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PDF KA3011BD Data sheet ( Hoja de datos )
| Número de pieza | KA3011BD | |
| Descripción | 3-Phase BLDC Motor Driver | |
| Fabricantes | Fairchild | |
| Logotipo |  |
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KA3011BD
3-Phase BLDC Motor Driver
www.fairchildsemi.com
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
Description
The KA3011BD is a monolithic IC, suitable for a 3-phase
spindle motor driver of a CD-media system.
28-SSOPH-375
Typical Applications
• Compact disk ROM (CD-ROM) spindle motor
• Compact disk RW (CD-RW) spindle motor
• Digital video disk ROM (DVD-ROM) spindle motor
• Digital video disk RAM (DVD-RAM) spindle motor
• Digital video disk Player (DVDP) spindle motor
• Other compact disk media spindle motor
• Other 3-phase BLDC motor
Ordering Information
Device
Package
KA3011BD 28-SSOPH-375
KA3011BDTF 28-SSOPH-375
Operating Temp.
−25°C ~ +75°C
−25°C ~ +75°C
©2000 Fairchild Semiconductor International
1
Rev. 1.0.1
February. 2000.
1 page  
KA3011BD
Absolute Maximum Rating (Ta=25°C)
Parameter
Symbol
Value
Maximum supply voltage (Signal)
Maximum supply voltage (Motor)
Power dissipation
Maximum output current
Operating temperature range
Storage temperature range
VCCmax
VMmax
PD
IOmax
TOPR
TSTG
7
18
1.7 note
1.3
−25 ~ +75
−55 ~ +150
NOTE:
1. When mounted on 76.2mm × 114mm × 1.57mm PCB (Phenolic resin material)
2. Power dissipation is reduced 13.6 mW / °C for using above Ta=25°C
3. Do not exceed PD and SOA (Safe operating area).
Power Dissipation Curve
Pd (mW)
3,000
2,000
Unit
V
V
W
A
°C
°C
1,000
0
0
SOA
25 50
75 100 125 150 175
Ambient temperature, Ta [°C]
Recommended Operating Conditions (Ta=25°C)
Parameter
Supply voltage
Motor supply voltage
Symbol
VCC
VM
Min.
4.5
3.0
Typ.
5
12
Max Units
5.5 V
15 V
5
5 Page 
KA3011BD
6. REVERSE ROTATION PREVENTION
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 to the Gain Controller
zero. The output current of the Driver becomes zero and the motor stops.
• 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 by the reverse commutation in the Driver. When
the motor rotates in reverse direction, the D-F/F output becomes Low and the OR Gate output, 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
Reverse
H2 H3 D-F/F Reverse rotation preventer
(Q) EC<ECR EC>ECR
H H→L H
Forward
-
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
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet KA3011BD.PDF ] | |
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