BD6223 데이터 시트보기 (PDF) - ROHM Semiconductor
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BD6223 Datasheet PDF : 22 Pages
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BD622xxx Series
Datasheet
●Functional Descriptions
1) Operation modes
Table 5 Logic table
FIN
RIN VREF OUT1 OUT2
Operation
a
L
L
X
Hi-Z* Hi-Z* Stand-by (idling)
b
H
L
VCC
H
L
Forward (OUT1 > OUT2)
c
L
H
VCC
L
H Reverse (OUT1 < OUT2)
d
H
H
X
L
L
Brake (stop)
__________
e PWM
L
VCC
H
PWM Forward (PWM control mode A)
__________
f
L
PWM VCC PWM
H Reverse (PWM control mode A)
__________
g
H
PWM VCC PWM
L
Forward (PWM control mode B)
h PWM
H
VCC
__________
L
PWM Reverse (PWM control mode B)
i
H
__________
L
Option
H
PWM Forward (VREF control)
j
L
__________
H
Option PWM
H Reverse (VREF control)
* Hi-Z : all output transistors are off. Please note that this is the state of the connected diodes,
which differs from that of the mechanical relay.
X : Don’t care
a) Stand-by mode
Stand-by operates independently with the VREF pin voltage. In stand-by mode, all internal circuits are turned off,
including the output power transistors. Motor output goes to high impedance. When the system is switched to
stand-by mode while the motor is running, the system enters an idling state because of the body diodes. However,
when the system switches to stand-by from any other mode (except the brake mode), the control logic remains in the
high state for at least 50µs before shutting down all circuits.
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. To operate
in this mode, connect the VREF pin to the VCC pin.
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. To operate
in this mode, connect the VREF pin to the VCC pin.
d) Brake mode
This operating mode is used to quickly stop the motor (short circuit brake). It differs from the stand-by mode because
the internal control circuit is operating in the brake mode. Please switch to stand-by mode (rather than the brake
mode) to save power and reduce consumption.
OFF
OFF ON
OFF OFF
ON OFF
OFF
M
M
M
M
OFF
OFF OFF
ON ON
OFF ON
ON
a) Stand-by mode
b) Forward mode
c) Reverse mode
Fig.33 Four basic operations (output stage)
d) Brake mode
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TSZ22111･15･001
11/19
TSZ02201-0P2P0B300080-1-2
25.Dec.2012 Rev.002
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