NJW4303

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PIN / CIRCUIT OPERATIONAL DEFINITION

Hall Input Pin Input Common-Mode Voltage Definition

Hall Input Hysteresis Voltage Definition

(Hall Amp Block)

(Hall Amp Block)

Input pins thresh operational Definition

FR Dead Time Definition (FR Dead Time Block)

(FR, BR, N1, N2, DEC, S/S PIN)

Oscillation Frequency Definition(Oscillation Bloc)

PWM 100% Sensory Voltage / PWM 100% Sensory Voltage Definition (Error Amplifier Block)

0V

5V

2.0V

0.8V

HIGH Level Voltage

Undefined

LOW Level Voltage

2V

TIME t

0.8V

V

VREF

V

FRC

V

FR

TIME t

ROTATING

DIRECTION

RVS

(REVERSE)

RVS

(REVERSE)

FWD

(FORWARD)

STOP

STOP

3.5V

0V

V

OSC

Time t

t

DCHGOSC

BOSC

V

POSC

V

V

VERR

Full speed ( = PWM 100%)

stop ( = PWM 0%)

variable speed control

V

OSC

V

VERR

V

OSC

0V

3.5V

∆V

HYSIH

LOGIC INVERSION

LOGIC INVERSION