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BD6369GUL-E2

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
Technical Note
10/16
BD6883GUL,BH6453GUL,BD6886GUL,BD6369GUL
www.rohm.com
2012.03 - Rev.
A
© 2012 ROHM Co., Ltd. All rights reserved.
●Function Explanation
1) Power-saving function (all series)
When the L voltage is applied the PS pin, the IC’s inside circuit stop, and when 0V applied, the circuit current became
0μA(Typ.), especially.
When the IC drive, serial input while the PS pin applied H voltage. (See the electrical characteristics; P.3, 4, 5/16)
2) Control Input Pin
（Ⅰ）IN pin (BD6883GUL, BH6453GUL)
The IN pin is used to program and control the motor drive modes.
(See the electrical characteristics; P3, 4/16, and the I/O Truth Table; P12/16)
（Ⅱ）INA, INB, SEL pins (BD6886GUL, BD6369GUL)
The INA and INB are used to program and control the motor drive modes.
When the L voltage is applied to the SEL pin, the I/O logic can be set to EN (Enable)/IN mode, and when the H voltage is applied
to the one, the I/O logic can be set to IN/IN mode. (See the electrical characteristics; P5/16, and the I/O Truth Table; P12/16)
3) H-bridge and Half-bridge on the output stage (ALL series)
Specify maximum current applied to the H-bridge and Half-bridge within the operating range, in consideration of power dissipation.
(See the Operating Conditions; P.2/16)
4) Drive system of Linear Constant-Voltage H-bridge (BD6883GUL, BD6886GUL, and BD6369GUL)
To set up the output H voltage, when the voltage input to the VLIM pin, the output H voltage is two times as high as the voltage.
（Ⅰ）BD6883GUL
･････①
（Ⅱ）BD6886GUL, BD6369GUL
･････②
For example, the output voltage is 2.0V±5%, if 1.0V is applied to the VLIM pin.
If the VLIM pin is shorted to the VM pin (or the same voltage level as the VM is applied), you can be used as a Full-ON Drive
H-bridge.
5) Drive system of Linear Constant-Current H-bridge (BH6453GUL)
To detect the output current and the output current settings
The BH6453GUL built in resistor for output current detect. The output current is kept constant by comparing it with the CLIM
voltage. In addition, impress a highly accurate voltage form the outside of IC to the CLIM terminal, when you do the output current
setting accuracy or more good.
･････③
If the CLIM pin applied 0.8V, Output current is 200mA±10%.
The output H voltage VOH [V] = 2.0×VLIM [V] (When VLIM [V] ＞ , Output H voltage is about VM voltage)
The output H voltage VOH [V] = 2.0×VLIM [V] (When VLIM [V] ＞ , Output H voltage is about VCC voltage)
Output current I
SINK
[A] =
CLIM [V]
2×2(Typ) [Ω]
VCC [V]
2
VM [V]
2
Technical Note
11/16
BD6883GUL,BH6453GUL,BD6886GUL,BD6369GUL
www.rohm.com
2012.03 - Rev.
A
© 2012 ROHM Co., Ltd. All rights reserved.
R
INA
//R
INB
=3.2[kΩ]
V
PWM
[V]= V
MAX
[V]× ON DUTY[%]
R
INA
=2.75R
INB
7) Setting of PWM signal input VLIM and CLIM terminals (all series)
It is also possible to compose filters outside the IC, change an input voltage for output voltage and output current setting terminals
such as VLIM and CLIM terminals by the DUTY control using an PWM signal, etc., and use them as set values for control.
In this case, however, ensure the smoothing of the signals, heeding the constant number of the low-pass filter as stated below.
A cutoff frequency F
C
(-3dB attenuation frequency) of the low-pass filter in Fig25 is calculated by the formula mentioned below.
･････④
Set the cutoff frequency F
C
at 1/100 or below of the PWM frequency F
PWM
.
For example, if the cutoff frequency F
C
is set at 1/100 of F
PWM
when the PWM frequency F
PWM
=50[kHz], according to the formula
above:
･････⑤
When C
IN
=0.1[μF], according to the formula above:
･････⑥
Where, an effective value of PWM signal as a DC current, according to crest values V
MAX
and ON DUTY [%]=
is as follows:
･････⑦
An actual voltage V
LIM
input to terminals that specify output current and voltages, such as VLIM and CLIM terminals
is as follows according to resistance potential division of R
INA
and R
INB
:
･････⑧
For example, when an PWM signal with crest values V
MAX
=3[V] and DUTY [%]=5[%] is input, a V
LIM
value according to the formula
above is:
･････⑨
（Ⅰ）BD6883GUL, BD6886GUL, and BD6369GUL
Where, to specify an output voltage VOH=2[V], a value VLIM=1.0[V] according to the formula in the previous page. And then,
according to the formula above, VLIM=1.0[V].
Therefore, R
INA
=0.5R
INB
･････
⑩
According to ⑥ and ⑩, R
INA
=4.8kΩ, R
INB
=9.6kΩ.
（Ⅱ）BH6453GUL
Where, to specify an output current I
SINK
=100[mA], the following formula is derived according to the formula in the previous page
③, CLIM=0.4[V], and according to the formula above ⑨:
･････⑪
According to ⑥ and ⑪: R
INA
=11.9kΩ, R
INB
=4.3kΩ
Fig.25 Example PWM signal input
Cutoff frequency F
C
[Hz] = [Hz]
1
2πC
IN
(R
INA
//R
INB
)
Cutoff frequency F
C
[Hz] =
1
2πC
IN
(R
INA
//R
INB
)
= ×F
PWM
= [Hz]
1
100
50×10
3
100
V
LIM
[V]= ×V
PWM
[V]
R
INB
R
INA
+R
INB
ON time
ON time+ OFF time
C
IN
R
INA
R
INB
Output voltage / Constant current voltage terminals
F
PWM
V
PWM
V
MAX
V
LIM
VLIM / CLIM
V
LIM
[V]= × 3[V]× 50[%]
R
INB
R
INA
+R
INB
VLIM=1.0[V]=V
LIM
= ×3[V]×50[%]
R
INB
R
INA
+R
INB
CLIM=0.4[V]=V
LIM
= ×3[V]×50[%]
R
INB
R
INA
+R
INB
Technical Note
12/16
BD6883GUL,BH6453GUL,BD6886GUL,BD6369GUL
www.rohm.com
2012.03 - Rev.
A
© 2012 ROHM Co., Ltd. All rights reserved.
●I/O Truth Table
BD6883GUL I/O Truth Table
MODE
INPUT OUTPUT
OUTPUT MODE
PS IN OUT
- H
L L Sink
H H Source
- L X Z
※
7
Standby
L: Low, H: High, X: Don’t care, Z: Hi impedance
Sink is a direction of current flowing into the driver, and Source is a direction of current flowing out the driver.
When it is sink, which drive FULL ON.
※
7
Z at the Constant-Voltage driver output L voltage for connect feedback resistance (20kΩ Typ.) for output H voltage setting between OUT pin and GND.
But output Power MOS is OFF condition.
BH6453GUL I/O Truth Table
MODE
INPUT OUTPUT
OUTPUT MODE
PS IN OUT
- H
H L Sink
L H Source
- L X Z Standby
L: Low, H: High, X: Don’t care, Z: Hi impedance
Sink is a direction of current flowing into the driver, and Source is a direction of current flowing out the driver.
When it is source, which drive FULL ON.
BD6886GUL, BD6369GUL I/O Truth Table
MODE
INPUT OUTPUT
OUTPUT MODE
PS SEL INA INB OUTA OUTB
EN/IN
H
L
L X Z
※
7
Z
※
7
Standby
H L H L Forward rotation
H H L H Reverse rotation
IN/IN H
L L L L Brake
L H L H Reverse rotation
H L H L Forward rotation
H H Z
※
8
Z
※
8
Standby
- L X X X Z
※
8
Z
※
8
Standby
L: Low, H: High, X: Don’t care, Z: Hi impedance
At forward rotation, current flows from OUTA to OUTB. At reverse rotation, current flows from OUTB to OUTA.
※
8
Z at the Constant-Voltage driver output L voltage for connect feedback resistance (20kΩ Typ.) for output H voltage setting between OUT pin and GND.
But output Power MOS is OFF condition.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

BD6369GUL-E2

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Motor / Motion / Ignition Controllers & Drivers PNP+PNP Driver Transistor
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