LB1988N

Ordering number : ENN6185 Monolithic Digital IC LB1988N Three-Phase Sensorless Motor Driver + Loading Motor Driver Overview 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. Package Dimensions unit: mm 3196-DIP30SD [LB1988N] 30 16 Functions and Features • • • • • • • 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 10.16 8.6 1 27.2 15 1.14 1.78 0.48 0.95 SANYO: DIP30SD Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage 1 Maximum supply voltage 2 Maximum supply voltage 3 Maximum applied output voltage Maximum applied input voltage Maximum cylinder current Maximum loading current Allowable power dissipation Operating temperature Storage temperature Symbol VCCmax VCCLmax VREGmax Vomax VI1max Iomax Iomax (AVE) Iomax (peak) Pdmax Topr Tstg When mounted on the specified printed circuit board* Conditions Ratings 14.5 14.5 7.0 14.5 – 0.3 to VREG + 0.3 1.0 0.4 1.2 2.8 –20 to +75 –55 to +150 Unit V V V V V A A A W °C °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 3.0 3.95max 3.25 0.25 LB1988N Allowable Operating Ranges at Ta = 25°C Parameter Supply voltage 1 Supply voltage 2 Supply voltage 3 Symbol VCC VCCL VREG Conditions Ratings 8 to 13.8 8 to 13.8 4 to 6 Unit V V V Electrical Characteristics at Ta = 25°C, VCC = VCCL = 12 V, VREG = 5 V Parameter Supply voltage 1 Supply voltage 2 Supply voltage 3 Output saturation voltage 1 Output saturation voltage 2 MC pin common-mode input voltage range VC pin input bias current Control start voltage Closed loop control gain PCOUT output current 1 PCOUT output current 2 VCOIN input current Minimum VCO frequency Maximum VCO frequency C1/C2 source current ratio C1/C2 sink current ratio C1 source/sink current ratio C2 source/sink current ratio Thermal shutdown operating temperature Thermal shutdown hysteresis Symbol ICC ICCL IREG VOSAT1 VOSAT2 VIC IVC VTHVC GMVC IPCOU IPCOD IVCOIN VC = 0 V VRF = 10 mV RF = 0.5 Ω Source side Sink side VCOIN = 5 V Conditions VC = 0 V, XIN = YIN = 0 V VC = 0 V, XIN = YIN = 0 V VC = 0 V, XIN = YIN = 0 V IO = 0.4 A, source + sink IO = 0.8 A, source + sink 0 –2 2.4 0.75 –1 2.5 0.95 –90 90 0.1 400 18.5 –12 –12 –35 –35 150 180 15 +12 +12 +15 +15 210 0.2 2.6 1.15 6.5 1.4 1.8 Ratings min typ 6.5 max 10 1 10 2.0 2.6 VCC – 2 Unit mA mA mA V V V µA V A/V µA µA µA Hz kHz % % % % °C °C fVCOMIN CX = 0.022 µF, VCOIN = open fVCOMAX CX = 0.022 µF, VCOIN = 5 V RSOURCE IC1SOURCE/IC2SOURCE RSINK RC1 RC2 TTSD ∆TTSD IC1SINK/IC2SINK IC1SOURCE/IC1SINK IC2SOURCE/IC2SINK * * FG and PG Amplifier Block at Ta = 25°C, VCC = VCCL = 12 V, VREG = 5 V Parameter Back EMF FG Output on voltage Output off voltage PG amplifier Input offset voltage Input bias current Common-mode input voltage range Open-loop gain Output on voltage Output off voltage Schmitt amplifier hysteresis VIO IBIN VICOM GVPG VOL VOH VSHIS 4.5 70 93 115 * f = 1 kHz –8 –250 1 55 0.4 3.5 +8 mV nA V dB V V mV VOL VOH 4.5 0.4 V V Symbol Conditions Ratings min typ max Unit Note: Items marked with an asterisk are design target values and are not tested. 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 1 (HIGH) 2 (LOW) Symbol VIN1 VIN2 IIN ∆VT Vref = VS, between the output and VS VSAT U-1 IO = 0.2 A, CW/CCW mode VSAT L-1 Saturation voltage VSAT U-1’ VSAT L-1’ VSATU-1” Upper side residual voltage VSATL-1” Output transistor leakage current up ILU Vref = VS, between the output and VS IO = 0.2 A, CW/CCW mode Vref = VS, between the output and VS IO = 0.4 A, CW/CCW mode Vref = VS, between the output and VS IO = 0.4 A, CW/CCW mode Vref = 8 V, between the output and ground IO = 0.2 A, CW/CCW mode Vref = 8 V, between the output and ground IO = 0.4 A, CW/CCW mode 7.2 7.2 Sink, VIN = 3.5 V Conditions Ratings min 3.5 0 30 0.7 1.5 0.2 1.6 0.3 8.0 8.0 2.1 0.3 2.2 0.5 8.8 8.8 50 50 1.3 1.0 –5 –2 typ max 5 0.8 50 Unit V V µA V V V V V V V µA µA V µA Input voltage Input current Input hysteresis down ILL up VFU IF = 0.4 A Diode forward voltage Control supply current down VFL IF = 0.4 A lref No. 6185-3/9 LB1988N Loading Motor Truth Table Input XIN L H L H YIN L L H H XOUT Off H L L Output YOUT Off L H L Mode Standby Forward Reverse Brake Pdmax — Ta Mounted on the specified printed circuit board (114.3 × 76.1 × 1.6 mm3, glass epoxy) Allowable power dissipation — Pd [W] 2.80 1.68 0 -20 0 25 50 75 Ambient temperature — Ta [°C] Pin Assignment FC 1 VC 2 VREG 3 PGIN+ 4 PGIN- 5 PGOUT1 6 PGOUT2 7 BFGO 8 LVCC 9 VREF 10 XIN 11 YIN 12 XOUT 13 LGND 14 YOUT 15 30 29 28 27 26 25 24 GND PCOUT VCOIN CX C2 C1 WIN VIN UIN VCC RF MCOM WOUT VOUT UOUT LB1988N 23 22 21 20 19 18 17 16 Top view No. 6185-4/9 VREG VCC BFGO MCOM Rotor position detection circuit Thermal shutdown circuit UIN VIN WIN Mask circuit Startup control circuit Timing control circuit Soft switching drive circuit 2200 pF C1 C2 Output drive circuit 2200 pF UOUT VOUT PLL VCO Divide-by-8 circuit WOUT LB1988N 560 kΩ PCOUT VCOIN 1 kΩ Upper side saturation prevention circuit 0.47 µF CX RF 0.5 Ω GND LVCC 0.022 µF VC 200 Ω 0. 1 µF VREG 5 kΩ FC Output drive circuit LGND Block Diagram (Note that the values of the external components will vary with the motor actually used.) 200 Ω PGOUT2 XIN 200 Ω YIN VREF XOUT YOUT PGIN+ PGIN– PGOUT1 No. 6185-5/9 LB1988N Pin Functions Pin No. Symbol Voltage Function Equivalent circuit diagram VREG 1 FC Frequency characteristics correction. Insert a capacitor between this pin and ground to prevent closed-loop oscillation in the current control system. 1 kΩ 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. 2 40 k 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+ PG amplifier + input. This input is biased at 1/2 VREG internally. 6 µF 6 µF 6 µF 10 kΩ 200 Ω 5 PGIN– PG amplifier - input. 200 Ω 10 kΩ 5 4 V REG 60 µF 6 38 Ω 30 µF 6 PGOUT1 PG amplifier linear output. 38 Ω 5 kΩ 4 5 kΩ Continued on next page. No. 6185-6/9 LB1988N Continued from preceding page. Pin No. Symbol Voltage Function Equivalent circuit diagram VCC 7 PGOUT2 PG Schmitt amplifier output. VREG+VF VREG 100 µA 5 kΩ 7 8 BFGO Motor back EMF detection FG output (3-phase synthesized). 8 9 LVCC 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 11 0 V to VREG Loading motor driver logic input. 100 kΩ 50 kΩ 50 kΩ 12 12 YIN 9 13 XOUT 13 Loading motor driver output. 15 2 kΩ 15 YOUT 2 kΩ 14 10 14 LGND Loading motor driver output transistor ground. Continued on next page. No. 6185-7/9 LB1988N Continued from preceding page. Pin No. 16 Symbol UOUT Voltage Function Equivalent circuit diagram V CC 17 VOUT Drum motor driver output. 20 µF 3.9 Ω 10 kΩ 16 17 20 18 22 23 24 30 kΩ 18 WOUT 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. Internal reference voltage and power supply for the drum motor driver output block and coil waveform detection circuit. 3.9 Ω 30 kΩ 20 RF 21 VCC 8 to 13.8 V VCC 19 MCOM Motor coil midpoint input. This voltage is used as the reference voltage in coil voltage waveform detection. 16 17 18 22 23 24 10 kΩ 200 Ω 2 kΩ 200 Ω 200 Ω 19 22 UIN Coil waveform detection comparator inputs. These are connected to each of the phase outputs though internal 10-kΩ resistors. 23 VIN 24 WIN V REG 25 C1 Triangular waveform generator capacitor connection. The triangular waveform generated using this pin is used to implement soft switching for the coil output waveforms. 26 C2 15 µF 15 µF 25 26 5 µF 1 kΩ 1/2VREG -VF V REG 100 µA 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 CX 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 50 kΩ 28 50 µA 50 µA V REG 29 PCOUT VCO circuit PLL output. 29 30 GND 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