LB1989 SANYO | Alldatasheet

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D2499RM (OT) No. 6210-1/9 Functions and Features

  • Soft switching drive
  • No Hall sensors required.
  • No FG sensors required.
  • Built-in PG amplifier
  • Thermal shutdown circuit
  • Current limiter circuit Package Dimensions unit: mm 3222-HSOP28 0.1 1.8max 7.6 1.0 11 4 0.30.8 1528 2.7 15.2 0.8 5.6 0.5 0.2 SANYO: HSOP28 [LB1989] SANYO Electric Co.,Ltd. Semiconductor Company TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN Monolithic Digital IC LB1989 Three-Phase Sensorless VCR Drum Motor Driver 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. Parameter Symbol Conditions Ratings Unit Maximum supply voltage V CC max 14.5 V Maximum output voltage V O max 14.5 V Maximum input voltage V I1max –0.3 to VCC 1 + 0.3 V Maximum cylinder current I O max 1.0 A Allowable power dissipation Pdmax Independent IC 0.6 W Operating temperature Topr –20 to +75 °C Storage temperature Tstg –55 to +150 °C Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage V CC 8 to 13.8 V Allowable Operating Ranges at Ta = 25°C

No. 6210-2/9 LB1989 Electrical Characteristics at Ta = 25°C, VCC = 12 V Parameter Symbol Conditions Ratings Unit Test circuit min typ max Current drain I CC VC = 0 V 15 20 mA 1 Internal power supply V REG VC = 0 V 4.6 5.0 5.4 V 2 Output saturation voltage 1 V OSAT 1I O = 0.4 A, Source + Sink 1.4 2.0 V 3 Output saturation voltage 2 V OU 2I O = 0.8 A, RF = 0 Ω , Source + Sink 1.8 2.6 V 4 MC pin common-mode input voltage range VIC 0V CC – 2 V 5 VC pin input bias current I VC VC = 0 V –2 –1 µA 6 Control start voltage V THVC 2.3 2.55 2.8 V 7 Closed-loop control gain GMVC RF = 0.5 Ω 0.75 0.95 1.15 A/V 8 PCOUT output current 1 I PCOU Source side –90 µA 9 PCOUT output current 2 I PCOD Sink side 90 µA 10 VCOIN input current I VCOIN VCOIN = 5 V 0.1 0.2 µA 11 Minimum VCO frequency fV COMIN Cx = 0.022 µF, With VCOIN open 400 Hz 12 Maximum VCO frequency fV COMAX Cx = 0.022 µF, VCOIN = 5 V 18.5 kHz 13 C1/C2 source current ratio RSOURCE IC1SOURCE / IC2SOURCE –12 +12 % 14 C1/C2 sink current ratio RSINK IC1SINK / IC2SINK –12 +12 % 15 C1 source/sink current ratio RC1 IC1SOURCE / IC1SINK –35 +15 % 16 C2 source/sink current ratio RC2 IC2SOURCE / IC2SINK –35 +15 % 17 S/S pin high level voltage V SSH 4V 1 8 S/S pin low level voltage V SSL 0.7 V 19 S/S pin input current I SSI VS/S = 5 V 200 µA 20 Thermal shutdown circuit operating temperatureTTSD 150 180 210 °C * Thermal shutdown circuit hysteresis∆TTSD 15 °C * [FG/PG Amplifier Block] Back EMF FG Output on voltage V OL 0.4 V 21 Output off voltage V OH VREG – 0.5 V2 2 PG amplifier Input offset voltage V IO –8 +8 mV 23 Input bias current I BIN– – 250 nA 24 Common-mode input voltage range V ICOM 0 VREG – 1.5 V * Open-loop gain GVPG f = 1 kHz 55 dB 25 Output on voltage V OL 0.4 V 26 Output off voltage V OH VREG – 0.5 V2 7 Schmitt amplifier hysteresis V SHIS 70 93 115 mV 28 Note * : These are design target values and are not measured.

No. 6210-3/9 LB1989 Pin Assignment LB1989

No. 6210-4/9 LB1989 Block Diagram (Note that the external constants will vary depending on the motor used.) VCOPLL VCC MCOM UIN VIN WIN UOUT VOUT WOUT RF 0.5 Ω 0 to 0.01 µF × 3 GND CX VCOIN PCOUT PG I N + VREG 200 Ω 200 Ω 200 Ω0. 1 µF 0.01 µF 0.47 µF 560 kΩ 2200 pF 2200 pF VC FC VREG PGOUT1 PGOUT2 S/S 10 kΩ PGI N- 200 Ω200 Ω BFGO Thermal shutdown circuit Mask circuit Startup control circuit Soft switching drive circuit Divide-by-8 circuit Timing control circuit Rotor position detection circuit Output drive circuit Upper side saturation prevention control

1.2 V reference voltage

No. 6210-5/9 LB1989 Pin Functions Pin No. Pin Pin voltage Equivalent circuit Function Continued on next page. Drum motor driver outputs The lowest potential of the drum motor driver output transistors. Constant-current control is implemented by detecting this voltage. The current limiter also operates by detecting this voltage. UOUT VOUT WOUT RF26 Driver start/stop control High: Motor drives operating state Low: Standby state (power saving mode)

26 S/S

7 VCC 8 to 13.8 V Power supply

5 MCOM

The coil voltage waveform is detected referenced to this voltage. Coil waveform detection comparator inputs Each phase output is connected through an internal 10 kΩ resistor. UIN VIN WIN Sawtooth waveform generator capacitor connection This sawtooth waveform is used for soft switching in the coil output waveform.

No. 6210-6/9 LB1989 Pin No. Pin Pin voltage Equivalent circuit Function Continued on next page. The value of the capacitor connected between this pin and ground determines the operating frequency range and the minimum operating frequency for the VCO circuit. 13 CX VCO circuit voltage input The PCOUT pin voltage is RC filtered and the result is input to this pin.

14 VCOIN

15 PCOUT

17 VREG

This pin provides the control system power. Continued from preceding page. Ground for all circuits other than the output transistor

No. 6210-7/9 LB1989 Pin No. Pin Pin voltage Equivalent circuit Function Continued on next page. PG amplifier positive (+) input This pin is biased internally by 1/2 VREG. PG amplifier linear output20 PGOUT1

21 PGOUT2 PG Schmitt amplifier output

Continued from preceding page. PGIN+ PGIN– PG amplifier negative (–) input

22 BFGO Motor back EMF detection FG output

(synthesized from 3 phases)

No. 6210-8/9 LB1989 Pin No. Pin Pin voltage Equivalent circuit Function Frequency characteristics correction Current control system closed loop oscillation can be stopped by inserting a capacitor between this pin and ground. Speed control This IC implements constant-current control by applying feedback from RF. 24 VC Continued from preceding page. FC 0 to VCC Allowable Internal Power Dissipation Ambient temperature Ta (°C) Allowable internal power dissipation Pd (W) Independent IC

PS No.6210-9/9 LB1989 This catalog provides information as of December, 1999. Specifications and information herein are subject to change without notice. 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.