NJW4303 Datasheet, PDF (1/28 Pages) New Japan Radio – PWM 3-PHASE DC BRUSHLESS MOTOR CONTROLLER

NJW4303
PWM 3-PHASE DC BRUSHLESS MOTOR CONTROLLER
„ GENERAL DESCRIPTION
The NJW4303 is a 3-Phase Brushless DC Motor Control
pre-driver IC with PWM control. It generates the most optimal
current flow patterns by receiving rotor magnetic pole detection
signals from hall elements of 3-phase brushless motor.
Operational voltage range for the IC has margin as 9.0V to
35V(maximum voltage of 40V), and it fits for a 12V/24V power
supply. It is possible to put practical use such as speed control by
internal oscillation circuit, and torque limiter control by current
sensory circuit. With NJW4303, high reliability of various motor
drive controls can be realized by a variety of function and a
substantial protection circuit.
„ PACKAGE OUTLINE
NJW4303V
„ FEATURES
• Maximum Supply Voltage
: 40V
• Operating Voltage
: 9.0 V to 35V
• 3-Phase Full-Wave PWM Predriver
: Hi-side: Pch-FET/ Low-side: Nch-FET
• Low-side Gate Voltage Clamp
: Gate Voltage=18V max.
• Internal PWM Oscillation Circuit
: Frequency Setting by External Capacitor
• Current Protection Circuit
: Current limit=0.25V±10%
• Low-Voltage Protection Circuit
• Forward/Reverse Direction
: Changeable while Rotating
: Controllable Dead-Time Settings
• Soft-Start Function
: Using External Capacitor
• ON/OFF Function
: Stop with S/S Pin
• Brake Function
• Lock Protection System
• Thermal Shutdown Circuit
• 120°/60° Phase Difference Change Function
• Multi-FG Output
: 2bit Input Change Type
• Bi-CDMOS Technology
• Package Outline
: SSOP32
„ PIN CONNECTION
1pin
VREF
H1+
H1-
H2+
H2-
H3+
H3-
N.C
FG
FR
BR
N1
N2
DEC
S/S
VERR
VCC
UH
VH
WH
N.C
N.C
GND
UL
VL
WL
N.C
ILIMIT
FRC
Ct
OSC
GND
1.VREF
2.H1+
3.H1-
4.H2+
5.H2-
6.H3+
7.H3-
8.N.C
9.FG
10.FR
11.BR
12.N1
13.N2
14.DEC
15.S/S
16.VERR
17.GND
18.OSC
19.Ct
20.FRC
21.ILIMIT
22.N.C
23.WL
24.VL
25.UL
26.GND
27.N.C
28.N.C
29.WH
30.VH
31.UH
32.VCC
Ver. 2009-11-13
-1-