Datasheet LB1989 Datasheet (SANYO)

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Page 1

Ordering number :ENN6210A

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

114

0.3

0.8

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

max 14.5 V

Maximum output voltage V

max 14.5 V

Maximum input voltage V

max

–0.3 to VCC1 + 0.3

Maximum cylinder current I

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

8 to 13.8 V

Allowable Operating Ranges at Ta = 25°C

Page 2

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

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

1IO= 0.4 A, Source + Sink 1.4 2.0 V 3

Output saturation voltage 2 V

2IO= 0.8 A, RF = 0 Ω, Source + Sink 1.8 2.6 V 4

MC pin common-mode input voltage range

– 2 V 5

VC pin input bias current I

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

COIN

= 5 V 0.1 0.2 µA 11

Minimum VCO frequency fV

COMIN

Cx = 0.022 µF, With V

COIN

open 400 Hz 12

Maximum VCO frequency fV

COMAX

Cx = 0.022 µF, V

COIN

= 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

4V18

S/S pin low level voltage V

SSL

0.7 V 19

S/S pin input current I

SSI

S/S

= 5 V 200 µA 20

Thermal shutdown circuit operating temperature

TTSD 150 180 210 °C

Thermal shutdown circuit hysteresis ∆TTSD 15 °C

[FG/PG Amplifier Block] Back EMF FG

Output on voltage V

0.4 V 21

Output off voltage V

REG

– 0.5

V22

PG amplifier

Input offset voltage V

–8 +8 mV 23

Input bias current I

BIN

–

– 250

nA 24

Common-mode input voltage range V

ICOM

REG

– 1.5

Open-loop gain GVPG f = 1 kHz 55 dB 25 Output on voltage V

0.4 V 26

Output off voltage V

REG

– 0.5

V27

Schmitt amplifier hysteresis V

SHIS

70 93 115 mV 28

Note * : These are design target values and are not measured.

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No. 6210-3/9

LB1989

Pin Assignment

LB1989

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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

0.5

Ω

0 to 0.01 µF × 3

GND

VCOIN

PCOUT

PGI N+

VREG

200

Ω

200 Ω

0.1 µF

0.01 µF

0.47 µF

560 kΩ

2200 pF

VREG

PGOUT1 PGOUT2 S/S

10 k

Ω

PGIN-

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

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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)

S/S

8 to 13.8 V

Power supply

5 MCOM

Motor coil center input 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.

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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.

VCO circuit voltage input The PCOUT pin voltage is RC filtered and

the result is input to this pin.

VCOIN

PCOUT

VCO circuit PLL output

GND

17 VREG

Internal 5 V regulator This pin provides the control system power.

Continued from preceding page.

Ground for all circuits other than the output transistor

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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 output

PGOUT1

PGOUT2

PG Schmitt amplifier output

Continued from preceding page.

PGIN+

PGIN–

PG amplifier negative (–) input

BFGO

Motor back EMF detection FG output (synthesized from 3 phases)

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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.

Continued from preceding page.

0 to V

Allowable Internal Power Dissipation

Ambient temperature Ta (°C)

Allowable internal power dissipation Pd (W)

Independent IC

Page 9

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.