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BA6219BFP-YE2

P1-P3P4-P6P7-P9P10-P11
Technical Note
4/10
www.rohm.com
2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
BA6219BFP-Y,BA6222
●Block diagram and pin configuration
BA6219BFP-Y
Fig.13 BA6219BFP-Y
Fig.14 HSOP25
BA6222
Fig.15 BA6222
Fig.16 HSIP10
Table 1 BA6219BFP-Y
Pin Name Function
2 CD1 Cross conduction control pin
4 VR Reference voltage setting pin
6 IN1 Control input (forward)
7 GND GND
8 IN2 Control input (reverse)
10 VCC1 Power supply (small signal)
11 VCC2 Power supply (driver stage)
13 CD2 Cross conduction control pin
15 OUT2 Driver output
19 GND GND
20 GND GND
24 OUT1 Driver output
FIN GND GND
Note: All pins not described above are NC pins.
Table 2 BA6222
Pin Name
Function
1 GND GND
2 OUT1 Driver output
3 CD1 Cross conduction control pin
4 VR Reference voltage setting pin
5 IN1 Control input (forward)
6 IN2 Control input (reverse)
7 VCC1 Power supply (small signal)
8 VCC2 Power supply (driver stage)
9 CD2 Cross conduction control pin
10 OUT2 Driver output
FIN GND GND
10
11
2 13
6
8
CTRL
IN1
IN2
VCC2
VCC1
CD2 CD1
19
GND
TSD
24
15
OUT2
OUT1
4
VR
FIN
M
20
GND
7
GND
C1
R1
C2 C3
ZD
C4
NC
CD1
GND
NC
V
R
NC
IN1
GND
IN2
NC
VCC1
VCC2
NC
CD2
NC
OUT1
GND
NC
NC
NC
GND
GND
NC
NC
NC
OUT2
NC
7
8
3 9
5
6
CTRL
IN1
IN2
VCC2
VCC1
CD2 CD1
1
GND
TSD
2
10
OUT2
OUT1
4
VR
FIN
M
C1
R1
C2 C3
ZD
C4
C5
x4
x4
GND
OUT1
CD1
V
R
IN1
IN2
VCC1
VCC2
CD2
OUT2
Technical Note
5/10
www.rohm.com
2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
BA6219BFP-Y,BA6222
●External application components
1) Resistor for the current limitation, R1
This is a current limiting resistor for collector loss reduction and at the time of short-circuited output. It depends on the
power supply voltage used, etc., but choose resistance of about 5 to 10Ω. In addition, set resistance with utmost care
to voltage drop caused by inrush current that flows when the motor is started.
2) Zener diode for the output high voltage setting, ZD
This is the zener diode used when output high voltage (VR pin voltage) is set.
BA6219BFP-Y: Output high voltage ≈ zener voltage
BA6222: Output high voltage ≈ fourfold zener voltage
3) Stabilization capacitor for the power supply line, C1
Please connect the capacitor of 1μF to 100μF for the stabilization of the power supply line, and confirm the motor
operation.
4) Capacitors for the cross conduction control of output transistors, C2 and C3
Simultaneous ON is prevented by delaying base potential buildup of transistors which enter output high state. Set the
capacitors from 0.01μF to 1μF and make sure inrush current caused by simultaneous output ON does not flow when
output mode is switched.
5) Phase compensating capacitor, C4
Noise is generated in output pins or oscillation results in accord with the set mounting state such as power supply
circuit, motor characteristics, PCB pattern artwork, etc. As noise oscillation measures, connect 0.01μF to 0.1μF
capacitors.
6) Phase compensating capacitor, C5 (BA6222 only)
The gain about fourfold VR pin voltage in output high voltage is set, and the output oscillates easily. Please connect the
capacitor of 3300pF to 0.1µF as an oscillation prevention measures when the oscillation is seen in the output voltage.
●Functional descriptions
1) Operation modes
Table 3 Logic table
IN1 IN2 OUT1 OUT2 Operation
L L OPEN* OPEN* Stop (idling)
H L H L Forward (OUT1 > OUT2)
L H L H Reverse (OUT1 < OUT2)
H H L L Brake (stop)
*OPEN is the off state of all output transistors.
Please note that this is the state of the connected diodes, which differs from that of the mechanical relay.
a) Stand-by mode
In stand-by mode, all output power transistors are turned off, and the motor output goes to high impedance.
b) Forward mode
This operating mode is defined as the forward rotation of the motor when the OUT1 pin is high and OUT2 pin is
low. When the motor is connected between the OUT1 and OUT2 pins, the current flows from OUT1 to OUT2.
c) Reverse mode
This operating mode is defined as the reverse rotation of the motor when the OUT1 pin is low and OUT2 pin is high.
When the motor is connected between the OUT1 and OUT2 pins, the current flows from OUT2 to OUT1.
d) Brake mode
This operating mode is used to quickly stop the motor (short circuit brake).
Technical Note
6/10
www.rohm.com
2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
BA6219BFP-Y,BA6222
2) Output high voltage setting
This function optionally sets output voltage by the output high voltage setting pin and controls the motor rotating speed.
However, when the output high voltage is set to a low level, consumption at IC increases. Carry out thermal design with
sufficient margin incorporated with the power dissipation (Pd) under the actual application condition taken into account.
a) BA6219BFP-Y
The circuit diagram associated with the output high voltage setting
VR pin is as per shown on the right. The maximum output voltage
V
OMAX
is expressed by:
V
OMAX
= VCC1 - ( V
SAT(Q1)
+ V
F(Q2)
+ V
F(Q3)
+ V
F(Q4)
)
In addition, the relation of VR voltage to output voltage at V
OMAX
or lower is
expressed by:
V
OH
= VR + ( V
F(Q5)
+ V
F(Q6)
+ V
F(Q7)
) - ( V
F(Q2)
+ V
F(Q3)
+ V
F(Q4)
)
V
OH
= VR + ΔV
F
≈ VR
ΔV
F
depends on the output current but is nearly V
OH
=VR. (Reference values; V
SAT
≈ 0.25V, V
F
≈ 0.75V)
b) BA6222
As the relationship between the output high voltage setting pin VR
voltage and output high voltage V
OH
is expressed by:
V
OH
≈ 4 x VR + V
OFS
In such event, V
OFS
means the offset voltage, which varies in accord with
output current and chip temperature.
The VR voltage region can be classified into three categories in accord
with the output state:
(A) Output high voltage 0V offset region
(B) Fourfold gain region
(C) Output voltage saturated region
Using this function with the VR pin connected to a load which has output impedance of several hundred ohms may
result in oscillation. In such event, connect a capacitor of 3300pF or higher to about 0.1μF across VR and GND
and make sure that the motor is free of oscillation.
c) Power supply voltage range of VR voltage
When output voltage control pin (VR) is used:
VR < VCC1 - ( V
SAT(Q1)
+ V
F(Q5)
+ V
F(Q6)
+ V
F(Q7)
)
VR ≈ VCC1 - 2.5V
VR < VCC2 - ( V
SAT(Q3)
- V
F(Q3)
- V
F(Q2)
) - ( V
F(Q5)
+ V
F(Q6)
+ V
F(Q7)
)
VR ≈ VCC2 - 1V
The output voltage control function does not operate in the region
outside this range. In addition, when the VR pin is not used, use
by shorting VR to VCC1.
3) Switching of rotating direction (FWD/REV)
When the rotating direction is changed over by the motor rotating condition, switch the direction after the motor is
temporarily brought to the BRAKE condition or OPEN condition. It is recommended to keep the relevant conditions as
follows:
via BRAKE: Longer than braking time*.
(* the time required for the output L terminal to achieve potential below GND when brake is activated.)
via OPEN: The time longer than 1 ms is recommended.
OUT
VCC2
VR
VCC1
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Fig. 17
VOH
VR
BA6219BFP-Y
BA6222
VCC1 - 3VF - VSAT
(A) (B) (C)
Fig. 18
VOH
VR
Control range Saturation range
Fig. 19
P1-P3P4-P6P7-P9P10-P11

BA6219BFP-YE2

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IC MOTOR DRIVER 8V-18V 25HSOP
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