Ordering number : EN5975
O3098RM (OT) No. 5975-1/8
Overview
The LB1999M is a 3-phase brushless motor driver that is
particularly appropriate for VCR capstan motor drivers.
Functions
3-phase full-wave drive
Built-in torque ripple correction circuit (fixed correction
ratio)
Built-in current limiter circuit and control characteristics
that include gain switching
Upper and lower side output stage over-saturation
prevention circuit that does not require external
capacitors.
FG amplifier with built-in Schmitt comparator
Thermal shutdown circuit
Package Dimensions
unit: mm
3129-MFP36SLF
SANYO: MFP36SLF
[LB1999M]
LB1999M
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Three-Phase Brushless Motor Driver
for VCR Capstan Motors
Monolithic Digital IC
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.
Allowable power dissipation, Pdmax -- W
Ambient temperature, Ta -- C
Independent IC
Specifications
Absolute Maximum Ratings
at Ta = 25C
Allowable Operating Ranges
at Ta = 25C
Electrical Characteristics
at Ta = 25C, V
CC
= 5 V, V
S
= 15 V
Notes : 1. The torque ripple correction ratio is determined as follows from the Rf voltage waveform.
Continued on next page.
2. Parameters that are indicated as design target values in the conditions column are not tested.
No. 5975-2/8
LB1999M
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V
CC
max
7
V
V
S
max
24
V
Maximum output current
I
O
max
1.3
A
Allowable power dissipation
Pd max
Independent device
0.95
W
Operating temperature
Topr
20 to + 75
C
Storage temperature
Tstg
55 to + 150
C
Parameter
Symbol
Conditions
Ratings
Unit
Supply voltage
V
S
5 to 22
V
V
CC
4.5 to 5.5
V
Hall input amplitude
V
HALL
Between the Hall inputs
30 to 80
mVo-p
GSENSE pin input range
V
GSENSE
With respect to the control system ground
0.20 to + 0.20
V
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
VCC supply current
I
CC
RL =
, V
CTL
= 0 V (Quiescent)
12
18
mA
[Outputs]
V
O
sat1
I
O
= 500 mA, Rf = 0.5
, Sink + Source
2.1
2.6
V
Output saturation voltage
V
CTL
= V
LIM
= 5 V (With saturation prevention)
V
O
sat2
I
O
= 1.0 A, Rf = 0.5
, Sink + Source
2.6
3.5
V
V
CTL
= V
LIM
= 5 V (With saturation prevention)
Output leakage current
I
O
leak
1.0
mA
[FR]
FR pin input threshold voltage
V
FSR
2.25
2.50
2.75
V
FR pin input bias current
I
B
(FSR)
5.0
A
[Control]
CTLREF pin voltage
V
CREF
2.37
2.50
2.63
V
CTLREF pin input range
V
CREFIN
1.7
3.50
V
CTL pin input bias current
I
B
(CTL)
With V
CTL
= 5 V and the CTLREF pin open
8.0
A
CTL pin control start voltage
V
CTL
(ST)
With Rf = 0.5
, V
LIM
= 5 V, I
O
10 mA,
2.20
2.35
2.50
V
Hall input logic fixed (U, V, W = H, H, L)
CTL pin control switching voltage
V
CTL
(ST2)
With Rf = 0.5
, V
LIM
= 5 V
3.00
3.15
3.30
V
CTL pin control Gm1
Gm (CTL)
With Rf = 0.5
,
I
O
= 200 mA,
0.52
0.65
0.78
A/V
Hall input logic fixed (U, V, W = H, H, L)
CTL pin control Gm2
Gm2 (CTL)
With Rf = 0.5
,
V
CTL
= 200 mV,
1.20
1.50
1.80
A/V
Hall input logic fixed (U, V, W = H, H, L)
[Current Limiter]
LIM current limit offset voltage
Voff (LIM)
With Rf = 0.5
, V
CTL
= 5 V, I
O
10 mA,
140
200
260
mV
Hall input logic fixed (U, V, W = H, H, L)
LIM pin input bias current
I
B
(LIM)
With V
CTL
= 5 V and the V
CREF
pin open,
V
LIM
= 0 V
2.5
A
LIM pin current control level
I
LIM
With Rf = 0.5
, V
CTL
= 5 V, V
LIM
= 2.06 V,
830
900
970
mA
Hall input logic fixed (U, V, W = H, H, L)
[Hall Amplifier]
Hall amplifier input offset voltage
Voff (HALL)
6
+6
mV
Hall amplifier input bias current
I
B
(HALL)
1.0
3.0
A
Hall amplifier common-mode input voltage range
V
CM
(HALL)
1.3
3.3
V
For the high and low peaks in the Rf waveform
Torque ripple correction ratio
TRC
when I
O
= 200 mA.
9
%
(Rf = 0.5
)
*
1
[FG Amplifier]
FG amplifier input offset voltage
Voff (FG)
8
+8
mV
FG amplifier input bias current
I
B
(FG)
100
nA
FG amplifier output saturation voltage
V
O
sat (FG)
Sink side, for the load provided by the internal
0.5
0.6
V
pull-up resistor
FG bias voltage
V
FGBI
2.4
2.5
2.6
V
FG amplifier common-mode input voltage
V
GM
(FG)
0.5
4.0
V
Continued from preceding page.
Notes : 1. The torque ripple correction ratio is determined as follows from the Rf voltage waveform.
2. Parameters that are indicated as design target values in the conditions column are not tested.
Truth Table and Control Functions
No. 5975-3/8
LB1999M
Correction ratio =
2
(V
p
V
b
)
100
(%)
V
p
V
b
For each Hall logic setting
Ground level
Source
Sink
Hall input
FR
U
V
W
1
Phase V
Phase W
H
H
L
H
Phase W
Phase V
L
2
Phase U
Phase W
H
L
L
H
Phase W
Phase U
L
3
Phase U
Phase V
H
L
H
H
Phase V
Phase U
L
4
Phase W
Phase V
L
L
H
H
Phase V
Phase W
L
5
Phase W
Phase U
L
H
H
H
Phase U
Phase W
L
6
Phase V
Phase U
L
H
L
H
Phase U
Phase V
L
Note: In the FR column, "H" refers to a voltage of 2.75 V or higher, and "L" refers
to 2.25 V or lower (when V
CC
= 5 V.)
Note: In the Hall input column, "H" refers to the state in the corresponding phase
where the + input is at a potential at least 0.01 V higher than the input,
and "L" refers to the state where the input is at a potential at least 0.01 V
higher than the + input.
Note: Since the drive technique adopted is a 180 technique, phases
other than the sink and source phase do not turn off.
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
[Saturation]
Saturation prevention circuit lower
The voltages between each OUT and
side voltage setting
V
O
sat (DET)
Rf pair when I
O
= 10 mA, Rf = 0.5
, and
0.175
0.25
0.325
V
V
CTL
= V
LIM
= 5 V
[Schmitt Amplifier]
Duty ratio
DUTY
Under the specified conditions (R
F
= 39 k
)
48.7
50
51.3
%
Upper side output saturation voltage
Vsatu (SH)
I
O
= 20
A
4.8
V
Lower side output saturation voltage
Vsatd (SH)
I
O
= 100
A
0.2
V
Hysteresis width
Vhys
32
46
60
mV
TSD operating temperature
T-TSD
Design target value
*
2
170
C
Control Function and Current Limiter Function
Pin Descriptions
No. 5975-4/8
LB1999M
Control Characteristics
Control Limiter Characteristics
Slope: 0.50 A/V (typical)
I
OUT
I
OUT
Pin No.
Pin
Function
Equivalent circuit
Input used when the FG amplifier is used as an inverting
input. A feedback resistor must be connected between FG
OUT
and this pin.
3
FG
IN
+
Noninverting input used when the FG amplifier is used as a
differential input amplifier. No bias is applied internally.
4
FG
IN
FG amplifier output. There is an internal resistive load.
5
FG
OUT
Control reference voltage. While this pin is set to about
0.43
V
CC
internally, this voltage can be modified by
applying a voltage from a low-impedance circuit.
(The input impedance is about 4.3 k
).
6
FGS
Speed control loop frequency characteristics correction.
9
FC
Speed control input. The control implemented is fixed current
drive controlled by current feedback from Rf.
Gm = 0.58/V (typical) when Rf = 0.5
.
7
CTL
Current limiter function control. The output current can be
varied linearly by applying a voltage to this pin.
The slope is 0.5 A/V (typical) when Rf = 0.5
.
8
LIM
U phase Hall element inputs.
Logic high is defined as states where IN+ > IN.
10
11
U
IN
+
U
IN
V phase Hall element inputs.
Logic high is defined as states where IN+ > IN.
12
13
V
IN
+
V
IN
W phase Hall element inputs.
Logic high is defined as states where IN+ > IN.
14
15
W
IN
+
W
IN
Power supply for all internal blocks other than the output
block. This voltage must be stabilized so that noise and ripple
do not enter the IC.
16
V
CC
Continued on next page.
Continued from preceeding page.
Pin Assignment
Pin No.
Pin
Function
Equivalent circuit
No. 5975-5/8
LB1999M
21
V
S
Output block power supply
23
31
Rf (PWR)
Rf (SNS)
Output current detection. The control block current limiter
operates using the resistor Rf connected between these pins
and ground. Also, the lower side saturation prevention circuit
and the torque ripple correction circuit operate based on the
voltages to this pin. It is especially important to note that,
since the saturation prevention level is set using this voltage,
the lower side saturation prevention circuit will become less
effective in the large current region if the value of Rf is
lowered excessively. Also, the PWR and SENSE pins must
be connected together.
26
27
28
U
OUT
V
OUT
W
OUT
U phase output
V phase output
(Spark killer diodes are built-in.)
W phase output
32
GSENSE
Ground sensing. The influence of the common ground
impedance on Rf can be excluded by connecting this pin to
nearest ground for the Rf resistor side of the motor ground
wiring that includes Rf. (This pin must not be left open.)
33
FR
Forward/reverse selection. The voltage applied to this pin
selects the motor direction (forward or reverse).
(Vth = 2.5 V at V
CC
= 5 V (typical))
Note: Although the FRAME pins and
the GND pins are not connected
internally, the potentials of the
GND pins and the FRAME pins
externally be identical to assure
ground potential stability.
Block Diagram
No. 5975-6/8
LB1999M
Forward/
reverse
selection
Forward/
reverse
selection
Differential distribution
and torque ripple
correction block
Upper side saturation
prevention control
Drive distribution circuit
and lower side saturation
prevention circuit
Schmitt amplifier
FG
amplifier
Control
amplifier 1
Control
amplifier 2
Feedback
amplifier
Hall input synthesis block
(linear matrix)
Synthesized output logarithmic
compression block
Antilogarithm conversion and
differential distribution
Sample Application Circuit
No. 5975-7/8
LB1999M
GaAs Hall devices
are recommended
Hall output
MR pin
Hall output
Hall inputs
Hall output
V
CC
/2 bias
FG pulse
output
Forward/reverse
command voltage pin
Power system ground
Ground
Supply voltage
Current limiter setting
voltage pin
Torque command
voltage pin
No. 5975-8/8
LB1999M
This catalog provides information as of October, 1998. 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.
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