to VCC1+0.3 VS+2 1.0 0.5 –20 to +75 –55 to +150 Unit V V V V V V A W °C °C Applied output voltage Applied input voltage Output current Allowable power dissipation Operating temperature Storage temperature Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO 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 products described or contained herein. SANYO Electric Co.,Ltd. Semiconductor Company TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 81299RM(KI) No. 5917-1/9 0.5 1.0 [LB1981V] LB1981V Allowable Operating Ranges at Ta = 25˚C Parameter Power supply voltage Symbol VCC1 VCC2 VS Conditions Ratings 2.7 to 6.0 2.7 to 10.0 0 to VCC2 Unit V V V Electrical Characteristics at Ta = 25°C, VCC1 = 3V, VCC2 = 4.75V, VS = 3V Parameter Power supply current Output idle current Symbol ICC1 ICC2 ICC10Q ICC20Q IS30Q VOU1 VOD1 VOU2 VOD2 VIC IO = 76 mA IO = 76 mA VSTBY = 0V VSTBY = 0V VSTBY = 0V IO = 0.1A IO = 0.1A IO = 0.4A IO = 0.4A 0.3 2 –0.2 VSTBY = 3V VSTBY = 0V –10 2 –0.2 –10 –12 –12 –35 –35 11.5 30 180 15 2 –0.2 VSELCSLP = 3V VSELCSLP = 0V *1 *1 f = 1 kHz *1 IO = 10 µA IO = 10 µA *1 f = 720 Hz, VIN = 20 mVp-p 1 55 0.4 VCC1–0.5 20 30 1.15 1.30 ±1 1 55 0.4 VCC1–0.5 50 70 1.45 ±5 250 2 –10 ±1 ±5 250 2 VCC +0.7 50 Conditions min Ratings typ 5 1.2 1.0 60 0.2 0.2 0.4 0.4 max 7.5 2.5 1.5 10 120 0.5 0.5 0.8 0.8 VCC2–0.9 VCC1 +0.7 50 VCC1 +0.7 50 +12 +12 +15 +15 Unit mA mA mA µA µA V V V V V V V µA µA V V µA µA % % % % Hz deg ˚C °C V V µA µA mV nA V dB V V mV % V mV nA V dB V V mV Output saturation voltage, upper side 1 Output saturation voltage, lower side 1 Output saturation voltage, upper side 2 Output saturation voltage, lower side 2 COM pin common mode input voltage range Standby pin High level voltage VSTBYH Standby pin Low level voltage VSTBYL Standby pin input current ISTBYH Standby pin leakage current ISTBYL FRC pin High level voltage VFRCH FRC pin Low level voltage VFRCL FRC pin input current IFRCI FRC pin leakage current IFRCL Slope pin source current ratio RSOURCE Slope pin sink current ratio RSINK CSLP1 source - sink current ratio RCSLP1 CSLP2 sink - source current ratio RCSLP2 Startup frequency Freq Phase delay width Dwidth Thermal shutdown operating TTSD temperature Thermal shutdown hysteresis ∆TTSD SELCSLP pin High level voltage VSELH SELCSLP pin Low level voltage VSELL SELCSLP input current ISEL H SELCSLP pin leakage current ISEL L [FG amplifier] Input offset voltage VIO Input bias current IBIN– Common mode input voltage range VICOM Open loop gain GVFG Input ON voltage VOL Input OFF voltage VOH Schmitt amplifier hysteresis width VSHIS Output duty Duty Reference voltage VREF [PG amplifier] Input offset voltage VIO Input bias voltage IBIN– Common mode input voltage range VICOM Open loop gain GVPG Output ON voltage VOL Output OFF voltage VOH Schmitt amplifier hysteresis width VSHIS Note: Items shown to be “*1” are not measured. VFRC = 3V VFRC = 0V ICSLP1 source/ICSLP2 source ICSLP1 sink/ICSLP2 sink ICSLP1 source/ICSLP1 sink ICSLP2 source/ICSLP2 sink COSC = 0.1 µF, OSC frequency *1 *1 *1 *1 150 210 *1 *1 *1 f = 1 kHz *1 IO = 10 µA IO = 10 µA *1 No. 5917-2/9 LB1981V Pin Assignment UOUT VOUT STBY 1 30 RF 2 29 WOUT 28 COM 3 SELCSLP 4 27 VIN 26 UIN 25 WIN 24 GND FRC 5 VS VCC2 VCC1 CSLP1 6 7 8 LB1981V 23 BFGO 9 22 FC2 CSLP2 10 21 FILTER PGOUT 11 PGC 12 20 FC1 19 OSC PGIN 13 VREF 14 FGIN 15 18 FGOUT 17 FGIN2 16 FGIN1 Top view A10857 0.6 Pd max - Ta Allowable power dissipation, Pd max – W 0.5 0.4 0.3 0.2 0.1 0 –20 0 20 40 60 80 100 Ambient temperature, Ta – ˚C No. 5917-3/9 LB1981V Pin Descriptions Pin number Pin name STBY 3 Pin voltage VCC1 max –0.2V min 100kΩ 3 100kΩ Equivalent circuit VCC1 Pin function When this pin is at 0.7V or less or when it is open, only the FG/PG amplifier operates. In the motor drive state, the pin should be at 2V or higher. A10858 4 SEL CSLP VCC1 max –0.2V min VCC1 100kΩ 4 100kΩ CSLP pin charge/discharge current switching pin. Setting this pin to 2V or higher switches the triangular wave slope that determines soft switching. A10859 5 FRC VCC1 max 20µA VCC1 –0.2V min 50kΩ 5 Motor forward/reverse switching pin. Low: reverse (–0.2V to +0.7V or open) High: forward (2V to VCC1) A10860 50kΩ 6 VS 0V to VCC2 7 VCC2 2.7V to 10V 8 VCC1 2.7V to 6V 9 10 CLSP1 CLSP2 VCC1 8µA 4µA 20µA Power supply pin for determining output amplitude by supplying motor voltage. Must be lower than VCC2 voltage. Power supply pin for supplying source side predriver voltage and coil waveform detect comparator voltage. Power supply pin for circuits except motor voltage, source side predriver voltage, and coil waveform detect comparator voltage. Pins for connecting triangular wave oscillator capacitor. This triangular wave coil output performs waveform soft switching. 1kΩ 9 10 A10861 Continued on next page No. 5917-4/9 LB1981V Continued from preceding page Pin number Pin name Pin voltage 11 PGOUT Equivalent circuit VCC1 30µA 30kΩ 11 Pin function PG amplifier output pin. A10862 12 PGC VCC1 6µA PG amplifier peak hold capacitor connection pin. 1.5kΩ 75kΩ 10µA 10µA 200Ω 12 A10863 13 PGIN 2.0V max 100kΩ VCC1 6µA 1.0V min (VCC = 3V) 500Ω 13 PG amplifier input pin. Connect PG coil between this pin and VREF. 500Ω 1.3V A10864 14 VREF VCC1 Internal 1.3V reference voltage. Used as reference voltage for FG and PG amplifiers. 14 1.3V 35kΩ 70kΩ A10865 15 FGIN 2.0V max VCC1 1.0V min (VCC1 = 3V) 16 FGIN1 10kΩ 1.3V 6µA 200Ω 9kΩ 1kΩ FG amplifier input pin. Connect FG coil between this pin and VREF. FG amplifier input signal noise filter capacitor connection pin. 17 FGIN2 17 16 15 A10866 FG amplifier input signal noise filter capacitor pin. Continued on next page No. 5917-5/9 LB1981V Continued from preceding page Pin number Pin name 18 PGOUT Pin voltage Equivalent circuit Pin function FG amplifier output pin. VCC1 30µA 30kΩ 18 A10867 19 OSC 5µA 2.5µA 10µA VCC1 Pin for connecting triangular wave oscillator capacitor. Serves for forced startup waveform generation. 1kΩ 19 A10868 20 FC1 VCC1 2kΩ 20 2kΩ 2s 5kΩ 10kΩ A10869 Frequency characteristics pin. Connecting a capacitor between this pin and ground serves to prevent closed-loop oscillation in the current control circuitry. (Lower-side output transistor drive current) 22 FC2 VCC1 22 10kΩ FC2 Frequency characteristics pin. Connecting a capacitor between this pin and ground serves to prevent closed-loop oscillation in the current control circuitry. (Lower-side output transistor drive current) A10870 21 FILTER VCC1 25µA 30kΩ 1kΩ 1kΩ 29 1kΩ 1 1kΩ 2 21 A10871 Connecting a capacitor between this pin and ground activates the coil output saturation prevention function. In this condition, the VS pin is controlled for motor voltage control. By adjusting the external capacitor, torque ripple compensation can be varied. Continued on next page No. 5917-6/9 LB1981V Continued from preceding page Pin number Pin name Pin voltage 23 BFG0 50µA Equivalent circuit VCC1 50µA 30kΩ 23 Pin function Motor counterelectromotive voltage FG pulse pin. Outputs a pulse using W phase counterelectromotive voltage as FG. Connect to ground if not used. A10872 24 25 26 27 GND WIN UIN VIN VCC2 10µA 25 26 27 2kΩ 200Ω 200Ω 200Ω Ground for all circuits except output. Coil waveform detect comparator input pins. 28 28 COM A10873 Motor coil midpoint input pin. Using this voltage as a reference, the coil voltage waveform is detected. 29 1 2 WOUT UOUT VOUT 3.9Ω 29 1 2 W phase coil output pin. U phase coil output pin. V phase coil output pin. VS 3.9Ω VCC1 30 RF 30 A10874 Output transistor ground. Constant current drive is performed by detecting the voltage at this pin. No. 5917-7/9 VCC1 Midpoint control COM Rotor position detect circuit VIN WIN Soft switching drive circuit UIN VCC2 BFG FC2 Thermal shutdown circuit STBY 0.1µF OSC Startup control circuit Timing control circuit FRC Forward/reverse CSLP1 VS 30kΩ 30kΩ 30kΩ CSLP2 UOUT VOUT WOUT Output drive circuit 0.1µF SELCSLP FC1 + – 0.1µF FILTER 200Ω + LB1981V 30kΩ 200Ω – 200Ω VCC1 RF 0.25Ω Reference voltage 10kΩ 500Ω – + Block Diagram (Constants for external components depend on motor.) VCC1 50kΩ VCC1 1.5kΩ + – 30kΩ – – 75kΩ 200Ω 200Ω + – 30kΩ GND + 200Ω 9kΩ 1kΩ 100kΩ 500Ω + 200Ω FGOUT FGIN2 FGIN1 FGIN VREF PGIN 1MΩ PGC 1µF PGOUT No. 5917-8/9 A10875 LB1981V Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. 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. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products(including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of August, 1999. Specifications and information herein are subject to change without notice. PS No. 5917-9/9