SANYO LB1999

Ordering number : EN5975
Monolithic Digital IC
LB1999M
Three-Phase Brushless Motor Driver
for VCR Capstan Motors
Overview
Package Dimensions
The LB1999M is a 3-phase brushless motor driver that is
particularly appropriate for VCR capstan motor drivers.
unit: mm
3129-MFP36SLF
Functions
[LB1999M]
· 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
Allowable power dissipation, Pdmax — W
SANYO: MFP36SLF
Independent IC
Ambient temperature, Ta — °C
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 Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
O3098RM (OT) No. 5975-1/8
LB1999M
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
VCC max
7
V
VS max
24
V
Maximum output current
IO max
1.3
A
Allowable power dissipation
Pd max
0.95
W
Maximum supply voltage
Independent device
Operating temperature
Topr
–20 to + 75
°C
Storage temperature
Tstg
–55 to + 150
°C
Allowable Operating Ranges at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
VS
Supply voltage
VCC
Hall input amplitude
GSENSE pin input range
VHALL
VGSENSE
Between the Hall inputs
With respect to the control system ground
Unit
5 to 22
V
4.5 to 5.5
V
±30 to ±80
mVo-p
–0.20 to + 0.20
V
Electrical Characteristics at Ta = 25°C, VCC = 5 V, VS = 15 V
Parameter
VCC supply current
Symbol
Conditions
Ratings
min
typ
max
Unit
RL = ∞, VCTL = 0 V (Quiescent)
12
18
mA
VOsat1
IO = 500 mA, Rf = 0.5 Ω, Sink + Source
VCTL = VLIM = 5 V (With saturation prevention)
2.1
2.6
V
VOsat2
IO = 1.0 A, Rf = 0.5 Ω, Sink + Source
VCTL = VLIM = 5 V (With saturation prevention)
2.6
3.5
V
1.0
mA
ICC
[Outputs]
Output saturation voltage
Output leakage current
IOleak
[FR]
FR pin input threshold voltage
FR pin input bias current
VFSR
2.25
IB (FSR)
–5.0
2.50
2.75
V
µA
[Control]
VCREF
2.37
CTLREF pin input range
CTLREF pin voltage
VCREFIN
1.7
CTL pin input bias current
IB (CTL)
2.50
With VCTL = 5 V and the CTLREF pin open
With Rf = 0.5 Ω, VLIM = 5 V, IO ≥ 10 mA,
Hall input logic fixed (U, V, W = H, H, L)
CTL pin control start voltage
VCTL (ST)
CTL pin control switching voltage
VCTL (ST2) With Rf = 0.5 Ω, VLIM = 5 V
2.63
V
3.50
V
8.0
µA
2.20
2.35
2.50
V
3.00
3.15
3.30
V
0.52
0.65
0.78
A/V
CTL pin control Gm1
Gm (CTL)
With Rf = 0.5 Ω, ∆IO = 200 mA,
Hall input logic fixed (U, V, W = H, H, L)
CTL pin control Gm2
Gm2 (CTL)
With Rf = 0.5 Ω, ∆VCTL = 200 mV,
Hall input logic fixed (U, V, W = H, H, L)
1.20
1.50
1.80
A/V
Voff (LIM)
With Rf = 0.5 Ω, VCTL = 5 V, IO ≥ 10 mA,
Hall input logic fixed (U, V, W = H, H, L)
140
200
260
mV
IB (LIM)
With VCTL = 5 V and the VCREF pin open,
VLIM = 0 V
–2.5
With Rf = 0.5 Ω, VCTL = 5 V, VLIM = 2.06 V,
Hall input logic fixed (U, V, W = H, H, L)
830
[Current Limiter]
LIM current limit offset voltage
LIM pin input bias current
LIM pin current control level
ILIM
µA
900
970
mA
+6
mV
1.0
3.0
µA
3.3
V
[Hall Amplifier]
Hall amplifier input offset voltage
Voff (HALL)
Hall amplifier input bias current
IB (HALL)
Hall amplifier common-mode input voltage range
VCM (HALL)
Torque ripple correction ratio
TRC
–6
1.3
For the high and low peaks in the Rf waveform
when IO = 200 mA.
(Rf = 0.5 Ω)*1
9
%
[FG Amplifier]
FG amplifier input offset voltage
FG amplifier input bias current
FG amplifier output saturation voltage
FG bias voltage
FG amplifier common-mode input voltage
Voff (FG)
IB (FG)
–8
Sink side, for the load provided by the internal
VOsat (FG)
pull-up resistor
VFGBI
2.4
0.5
mV
nA
0.5
VGM (FG)
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.
+8
–100
2.5
0.6
V
2.6
V
4.0
V
Continued on next page.
No. 5975-2/8
LB1999M
Continued from preceding page.
Parameter
Symbol
Conditions
Ratings
min
typ
max
Unit
[Saturation]
The voltages between each OUT and
VOsat (DET) Rf pair when IO = 10 mA, Rf = 0.5 Ω, and
VCTL = VLIM = 5 V
Saturation prevention circuit lower
side voltage setting
0.175
0.25
0.325
V
48.7
50
51.3
%
[Schmitt Amplifier]
Duty ratio
Under the specified conditions (RF = 39 kΩ)
DUTY
Upper side output saturation voltage
Vsatu (SH) IO = –20 µA
Lower side output saturation voltage
Vsatd (SH) IO = 100 µA
Hysteresis width
Vhys
TSD operating temperature
4.8
32
Design target value*2
T-TSD
V
46
170
0.2
V
60
mV
°C
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.
For each Hall logic setting
Ground level
Correction ratio =
2 × (Vp – Vb)
100 × (%)
Vp – Vb
Truth Table and Control Functions
Source → Sink
1
2
3
4
5
6
Phase V → Phase W
Phase W → Phase V
Phase U → Phase W
Phase W → Phase U
Phase U → Phase V
Phase V → Phase U
Phase W → Phase V
Phase V → Phase W
Phase W → Phase U
Phase U → Phase W
Phase V → Phase U
Phase U → Phase V
Hall input
U
V
W
H
H
L
H
H
L
L
L
L
L
L
H
H
L
H
H
H
L
FR
H
L
H
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 VCC = 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.
L
H
L
H
L
H
L
H
L
Note: Since the drive technique adopted is a 180° technique, phases
other than the sink and source phase do not turn off.
No. 5975-3/8
LB1999M
IOUT
IOUT
Control Function and Current Limiter Function
Slope: 0.50 A/V (typical)
Control Characteristics
Control Limiter Characteristics
Pin Descriptions
Pin No.
Pin
Function
3
FGIN+
Input used when the FG amplifier is used as an inverting
input. A feedback resistor must be connected between FGOUT
and this pin.
4
FGIN–
Noninverting input used when the FG amplifier is used as a
differential input amplifier. No bias is applied internally.
5
FGOUT
FG amplifier output. There is an internal resistive load.
6
FGS
Control reference voltage. While this pin is set to about
0.43 × VCC internally, this voltage can be modified by
applying a voltage from a low-impedance circuit.
(The input impedance is about 4.3 kΩ).
9
FC
Speed control loop frequency characteristics correction.
7
CTL
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 Ω.
8
LIM
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 Ω.
10
11
UIN+
UIN–
U phase Hall element inputs.
Logic high is defined as states where IN+ > IN–.
12
13
VIN+
VIN–
V phase Hall element inputs.
Logic high is defined as states where IN+ > IN–.
14
15
WIN+
WIN–
W phase Hall element inputs.
Logic high is defined as states where IN+ > IN–.
16
VCC
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.
Equivalent circuit
Continued on next page.
No. 5975-4/8
LB1999M
Continued from preceeding page.
Pin No.
Pin
21
VS
23
31
Rf (PWR)
Rf (SNS)
26
27
28
UOUT
VOUT
WOUT
32
GSENSE
33
FR
Function
Equivalent circuit
Output block power supply
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.
U phase output
V phase output
W phase output
(Spark killer diodes are built-in.)
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.)
Forward/reverse selection. The voltage applied to this pin
selects the motor direction (forward or reverse).
(Vth = 2.5 V at VCC = 5 V (typical))
Pin Assignment
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.
No. 5975-5/8
Forward/
reverse
selection
Control
amplifier 2
Forward/
reverse
selection
Hall input synthesis block
(linear matrix)
Control
amplifier 1
Synthesized output logarithmic
compression block
Antilogarithm conversion and
differential distribution
Feedback
amplifier
Differential distribution
and torque ripple
correction block
FG
amplifier
Schmitt amplifier
Drive distribution circuit
and lower side saturation
prevention circuit
Upper side saturation
prevention control
LB1999M
Block Diagram
No. 5975-6/8
MR pin
Hall output
GaAs Hall devices
are recommended
Hall output
Hall output
VCC/2 bias
FG pulse
output
Hall inputs
Torque command
voltage pin
Current limiter setting
voltage pin
Supply voltage
Ground
Power system ground
Forward/reverse
command voltage pin
LB1999M
Sample Application Circuit
No. 5975-7/8
LB1999M
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 October, 1998. Specifications and information herein are subject
to change without notice.
No. 5975-8/8