High efficiency switching-type motor driver
BP5801
The BP5801 is an output-variable type DC motor driver module. This module can change the output voltage for
driving the DC motor by inputting PWM signal or DC voltage into the control terminal. The power conversion
efficiency is high, and power saving of the application can be realized, since the input voltage can be changed
into the specified output voltage by the switching system. Further, this module can be used as the output-variable
type DC / DC converter.
Applications
Refrigerator,The rotation-control type DC motor driver and the output-variable type DC / DC converter
Features
1) Electrical power loss is small even when there is a difference between the input voltage and motor driving
voltage, since electrical power conversion efficiency is high (90% Typ.) as the switching system is employed
for changing the voltage.
2) Motor driving voltage can be set to any optional value by the control signal.
3) The control signal corresponds with both PWM signal and DC voltage.
4) The control terminal is easy to be designed, as it is only one-terminal type.
5) This can be used as the output-variable type DC / DC converter as well.
6) Space-saving package of SIP.
Absolute maximum ratings (Ta=25°C)
Parameter
Symbol
V
IN
I
O
V
CTL
Topr
Tstg
Limits
20
0.4 (1.3 at peak)
6
−10 ∼ +60
−25 ∼ +80
Unit
V
A
V
°C
°C
Remarks
−
Power supply voltage
Output current
CTL input voltage
∗1
3pin
−
−
Operating temperature range
Storage temperature range
∗1
Derating is necessary. Based on the derating curve.
Recommended operating conditions (Ta=25°C)
Parameter
Symbol
V
IN
Min.
12
Typ.
13
Max.
15
Unit
V
Power supply voltage
1/6
BP5801
Block diagram
9
1
DRIVE CIRCUIT
HIGH SPEED
PWM CONTROL CIRCUIT
3
VOLTAGE CONVERSION
CIRCUIT
5
6
Pin descriptions
Pin No.
1
2
3
5,6
7,8
9
Pin name
OUT
TP
CTL
GND
TP
V
IN
Function
Output pin for motor drive : connect a low impedance capacitor with a recommended capacit-
ance of 470µF / 35V.
Test pin ; use this internally connected pin in OPEN mode.
Output voltage control pin ; PWM signal or DC signal is inputted. The output voltage can be
changed either by changing the duty of PWM signal or by changing the DC voltage value.
Ground pin
Test pin ; use this internally connected pin in OPEN mode.
Input pin ; connect a low impedance capacitor with a recommended capacitance of
100µF / 35V.
Electrical characteristics
Parameter
Output voltage
Ripple noise voltage
Efficiency
CTL frequency
CTL input resistance
Standby current
Circuit current at no signal
∗1
Spike
(unless otherwise noted, Ta=25°C, V
IN
=13V, Io=0.4A, f
CTL
=50Hz)
Symbol
V
O
½
η
f
CTL
R
CTL
I
IN
I
IN
Min.
11
5
−
80
50
200
−
−
Typ.
12
6
−
90
−
−
4
4
Max.
13
7
50
−
−
−
−
−
Unit
V
V
mV
PP
%
Hz
kΩ
mA
mA
Pin 3
Pin 3
=
GND
Pin 3
=
GND
D
CTL
=
50%
D
CTL
=
100%
D
CTL
=
100%
Conditions
D
CTL
=
100% (5V fixed)
∗1
noise is not included.
2/6
BP5801
Measurement circuit
BP5801
1
2
3
5
6
7
8
9
A
+
I
O
C2
V V
O
CTL
See
Fig.2
V
IN
V
+
C1
A I
IN
V
IN
C1 : 100µF / 35V (Low impedance)
C2 : 470µF / 35V (Low impedance)
Fig.1
Output voltage control signal (Pin 3)
5.00V
1
f
CTL
=
−
T
0V
T
H
D
CTL
=
−
×100
(%)
T
(Duty of control signal)
T
H
T
Note) Output voltage is different by the level of "H" and "L"
T
L
Fig.2
Circuit operations
(1) Description
BP5801 is a DC motor driver that can establish any output voltage by inputting PWM signal and DC voltage
into the control pin (3pin).Electrical power loss is small even when there is a difference between the input
voltage and output voltage, since changing from the input voltage into the specified output voltage can be
made by the switching system. This module is most suitable in case that the number of rotation of the
motor is controlled by changing the driving voltage, or in case that the motor of a lower specified voltage
than 13V is driven by the electrical power supply of 13V.
(2) Control signals
1) PWM signal
The output voltage will be controlled by that duty. The larger the duty is, the higher the output voltage
will be. It is necessary to be attentive, because the output voltage value changes depending on the H-
level and L-level values of PWM signal as well, at this time.
2) DC voltage
The output voltage will be controlled by PC voltage value. The higher the voltage, the higher the output
voltage will be.
3/6
BP5801
Application example
BP5801
1
2
3
5
6
7
8
9
Be sure to use
fuse for safety
13V
+
+
DC MOTOR
470µF
100µF
Control signal
Fig.3
Operation notes
(1) The output current should be reduced according to an increase in the output voltage or ambient
temperature. Use the module within the derating curve range.
(2) The protection circuit for output current is not incorporated. Be sure to take safety measures such as
fusing if short-circuit loads or overcurrent is probable.
(3) External capacitor
Since the switching system is employed for the purpose of changing the voltage, ripple current flows to the
capacitor to be added to pins 1, 9. Select the product of which allowable ripple current is more than this
value.
Electrical characteristic curves
1.5
Ambient temperature :
−
10˚C
∼
60˚C
15
15
for PWM
OUTPUT VOLTAGE : V
O
(V)
OUTPUT VOLTAGE : V
O
(V)
for DC voltage
OUTPUT CURRENT : I
O
(A)
1
10
10
0.5
Operating : 2sec.
Standby : 2min.
5
5.00V
0V
f
CTL
=50Hz
0
5
Continuous
operation
0
0
5
10
15
OUTPUT VOLTAGE : (V)
0
0
50
DUTY : D
CTL
(%)
100
0
1
2
3
4
5
DC VOLTAGE : V
CTL
(V)
Fig.4 Derating curve
Fig.5 Output voltage vs. Duty
Fig.6 Output voltage vs. DC voltage
4/6
BP5801
External dimensions (Units : mm)
28.2Max.
1pin SIDE MARK
21.5Max.
Marked
side
11.2Max.
Marked side
4±1.0
1
2
3
5
0.5±0.1
1.3±0.2
6 7
8
9
0.25±0.05
P= 2.54±0.2
7.8Max.
5.8Max.
2.54×8=20.32
3.4Max.
SIP9
5/6
电源技术
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
