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PDF BD6670FM Data sheet ( Hoja de datos )
| Número de pieza | BD6670FM | |
| Descripción | 3-phase spindle motor driver for CD-RW | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Motor driver ICs
BD6670FM
3Phase spindle motor driver for CD-RW
BD6670FM
BD6670FM is a 3-phase spindle motor driver adopting 180° PWM direct driving system. Noise occurred from the motor
driver when the disc is driver can be reduced. Low power consumption and low heat operation are achieved by using
DMOS FET in output and driving directly.
!Applications
mCD-RW
o!Features
.c1) 180 degree Direct-PWM driving system.
2) Built in power save circuit.
3) Built in current limit circuit.
U4) Built in FG-output.
5) Built in 3phase synthesized FG-output.
t46) Built in hall bias circuit.
7) Built in reverse protection circuit.
e8) Built in short brake circuit.
9) Low consumption by MOS-FET.
e10) Built in capacitor for oscillator.
h11) Built in gain switch and current limit switch.
S!Absolute maximum ratings (Ta=25°C)
taParameter
Symbol
Limits
Power supply voltage
aSupply voltage for motor
VCC
VM
7
15
VG pin voltage
.DOutput current
Power dissipation
VG
IOMAX
Pd
20
2500 ∗1
2200 ∗2
wJunction temperature
TJMAX
150
Operating temperature range
Topr
−20~+75
wStorage temperature range
Tstg
−55~+150
∗1 However, do not exceed Pd, ASO and Tj=150°C.
wThe current is guaranteed 3.0A in case of the current is turn on / off
Unit
V
V
V
mA
mW
°C
°C
°C
in a duty-ratio of less than 1/10 with a maximum on-time of 5msec.
∗2 70mm×70mm×1.6mm glass epoxy board.
Debating in done at 17.6mW / °C for operating above Ta=25°C.
!Recommended operating conditions
Parameter
Symbol Min. Typ. Max.
Power supply voltage
VCC 4.5 − 5.5
Supply voltage for motor
VG pin voltage
VM
VG
4.0 − 13.2
8.5 −
19
Unit
V
V
V
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1 page  
Motor driver ICs
BD6670FM
!Electrical characteristics (unless otherwise noted, Ta=25°C, VCC=5V, VM=12V)
Parameter
<Total>
Circuit current 1
Circuit current 2
<Power save>
ON voltage range
OFF voltage range
<Hall bias>
Hall bias voltage
<Hall AMP>
In-phase input voltage range
Minimum input level
Hall hysteresis level (+)
Hall hysteresis level (−)
<Gain switch>
Low voltage range
High voltage range
Open voltage range
<Torque control>
Input voltage range
Offset voltage (+)
Offset voltage (−)
Input current
Input / Output gain L
Input / Output gain M
Input / Output gain H
<Output>
Output ON-resistance
Torque limit current L
Torque limit current M
Torque limit current H
<FG / FG3 output>
High voltage
Low voltage
<Charge pump voltage>
Charge pump output voltage
<CP1 output>
Upper saturation voltage
Lower saturation voltage
<CP2 output>
Upper saturation voltage
Lower saturation voltage
Symbol
ICC1
ICC2
VPSON
VPSOFF
VHB
VHAR
VINH
VHYS+
VHYS−
VGSWL
VGSWH
VGSWOP
EC, ECR
Ecofs+
Ecofs−
ECIN
GECL
GECM
GECH
RON
ITLL
ITLM
ITLH
VFGH
VFGL
VPUMP
VCP1H
VCP1L
VCP2H
VCP2L
Min. Typ. Max. Unit
Conditions
Test Circuit
− 1 10 µA Stand by mode
7 12 17 mA
Fig.2
Fig.2
− − 1.0 V Stand by mode
2.5 −
−V
Fig.2
Fig.2
0.7 1.0 1.3 V IHB=10mA
Fig.2
1.4 − 3.6 V
80 −
− mVPP Oneside input level
5 20 40 mV
−40 −20
−5 mV
Fig.3
Fig.3
Fig.3
Fig.3
− − 0.6 V
2.0 −
−V
− 1.3 − V
Fig.4
Fig.4
Fig.4
0
5
−100
−11
0.28
0.56
1.12
−
50
−50
−2.5
0.35
0.70
1.40
5
100
5
0
0.42
0.84
1.68
V Linear range : 0.5V∼3.0V
mV
mV
µA EC=ECR=1.65V
A/V GSL=L, RNF=0.5Ω
A/V GSL=M, RNF=0.5Ω
A/V GSL=H, RNF=0.5Ω
Fig.6
Fig.6
Fig.6
Fig.6
Fig.7
Fig.7
Fig.7
−
340
680
1020
1.0
400
800
1200
1.35
460
920
1380
Ω IO=±600mA (Upper+Lower)
mA GSW=L, RNF=0.5Ω
mA GSW=M, RNF=0.5Ω
mA GSW=H, RNF=0.5Ω
Fig.8
Fig.4
Fig.4
Fig.4
4.6 −
− V IFG=−100µA
− − 0.4 V IFG=+100µA
Fig.5
Fig.5
12.5 17
19 V VCC=5V, VM=12V, CP1=CP2=0.1µF Fig.9
0.25 0.45 0.65
0.2 0.4 0.6
V ICP1=−4mA
V ICP1=+4mA
Fig.10
Fig.10
0.4 0.6 0.8
0.15 0.35 0.55
V ICP2=−4mA
V ICP2=+4mA
Fig.11
Fig.11
5/17
5 Page 
Motor driver ICs
!Circuit operation
1. Application
(1) Input-output table
Input condition
Pin No.
123456
H1+ H1− H2+ H2− H3+ H3−
Condition 1 L M H M M M
Condition 2 H M L M M M
Condition 3 M M L M H M
Condition 4 M M H M L M
Condition 5 H M M M L M
Condition 6 L M M M H M
Output condition
EC<ECR
EC>ECR
24 22 20 24 22 20
A1 A2 A3 A1 A2 A3
HL L LHH
LHHHL L
LHLHL H
HLHLH L
L LHHH L
HHL L L H
BD6670FM
(2) Hall input
Hall element can be used with both series and parallel connection. Determining R1 and R2, make sure to leave an
adequate margin for temperature and dispertion in order to satisfy in-phase input voltage range and minimum input
level.
A motor doesn’t reach the regular number of rotation, if hall input decrease under high temperature.
VCC
R1
H1 H2 H3
R2
VCC
R1
H1
H2
H3
R2
VH
Parallel connection
VH
Series connection
Fig.12
11/17
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet BD6670FM.PDF ] | |
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