MOTOR CONTROLLER. NJW4303 Datasheet

NJW4303 CONTROLLER. Datasheet pdf. Equivalent

NJW4303 Datasheet
Recommendation NJW4303 Datasheet
Part NJW4303
Description PWM 3-PHASE DC BRUSHLESS MOTOR CONTROLLER
Feature NJW4303; NJW4303 PWM 3-PHASE DC BRUSHLESS MOTOR CONTROLLER GENERAL DESCRIPTION The NJW4303 is a 3-Phase Bru.
Manufacture New Japan Radio
Datasheet
Download NJW4303 Datasheet




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