njw4303 New Japan Radio Co.,Ltd, njw4303 Datasheet - Page 7

• Manufacturer Part Number: njw4303
• Description: Pwm 3-phase Dc Brushless Motor Controller
• Manufacturer: New Japan Radio Co.,Ltd

PIN / CIRCUIT OPERATIONAL DEFINITION
Oscillation Frequency Definition(Oscillation Bloc)
(Hall Amp Block)
(FR, BR, N1, N2, DEC, S/S PIN)
Hall Input Pin Input Common-Mode Voltage Definition
Input pins thresh operational Definition
PWM 100% Sensory Voltage / PWM 100% Sensory Voltage Definition (Error Amplifier Block)
2.0V
0.8V
V
3.5V
V
5V
0V
V
V
OSC
VERR
0V
BOSC
POSC
V
V
IN
ICMIH
LOW Level Voltage
HIGH Level Voltage
variable speed control
Full speed ( = PWM 100%)
stop ( = PWM 0%)
Undefined
t
CHGOSC
t
DCHGOSC
Time t
Hall Input Hysteresis Voltage Definition
FR Dead Time Definition (FR Dead Time Block)
(Hall Amp Block)
3.5V
DIRECTION
ROTATING
V
V
V
V
0V
V
VERR
OSC
OSC
V
0.8V
VREF
IH
V
FRC
2V
FR
LOGIC INVERSION
(REVERSE)
RVS
∆ V
HYSIH
t
DFRC1
STOP
(FORWARD)
FWD
LOGIC INVERSION
NJW4303
t
STOP
DFRC2
(REVERSE)
RVS
TIME t
TIME t
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