Ordering number : ENN6185 Monolithic Digital IC LB1988N Three-Phase Sensorless Motor Driver + Loading Motor Driver Overview Package Dimensions The LB1988N is a sensorless motor driver that includes an on-chip loading motor driver as well. It is optimal for VCR drum motor drive. unit: mm 3196-DIP30SD [LB1988N] Functions and Features 30 16 0.25 10.16 8.6 Soft switching drive Does not require Hall-effect sensors Does not require FG sensors PG amplifier Thermal shutdown circuit Current limiter circuit Loading motor driver 1 15 3.25 3.95max 27.2 3.0 • • • • • • • 1.14 1.78 0.48 0.95 SANYO: DIP30SD Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum supply voltage 1 VCCmax 14.5 Maximum supply voltage 2 VCCLmax 14.5 V V Maximum supply voltage 3 VREGmax 7.0 V V Maximum applied output voltage Vomax 14.5 Maximum applied input voltage VI1max – 0.3 to VREG + 0.3 V Iomax 1.0 A Iomax (AVE) 0.4 A Iomax (peak) 1.2 A 2.8 W Maximum cylinder current Maximum loading current Allowable power dissipation Pdmax When mounted on the specified printed circuit board* Operating temperature Topr –20 to +75 °C Storage temperature Tstg –55 to +150 °C Note: * Specified printed circuit board: 114.3 × 76.1 × 1.6 mm3, glass epoxy 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 71699RM (OT) No. 6185-1/9 LB1988N Allowable Operating Ranges at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage 1 VCC 8 to 13.8 Supply voltage 2 VCCL 8 to 13.8 V V Supply voltage 3 VREG 4 to 6 V Electrical Characteristics at Ta = 25°C, VCC = VCCL = 12 V, VREG = 5 V Parameter Symbol Conditions Supply voltage 1 ICC VC = 0 V, XIN = YIN = 0 V Supply voltage 2 ICCL VC = 0 V, XIN = YIN = 0 V Ratings min typ 6.5 Unit max 10 mA 1 mA VC = 0 V, XIN = YIN = 0 V 6.5 10 mA Output saturation voltage 1 VOSAT1 IO = 0.4 A, source + sink 1.4 2.0 V Output saturation voltage 2 VOSAT2 IO = 0.8 A, source + sink 1.8 2.6 V VCC – 2 V Supply voltage 3 IREG MC pin common-mode input voltage range 0 VIC VC = 0 V –2 –1 Control start voltage VTHVC VRF = 10 mV 2.4 2.5 2.6 V Closed loop control gain GMVC RF = 0.5 Ω 0.75 0.95 1.15 A/V PCOUT output current 1 IPCOU Source side PCOUT output current 2 IPCOD Sink side 90 VCOIN input current IVCOIN VCOIN = 5 V 0.1 VC pin input bias current IVC µA –90 µA µA 0.2 µA Minimum VCO frequency fVCOMIN CX = 0.022 µF, VCOIN = open 400 Hz Maximum VCO frequency fVCOMAX CX = 0.022 µF, VCOIN = 5 V 18.5 kHz C1/C2 source current ratio RSOURCE IC1SOURCE/IC2SOURCE C1/C2 sink current ratio RSINK –12 +12 % IC1SINK/IC2SINK –12 +12 % % C1 source/sink current ratio RC1 IC1SOURCE/IC1SINK –35 +15 C2 source/sink current ratio RC2 IC2SOURCE/IC2SINK –35 +15 % TTSD * 150 210 °C ∆TTSD * Thermal shutdown operating temperature Thermal shutdown hysteresis 180 15 °C FG and PG Amplifier Block at Ta = 25°C, VCC = VCCL = 12 V, VREG = 5 V Parameter Symbol Conditions Ratings min typ Unit max Back EMF FG Output on voltage VOL Output off voltage VOH 0.4 4.5 V V PG amplifier Input offset voltage VIO –8 Input bias current IBIN –250 Common-mode input voltage range VICOM * Open-loop gain GVPG f = 1 kHz 4.5 VSHIS 70 V dB 0.4 VOL VOH Note: Items marked with an asterisk are design target values and are not tested. 3.5 55 Output off voltage mV nA 1 Output on voltage Schmitt amplifier hysteresis +8 V V 93 115 mV Continued on next page. No. 6185-2/9 LB1988N Continued from preceding page. Loading Block at Ta = 25°C, VCC = VCCL = 12 V, VREG = 5 V Parameter Input voltage Symbol Control supply current Unit max VIN1 3.5 5 VIN2 0 0.8 V 50 µA Sink, VIN = 3.5 V IIN 30 ∆VT 0.7 V V Vref = VS, between the output and VS VSAT U-1 IO = 0.2 A, CW/CCW mode 1.5 2.1 V VSAT L-1 Vref = VS, between the output and VS IO = 0.2 A, CW/CCW mode 0.2 0.3 V VSAT U-1’ Vref = VS, between the output and VS IO = 0.4 A, CW/CCW mode 1.6 2.2 V VSAT L-1’ Vref = VS, between the output and VS IO = 0.4 A, CW/CCW mode 0.3 0.5 V VSATU-1” Vref = 8 V, between the output and ground IO = 0.2 A, CW/CCW mode 7.2 8.0 8.8 V VSATL-1” Vref = 8 V, between the output and ground IO = 0.4 A, CW/CCW mode 7.2 8.0 8.8 V ILU 50 µA down ILL 50 µA Upper side residual voltage Diode forward voltage typ 1 (HIGH) Saturation voltage Output transistor leakage current Ratings min 2 (LOW) Input current Input hysteresis Conditions up up VFU IF = 0.4 A 1.3 down VFL IF = 0.4 A 1.0 lref –5 –2 V µA No. 6185-3/9 LB1988N Loading Motor Truth Table Input Output XIN YIN XOUT YOUT Mode L L Off Off Standby H L H L Forward L H L H Reverse H H L L Brake Pdmax — Ta Allowable power dissipation — Pd [W] Mounted on the specified printed circuit board (114.3 × 76.1 × 1.6 mm3, glass epoxy) 2.80 1.68 0 -20 0 25 50 75 Ambient temperature — Ta [°C] Pin Assignment FC 1 30 GND VC 2 29 PCOUT VREG 3 28 VCOIN PGIN+ 4 27 CX PGIN- 5 26 C2 PGOUT1 6 25 C1 24 WIN 23 VIN LVCC 9 22 UIN VREF 10 21 VCC XIN 11 20 RF YIN 12 19 MCOM XOUT 13 18 WOUT LGND 14 17 VOUT YOUT 15 16 UOUT PGOUT2 7 BFGO 8 LB1988N Top view No. 6185-4/9 0. 1 µF 0.022 µF 0.47 µF 560 kΩ 2200 pF 2200 pF 200 Ω 200 Ω PGIN– PLL Startup control circuit Thermal shutdown circuit VCO PGOUT1 PGOUT2 5 kΩ VREG 1 kΩ XIN Soft switching drive circuit Divide-by-8 circuit Timing control circuit Mask circuit Rotor position detection circuit YIN VREF XOUT Upper side saturation prevention circuit Output drive circuit PGIN+ 200 Ω FC VC CX VCOIN PCOUT C2 C1 BFGO VREG YOUT LVCC GND RF WOUT VOUT UOUT WIN VIN UIN MCOM VCC LGND 0.5 Ω LB1988N Block Diagram (Note that the values of the external components will vary with the motor actually used.) Output drive circuit No. 6185-5/9 LB1988N Pin Functions Pin No. Symbol Voltage Function Equivalent circuit diagram VREG 1 1 kΩ Frequency characteristics correction. Insert a capacitor between this pin and ground to prevent closed-loop oscillation in the current control system. FC 1 10 kΩ 5 kΩ V REG V CC 50 µF 50 µF 27 kΩ 2 VC 0 V to VREG Speed control. This circuit implements a constant-current control scheme in which current feedback from the RF pin is applied. 40 k 2 200 Ω 24 kΩ 3 VREG 4 V to 6 V Control system power supply. This power supply must be stabilized to prevent ripple or other noise entering the circuit. V REG 4 PGIN+ 6 µF PG amplifier + input. This input is biased at 1/2 VREG internally. 6 µF 6 µF 10 kΩ 200 Ω 5 PGIN– PG amplifier - input. 200 Ω 10 kΩ 4 5 V REG 60 µF 30 µF 6 38 Ω 6 PGOUT1 PG amplifier linear output. 38 Ω 5 kΩ 5 kΩ 4 Continued on next page. No. 6185-6/9 LB1988N Continued from preceding page. Pin No. Symbol Voltage Function Equivalent circuit diagram VCC 7 PGOUT2 VREG+VF PG Schmitt amplifier output. VREG 5 kΩ 100 µA 7 8 BFGO 9 LVCC 8 Motor back EMF detection FG output (3-phase synthesized). 8 to 13.8 V Loading motor driver output transistor power supply. VCCL 13 15 10 VREF 0 to VCCL Loading motor driver output voltage setting. 1 mA 30 kΩ 1 mA 30 kΩ 50 kΩ 10 V REG 11 XIN 100 kΩ 11 0 V to VREG Loading motor driver logic input. 12 50 kΩ 12 YIN 13 XOUT 50 kΩ 9 13 Loading motor driver output. 15 YOUT 2 kΩ 2 kΩ 14 14 LGND 15 10 Loading motor driver output transistor ground. Continued on next page. No. 6185-7/9 LB1988N Continued from preceding page. Pin No. Symbol 16 UOUT Voltage Function Equivalent circuit diagram V CC 17 VOUT 18 WOUT Drum motor driver output. 20 µF 3.9 Ω 20 RF 21 VCC 10 kΩ 30 kΩ Lowest potential of the drum motor driver output transistor. Constant-current control is implemented by detecting this voltage. The current limiter also functions by detecting this voltage. 8 to 13.8 V 3.9 Ω 30 kΩ 20 16 22 17 23 18 24 Internal reference voltage and power supply for the drum motor driver output block and coil waveform detection circuit. VCC 19 22 MCOM Motor coil midpoint input. This voltage is used as the reference voltage in coil voltage waveform detection. UIN 23 VIN 24 WIN 16 17 18 22 10 kΩ 23 24 200 Ω 200 Ω 2 kΩ 19 200 Ω Coil waveform detection comparator inputs. These are connected to each of the phase outputs though internal 10-kΩ resistors. V REG 25 15 µF C1 15 µF 5 µF 25 26 Triangular waveform generator capacitor connection. The triangular waveform generated using this pin is used to implement soft switching for the coil output waveforms. 26 1 kΩ 1/2VREG -VF C2 V REG 100 µA 27 CX The value of the capacitor connected between this pin and ground in the VCO circuit determines the operating frequency range and the minimum operating frequency. 300 Ω 27 Continued on next page. No. 6185-8/9 LB1988N Continued from preceding page. Pin No. Symbol Voltage Function Equivalent circuit diagram V REG 28 VCOIN VCO circuit control voltage input. The PCOUT pin voltage is applied to this pin through an RC filter. 10 kΩ 1.75 V 28 50 kΩ 50 µA 50 µA V REG 29 PCOUT 30 GND VCO circuit PLL output. 29 Ground used for all circuits other than the drum and loading motor driver output transistors. 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 July, 1999. Specifications and information herein are subject to change without notice. PS No. 6185-9/9