BD6669FV
Motor driver ICs
3Phase spindle motor driver for CD-ROM
BD6669FV
BD6669FV is a 3-phase spindle motor driver adopting 180° PWM direct driving system. Noise occurred from the motor
driver when the disc is driven can be reduced. Low power consumption and low heat operation are achieved by using
DMOS FET and driving directly.
zApplications
CD-ROM
zFeatures
1) Direct-PWM-Linear driving system.
2) Built in power save circuit.
3) Built in current limit circuit.
4) Built in FG-output.
5) Built in hall bias circuit.
6) Built in reverse protection circuit.
7) Built in short brake circuit.
8) Low consumption by MOS-FET.
9) Built in capacitor for oscillator.
10) Built in rotation detect.
zAbsolute maximum ratings (Ta=25°C)
Parameter
Symbol
Limits
Unit
Power supply voltage
VCC
7
V
Supply voltage for motor
VM
7
V
VG pin voltage
VG
Output current
IOMAX
1000 ∗1
mA
Pd
1020 ∗2
mW
Power dissipation
20
V
150
°C
Topr
−20 to +75
°C
Tstg
−55 to +150
°C
Junction temperature
TjMAX
Operating temperature range
Storage temperature range
∗1 However, do not exceed Pd, ASO and Tj=150°C.
∗2 70mm×70mm×1.6mm glass epoxy board.
Reduce power by 8.16mW for each degree above 25°C.
zRecommended operating conditions
Symbol
Min.
Typ.
Max.
Power supply voltage
VCC
4.5
−
5.5
V
Supply voltage for motor
VM
3
−
6.5
V
VG pin voltage
VG
7.5
−
14
V
Parameter
Unit
This product described in this specification isn't judged whether it applies to cocom regulations.
Please confirm in case of export.
This product is not designed for protection against radioactive rays.
Rev.A
1/16
BD6669FV
Motor driver ICs
zBlock diagram
PS
1
28
RNF1
27
PS
26
FG
25
EC
24
ECR
−
A31
23
VM2
Current
sense AMP
22
VCC
21
RNF2
20
SB
19
CNF
18
VPUMP
17
CP2
16
CP1
15
GND
U-Pre
A32
2
A21
3
Driver
Matrix
Driver
A22
4
A11
5
Torque
AMP
+
−
L-Pre
A12
6
V M1
7
VH
8
+
Driver
TSD
H1+
H1−
9
10
Hall
bias
Hall comp
CL
EXOR
OSC
+
−
+
+
−
−
PWM
Comp
Hall Amp
H2+
H2−
H3+
H3−
11
12
13
14
Matrix
+
−
+
+
−
−
Charge
Pump
+
−
+
+
−
−
D
Q
Reverse Detect
CK
Fig.1
Rev.A
2/16
BD6669FV
Motor driver ICs
zPin descriptions
Pin No.
Pin name
Function
1
A31
Output3 for motor
2
A32
Output3 for motor
3
A21
Output2 for motor
4
A22
Output2 for motor
5
A11
Output1 for motor
6
A12
Output1 for motor
7
VM1
Power supply fo driver
8
VH
Hall bias pin
9
H1+
Hall input AMP 1 positive input
10
H1−
Hall input AMP 1 negative input
11
H2+
Hall input AMP 2 positive input
12
H2−
Hall input AMP 2 negative input
13
H3+
Hall input AMP 3 positive input
14
H3−
Hall input AMP 3 negative input
15
GND
GND
16
CP1
Capacitor pin 1 for charge pump
17
CP2
Capacitor pin 2 for charge pump
18
VPUMP
19
CNF
20
SB
21
RNF2
Resistor connection pin for current sense
22
VCC
Power supply for signal division
23
VM2
Power supply for driver
24
ECR
Torque control standard voltage input terminal
25
EC
Torque control voltage input terminal
26
FG
FG output pin
27
PS
Power save pin
28
RNF1
Capacitor connection pin for charge pump
Capacitor connection pin for phase compensation
Short brake pin
Resistor connection pin for current sense
Rev.A
3/16
BD6669FV
Motor driver ICs
zInput output circuits
Hall input
H1+ : Pin9, H1− : Pin10, H2+ : Pin11, H2− : Pin12,
H3+ : Pin13, H3− : Pin14
Output pins
A1 : Pin1, 2, A2 : Pin3, 4, A3 : Pin5, 6
VCC
VCC
VM
Hn+
Hn
1k
A1
A2
1k
A3
1k
1k
5k
RNF1
Hall bias
CP1 output
CP2 / VPUMP output
Pin8
Pin16
CP2 : Pin17, VPUMP : Pin18
VCC
VCC
VH (Pin8)
VCC
VPUMP (Pin18)
VM
CP1 (Pin16)
50
CP2 (Pin17)
100k
CNF
Short brake
RNF2
Pin19
Pin20
Pin21
VCC
VCC
CNF (Pin19)
50
VCC
SB (Pin20)
355
30k
RNF2 (Pin21)
1k
20k
2k
2k
Torque amplifier
FG output
Power save
ECR : Pin24, EC : Pin25
FG : Pin26
Pin27
VCC
VCC
VCC
VCC
ECR (Pin24)
EC (Pin25)
50
FG (Pin26)
PS (Pin27)
30k
1k
20k
Rev.A
4/16
BD6669FV
Motor driver ICs
zElectrical characteristics (unless otherwise noted, Ta=25°C, VCC=5V, VM=5V)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Test Circuit
Conditions
<Total>
Circuit current 1
ICC1
−
−
5
µA
Circuit current 2
ICC2
5
11
17
mA
Fig.2
Sutand by mode
Fig.2
<Power save>
ON voltage range
VPSON
−
−
1.0
V
OFF voltage range
VPSOFF
2.5
−
−
V
VHB
0.6
1.0
1.4
V
Fig.2
Sutand by mode
Fig.2
<Hall bias>
Hall bias voltage
IHB=10mA
Fig.2
<Hall AMP>
IHA
−8.0
−2.0
−
µA
In-phase input voltage range
VHAR
1.4
−
3.6
V
Minimum input level
VINH
100
−
−
mVPP
Hall hysteresis level (+)
VHYS+
5
20
40
mV
Fig.8
Hall hysteresis level (−)
VHYS−
−40
−20
−5
mV
Fig.8
Input voltage range
EC, ECR
0
−
5
V
Offset voltage (+)
Ecofs+
5
50
100
mV
Offset voltage (−)
Ecofs−
−100
−50
−5
mV
ECIN
−12
−2.5
−
µA
EC=ECR=1.65V
Fig.6
ON voltage range
VSBON
2.5
−
−
V
Short brake
Fig.7
OFF voltage range
VSBOFF
−
−
1.0
V
Input / Output gain
GEC
0.8
1.0
1.2
A/V
Output ON-resistance
RON
0.3
0.5
0.7
Ω
Torque limit voltage
VTL
0.16
0.2
0.24
V
High voltage
VFGH
4.6
−
−
V
IFG=−100µA
Fig.6
Low voltage
VFGL
−
−
0.4
V
IFG=+100µA
Fig.6
Vpump
6
10
14
V
VCC=VM=5V
Fig.9
Input bias current
Fig.4
Fig.4
Fig.4
Hall input Amp
<Torque control>
Input current
Linear range 0.5V∼3.3V
Fig.6
Fig.6
Fig.6
<Short brake SW>
Fig.7
<Output>
Fig.6
IO=±600mA (Upper+Lower)
Fig.5
Fig.3
<FG output>
<Charge pump voltage>
Charge pump output voltage
zMeasuring circuit
1. Value of resistor (Fig.2∼Fig.9)
A1
5, 6pin
A2
3, 4pin
A3
1, 2pin
13, 16pin
RNF
RL
GND
RL=5Ω, RNF=0.33Ω
Rev.A
5/16
BD6669FV
Motor driver ICs
2. Input-output table
Output condition
Input condition
EC<ECR
EC>ECR
23
24
25
26
27
28
H1+
H1−
H2+
H2−
H3+
H3−
A1
A2
A3
A1
A2
A3
L
M
H
M
M
M
H
L
L
L
H
H
Condition2
H
M
L
M
M
M
L
H
H
H
L
L
Condition3
M
M
L
M
H
M
L
H
L
H
L
H
Condition4
M
M
H
M
L
M
H
L
H
L
H
L
Condition5
H
M
M
M
L
M
L
L
H
H
H
L
Condition6
L
M
M
M
H
M
H
H
L
L
L
H
Pin No.
Condition1
17.18 14.15 11.12 17.18 14.15 11.12
Output logic
H : Upper Tr ON
L : Lower Tr ON
Input voltage
H=2.8V
M=2.5V
L=2.2V
3. Measuring circuit
10kΩ
5V
VPS
A
RL
RL
RL
ICC1 : Value of A1
VPS=0 [V]
Hall input condition : condition1
CP
CP2
VPUM
GN
H3
−
H3+
H2−
SB
VCC
CNF
H1−
H1+
VH
RNF2
10
VM
ECR
VM
A1
A1
FG
EC
A2
A2
PS
A3
RNF1
1.65V
H2+
RNF
A3
0.01µF
ICC2 : Value of A1
VPS=5 [V]
Hall input condition : condition1
VHB : Value of V1
VPS=5 [V]
IHB=10 [mA]
VPSON : Range of Vps output pins become
input-output table.
5V
H1
V
IHB
H1
H2
H2
H3
H3
VPSOFF : Range of Vps output pins become
open.
Fig.2
Rev.A
6/16
BD6669FV
Motor driver ICs
VRNF2
1.65V
5V
5V
VPUM
CP2
CP
GN
H2+
H2−
H3+
−
H3
SB
CNF
H1−
VM
A1
H1+
ECR
A1
VCC
EC
A2
RNF2
FG
A2
VM
PS
A3
A1
RL
RL
RL
VH
RNF1
A3
VTL : Range of VRNF2 that VM current (IM)
become 0A.
VPS=5 [V]
H1+ H1− H2+ H2− H3+ H3−
5V
Fig.3
10kΩ
+
RNF
5V
GN
H3−
CP
H3+
CP2
H2−
VPUM
H2
CNF
A2
VHAR : HALL voltage range that output pins
become input-output table.
VINH : HALL input level that output pins
become input-output table.
A1
A2
A1
A2
VINH : Hn −Hn
−
Hn =2.5 V
+
H1−
SB
H1
RNF2
VH
VM
A1
A1
A2
A2
A3
A1
+
RL
RL
RL
−
IHA : Value of 'A1' (Hn =2.5V, Hn =2.0V)
+
−
Value of 'A2' (Hn =2.0V, Hn =2.5V)
n=1, 2, 3
10V
+
VCC
VM
EC
FG
PS
RNF1
ECR
1.65V
5V
A3
0.01µF
−
5V
H1+ H1− H2+ H2− H3+ H3−
Fig.4
Rev.A
7/16
BD6669FV
Motor driver ICs
CP
VOH : In case output measurement pin='H' by
input condition and IO=−600mA,
value of 'VOH'
GN
CP2
VPUM
SB
CNF
RNF2
VCC
5V
VM
EC
ECR
1.65V
FG
PS
RNF1
5V
5V
A1 5, 6pin
A2 3, 4pin
A3 1, 2pin
H3
Ron=(VOH + VOL) / 0.6
H1+ H1− H2+ H2− H3+ H3−
A1 5, 6pin
A2 3, 4pin
A3 1, 2pin
600mA
−
H3+
H2−
H2+
H1−
H1+
VH
VM
A1
A1
A2
A2
A3
A3
VOL : In case output measurement pin='L' by
input condition and IO=600mA,
value of 'VOL'
600mA
VOH
VOL
VM
RNF1
Fig.5
IFG
A1
10kΩ
EC, ECR : Torque control operating range.
VEC VECR
RNF
A2
A3
5V
5V
10V
GN
CP
CP2
VPUM
CNF
SB
RNF2
VCC
VM
ECR
EC
FG
PS
RNF1
ECIN : Value of 'A2' (EC=ECR=1.65V)
Value of 'A3' (EC=ECR=1.65V)
RL
RL
RL
H3
−
H3+
H2−
H2+
H1
−
H1+
VH
VM
A1
A1
A2
A2
A3
VFGH : Value of V1 (IFG=−100µA)
Hall input condition 3.
VFGL : Value of V1 (IFG=+100µA)
Hall input condition 4.
A3
0.01µF
ECOFS : EC voltage range that VM current (IM)
is 0A.
GEC= { (V1−V2) / (1.5−1.2) } / 0.5
When ECR=1.65V
value of V1 (EC=1.2V)
value of V2 (EC=1.5V)
A1
5V
H1
H1
H2
H2
H3
H3
Fig.6
Rev.A
8/16
BD6669FV
Motor driver ICs
10kΩ
VSB
0.01µF
RNF
1.65V
5V
5V
10V
CP2
CP
H2−
+
GN
VPUM
H2+
H3−
H3
SB
CNF
H1−
H1+
VCC
RNF2
VM
VM
VH
ECR
EC
A1
VSBOFF : Range of 'VSB' that output pins
become input-output table.
5V
RL
RL
RL
A1
A2
PS
FG
A3
A2
RNF1
A3
VSBON : Volatge range of 'VSB' that output
pins become 'L'.
H1+ H1− H2+ H2− H3+ H3−
Fig.7
10kΩ
RNF
1.65V
5V
5V
10V
RL
VPUM
CP2
CP
H2+
H2−
H3+
GN
CNF
H1−
H3−
SB
H1+
VCC
VM
RNF2
VM
A1
RL
VH
EC
ECR
FG
A2
A1
PS
A3
RL
A2
RNF1
VHYS : Voltage difference H3+ to H3− that FG
voltage change V1.
A3
0.01µF
5V
H1+ H1− H2+ H2− H3+ H3−
V1
Fig.8
Rev.A
9/16
BD6669FV
Motor driver ICs
10kΩ
0.1µF
V1
RNF
5V
1.65V
5V
0.1µF
RL
VPUM
CP2
CP
GN
H2+
H2−
H3+
−
H3
SB
VM
CNF
VCC
A1
H1−
VM
A1
H1+
ECR
A2
RL
RNF2
EC
A2
RL
VH
PS
FG
A3
RNF1
VPUMP : Value of V1.
A3
0.01µF
5V
H1+ H1− H2+ H2− H3+ H3−
Fig.9
Rev.A
10/16
BD6669FV
Motor driver ICs
zCircuit operation
1. Application
(1) 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 level decrease under high temperature.
VCC
VCC
R1
R1
H1
H1
H2
H2
H3
H3
R2
R2
VH
VH
Parallel connection
Series connection
Fig.10
2.Torque voltage
By the voltage difference between EC and ECR, the current driving motor changes as shown in Fig.11 below.
IM [A]
Forward torque
Reverse torque
ITL
0
ECR
EC [V]
Fig.11
The gain of the current driving motor for the voltage of EC can be changed by the resistance of RNF.
Rev.A
11/16
BD6669FV
Motor driver ICs
(3) Current limit
The maximum value of the current driving motor can be changed by the resistance of RNF.
ITLL=0.2 / RNF (A)
(4) Short brake
The short brake is switched by SB pin and its operation is shown in table below.
SB
EC < ECR
EC > ECR
L
Rotating forward
Reverse brake
H
Short brake
Short brake
Output upper (3phase) FET turn off and lower (3phase) FET turn on in short brake mode, as shown Fig.12.
VM
OFF
OFF
OFF
ON
ON
ON
RNF
MOTOR
Fig.12
(5) Reverse detection
Reverse detection is constructed as shown in Fig.13. Output is opened when EC>ECR and the motor is rotating
reverse.
H2+
+
H2−
−
D
Q
OUT
H3+
+
H3−
−
CK
EC
+
ECR
−
Fig.13
Rev.A
12/16
BD6669FV
Motor driver ICs
Motor rotation at reverse detection
Forward rotation (forward torque) when EC < ECR
Deceleration (reverse torque) when EC > ECR
Reverse detection is triggered and set outputs to open,
when motor rotates in the reverse direction.
Motor idles in the reverse direction by inertia.
Stop
Rev.A
13/16
BD6669FV
Motor driver ICs
(6) Timing chart
H1+
H2+
H3+
30°
A1 Output current
A1 Output voltage
A2 Output current
A2 Output voltage
A3 Output current
A3 Output voltage
Fig.14
Rev.A
14/16
BD6669FV
Motor driver ICs
zApplication example
A31
RNF1
PS
A32
0.33
PS
U-Pre
Driver
VCC
A21
FG
Matrix
Driver
A22
Torque
AMP
EC
Servo
signal
+
A11
−
L-Pre
ECR
Driver
A12
Current
sense AMP
VH
H1+
CL
EXOR
OSC
H1−
−
+
+
−
−
H2+
10kΩ
Matrix
VCC
CNF
PWM
Comp
Hall Amp
1µF
RNF2
SB
+
H1
10µF
VCC
TSD
Hall
bias
Hall comp
−
+
VM1
100Ω
1.65V
VM2
VPUMP
100pF
+
H2
H2−
−
+
+
−
0.1µF
CP2
−
Charge
Pump
H3+
+
H3
H3−
−
+
+
−
0.1µF
CP1
GND
−
D
100Ω
Q
Reverse Detect
CK
Fig.15
zOperation notes
1. Absolute maximum ratings
Absolute maximum ratings are those values which, if exceeded, may cause the life of a device to become significantly
shorted. Moreover, the exact failure mode cannot be defined, such as a short or an open. Physical countermeasures,
such as a fuse, need to be considered when using a device beyond its maximum ratings.
2. GND potential
The GND terminal should be the location of the lowest voltage on the chip. All other terminals should never go under
this GND level, even in transition.
Rev.A
15/16
BD6669FV
Motor driver ICs
3. Thermal design
The thermal design should allow enough margin for actual power dissipation.
4. Mounting failures
Mounting failures, such as misdirection or mismounts, may destroy the device.
5. Electromagnetic fields
A strong electromagnetic field may cause malfunctions.
6. Coil current flowing into VM
A coil current-flows from motor into VM when torque control input changes from EC<ECR into EC>ECR, and VM
voltage rises if VM voltage source doesn’t have an ability of current drain.
Make sure that surrounding circuits work correctly and aren’t destroyed, when VM voltage rises.
Physical countermeasures, such as a diode for voltage clamp, need to be considered under these conditions.
7. CNF pin
An appropriate capacitor (100pF (typ.)) at CNF pin make motor current smooth. Make sure the motor current doesn’t
oscillate, even in transition.
zElectrical characteristics curve
Pd (W)
1.02
0.50
0
0
25
50
75
100
125
150
Ta (°C)
∗ 70mm×70mm×1.6mm glass epoxy board.
∗ Reduce power by 8.16mW for each degree above 25°C.
Fig.16 Power dissipation curve
zExternal dimensions (Units : mm)
10.0±0.2
15
1
14
1.15±0.1
0.1
0.3Min.
7.6±0.3
5.6±0.2
28
0.65
0.15±0.1
0.1
0.22±0.1
SSOP-B28
Rev.A
16/16
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.1