TC78H600FNG/FTG
2012-09-05
18
(2) Constant current PWM
Note 1: A power supply capacitor should be connected as close as possible to the IC.
Note 2: When the power is turned on and off, set IN1 and IN2 for low. If IN1 and IN2 are set high in turning on and off
the power, unexpected current may be flown in the output pin depending on the situation.
Caution for using
Utmost care is necessary in the design of the output, V
CC
, and GND lines since the IC may be destroyed by
short-circuiting between outputs, air contamination faults, or faults due to improper grounding, or by short-circuiting
between contiguous pins.
Especially, power supply pins (Vcc, VM) and output pins (AO1, AO2, BO1, and BO2) might destroy the IC and the
peripheral parts, cause smoke and ignition, and also do injury when they short-circuit an adjacent pin and other pins.
The IC may be destroyed when mounted in the wrong orientation. Thus, please mount it with great care. Please use
the power supply fuse.
Vcc
ALERT
SELECT
STBY
IN1A
IN2A
OSC
Vref
GND
VM
AO1
AO2
BO2
BO1
RSGNDA
RSGNDB
CPU
I/O
TC78H600FNG/FTG
V
M
＝5V
+
-
220pF
1Ω
1Ω
0.1μF 33μF
Vcc=3.3V
+
-
0.1μF 10μF
PWMA
IN1B
IN2B
PWMB
DCブラシ
モータ
DCブラシ
モータ
RNF
RNF
DC
brush
motor
DC
brush
motor
VM=5V
