BD6640KVT_11 [ROHM]
Silicon Monolithic Integrated Circuit; 硅单片集成电路
| 型号： | BD6640KVT_11 |
| 厂家： | 
ROHM |
| 描述： | Silicon Monolithic Integrated Circuit |
| 文件： | 总5页 (文件大小：224K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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Structure
Silicon Monolithic Integrated Circuit
4ch Sensorless System Motor Driver for MD
BD6640KVT
Product Series
Type
Features
・Operates at low power supply voltage (2.1V min)
・Power DMOS output with low ON resistance (0.8Ω Typ.)
・Incorporates a charge pump circuit for VG boost.
・3-phase full-wave soft-switching sensorless driver for spindle
・3-value control 3-phase driver for sled (built-in comparator for BEMF voltage detection)
・2ch, 3-value control H-bridges for focus/tracking
・PWM half-bridge for spindle VM power supply
○Absolute maximum ratings(Ta=25℃)
Parameter
Symbol
VCC
VM
Limit
7
Unit
V
Power supply voltage for control circuit
Power supply voltage for driver block
Power supply voltage for pre-driver block
Input voltage
7
V
VG
14
V
VIN
0～VCC
*500
V
Output current
Iomax
Pd
mA
mW
℃
℃
℃
Power dissipation
**1250
-25～+75
-55～+150
+150
Operating temperature range
Storage temperature range
Junction temperature
Topr
Tstg
Tjmax
＊Must not exceed Pd or ASO, Tjmax=150℃.
＊＊Reduced by 10mW/°C over Ta=25°C, when mounted on a glass epoxy board (70mm70 mm1.6mm).
○Operating conditions (Ta=-25～+75°C)
Parameter
Symbol
VCC1,2
VM
Min.
Typ.
2.2
-
Max
6.5
5.0
13
Unit
V
2.1
Power supply voltage
Pulse input frequency
-
3
-
V
VG
6.5
-
V
fin
500
kHz
This product described in this specification is not judged whether it applies to COCOM regulations.
Please confirm in case of export.
This product is not designed for protection against radioactive rays.
REV. C
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○Electrical characteristics
(Unless otherwise specified, Ta=25°C, VCC1, 2=2.2V, VM=1.0V, fin=176kHz)
Limit
Parameter
Symbol
Unit
Conditions
Min.
Typ.
4.4
1
Max.
7.0
ICC
IST
-
-
mA
at operation in all blocks
at standby in all blocks
Circuit current
10
μA
upper and lower ON
Output ON resistance
～Boost circuit～
Output voltage
RON
-
0.8
1.2
Ω
resistance in total VG=10V
VG1
VG2
5.5
4.4
6.5
5.2
6.7
V
V
each input L
－
at operation in all blocks
～Oscillation circuit～
Self-propelled oscillating frequency
External clock synchronous range
fOSC
50
100
160
500
kHz
kHz
fSYNC
－
－
input from EXTCLK pin
～Spindle (3-phase full-wave sensorless driver) block～
Position
detection
comparator
VCO
VCD
ICTO
ICTI
-10
0
－
－
+10
VCC-
-0.9
7.5
mV
V
Detection comparator input range
CST charge current
-3.5
1.0
-3.5
1.2
0.7
－
-2.1
3.6
-7.5
3.0
0.8
－
μA
mA
μA
μA
V
CST=1V
CST discharge current
CSL charge current
CST=1V
ICLO
ICLI
-13
CSL=0.5V
CSL=0.5V
CSL discharge current
CSL clamp H voltage
6.5
VCLH
IBR
0.9
Brake comparator input current
Brake comparator input offset
Brake comparator input range
FG output pull-up resistance
FG output L voltage
2.0
μA
mV
V
BRK=VCC
VBO
VBD
RBF
-15
0
－
+15
VCC-1
30
－
10
20
kΩ
V
VOLF
VRO
VRP
VMCK
－
0.2
18
0.3
Io=300μA
RIB offset voltage
10
30
mV
mV
mV
VM=0V RIB=500Ω
Pre-drive loop gain
500
400
650
500
850
600
M-phase check
～Sled, focus, tracking, PWM power supply (stepping, H-bridge, and half-bridge driver) block～
Logic H level input voltage
Logic L level input voltage
VINH
VINL
VCC-0.4
－
－
VCC
0.4
1
V
V
0
－
－
-1
IINH1
IINH2
IINL
－
μA
VIN=2.2V
Logic H level input current
Logic L level input current
350
－
600
－
μA
VIN=2.2V EXTCLK pin
VIN=0V
μA
TRISE
TFALL
tmin
－
－
120
0.2
0.1
－
1
μsec
μsec
nsec
Output propagation delay time
Short pulse response
0.7
－
input pulse width 200 ns
◎This product is not designed for protection against radioactive rays.
REV. C
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○Package outlines
Type
BD6640KVT
Lot No.
TQFP64V outlines (Unit：mm)
○Block diagram
○Pin No./Pin name
NO.
NO.
Pin name
Pin name
ー
ー
ー
1
IN1R
IN2F
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
S3
BEMFU
BEMFV
BEMFW
SLCOM
SLPG2
SLWOUT
SLVM2
SLVOUT
SLPG1
SLUOUT
SLVM1
VCC2
ー
2
3
IN2R
4
STALL
STHB
SPVM1
SPUOUT
SPPG1
N.C
5
MAT R IX
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
SPVOUT
SPVM2
SPWOUT
SPPG2
PWVM
PWOUT
PWPG
PWIN1
SPUIN
SPVIN
SPWIN
SPCOM
RIB
VCC1
VG
C2M
C2P
C1M
C1P
EXTCLK
N.C
H2PG2
H2ROUT
H2VM
CST
CSL1
CSL2
H2FOUT
H2PG1
H1PG2
H1ROUT
H1VM
FG
BRK+
BRK-
+
－
+
－
ASGND
SGND
S1
+
－
H1FOUT
H1PG1
IN1F
S2
REV. C
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○Notes on the use
(1) Absolute maximum ratings
If the input voltage or the operating temperature range exceeds absolute maximum ratings, IC may be damaged. No
destruction mode (e.g., short-circuiting or open) can be specified in that case. If such special mode as will exceed
absolute maximum ratings is assumed, take the physical safety measures, such as a fuse.
(2) Power supply lines
The regenerated current by BEMF of the motor will return. Therefore, take measures, such as the insertion of a capacitor
between the power supply and GND as the pass of the regenerated current. Determine the capacitance in full consideration
of all the characteristics of the electrolytic capacitor, because the electrolytic capacitor may loose some capacitance at low
temperatures. If the connected power supply does not have sufficient current absorption capacity, regenerative current will
cause the voltage of the power supply line to rise, which the product and its peripheral circuit may exceed the absolute
maximum ratings. It is recommended to implement physical safety measures such as the insertion of a voltage clamp diode
between the power supply and GND pins.
(3) Ground potential
Ensure a minimum GND pin potential in all operating conditions.
(4) Design for heat
Use the design for heat that allows for a sufficient margin in light of the power dissipation (Pd) in actual using conditions.
(5) Operation in strong magnetic field
Use caution when using the IC in the strong magnetic field as doing so may cause the IC to malfunction.
(6) ASO
When using the IC, make settings so that the output transistors for the motor will not be used under conditions in excess
of the absolute maximum ratings and ASO.
(7) Thermal shutdown circuit
This IC incorporates thermal shutdown circuit(TSD circuit).
When the chip temperature becomes the one shown in below, TSD circuit operates and makes the coil output to motor
open. It is designed to shut the IC off from runaway thermal operation. It is not designed to protect the IC or guarantee its
operation. Do not continue to use the IC after operating this circuit or use the IC in an environment where the operation of
this circuit is assumed.
TSD ON temperature[℃] (typ.)
Hysteresis temperature [℃] (typ.)
175
20
(8) Ground wiring pattern
When having both small signal and large current GND, it is recommended to isolate the two GND patterns, placing a
single ground point at the application's reference point so that the pattern wiring resistance and voltage variations caused
by large currents do not cause voltage variations of the small signal GND. Be careful not to change the GND wiring
pattern of any external parts, either.
REV. C
Notice
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