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PDF KA3016D Data sheet ( Hoja de datos )
| Número de pieza | KA3016D | |
| Descripción | SPINDLE MOTOR DRIVER | |
| Fabricantes | Fairchild | |
| Logotipo |  |
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CD-ROM PRODUCTS
KA3016D
SPINDLE MOTOR DRIVER
The KA3016D is a monolithic integrated circuit, suitable for
a 3-phase spindle motor drive of a CD system.
28-SSOPH-375
FEATURES
• 3-phase, full-wave, linear BLDC motor driver
• Power save at stop mode
• Built-in current limiter
• Built-in TSD (Thermal shutdown) circuit
• Built-in 3X or 1X hall FG output
• Built-in hall bias circuit
• Built-in rotational direction detector
• Built-in reverse rotation preventer
• Built-in short braker
• Corresponds to 3.3V or 5V DSP
ORDERING INFORMATION
Device
Package
Operating Temperature
KA3016D 28-SSOPH-375
−25°C ~ +75°C
BLOCK DIAGRAM
28 27 26 25 24 23 22
−+
21 20 19 18 17 16 15
Absolute
Values
Current sense Output
Amp
Current limit
TSD
1 234567
Hall amp
8 9 10 11 12 13 14
© 1999 Fairchild Semiconductor Corporation
MIC-99D001
January 1999
Rev. B
1
1 page  
CD-ROM PRODUCTS
ELECTRICAL CHARATERISTICS
(Unless otherwise specified, Ta=25°C, VCC=5V, VM=12V)
Characteristics
Quiescent circuit current
START / STOP
On voltage range
Off voltage range
HALL BIAS
Hall bias voltage
HALL AMP
Hall bias current
Common mode input range
Minimum input level
TORQUE CONTROL
ECR input voltage range
EC input voltage range
Offset voltage (–)
Offset voltage (+)
EC input current
ECR input current
In/output gain
FG
FG output voltage (H)
FG output voltage (L)
Input voltage range
OUTPUT BLOCK
Saturation voltage (upper TR)
Saturation voltage (lower TR)
Torque limit current
DIRECTION DETECTOR
Dir output voltage (H)
Dir output voltage (L)
Symbol
ICC
VSSON
VSSOFF
VHB
IHA
VHAR
VINH
ECR
EC
ECOFF–
ECOFF+
ECIN
ECRIN
GEC
VFGH
VFGI
VOH
VOL
ITL
VDIRH
VDIRL
Test conditions
−
Output drive on
Output driver off
IHB=20mA
–
–
–
–
–
EC=2.5V
EC=2.5V
EC=2.5V
ECR=2.5V
ECR=2.5V, RCS=0.5Ω
IFG= –10µA
IFG=10µA
–
IO= –300mA
IO=300mA
RCS=0.5Ω
IFG=–10µA
IFG=10µA
KA3016D
Min.
2
Typ.
5
Max.
8
Unit
mA
2.5 − VCC V
0.0 − 1.0 V
0.4 1.0 1.8
V
− 0.5 2 µA
1.5 − 4.0 V
100 −
− mVpp
0.2
0.2
−80
20
−5
−5
0.41
−
−
−50
50
0.5
0.5
0.51
4.0
4.0
−20
80
5
5
0.61
V
V
mV
mV
µA
µA
A/V
3.0 − VCC V
− − 0.5 V
− 50 − %
− 0.9 1.6 V
− 0.2 0.6 V
560 700 840 mA
3.0 − VCC V
− − 0.5 V
MIC-99D001
January 1999
5
5 Page 
CD-ROM PRODUCTS
6. REVERSE ROTATION PREVENTION
KA3016D
EC
ECR
+
−
H2+ +
H2− −
H3+ +
H3− −
DQ
CK
D-F/F
Low Active
A
Current
Sense
Amp
Gain
Controller
Driver
M
• When the output of the OR Gate, A is low, it steers all the output current of the current sense amp makes the
current delivered to the gain controller zero. Thus the output current of the driver becomes zero and the motor
is stopped.
• As in the state of the forward rotation, the D-F/F output, Q is high and the motor rotates normally. At this state if
the control input is changed such that EC>ECR, then the motor rotates slowly more and more by the reverse
commutation in the driver. At the moment that the motor rotates in reverse direction, the D-F/F output becomes
low and the OR gate output, thus, becomes low. This prevents the motor from rotating in reverse direction.
The operation principle is shown in the table and the flow chart..
Rotation
Forward
H2 H3 D-F/F Reverse rotation preventer
(Q) EC>ECR EC>ECR
H H→L H
Forward
−
Reverse
L H→L L
− Brake and stop
Forward rotation at EC < ECR
Rotating speed is decreased due to reverse torque at EC >ECR. (Motor still rotates forward)
At the moment that the motor rotates in reverse, the reverse rotation preventer makes the output power transistor open.
Rotating reverse at short time due to motor inertia
Stop within 1/6 turn reverse rotating
MIC-99D001
January 1999
11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet KA3016D.PDF ] | |
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