Datasheet
36V
1ch DC Brush Motor Drivers
BD62105AFVM
General Description
BD62105AFVM is a built-in 1 channel H-bridge motor
driver for DC brush motors. This driver can facilitate low
power consumption by direct PWM. There are built in
protection circuits in this IC. Each protection circuit
operation, which contributes to set high reliability.
Key Specifications
Power Supply Voltage Range:
Rated Output Current:
Rated Output Current (Peak):
Operating Temperature Range:
Output ON-Resistance:
(Total of upper and lower resistors)
8 to 28 V
0.5 A
1.0 A
-25 to +85°C
1.8 Ω (Typ)
Features
Single Power Supply Input (rated voltage of 36V)
Rated Output Current (peak):0.5A(1.0A)
Low ON-Resistance DMOS Output
Forward, Reverse, Brake, Open
Power Save Function
External PWM Control
Driver for DC Brush Motor
Built-in logic input pull-down resistor
Cross-conduction Prevention Circuit
Thermal Shutdown Circuit (TSD)
Over-current Protection Circuit (OCP)
Under Voltage Lock out Circuit (UVLO)
Over Voltage Lock out Circuit (OVLO)
Ghost Supply Prevention (protects against malfunction
when power supply is disconnected)
Adjacent Pins Short Protection
Inverted Mounting Protection
MSOP8 package
Package
MSOP8
W(Typ) x D(Typ)x H(Max)
2.90mm x 4.00mm x 0.90mm
Figure 1.MSOP8
Typical Application Circuit
Application
Plain Paper Copier (PPC), Multi-function Printer, Laser
Printer, Inkjet Printer, Photo Printer, FAX, Mini Printer and
etc.
VCC
OUT1
IN1
IN2
TEST
OUT2
GND
Figure 2. Typical Application Circuit
○Product
structure：silicon monolithic integrated circuit
○This
product has no designed protection against radioactive rays.
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BD62105AFVM
Pin Configuration
Block Diagram
GND
OUT1
VCC
GND
1
2
3
4
8
7
6
5
OUT2
3
Regulator
TEST
IN2
IN1
TSD
UVLO
OCP
OVLO
3
Control logic
5
6
7
Forward
Reverse
BRAKE
Open
Predriver
2
8
1,4
Figure 3. Pin Configuration
Figure 4. Block Diagram
Pin Descriptions
Pin No.
1
2
3
4
Pin Name
GND
OUT1
VCC
GND
Function
Ground terminal
H bridge output terminal
Power supply terminal
Ground terminal
Pin No.
5
6
7
8
Pin name
IN1
IN2
TEST
OUT2
Function
H bridge control terminal
H bridge control terminal
Test terminal
(Connected to GND)
H bridge output terminal
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BD62105AFVM
Absolute Maximum Ratings
(Ta=25°C)
Parameter
Supply Voltage
Power Dissipation
Input Voltage for Control Pin
Output Current
Output Current (peak)
Operating Temperature Range
Storage Temperature Range
Maximum Junction temperature
Symbol
V
CC
Pd
V
IN
I
OUT
I
OUTPEAK
Topr
Tstg
T
jmax
Rating
-0.2 to +36.0
0.59
0.5
1.0
*1
Unit
V
W
V
A
A
°C
°C
°C
-0.2 to +5.5
*2
*3
-25 to +85
-55 to +150
+150
*1
70mm×70mm×1.6mm glass epoxy board. Derate by4.7mW/°C when operating above Ta=25°C.
*2
Do not, however exceed Pd and Tjmax=150°C.
*3
Pulse width tw ≤1ms, duty 20ms
Caution 1:
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.
Caution 2:
Should by any chance the maximum junction temperature rating be exceeded the rise in temperature of the chip may result in deterioration of the
properties of the chip. In case of exceeding this absolute maximum rating, design a PCB boards with thermal resistance taken into consideration
by increasing board size and copper area so as not to exceed the maximum junction temperature rating.
Recommended Operating Conditions
(Ta= -25 to +85°C)
Parameter
Supply Voltage
Maximum Output Current (Continuous)
*4
Do not, however exceed Pd, and Tjmax=150°C.
Symbol
V
CC
I
OUT
Range
8 to 28
0.3
*4
Unit
V
A
Electrical Characteristics
(Unless otherwise specified Ta=25°C, V
CC
=24V)
Parameter
【Whole】
Circuit Current at Standby
Circuit Current
【Control
Input】
H Level Input Voltage
L Level Input Voltage
H Level Input Current
L Level Input Current
【Output
(OUT1, OUT2)】
Output ON-Resistance
Output Leak Current
R
ON
I
LEAK
-
-
1.80
-
2.30
10
Ω
µA
I
OUT
=±0.3A
(Sum of upper and lower)
V
INH
V
INL
I
INH
I
INL
2.0
-
35
-10
-
-
50
0
-
0.8
100
-
V
V
µA
µA
V
IN
=5V
V
IN
=0V
I
CCST
I
CC
-
-
-
1.4
10
2.5
µA
mA
IN1=L, IN2=L
IN1=H or IN2=H
Symbol
Limit
Min
Typ
Max
Unit
Conditions
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BD62105AFVM
Application Information
Points to Notice for Terminal Description and PCB Layout
○
IN1, IN2/ H Bridge Control Terminal
It decides output logic for H bridge.
Input
Output
IN1
IN2
OUT1
OUT2
L
L
OPEN
OPEN
H
L
H
L
L
H
L
H
H
H
L
L
State
STOP
FORWARD
REVERSE
BRAKE
○
TEST/ Terminal for Testing
This is the terminal used at the time of distribution test. Please connect to GND. Please be careful because there is a
possibility of malfunction if it is not connected to GND.
○
VCC/ Power Supply Terminal
Motor’s drive current is flowing in it, so please connect it in such a way that the wire is thick & short and has low
impedance. VCC voltage may have great fluctuation, so please connect the bypass capacitor (100uF to 470uF) as
close as possible to the terminal. Adjust in such a way that the VCC voltage is stable. Please increase the
capacitance if needed, especially when large current or motors that have great back electromotive force are used. In
addition, to reduce the power supply’s impedance in wide frequency bandwidth, parallel connection of multi-layered
ceramic capacitor (0.01µF to 0.1µF) is recommended. Extreme care must be observed to make sure that the VCC
voltage does not exceed the rating even for a moment. Moreover, there is a built-in clamp component in the output
terminal to prevent electrostatic destruction. If sudden pulse or surge voltage of more than the maximum absolute
rating is applied, the clamp component operates which can result to destruction. Please be sure to not exceed the
maximum absolute rating. It is effective to mount a Zener diode with maximum absolute rating. Also, diode is inserted
between VCC terminal and GND terminal to prevent electrostatic destruction. If reverse voltage is applied between
VCC terminal and GND terminal, there is a danger of IC destruction so please be careful.
○
GND/ Ground Terminal
In order to reduce the noise caused by switching current and to stabilize the internal reference voltage of IC, please
connect it in such a way that the wiring impedance from this terminal is made as low as possible to achieve the
lowest electrical potential no matter what operating state it may be.
○
OUT1,OUT2/ H Bridge Output Terminal
Motor’s drive current is flowing in it, so please connect it in such a way that the wire is thick & short and has low
impedance. It is also effective to add a Schottky diode if output has great positive or negative fluctuation when large
current is applied. For example, a counter electromotive voltage etc. is great. Moreover, there is a built-in clamp
component in the output terminal to prevent electrostatic destruction. If sudden pulse or surge voltage of more than
the maximum absolute rating is applied, the clamp component operates which can result to destruction. Please be
sure to not exceed the maximum absolute rating.
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BD62105AFVM
Protection Circuits
○
Thermal Shutdown (TSD)
This IC has a built-in Thermal Shutdown circuit for thermal protection. When the IC’s chip temperature rises above
175°C (Typ), the motor output becomes OPEN. Also, when the temperature returns to under 150°C (Typ), it
automatically returns to normal operation. However, even when TSD is in operation, if heat is continued to be applied
externally, heat overdrive can lead to destruction.
○
Over-Current Protection (OCP)
This IC has a built in Over-Current Protection circuit as a provision against destruction when the motor outputs are
shorted to each other or VCC-motor output or motor output-GND is shorted. This circuit latches the motor output to
OPEN condition when the regulated threshold current flows for 4μs (Typ). It returns with power reactivation. The
over-current protection circuit aims to prevent the destruction of the IC only from abnormal situations such as when
motor output is shorted and it is not meant to be used as protection or security for the device. Therefore, the device
should not be designed to make use of the function of this circuit. After OCP operation, if abnormal situations
continues and returned by power reactivation or reset of the PS terminal happens repeatedly, then OCP operates
constantly. The IC may generate heat or otherwise deteriorate. When the L value of the wiring is great due to the long
wiring and the over-current flows, the output terminal voltage increases and the absolute maximum values may be
exceeded. As a result, there is a possibility of destruction. Also, when a current flows, which is over the output current
rating and under the OCP detection current, the IC can heat up to over Tjmax=150°C. This can deteriorate the IC.
Therefore, current which exceeds the output rating should not be applied.
○
Under Voltage Lock Out (UVLO)
This IC has a built-in Under Voltage Lock Out function to prevent false operation such as IC output during power
supply under voltage. When the applied voltage to the VCC terminal goes under 5V (Typ), the motor output is set to
OPEN. This switching voltage has a 1V (Typ) hysteresis to prevent false operation by noise etc.
○
Over Voltage Lock Out (OVLO)
This IC has a built-in Over Voltage Lock Out function to protect the IC output and the motor during power supply over
voltage. When the applied voltage to the VCC terminal goes over 32V (Typ), the motor output is set to OPEN. This
switching voltage has a 1V (Typ) hysteresis and a 4μs (Typ) mask time to prevent false operation by noise etc.
Although this over voltage locked out circuit is built-in, there is a possibility of destruction if the absolute maximum
value for power supply voltage is exceeded. Therefore, the absolute maximum value should not be exceeded.
○
Ghost Supply Prevention (protects against malfunction when power supply is disconnected)
If a control signal (IN1, IN2) is applied when there is no power supplied to the IC, there is a function which prevents
false operation by voltage applied via the electrostatic destruction prevention diode from the control input terminal to
the VCC, to this IC or to another IC’s power supply. Therefore, there is no malfunction in the circuit even when
voltage is supplied to these input terminals while there is no power supply.
○
Operation Under Strong Electromagnetic Field
Operating the IC in the presence of a strong electromagnetic field may cause the IC to malfunction.
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