njw4303 New Japan Radio Co.,Ltd, njw4303 Datasheet - Page 2

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

NJW4303
* All Ground Pins must be connected at the outside.
* Electrical potential of all unused output pins must be fixed at the outside.
- 2 -
FG Pattern by combination with N1 and N2
PIN FUNCTION LIST
8,22,27,28
17,26
Pi n #
No.
10
11
12
13
14
15
16
18
19
20
21
23
24
25
29
30
31
32
1
2
3
4
5
6
7
9
1
2
3
4
Terminal
L/OPEN
L/OPEN
VERR
Name
VREF
ILIMIT
GND
DEC
OSC
VCC
N.C.
FRC
H1+
H2+
H3+
WH
H1-
H2-
H3-
S/S
WL
UH
FG
FR
BR
VH
N1
N2
VL
UL
N1
Ct
H
H
5V Output Voltage Terminal
Hall Element Input Terminal H1+
Hall Element Input Terminal H1-
Hall Element Input TerminalH2+
Hall Element Input Terminal H2-
Hall Element Input Terminal H3+
Hall Element Input Terminal H3-
No Connection
FG pulse Output Terminal
Forward/Reverse Direction
Input Terminal
Short Brake Input Terminal
FG Pattern Switching Terminal1
FG Pattern Switching Terminal2
Hall Input Phase Switching Terminal
Start and Stop input Terminal
Error Amp Voltage Input Terminal
Logic Ground Terminal
PWM Control Capacitor Terminal
Lock Protection Capacitor
Connection Terminal
Dead-Time Capacitor Connection
Terminal
Over Current Sensing Terminal
Output Terminal WL
Output Terminal VL
Output Terminal UL
Output Terminal WH
Output Terminal VH
Output Terminal UH
Motor Voltage Supply Terminal
L/OPEN
L/OPEN
N2
H
H
Function
1/2 Frequency Signal from 3 Hall Compound Signals
Outputs Supply Voltage of 5V
Use with H1-
Use with H1+
Use with H2-
Use with H2+
Use with H3-
Use with H3+
No Connection
Output Rotary Signal
L, or Open=Forward Direction, H=Reverse Direction
L, or Open=Rotation, H=Short Brake
Set FG Pattern by Combination with N2. Cf. the below table
Set FG Pattern by Combination with N1. Cf. the below table
L, or Open=120° Hall Input, H=60° Hall Input
L, or Open=Start, H=Stop
Set Output ON Duty
H=Output ON Duty 100%, L=Output ON Duty 0%
Pull-up to VREF PIN in nonuse
Connecting with Ground
Insert a Capacitor between Grounds. Set PWM frequency
depending on the value of the Capacitor
Insert a Capacitor between Grounds. Depending on the value of the
Insert a Capacitor between Grounds. Depending on the value of the
Capacitor, set Output Dead Band at the time of FR switching
Connect to the ground side of the external driver
Connect to Nch Gate Driver
Connect to Nch Gate Driver
Connect to Nch Gate Driver
Connect to Pch Gate Driver
Connect to Pch Gate Driver
Connect to Pch Gate Driver
Connect motor power source to the terminal
Capacitor, set On/Off timer for the Output at the time of activated
Lock Protection.
1/2 Frequency Signal from H1
3 Hall Compound Signals
Signal from H1
FG
Remark