Datasheet
DC Brushless Motor Drivers
Multifunction Three-phase Full-wave
Fan Motor Driver
BD63441AFU
●General
Description
BD63441AFU is a three-phase sensorless fan motor
driver that is suited for speed controllable fans.
It features a sensorless drive which doesn’t require a hall
device as a location detection sensor. Furthermore, there
is a PWM soft switched driving mechanism for silent
operation and low vibrations.
●Package(s)
SSOP-C20
W(Typ.) x D(Typ.) x H(Max.)
5.00mm x 6.40mm x 1.35mm
●Features
Pre-driver compatible for external Tr.
Sensorless drive and PWM soft switching
Under voltage lock out (UVLO)
Rotational speed control by DC input voltage
Current limit
Soft start
Lock protection and automatic restart
Quick start
Rotational speed pulse signal (FG) output
●Applications
For 12V fan motors for desktop PC, server, and general consumer equipment.
●Absolute
maximum ratings
Parameter
Supply voltage
Power dissipation
Operating temperature range
Storage temperature range
Output voltage
Output current
FG signal output voltage
FG signal output current
BEMF input voltage (U,V,W,COM)
Input voltage (MIN, TH, SS, OSC,TOSC,RNF)
Junction temperature
*1
*2
SSOP-C20
Symbol
Vcc
Pd
Topr
Tstg
Voh
Io
Vfg
Ifg
Vbemf
Vin
Tjmax
Limit
20
874.7
*1
-25 to +95
-55 to +150
20
10
*2
Unit
V
mW
°C
°C
V
mA
V
mA
V
V
°C
20
10
18
7
150
Derate by 7.0mW/°C when operating above Ta=25°C. (On 70.0mm×70.0mm×1.6mm glass epoxy board)
Pd should not be exceeded
●Recommended
operating conditions
Parameter
Operating supply voltage range
Operating input voltage range (TH)
Operating input voltage range (MIN)
Symbol
Vcc
V
th
V
MIN
Limit
5.5 to 16.0
0 to Vref
Voscl to Vref
Unit
V
V
V
○Product
structure：Silicon monolithic integrated circuit
.
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This
product has no designed protection against radioactive rays
1/19
TSZ02201-0H1H0B100780-1-2
27.Aug.2013 Rev.001
BD63441AFU
●Pin
Configuration
●Pin
Description
P/No.
1
2
3
4
5
6
7
8
9
10
11
12
T/Name
GND
REF
TH
MIN
OSC
SS
RNF
UL
UH
VL
VH
WL
WH
W
V
U
COM
Vcc
TOSC
FG
Function
Datasheet
(TOP VIEW)
GND
REF
TH
MIN
OSC
SS
RNF
UL
UH
VL
1
2
3
4
5
6
7
8
9
10
Fig.1 Pin configuration
20
19
18
17
16
15
14
13
12
11
FG
TOSC
Vcc
COM
U
V
W
WH
WL
VH
13
14
15
16
17
18
19
20
Ground terminal
Reference voltage terminal
Variable speed input terminal
Minimum rotating speed setting terminal
Oscillating capacitor connecting terminal
for output PWM operation
Soft start capacitor connecting terminal
Output current detecting terminal
Low side output terminal
(Motor output U)
High side output terminal
(Motor output U)
Low side output terminal
(Motor output V)
High side output terminal
(Motor output V)
Low side output terminal
(Motor output W)
High side output terminal
(Motor output W)
Motor output W detection terminal
Motor output V detection terminal
Motor output U detection terminal
Coil midpoint terminal
Power supply terminal
Oscillating capacitor connecting terminal
for start adjustment
Rotating speed pulse signal output terminal
●Block
Diagram
GND
LOCK
PROTECT
TSD
UVLO
SIGNAL
OUTPUT
1
20
FG
REF
2
VREF
PWM
COMP
QUICK
START
150°SOFT
SWITCH
TOSC
19
TOSC
TH
3
18
Vcc
MIN
4
PWM
COMP
BEMF
DETECT
17
COM
OSC
OSC
5
CONTROL
LOGIC
Vcl
SS
SOFT START &
CURRENT LIMIT
COMP
DET.
COMP
16
U
6
DETECT
LEVEL
15
V
RNF
7
14
W
UL
PRE DRIVER
8
13
WH
UH
9
12
WL
VL
1
0
11
VH
Fig.2 Block diagram
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
2/19
TSZ02201-0H1H0B100780-1-2
27.Aug.2013 Rev.001
BD63441AFU
●
Electrical characteristic (Unless otherwise specified Ta=25℃,Vcc=12V)
Parameter
Circuit current
<REF>
REF voltage
<TOSC>
TOSC high voltage
TOSC low voltage
TOSC Charge current
TOSC Discharge current
<TH, MIN>
TH input bias current
MIN input bias current
<OSC>
OSC high voltage
OSC low voltage
OSC charge current
OSC discharge current
<Internal current limit>
Current limit voltage
RNF input bias current
<Soft Start function>
SS charge current
<FG>
FG low voltage
FG leak current
<Lock protection>
Lock detect ON time
Lock detect OFF time
<Output>
Hi side output Hi voltage
Hi side output Lo voltage
Lo side output Hi voltage
Lo side output Lo voltage
Symbol
Icc
Vref
Vtosch
Vtoscl
Ictosc
Idtosc
Ith
Imin
Vosch
Voscl
Icosc
Idosc
Vcl
Irnf
Icss
Vfgl
Ifgl
Ton
Toff
Vohh
Vohl
Volh
Voll
Limit
Typ
7
5.00
2.5
1.05
–60
60
-
-
2.5
1.05
–30
30
150
-
–120
Datasheet
Min
4
4.65
2.3
0.80
–80
40
-
-
2.3
0.80
–40
20
120
-
–300
Max
10
5.35
2.7
1.20
–40
80
–1
–1
2.7
1.20
–20
40
180
–1
–50
Unit
mA
V
V
V
µA
µA
µA
µA
V
V
µA
µA
mV
µA
nA
V
µA
s
s
V
V
V
V
Conditions
Ref.
data
Fig.3
Fig.4, 5
Fig.6
Fig.6
Fig.7
Fig.7
Fig.8
Fig.9
Fig.10
Fig.10
Fig.11
Fig.11
Fig.12
Fig.13
Fig.14
Fig.15, 16
Fig.17
Fig.18
Fig.19
Iref=–2mA
Vtosc=1.8V
Vtosc=1.8V
Vth=1.5V
Vmin=1.5V
Vosc=1.8V
Vosc=1.8V
Vrnf=0V
Vss=0V
Ifg=5mA
Vfg=20V
-
-
0.3
3
Vcc-0.2
0.3
-
0.5
5
-
0.5
Vcc-0.5
0.4
10
0.8
8
Vcc
0.7
Vcc-0.3
0.3
Vcc-0.7
0
-
0.2
Iohh=0mA
Iohl=1mA
Iolh=–1mA
Ioll=0mA
Fig.20, 21
Fig.22, 23
Fig.24, 25
Fig.26, 27
About current items, inflow current to IC is denoted by a positive sign, and outflow current from IC is denoted by a negative sign.
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
3/19
TSZ02201-0H1H0B100780-1-2
27.Aug.2013 Rev.001
BD63441AFU
●Typical
Performance Curves (Reference data)
Datasheet
10
6
8
Circu it current : Icc[mA]
REF voltage : Vref[V]
6
95℃
25℃
-25℃
5
95℃
25℃
-25℃
4
4
3
2
Operating Voltage Range
0
0
5
10
15
Supply Voltage : Vc c[V]
20
Operating Voltage Range
2
0
5
10
15
Supply Voltage : Vcc[V]
20
Fig.3 Circuit current
Fig.4 Reference voltage
5.4
TOSC high/low voltage : Vtosc h/Vtosc l[V]
3.0
2.5
5.2
REF voltage : Vref[V]
95℃
25℃
-25℃
95℃
25℃
-25℃
2.0
5.0
Operating Voltage Range
1.5
4.8
1.0
95℃
25℃
-25℃
4.6
0
2
4
6
8
Output source current : Iref[mA]
10
0.5
0
5
10
15
Supply Voltage : Vcc[V]
20
Fig.5 Reference voltage current ability
(Vcc=12V)
Fig.6 TOSC high/low voltage
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
4/19
TSZ02201-0H1H0B100780-1-2
27.Aug.2013 Rev.001
BD63441AFU
●Typical
Performance Curves (Reference data)
Datasheet
TOSC charge/discharge current : Ictosc/Idtosc[uA]
10 0
0.2
TH input bias current : Ith[uA]
50
95℃
25℃
-25℃
0.0
95℃
25℃
-25℃
-0.2
Operating Voltage Range
0
Operating Voltage Range
-0.4
-5 0
-25℃
25℃
95℃
-0.6
-10 0
0
5
10
15
Supply Voltage : Vcc [V]
20
-0.8
0
5
10
15
Supply Voltage : Vcc[V]
20
Fig.7 TOSC Charge/Discharge current
Fig.8 TH input bias current
0.2
OS C high/low voltage: Vosc h/Voscl[V]
3.0
MIN input bias current : Imin[uA]
0.0
95℃
25℃
-25℃
Operating Voltage Range
2.5
95℃
25℃
-25℃
-0.2
2.0
Operating Voltage Range
-0.4
1.5
-0.6
1.0
95℃
25℃
-25℃
-0.8
0
5
10
15
Supply Voltage : Vcc[V]
20
0.5
0
5
10
15
Supply Voltage : Vc c[V]
20
Fig.9 MIN input bias current
Fig.10 OSC high/low voltage
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/19
TSZ02201-0H1H0B100780-1-2
27.Aug.2013 Rev.001
京公网安备 11010802033920号
EEWORLD
