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PDF BD61250MUV Data sheet ( Hoja de datos )
| Número de pieza | BD61250MUV | |
| Descripción | Multifunction Single-phase Full-wave Fan Motor Driver | |
| Fabricantes | ROHM Semiconductor | |
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Datasheet
DC Brushless Fan Motor Driver
Multifunction Single-phase Full-wave
Fan Motor Driver
BD61250MUV
General Description
BD61250MUV is pre-driver IC to drive single phase H bridge output composed of external MOS FET.
The power supply input terminal and the drive output have voltage rating of 40V, so it can be used in a 24V power supply
without using voltage drop down circuit.
Features
Pre driver for external power MOS FET
Speed controllable by PWM / DC voltage
Minimum output duty limit
Input / output duty slope adjustment
Silent drive by the PWM soft switching
Lead angle setting
Soft start
Standby mode
Current limit
Lock protection and automatic restart
Rotation speed pulse signal(FG), Lock alarm
signal(AL) selectable
Drive PWM frequency selectable (50kHz/25kHz)
Application
General consumer equipment of Desktop PC, Server,
etc.
Office equipment, Copier, FAX, Laser Printer, etc.
Package
VQFN024V4040
W (Typ) x D (Typ) x H (Max)
4.00mm x 4.00mm x 1.00mm
VQFN024V4040
Absolute Maximum Ratings
Parameter
Symbol
Rating
Unit
Supply Voltage
Power Dissipation
VCC 40 V
Pd
0.83(Note 1)
W
Operating Temperature
Topr -40 to +105 °C
Storage Temperature
Tstr
-55 to +150
°C
Junction Temperature
Tjmax
+150
°C
High Side Output Voltage
VOH VCC-7 to VCC V
Low Side Output Voltage
VOL 0 to 7 V
Output Current
IOMAX 10 mA
Signal Output Voltage
VSIG 40 V
Signal Output Current
ISIG 10 mA
Reference Voltage (REF) Output Current
IREF 10 mA
Input Voltage1 (PWMIN, CS, FSEL, SSEL, STBEN)
VIN1
5.3
V
Input Voltage2 (HP, HM, ADC input terminal)
VIN2
3.3
V
(Note 1) Derate by 6.64mW/°C when operating above Ta=25°C. (Mounted on 114.3mm×76.2mm×1.57mm 1layer board)
Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over
the absolute maximum ratings.
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays
1/26
TSZ02201-0H1H0B101660-1-2
5.Jul.2016 Rev.002
1 page  
BD61250MUV
Datasheet
Typical Performance Curves (Reference Data)
6
5
105°C
4
3
25°C
–40°C
2
1
Operating Supply Voltage Range
0
0 10 20 30 40
Supply Voltage: VCC[V]
Figure 1. Circuit Current vs Supply Voltage
6
5
4
3
Operating Supply Voltage Range
2
105°C
25°C
1
–40°C
0
0 10 20 30 40
Supply Voltage: VCC[V]
Figure 2. Standby Current vs Supply Voltage
30
20
105°C
25°C
10
–40°C
Operating Supply Voltage Range
0
–40°C
-10
25°C
105°C
-20
-30
0
10 20 30
Supply Voltage: VCC[V]
40
Figure 3. Hall Input Hysteresis vs Supply Voltage
20
15
10
5
0
-5
-10
0
–40°C
25°C
105°C
Operating Supply Voltage Range
10 20 30
Supply Voltage: VCC[V]
40
Figure 4. PWM Input Current vs Supply Voltage
(VPWM=5V)
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/26
TSZ02201-0H1H0B101660-1-2
5.Jul.2016 Rev.002
5 Page 
BD61250MUV
Datasheet
Functional Descriptions
1. Speed Control
There are 2 ways to control the speed of motor.
(1) PWM Control (Input PWM pulse into PWM terminal)
(2) Voltage Control (Input DC voltage into MIN terminal)
The resolution of (1) input duty, (2) input voltage are 8bit (256steps) both. Output PWM resolution is 8bit, output PWM
frequency is 50kHz (FSEL=open) or 25kHz (FSEL=GND). When computed duty is less than 2.3%, a driving signal is
not output.
(1) PWM Control
Output PWM duty is changed depending on input PWM duty from PWMIN terminal, and rotational speed is
controlled. Please refer to input voltage 1(P.1) and recommended operating conditions (P.2) for the signal input
condition from a PWMIN terminal. In the case of PWMIN terminal is open, internal voltage (about 5V) is applied to
PWMIN terminal, and output is driven in 100%. Because the PWM signal is filtered inside the IC and is signal
processed, the PWM frequency of the drive output is not same to the input PWM frequency.
PWM
5V
200kΩ(Typ)
PWMIN
I/O
REF
REFE-
RENCE
MIN
Figure 17. PWM input and minimum
output duty setting
PWM
(Internal signal)
A1H
A1L
A2H
A2L
OUT1
OUT2
Motor output ON
High
Low
High
Low
High
Low
High
Low
High
Low
: High impedance
High
Low
Figure 18. Output PWM operation timing chart
○Minimum Output Duty Setting (MIN)
The voltage which divided REF terminal voltage by resistance like Figure 17 is input into MIN terminal, and
minimum output duty is set. When input duty from a PWM terminal is lower than minimum output duty which is
set by MIN terminal, the output duty does not fall to lower than minimum output duty.
The MIN terminal is the input terminal of the analog-digital converter to have an input voltage range of the REF
voltage, and the resolution is 256 steps (0.39% per step). When minimum output duty is not set, please perform
resistance pull-down of MIN terminal.
Minimum output duty
(256 steps)
100
100
25
0 0.75
MIN input voltage [V]
VREF
Figure 19. Relation of MIN input voltage and output
duty
Minimum duty
0 Input PWM duty [%] 100
Figure 20. Relation of input and output duty
when minimum duty is set
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/26
TSZ02201-0H1H0B101660-1-2
5.Jul.2016 Rev.002
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet BD61250MUV.PDF ] | |
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