BD6718FV.pdf 데이터시트 (총 30 페이지) - 파일 다운로드 BD6718FV 데이타시트 다운로드

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TECHNICAL NOTE
DC Brushless Motor Drivers for Cooling Fans
Speed Controllable
Single-phase Full-wave
DC Brushless Fan Motor Drivers
BD6709FS, BD6718FV, BD6721FS, BD6722FS
Description
This is the summary of models that suit for 12V speed controllable fan for desktop PC and general consumer equipment.
They employ Bi-CDMOS process, and realize low ON resistance, low power consumption. They incorporate lock protection
and automatic restart circuit, current limiting circuit.
Features
1) Power Tr incorporated (BD6709FSBD6721FS)
2) Pre-driver compatible for external Tr (BD6718FV)
3) Low side power Tr incorporated half pre-driver (BD6722FS)
4) Current limiting circuit
5) PWM soft switching driver (BD6721FSBD6722FS)
6) Soft start circuit (BD6722FS)
7) Lock protection and automatic restart circuit
8) Rotating speed pulse signal (FG) output
9) Lock alarm signal (AL) output (BD6718FVBD6721FSBD6722FS)
Application
For 12V fan for desktop PC, server and general consumer equipment
Lineup
12V speed controllable
single-phase full-wave
Soft switching not available
Soft switching available
Power Tr incorporated BD6709FS
Pre-driver
BD6718FV
Power Tr incorporated BD6721FS
Half pre-driver
BD6722FS
Jan. 2007

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Absolute Maximum Ratings
BD6709FS
Parameter
Symbol
Supply voltage
Vcc
Power dissipation
Pd
Operation temperature
Topr
Storage temperature
Tstg
Output current
Iomax
FG signal output current
IFG
FG signal output voltage
VFG
Junction temperature
Tjmax
Reduce by 6.5mW/over 25.
(On 70.0mm×70.0mm×1.6mm glass epoxy board)
** This value is not to exceed Pd.
BD6718FV
Parameter
Symbol
Supply voltage
Vcc
Power dissipation
Pd
Operation temperature
Topr
Storage temperature
Tstg
High side output voltage
VOH
Low side output voltage
VOL
Low side output current
Iomax
FG signal output current
IFG
FG signal output voltage
VFG
AL signal output current
IAL
AL signal output voltage
VAL
VREF current ability
IVREF
HB current ability
IHB
Junction temperature
Tjmax
Reduce by 6.5mW/over 25.
(On 70.0mm×70.0mm×1.6mm glass epoxy board)
BD6721FS
Parameter
Symbol
Supply voltage
Vcc
Power dissipation
Pd
Operation temperature
Topr
Storage temperature
Tstg
Output current
Iomax
FG signal output current
IFG
FG signal output voltage
VFG
AL signal output current
IAL
AL signal output voltage
VAL
VREF current ability
IVREF
Junction temperature
Tjmax
Reduce by 6.5mW/over 25.
(On 70.0mm×70.0mm×1.6mm glass epoxy board)
** This value is not to exceed Pd.
Limit
17
812.5
-40+95
-55+150
1.2**
10
15
150
Limit
15
812.5
-40+95
-55+150
36
15
20
8
15
8
15
4
8
150
Limit
20
812.5
-40+100
-55+150
1.0**
10
20
10
20
8
150
2/40
Unit
V
mW
A
mA
V
Unit
V
mW
V
V
mA
mA
V
mA
V
mA
mA
Unit
V
mW
A
mA
V
mA
V
mA

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BD6722FS
Parameter
Symbol
Supply voltage
Vcc
Power dissipation
Pd
Operation temperature
Topr
Storage temperature
Tstg
High side output voltage
VOH
Low side output voltage
VOL
Low side output current
Iomax
Signal output current
IFG/IAL
Signal output voltage
VFG/VAL
VREF current ability
IVREF
VTH input voltage
VVTH
Junction temperature
Tjmax
Reduce by 6.5mW/over 25.
(On 70.0mm×70.0mm×1.6mm glass epoxy board)
** This value is not to exceed Pd.
Limit
20
812.5
-40+100
-55+150
34
34
1.5**
10
20
8
15
150
Unit
V
mW
V
V
A
mA
V
mA
V
OPERATING CONDITIONS
BD6709FS
Parameter
Operating supply voltage range
Hall input voltage range
BD6718FV
Parameter
Operating supply voltage range
Hall input voltage range
BD6721FS
Parameter
Operating supply voltage range
Hall input voltage range
VTH input voltage range
VMIN input voltage range
BD6722FS
Parameter
Operating supply voltage range
Hall input voltage range
VMIN input voltage range
Symbol
Vcc
VH
Limit
6.014.0
0.5Vcc-1.5
Symbol
Vcc
VH
Limit
4.514.0
0Vcc-2.0
Unit
V
V
Unit
V
V
Symbol
Vcc
VH
VVTH
VVMIN
Limit
5.017.0
0Vcc-2.0
0Vcc-2.0
0Vcc-2.0
Symbol
Vcc
VH
VVMIN
Limit
5.017.0
0Vcc-2.0
0Vcc-2.0
Unit
V
V
V
V
Unit
V
V
V
3/40

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ELECTRICAL CHARACTERISTICS(Unless otherwise specified Ta=25,Vcc=12V)
BD6709FS
Parameter
Circuit current
Hall input hysteresis
Output low voltage
Symbol
Limit
Min. Typ. Max.
Icc 3.0 6.0 9.0
VHYS
±5 ±10 ±15
VOL
- 0.2 0.3
Output high voltage
VOH
- 0.2 0.3
Lock detection ON time
Lock detection OFF time
FG output low voltage
FG output leak current
OSC low voltage
OSC high voltage
OSC frequency
Level amp gain
Level amp output low voltage
TON
0.30 0.50 0.70
TOFF 2.5 4.0 5.5
VFGL
-
- 0.3
IFGL
-
- 50
VOSCL 1.5 2.0 2.5
VOSCH 3.0 3.5 4.0
FOSC
- 25 * -
GLA 50 -
-
VLAOL
-
0.9 1.2
Level amp output high voltage
VLAOH
-
1.2 1.5
VREF voltage
CL-CS offset voltage
VREF 4.0 4.4 4.8
Vcofs
-
- 30
* This voltage is reference, not guarantee.
Unit
Conditions
Characteristics
mA Fig.1
mV Fig.2
V Io=200mA
Fig.3,4
Io=-200mA
V Voltage between output and Fig.5,6
Vcc
sec Fig.7
sec Fig.8
V IFG=5mA
Fig.9,10
μA VFG=15V
-
V Fig.11
V FIg.12
kHz COSC=470pF
-
dB -
V ILAOUT=1mA
-
ILAOUT=-1mA
V Voltage between output and
Vcc
-
V IVREF=-1mA
Fig.14,15
mV
BD6718FV
Parameter
Circuit current
Hall input hysteresis
H side output current
H side output leak current
Symbol
Limit
Min. Typ. Max.
Icc 4.0 8.0 12.0
VHYS
±5 ±10 ±15
IH 5 10 20
IHL - - 100
L side output high voltage
VLH - 0.2 0.35
L side output low voltage
VLL - 0.2 0.35
Lock detection ON time1
TON1 0.15 0.3
0.5
Lock detection OFF time1
Lock detection ON time2
Lock detection OFF time2
FG output low voltage
AL output low voltage
FG output leak current
TOFF1
TON2
TOFF2
VFGL
VALL
IFGL
1.5
0.15
3.0
-
-
-
3.0
0.3
6.0
0.3
0.3
-
5.0
0.5
10
0.4
0.4
50
AL output leak current
IALL
-
- 50
OSC low voltage
VOSCL 0.4 0.7 1.0
OSC high voltage
VOSCH 1.2 1.5 1.8
OSC frequency
FOSC
- 25 * -
VREF voltage
VREF 2.2 2.5 2.8
Hall bias voltage
VHB
1.2 1.5 1.8
CR current ability
ICR 3 - -
CR output low voltage
CR discharge time
VCR
TCR
- 0.3 0.5
9 18.5 28
* This voltage is reference, not guarantee.
Unit
mA
mV
mA
μA
V
V
sec
sec
sec
sec
V
V
μA
μA
V
V
kHz
V
V
mA
V
μsec
Conditions
Characteristics
Io=-10mA
Voltage between output and
Vcc
Io=10mA
SEL(6PIN)OPEN or H
SEL(6PIN)OPEN or H
SEL(6PIN)=L
SEL(6PIN)=L
IFG=5mA
IAL=5mA
VFG=15V
VAL=15V
COSC=470pF
IVREF=-1mA
VCR=1.5V
ICR=0.5mA
Fig.16
Fig.17
Fig.18
-
Fig.19
Fig.20
Fig.21
Fig.22
Fig.21
Fig.23
Fig.24
Fig.24
-
-
Fig.25
Fig.26
-
Fig.27
Fig.28
-
Fig.29
Fig.30
4/40

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BD6721FS
Parameter
Circuit current
Hall input hysteresis
Output voltage
Lock detection ON time
Lock detection OFF time
FG output low voltage
FG output leak current
AL output low voltage
AL output leak current
OSC low voltage
OSC high voltage
OSC charge current
OSC discharge current
Level amp gain
Level amp output low voltage
Level amp output high voltage
Output ON Duty 1
Output ON Duty 2
Output ON Duty 3
VREF voltage
Current limit voltage
VTH input bias current
VMIN input bias current
Symbol
Limit
Min. Typ. Max.
Icc 4.0 7.0 10.0
VHHYS ±5 ±10 ±15
VO - 0.6 0.9
TON
0.30 0.50 0.70
TOFF 3.0 5.0 7.0
VFGL
- 0.15 0.3
IFGL
-
- 50
VALL
- 0.15 0.3
IALL
-
- 50
VOSCL 0.8 1.0 1.2
VOSCH 2.3 2.5 2.7
ICOSC -50 -32 -26
IDOSC
26
32
50
GLA 50 -
-
VLAOL
-
0.2 0.3
VLAOH
-
1.6 2.0
DUTY1
85
90
95
DUTY2
45
50
55
DUTY3
5
10 15
VREF 2.8 3.0 3.2
VCL 290 310 330
IVTH
-
- 0.2
IVMIN
-
- 0.2
Unit
Conditions
Characteristics
mA Fig.31
mV Fig.32
V
Io=300mA
Upper and Lower total
sec
Fig.3336
Fig.37
sec Fig.38
V IFG=5mA
Fig.39,40
μA VFG=17V
Fig.41
V IAL=5mA
Fig.39,40
μA VAL=17V
Fig.41
V Fig.42
V Fig.43
μA Fig.44
μA Fig.44
dB -
V-
V
Voltage between LAOUT and
Vcc
VTH=VREF*0.383
% OUT1=Pull up 1kΩ
COSC=470pF
VTH=VREF*0.583
% OUT1=Pull up 1kΩ
COSC=470pF
VTH=VREF*0.783
% OUT1=Pull up 1kΩ
COSC=470pF
-
-
-
-
V IVREF=-2mA
Fig.45
mV Fig.46
μA Fig.47
μA Fig.48
5/40