Sanyo LB1997 Three-phase brushless motor driver for cd-rom spindle drive Datasheet

Ordering number : EN5978A
LB1997
Monolithic Digital IC
LB1997
Three-Phase Brushless Motor Driver
for CD-ROM Spindle Drive
Overview
Package Dimensions
The LB1997 is a three-phase brushless motor driver
especially suited for CD-ROM spindle motor drives.
unit: mm
3222-HSOP28
28
1.0
[LB1997]
15
7.6
0.5
1
14
0.8
2.7
0.2
0.1
1.8max
0.3
15.2
0.8
SANYO : HSOP28
Pd max – Ta
2.0
Allowable power dissipation, Pd max – W
• Current linear drive
• Control V type amplifier
• Separate power supply for output upper side bias
circuit allows low output saturation by boosting this
power supply only (useful for 5V power supply types).
• Upper side current detection technique reduces loss
voltage of current detection resistor. Voltage effect of
this resistor reduces internal current drain of IC.
• Built-in short braking circuit
• Built-in reverse blocking circuit
• Hall FG output
• Built-in S/S function
• Built-in current limiter circuit
• Built-in Hall power supply
• Built-in thermal shutdown circuit
• V type control/single-side control switching pin allows
CLV and CAV operation.
5.6
Functions
1.6
1.5
With substrate
1.2
0.8
IC only
0.6
0.4
0
–20
0
20
40
60
Ambient temperature, Ta – °C
75 80
100
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
60499RM(KI)/22699RM(KI) No. 5978-1/9
LB1997
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Power supply voltage
Symbol
Conditions
Ratings
Unit
VCC1 max
7.0
V
VCC2 max
14.4
V
VCC3 max
14.4
V
Applied output voltage
VO max
14.4
V
Applied intput voltage
VIN max
VCC1
V
Output current
IO max
Allowable power dissipation
Pd max
1.3
A
IC only
0.6
W
with substrate (114.3 × 76.1 × 1.6 mm3,
glass exposy)
1.5
W
Operating temperature
Topr
–20 to +75
°C
Storage temperature
Tstg
–55 to +150
°C
Operating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
VCC1
Power supply voltage
VCC2
≥ VCC1
VCC3
Unit
4 to 6
V
4 to 13.6
V
4 to 13.6
V
Sample Application at Ta = 25°C
Parameter
12V type
5V type
Symbol
VCC1
Conditions
Regulated voltage
VCC2 = VCC3
Unregulated voltage
VCC1 = VCC3
Regulated voltage
VCC2
Boost-up voltage or regulated voltage
(Note)
Ratings
Unit
4 to 6
V
4 to 13.6
V
4 to 6
V
4 to 13.6
V
Note: When boost-up voltage is used at VCC2, output can be set to low-saturation.
No. 5978-2/9
LB1997
Electrical Characteristics at Ta = 25°C, VCC1 = 5V, VCC2 = VCC3 = 12V
Parameter
Ratings
Conditions
Symbol
min
typ
Unit
max
[Power supply current]
Power supply current
ICC1
VC = VCREF
ICC2
VC = VCREF
0
VC = VCREF
150
ICC3
Output idle current
8
mA
mA
250
µA
ICC1OQ
VS/S = 0V
200
µA
ICC2OQ
VS/S = 0V
30
µA
ICC3OQ
VS/S = 0V
30
µA
[Output]
Saturation voltage, upper side 1
VOU1
IO = –0.5A, VCC1 = 5V, VCC2 = VCC3 = 12V
1.0
V
lower side 1
VOD1
IO = 0.5A, VCC1 = 5V, VCC2 = VCC3 = 12V
0.3
V
Saturation voltage, upper side 2
VOU2
IO = –0.5A, VCC1 = VCC3 = 5V, VCC2 = 12V
0.3
V
lower side 2
VOD2
0.3
V
0.37
V
Current limiter setting voltage
VCL
IO = 0.5A, VCC1 = VCC3 = 5V, VCC2 = 12V
RRF = 0.43Ω
[Hall amplifier]
Common mode input voltage range
VHCOM
VCC–1.0
1.2
Input bias current
IHIB
Minimum Hall input level
VHIN
60
High level voltage
VS/SH
2.0
Low level voltage
VS/SL
V
µA
1
mVP-P
[S/S pin]
Input current
IS/SI
VS/S = 5V
Leak current
IS/SL
VS/S = 0V
VCC1
V
0.7
V
200
µA
µA
–30
[Control]
IVC
VC = VCREF = 2.5V
1
µA
IVCREF
VC = VCREF = 2.5V
1
µA
Voltage gain
GVCO
∆VRF/∆VC
Startup voltage
VCTH
VCREF = 2.5V
2.35
2.65
V
∆VCTH
VCREF = 2.5V
50
150
mV
Startup voltage width
0.25
times
[Hall power supply]
Hall power supply voltage
VH
Allowable current
IH
IH = 5mA
0.8
V
20
mA
[Thermal shutdown]
Operating temperature
Hysterisis
TTSD
Design target value
∆TTSD
Design target value
150
180
210
°C
°C
15
[Short braking]
Brake pin at High level
VBRH
4
5
V
Brake pin at Low level
VBRL
0
1
V
CC pin at High level
VCCH
4
5
V
CC pin at Low level
VCCL
0
1
V
[Control switching]
Note:
• During S/S OFF (standby), the Hall comparator is at High.
• Design target values are not measured.
No. 5978-3/9
LB1997
Truth Table
Hall input
Control
Source –> Sink
1
2
Phase W –> Phase V
U
V
W
H
H
L
H
L
L
L
L
H
L
H
L
H
L
H
L
H
H
Phase U –> Phase W
3
Phase V –> Phase W
Phase W –> Phase V
4
Phase U –> Phase V
Phase V –> Phase U
5
Phase V –> Phase U
Phase U –> Phase V
6
Phase U –> Phase W
Phase W –> Phase U
H
L
Phase V –> Phase W
Phase W –> Phase U
VC
H
L
H
L
H
L
H
L
H
L
Input:
H: Input 1 is higher in potential than input 2 by at least 0.2V.
L: Input 1 is lower in potential than input 2 by at least 0.2V.
Pin Assignment
RS 1
28 VH
FG 2
27 WIN1
BRAKE 3
26 WIN2
S/S 4
25 VIN1
NC 5
24 VIN2
NC 6
23 UIN1
SIG GND 7
22 UIN2
FRAME GND
LB1997
FRAME GND
CC 8
21 VCC1
FC 9
20 RF
VCREF 10
19 NC
VC 11
18 VCC3
WOUT 12
17 VCC2
PWR GND 13
16 UOUT
NC 14
15 VOUT
Top view
A11182
No. 5978-4/9
VH
WIN2
WIN1
VIN2
VIN1
UIN2
UIN1
VCC1
+
–
+
–
+
–
–
+
–
+
–
+
Hall power
supply
Rotation direction detector
FG
RS
Forward/
reverse
FC
S/S
Reference voltage
Current limiter
Thermal shutdown
+
–
Short brake
+
–
CLV/CAV
switching
A11181
SIG GND
CC
VC
VCREF
BRAKE
VCC3
PWR GND
WOUT
VOUT
UOUT
RF
VCC2
LB1997
Block Diagram
Waveform distributor
Matrix
No. 5978-5/9
LB1997
Sample Application Circuit
BRAKE
S/S
1 RS
VH 28
2 FG
WIN1 27
3 BRAKE
0.047µF
WIN2 26
4 S/S
VIN1 25
5 NC
0.047µF
VIN2 24
6 NC
UIN1 23
7 SIG GND
0.047µF
UIN2 22
LB1997
FRAME GND
CC
FRAME GND
8 CC
VCC1 21
9 FC
RF 20
10 VCREF
NC 19
5V
0.1µF
0.1µF
11 VC
VCC3 18
12 WOUT
VCC2 17
13 PWR GND
UOUT 16
14 NC
VOUT 15
0.2 to 0.5Ω
12V
0.1µF
0.1µF
A11183
No. 5978-6/9
LB1997
Pin Descriptions
Pin number
Pin name
Pin voltage
Equivalent circuit
Pin function
17
VCC2
4V to 13.6V
Source side predrive voltage supply
pin
18
VCC3
4V to 13.6V
Constant current control amplifier
voltage supply pin
4V to 6V
Power supply pin for all circuits
except output transistors, source
predriver, and low current control
amplifier
21
VCC1
1
RS
Reverse detector pin
Forward rotation: High
Reverse rotation: Low
VCC1
10 kΩ
100µA
14 15
2
1 Hall element waveform Schmitt
comparator composite output
FG
A11184
23
22
UIN1
UIN2
VCC1
25µA
8
25
24
VIN1
VIN2
1.2V to
VCC1–1V
7
200Ω
10
9
200Ω
12
25µA
27
26
11
25µA
WIN1
WIN2
A11185
VCC1
75µA
U phase Hall element input and
reverse detector U phase Schmitt
comparator input pin
Logic High indicates UIN1 > UIN2.
V phase Hall element input and
reverse detector V phase Schmitt
comparator input pin
Logic High indicates VIN1 > VIN2.
W phase Hall element input and
reverse detector W phase Schmitt
comparator input pin
Logic High indicates WIN1 > WIN2.
Hall element lower side bias voltage
supply pin
13
28
VH
30 kΩ
2 kΩ
A11186
VCC1
75 kΩ
4
S/S
0V to VCC1
17
50 kΩ
When this pin is at 0.7V or lower, or
when it is open, all circuits are
inactive. When driving motor, set
this pin to 2V or higher.
A11187
7
GND pin for all circuits except
output
SIG GND
VCC1
2 kΩ
9
FC
20
20 kΩ
Control loop frequency compensator pin. Connecting a capacitor
between this pin and GND prevents
closed loop oscillation in current
limiting circuitry.
5 kΩ
A11188
Continued on next page
No. 5978-7/9
LB1997
Continued from preceding page
Pin number
10
Pin name
VCREF
Pin voltage
Equivalent circuit
Pin function
VCC1
2V to 3V
25µA
22
25µA
21
10 kΩ
200Ω
30 kΩ
15 kΩ
200Ω
30 kΩ
100µA
100µA
11
VC
0V to VCC1
A11189
12
WOUT
13
PWR GND
15
VOUT
16
UOUT
Output transistor GND
V phase output
VCC2
5
U phase output
3.9Ω
Upper side output PNP transistor
collector pin (common for all 3
2
3.9Ω
RF
phases). For current detection,
connect resistor between VCC3
pin and RF pin. Constant current
control and current limiter works
by detecting this voltage.
24
A11190
VCC1
75 kΩ
19
8
CC
Speed control voltage supply pin
V type control technique
VC > VCREF : Forward
VC < VCREF : Slowdown
(Reverse-blocking circuit built in to
prevent reverse rotation.)
W phase output
23 1
20
Control reference voltage supply
pin. Determines control start
voltage.
8 kΩ
8 kΩ
50 kΩ
V type control/single-side control
switching pin
CC:
High –> Single-side control
Low/Open –> V type control
A11191
VCC1
100µA
75 kΩ
3
16
BRAKE
Short brake pin
BRAKE:
High –> Short brake operation
Low/Open –> Motor drive operation
50 kΩ
A11192
No. 5978-8/9
LB1997
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 June, 1999. Specifications and information herein are subject to change
without notice.
PS No. 5978-9/9
Similar pages