BD6641KUT_11 [ROHM]
Silicon Monolithic Integrated Circuit; 硅单片集成电路
| 型号： | BD6641KUT_11 |
| 厂家： | 
ROHM |
| 描述： | Silicon Monolithic Integrated Circuit |
| 文件： | 总5页 (文件大小：173K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
1/4
Structure
Silicon Monolithic Integrated Circuit
4ch PWM Sensorless System Motor Driver for MD
BD6641KUT
Products 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 PWM 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
○Absolute maximum ratings (Ta=25°C)
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
**1375
-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 11mW/°C over Ta=25°C, when mounted on a glass epoxy board (70mm70 mm1.6mm).
○Operating conditions (Ta=-25～+75℃)
Parameter
Symbol
VCC
VM
Min.
2.1
－
Typ.
2.2
－
Max.
6.5
3.0
13
Unit
V
Power supply voltage
V
VG
3
6.5
V
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. B
2/4
○Electrical characteristics (Unless otherwise specified, Ta=25°C, VCC=2.2V, VM=1.0V, fin=176kHz)
Limit
Parameter
Symbol
Unit
Conditions
Min.
Typ.
Max.
～Spindle (3-phase full-wave sensorless driver)～
Position detection comparator offset
Position detection comparator input range
Position detection comparatorinput current H
Position detection comparatorinput current L
SLOPE charge current
VSOFS
VSD
-10
0
-
-
10
VCC-1.0
2
mV
V
ISH
-
-
μA
μA
μA
μA
V
input=VCC
input=0V
ISL
-2
-
-
ISLO
-12.8
6.5
0.5
0.3
70
-9.8
9.4
0.8
0.46
100
-9.65
9.56
0.75
0.53
505
132
-
-6.8
12.5
1.1
SLOPE discharge current
SLOPE clamp H level
ISLI
VSLH
VSLL
fOSC
IOSCO
IOSCI
VOSCH
VOSCL
VSET
ｆPWM
VPWH
VPWL
IPWH
IPWL
SLOPE clamp L level
0.6
V
OSC oscillating frequency
OSC charge current
130
-6.5
12.5
1.0
kHz
μA
μA
V
OSC=200pF ISET=50kΩ
-12.5
6.5
0.5
0.35
350
60
OSC discharge current
OSC H level
OSC L level
0.70
650
200
VCC
0.4
V
ISET voltage
mV
kHz
V
ISET=50kΩ
PWM input frequency
PWM H level input voltage
PWM L level input voltage
PWM H level input current
PWM L level input current
VCC-0.4
0
-
V
-
-
1
μA
μA
PWM=VCC
-1
-
-
PWM=0V
Brake ON(BD6641KUT)
Brake OFF(BD6643KN)
Brake OFF(BD6641KUT)
Brake ON(BD6643KN)
BRAKE=VCC
BLAKE H level input voltage
BLAKE L level input voltage
VBKH
VBKL
VCC-0.4
0
-
-
VCC
0.4
V
V
BLAKE H level input current
BLAKE L level input current
FG H level output voltage
FG L level output voltage
IBKH
IBKL
-
-
-
-
-
1
-
μA
μA
V
-1
VCC-0.4
0
BRAKE=0V
VFGH
VFGL
VCC
0.4
Io=-500μA
V
Io=500μA
～Sled, focus, tracking (stepping, H-bridge 2ch)～
H level input voltage
L level input voltage
H level input current
L level input current
VINH
VCC-0.4
-
VCC
V
V
VINL
IINH
0
-
-
-
0.4
1
μA
μA
μs
μs
ns
VIN=VCC
VIN=0V
IINL
-1
-
-
-
TRISE
TFALL
tmin
0.2
0.1
-
1
I/O propagation delay time (H-bridge)
-
0.7
-
Short pulse input response (H-bridge)
～Sled, position detection comparator～
Position detection comparator offset
120
Input pulse width 200 ns
VAOFS
VAD
-10
0
-
-
10
mV
V
Position detection comparator input range
Position detection comparator input current H
Position detection comparator input current L
Position detection comparator output voltage L
Position detection comparator output pull-up resistance
VCC-1.0
IAH
-
-
2
-
μA
μA
V
IAL
-2
-
-
VAOL
ROA
0.2
20
0.3
30
Io=300μA
10
kΩ
◎This product is not designed for protection against radioactive rays.
REV. B
3/4
○Package outlines
Type
BD6641KUT
Lot No.
TQFP64U outlines (Unit：mm)
○Block diagram
○Pin No./Pin name
S2
(1)
S3
(2)
BEMFU
(15)
STBY
(32)
S1
(64)
BEMFV
(16)
BEMFW
(17)
VCC
(40)
NO.
Pin name
NO.
Pin name
1
S2
S3
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
BRK
SPCOM
SLOPE
N.C
VG
VG
IN1F
(18)
2
SLED
PreDriver
H1
PreDriver
SLED
SLCOM
(51)
Decoder
3
VG
IN1R
(19)
4
N.C
SLVM
(44)
H1VM
(12)
3
5
H2VM
N.C
SPVM
MSK
SLUOUT
(52)
H1FOUT
(20)
6
SLED
BEMF
Detector
SLVOUT
(54)
H1ROUT
(22)
7
C2M
ISET
SLWOUT
(56)
8
C2P
VCC
H1PG
(21)
VG
9
GND
N.C
4
SLPG
(53)
IN2F
(62)
H2
PreDriver
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
C1M
OSC
T.S.D
RLV1
(50)
IN2R
(63)
N.C
N.C
RLV2
(48)
VM
H1VM
N.C
SLVM
FG
H2VM
(5)
Detect
Level
H2FOUT
(59)
C1P
FLT1
FLT1
(46)
FLT2
(47)
H2ROUT
(61)
BEMFU
BEMFV
BEMFW
IN1F
FLT2
VG
-
+
SPCOM
(34)
H2PG
(60)
RLV2
SGND
RLV1
SLCOM
SLUOUT
SLPG
SLVOUT
N.C
Selector
3
VG
(3)
VG
C1P
(14)
PWM
Switching
Predriver
Charge
Pump
IN1R
C1M
(10)
Spindle
BEMF
H1FOUT
H1PG
H1ROUT
N.C
Detector
C2P
(8)
SPVM
(37)
C2M
(7)
SPUOUT
(25)
BRK
(33)
Commutation Logic
&
Start-Up Logic
PWM
(31)
SPVOUT
(27)
N.C
SLWOUT
N.C
SPWOUT
(29)
SPUOUT
N.C
SPPG
(28)
N.C
Mask
SET
Slope Osc.
Triangle
SPVOUT
SPPG
SPWOUT
N.C
H2FOUT
H2PG
H2ROUT
IN2F
N.C.
Wave
(4,6,11,13,23,
24,26,30,36,41,
43,55,57,58)
Generator
SLOPE
(35)
FG
(45)
ISET
(39)
OSC
(42)
SGND
(49)
MSK
(38)
GND
(9)
PWM
STBY
IN2R
S1
REV. B
4/4
○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.
(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. B
Notice
N o t e s
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The technical information specified herein is intended only to show the typical functions of and
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