NJW4303 [NJRC]
PWM 3-PHASE DC BRUSHLESS MOTOR CONTROLLER; PWM 3相直流无刷电机控制器
| 型号： | NJW4303 |
| 厂家： | 
NEW JAPAN RADIO |
| 描述： | PWM 3-PHASE DC BRUSHLESS MOTOR CONTROLLER |
| 文件： | 总28页 (文件大小：341K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NJW4303
PWM 3-PHASE DC BRUSHLESS MOTOR CONTROLLER
GENERAL DESCRIPTION
PACKAGE OUTLINE
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.
NJW4303V
FEATURES
• Maximum Supply Voltage
• Operating Voltage
: 40V
: 9.0 V to 35V
• 3-Phase Full-Wave PWM Predriver
• Low-side Gate Voltage Clamp
• Internal PWM Oscillation Circuit
• Current Protection Circuit
: Hi-side: Pch-FET/ Low-side: Nch-FET
: Gate Voltage=18V max.
: Frequency Setting by External Capacitor
: Current limit=0.25V±10%
• Low-Voltage Protection Circuit
• Forward/Reverse Direction
: Changeable while Rotating
: Controllable Dead-Time Settings
: Using External Capacitor
: Stop with S/S Pin
• Soft-Start Function
• ON/OFF Function
• Brake Function
• Lock Protection System
• Thermal Shutdown Circuit
• 120°/60° Phase Difference Change Function
• Multi-FG Output
• Bi-CDMOS Technology
• Package Outline
: 2bit Input Change Type
: SSOP32
PIN CONNECTION
1pin
VREF
H1+
H1-
H2+
H2-
H3+
H3-
N.C
FG
VCC
UH
VH
WH
N.C
N.C
GND
UL
1.VREF
2.H1+
3.H1-
4.H2+
5.H2-
6.H3+
7.H3-
8.N.C
17.GND
18.OSC
19.Ct
20.FRC
21.ILIMIT
22.N.C
23.WL
24.VL
VL
9.FG
25.UL
FR
BR
N1
N2
WL
10.FR
11.BR
12.N1
13.N2
14.DEC
15.S/S
16.VERR
26.GND
27.N.C
28.N.C
29.WH
30.VH
N.C
ILIMIT
FRC
Ct
OSC
GND
DEC
S/S
VERR
31.UH
32.VCC
Ver. 2009-11-13
- 1 -
NJW4303
PIN FUNCTION LIST
Terminal
Pin#
Function
Remark
Name
1
VREF
H1+
H1-
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
Outputs Supply Voltage of 5V
Use with H1-
2
3
Use with H1+
4
H2+
H2-
Use with H2-
5
Use with H2+
6
H3+
H3-
Use with H3-
7
8,22,27,28
9
Use with H3+
N.C.
FG
No Connection
Output Rotary Signal
FG pulse Output Terminal
Forward/Reverse Direction
Input Terminal
10
FR
L, or Open=Forward Direction, H=Reverse Direction
11
12
13
14
15
BR
N1
Short Brake Input Terminal
FG Pattern Switching Terminal1
FG Pattern Switching Terminal2
Hall Input Phase Switching Terminal
Start and Stop input Terminal
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
N2
DEC
S/S
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
18
GND
OSC
Logic Ground Terminal
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
Capacitor, set On/Off timer for the Output at the time of activated
Lock Protection.
PWM Control Capacitor Terminal
Lock Protection Capacitor
Connection Terminal
19
Ct
Dead-Time Capacitor Connection
Terminal
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
20
FRC
21
23
24
25
29
30
31
32
ILIMIT
WL
Over Current Sensing Terminal
Output Terminal WL
VL
Output Terminal VL
Connect to Nch Gate Driver
UL
Output Terminal UL
Connect to Nch Gate Driver
WH
VH
Output Terminal WH
Output Terminal VH
Connect to Pch Gate Driver
Connect to Pch Gate Driver
UH
Output Terminal UH
Connect to Pch Gate Driver
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.
1
N1
H
N2
H
FG
1/2 Frequency Signal from H1
Signal from H1
2
H
L/OPEN
H
3
L/OPEN
L/OPEN
1/2 Frequency Signal from 3 Hall Compound Signals
3 Hall Compound Signals
4
L/OPEN
- 2 -
NJW4303
BLOCK DIAGLAM
FG
VREF
VCC
VREF
UVLO
UH
VH
WH
TSD
S/S
DEC
N1
N2
Rotor
Position
Decode
H1+
H1-
+
-
H2+
H2-
+
-
H3+
H3-
UL
VL
WL
+
-
FR
FRC
BR
Dead
Time
Saw
Oscillator
OSC
PWM Logic
+
-
VERR
GND
+
-
ILIMIT
Lock
Detect
Ct
- 3 -
NJW4303
ABSOLUTE MAXIMUM RATINGS
(Ta=25°C)
PARAMETER
Supply Voltage
SYMBOL
RATINGS
UNIT
V
Remark
VCC
VOH
VFG
VLIM
VVERR
VIH
40
40
7
VCC PIN
Hi-side Output Terminal Voltage
FG Terminal Voltage
V
UH, VH, WH PIN
FG PIN
V
LIMIT Terminal Voltage
VERR Terminal Voltage
Hall Input Terminal Voltage
Logic Input Terminal Voltage
Reference Voltage Output
Current
3.5
6
V
ILIMIT PIN
VERR PIN
V
4.5
7
V
H1+, H1-, H2+, H2-, H3+, H3- PIN
BR, FR, DEC, N1/N2, S/S PIN
VIN
V
IREF
30
mA
VREF PIN
Hi-side Output Current
Low-side Output Current
FG Output Current
IOH
IOL
40
±40
15
mA
mA
mA
UH, VH, WH PIN
UL, VL, WL PIN
FG PIN
IFG
Power Dissipation
PD
1190
mW Ú Board Mounted
Operating Ambient Temperature
Storage Temperature
Topr
Tstg
-40 to +85
-50 to +150
°C
°C
Ú Mounted on designated board based on EIA/JEDEC. (114.3x76.2x1.6mm: 2Layers, FR-4)
RECOMMENDED OPERATIONAL CONDITIONS
(Ta=25°C)
PARAMETER
SYMBOL
VCC
TEST CONDITION
MIN.
9.0
TYP. MAX. UNIT
Logic Supply Voltage
24.0
35.0
V
- 4 -
NJW4303
ELECTRICAL CHARACTERISTICS
VCC=24V, VIH1+= VIH3+=3.0V, VIH1-= VIH2-= VIH3-=2.0V, VIH2+=1.0V, VIN= VLIM= VCT=0V,
VVERR=4.5V, VOSC=4.5V→0.5V, CVREF=1uF, Ta=25°C
PARAMETER
GENERAL
SYMBOL
TEST CONDITION
VCC=12V
MIN.
TYP.
MAX.
UNIT
Supply current 1
ICC1
ICC2
-
-
5.3
6.4
8.3
9.4
mA
mA
Supply current 2
THERMAL SHUTDOWN BLOCK
Thermal shutdown operating
Thermal shutdown recovery
Thermal shutdown hysteresis
TTSD1
TTSD2
∆TTSD
-
-
170
135
35
-
-
°C
°C
°C
UNDER VOLTAGE LOCK OUT BLOCK
VCC Decreasing
VCC Increasing
UVLO operating voltage
UVLO recovery voltage
UVLO hysteresis voltage
VUVLO1
6.3
6.8
-
6.8
7.3
0.5
7.3
7.8
-
V
V
V
VUVLO2
∆VUVLO
LOCK PROTECTION BLOCK (Ct PIN)
High level voltage
VHCt
VLCt
ICHGCt
3.30
0.90
2.5
0.25
-
3.55
1.00
5.5
3.80
1.30
9.0
0.90
-
Low level voltage
Lock charge current
Lock discharge current
Lock charge/discharge current
uA
uA
-
IDCHGCt
0.55
10
ICHGCt/IDCHGCt
REFERENCE VOLTAGE BLOCK (VREF PIN)
Reference voltage supply
Load regulation
VREF
IVREF=1mA
4.5
5.0
15
50
5.5
60
V
IVREF=1 to 10 mA
-
-
mV
mV
∆VLOVREF
∆VLIVREF
Line regulation
VCC=9 to 35V, IVREF=1 mA
100
HALLAMP BLOCK (H1+, H1-, H2+, H2-, H3+, H3- PIN)
Hysteresis Voltage range
Input bias current
10
-
30
-
50
mV
uA
∆VHYSIH
IBIH
Per each input
1.5
HI-SIDE BLOCK (UH, VH, WH PIN)
Hi-side output voltage
VOLH
IOLEAKH
LOW-SIDE BLOCK (UL, VL, WL PIN)
IOH=30 mA
VOH=35V
-
-
0.5
-
1.0
1
V
Hi-side leak current
uA
Low-side output H voltage1
Low-side output H voltage2
Low-side output L voltage
Low-side clamp voltage
FG OUTPUT (FG PIN)
Output voltage
VOHL1
IOLSOURCE=30 mA ,VCC=12V
IOLSOURCE=30 mA
8.0
8.0
-
10.0
10.0
0.5
-
-
-
V
V
V
V
VOHL2
VOLL
VCLL
IOLSINK=30 mA
1.0
18
IOLSOURCE=0.1 mA ,VCC=35V
-
VFGL
IFG=10 mA
VFG=5V
-
-
0.3
-
0.7
1
V
Leak current
ILEAKFG
uA
- 5 -
NJW4303
ELECTRICAL CHARACTERISTICS
VCC=24V, VIH1+= VIH3+=3.0V, VIH1-= VIH2-= VIH3-=2.0V, VIH2+=1.0V, VIN= VLIM= VCT=0V,
V
VERR=4.5V, VOSC=4.5V→0.5V, CVREF=1uF, Ta=25°C
PARAMETER SYMBOL
OVER CURRENT SENSOR BLOCK (ILIMIT PIN)
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Sense voltage
VDETLIM
IBILM
0.225 0.250 0.275
V
Input bias current
-
1.6
5.0
uA
ERROR AMP BLOCK (VERR PIN)
PWM0% sense voltage
PWM100% sense voltage
Input bias current
VPWM1VERR PWMDUTY=0%
VPWM2VERR PWMDUTY=100%
IBVERR
-
3.6
-
-
-
0.5
-
V
V
1.6
5.0
uA
OSCILLATOR BLOCK (OSC PIN)
Saw wave peak voltage
Saw wave bottom voltage
OSC charge current
VPOSC
VBOSC
2.7
1.00
30
1
3.0
1.35
50
3.3
1.60
70
3
V
V
ICHGOSC
IDCHGOSC
uA
mA
kHz
OSC discharge current
Oscillation frequency
2
fOSC
COSC=1000pF
-
28
-
FR DEAD TIME BLOC (FRC PIN)
High level voltage
VHFRC
VLFRC
3.15
0.9
16
8
3.5
1.0
26
3.85
1.2
36
28
-
V
Low level voltage
V
FRC charge current
ICHGFRC
IDCHGFRC
tDFRC1
uA
uA
ms
ms
FRC discharge current
FRC dead band time1
FRC dead band time2
18
CFRC=1uF
-
140
100
tDFRC2
CFRC=1uF
-
-
CONTOROL INPUT BLOCK (FR, BR, DEC, N1, N2, S/S PIN)
Input High level current
Input low level current
Pull-down resistance
IHIN
ILIN
RIN
VIN=4.5V,per each input
VIN=0V,per each input
25
-
40
-
60
1
uA
uA
kΩ
-
110
-
PIN OPERATIONAL CONDITIONS
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
HALLAMP INPUT (H1+, H1-, H2+, H2-, H3+, H3- PIN)
Hall Input Sensitivity
Peak to peak
0.1
0
-
-
-
V
V
∆VMIH
VICMIH
Hall Input voltage range
3.5
CONTOROL INPUT (FR, BR, DEC, N1, N2, S/S PIN)
High level voltage
VHIN
VLIN
2
0
-
-
5
V
V
Low level voltage
0.8
VERR INPUT (VERR PIN)
Input voltage range
VICMVERR
0
-
4.5
V
- 6 -
NJW4303
PIN / CIRCUIT OPERATIONAL DEFINITION
¡ Hall Input Pin Input Common-Mode Voltage Definition ¡ Hall Input Hysteresis Voltage Definition
(Hall Amp Block)
(Hall Amp Block)
V
ICMIH
V
IH
3.5V
LOGIC INVERSION
LOGIC INVERSION
3.5V
V
∆
HYSIH
0V
0V
¡ Input pins thresh operational Definition
¡ FR Dead Time Definition (FR Dead Time Block)
(FR, BR, N1, N2, DEC, S/S PIN)
ROTATING
DIRECTION
RVS
FWD
RVS
VIN
STOP
STOP
(FORWARD)
(REVERSE)
(REVERSE)
VFR
2V
5V
HIGH Level Voltage
0.8V
2.0V
VFRC
Undefined
TIME t
VVREF
0.8V
LOW Level Voltage
TIME t
0V
DFRC1
DFRC2
t
t
¡Oscillation Frequency Definition(Oscillation Bloc)
VOSC
Time t
tCHGOSC
tDCHGOSC
¡ PWM 100% Sensory Voltage / PWM 100% Sensory Voltage Definition (Error Amplifier Block)
VVERR
Full speed ( = PWM 100%)
V
VVERR
POSC
variable speed control
V
VOSC
BOSC
stop ( = PWM 0%)
- 7 -
NJW4303
¡ Sensing Voltage/ Reset Voltage Definition (Over Current Sensing Block)
VOSC
VDETLIM
VILIMIT
time
VOL
Active
L
Active
(VUL,VVL,VWL
)
time
Motor
Action
Rotation
STOP
Rotation
time
¡ Lock Protection Detection/ Reset Time Definition (Lock Protection Block)
VCt
VHCt
VLCt
time
tDCt
tRCt
¡ THERMAL SHUTDOWN OPERATIONSL DEFINITION (Thermal shutdown block)
TSD RESET TEMP
TSD OPERATING
TEMP
(OUTPUT STOP)
HYSTERESIS
TEMP
(NORMAL
OPERATION)
0
°C
85
120
150
170
°C
TEMP
°C
°C
°C
¡ UNDER VOLTAGE PROTECTION OPERATIONAL DEFENITION (UNDER VOLTAGE PROTECTION BLOCK)
VCC
UVLO RESET VOLTAGE
(NORMAL OPERATION)
35.0V
9.0V
UVLO2
V
HYSTERESIS VOLTAGE
UVLO1
V
UVLO OPERATING VOLTAGE
(OUTPUT STOP)
0V
- 8 -
NJW4303
TRUTH TABLE
¡ INPUT VS OUTPUT TRUTH TABLE1 (DEC=L, H1+>H1-, H2+>H2-, H3+>H3-="H", Don't Care="X")
H1
H
H
L
H2
L
H3
L
BR
TSD UVLO S/S VERR FR
DEC
N1
N2
UH
VH
WH
UL
H
L
VL
WL
FG VREF
COMMENT
Hi-Z Hi-Z
Hi-Z Hi-Z
L
L
L
L
H
H
H
L
L
L
H
H
L
L
Hi-Z
L
L
Hi-Z Hi-Z
Hi-Z Hi-Z
L
L
L
FR="L"
FWD Rotation
L
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
L
H
H
H
X
X
L
L
H
X
X
X
X
X
X
X
X
L
L
L
ON
L
H
H
H
L
L
L
H
H
L
Hi-Z
L
L
Hi-Z
Hi-Z
L
L
L
Hi-Z
Hi-Z
L
L
H
H
H
L
L
H
L
L
Hi-Z
L
L
Hi-Z Hi-Z
L
H
H
L
H
H
H
L
L
Hi-Z
Hi-Z
L
L
Hi-Z
Hi-Z
L
L
L
Hi-Z
L
H
H
L
L
L
FR="H"
REV Rotation
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
ON
L
H
H
H
L
Hi-Z Hi-Z
Hi-Z Hi-Z
L
L
Hi-Z
L
L
L
H
H
L
L
H
H
H
L
L
L
Hi-Z Hi-Z
L
L
Hi-Z
L
L
Hi-Z Hi-Z
Hi-Z Hi-Z
L
L
H
L
L
H
H
H
L
L
H
H
L
L
Hi-Z
L
L
Hi-Z Hi-Z
Hi-Z Hi-Z
L
L
L
FRC="L"
FWD Rotation
L
ON
Hi-Z
L
H
H
H
L
L
L
H
H
L
L
Hi-Z
Hi-Z
L
L
Hi-Z
Hi-Z
L
L
L
L
H
H
H
L
L
H
L
Hi-Z
L
L
Hi-Z Hi-Z
Hi-Z Hi-Z
H
H
H
L
L
L
Hi-Z
L
L
Hi-Z Hi-Z
Hi-Z Hi-Z
L
LOCK PROTECTION
Operation
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
ON
L
H
H
H
L
L
Hi-Z
L
L
Hi-Z
Hi-Z
L
L
Hi-Z
Hi-Z
L
H
H
H
L
L
Hi-Z
L
L
Hi-Z Hi-Z
Hi-Z Hi-Z
H
H
H
L
L
L
Hi-Z
L
L
Hi-Z Hi-Z
Hi-Z Hi-Z
L
OVER CURRENT
Operation
L
ON
Hi-Z
L
H
H
H
L
L
L
Hi-Z
Hi-Z
L
L
Hi-Z
Hi-Z
L
L
H
H
H
L
L
Hi-Z
L
L
Hi-Z Hi-Z
Hi-Z Hi-Z
H
H
H
L
L
L
Hi-Z
L
L
Hi-Z Hi-Z
Hi-Z Hi-Z
L
VERR="L"
PWM Operation
L
ON
Hi-Z
L
H
H
H
L
L
L
Hi-Z
Hi-Z
L
L
Hi-Z
Hi-Z
L
H
H
H
L
L
Hi-Z
L
L
H
H
H
L
L
Hi-Z
L
L
S/S="H"
STOP Operation
X
X
X
ON
X
H
X
X
X
X
X
X
X
Hi-Z Hi-Z Hi-Z
Hi-Z Hi-Z Hi-Z
Hi-Z Hi-Z Hi-Z
ON
Hi-Z
L
H
H
H
L
L
L
H
H
H
L
L
Hi-Z
L
L
H
H
H
L
L
Hi-Z
L
L
UVLO=ON
UVLO Operation
ON
Hi-Z
L
H
H
H
L
L
L
H
H
H
L
L
Hi-Z
L
L
H
H
H
L
L
Hi-Z
L
L
TSD=ON
TSD Operation
ON
ON
Hi-Z
L
H
H
H
L
L
L
H
H
H
L
L
Hi-Z
L
L
H
H
H
L
L
Hi-Z
L
L
BR="H"
BRAKE Operation
X
X
L
L
L
ON
L
H
H
H
Hi-Z
L
L
H
L
Hi-Z
¡ INPUT VS OUTPUT TRUTH TABLE2 (DEC=L, Invalid Code Pattern)
(H1+>H1-, H2+>H2-, H3+>H3-="H", Don't Care="X")
BR
L
TSD UVLO S/S VERR FR
DEC
L
N1
L
N2
L
UH
VH
WH
UL
L
VL
L
WL
L
FG VREF
COMMENT
H1
H
L
H2
H
L
H3
H
L
L
Invalid Code Pattern
X
X
X
X
X
X
X
X
X
X
Hi-Z Hi-Z Hi-Z
ON
Hi-Z
H
L
H
L
H
L
L
Invalid Code Pattern
BR="H" BARKE Operation
H
L
L
L
L
L
L
L
L
L
ON
Hi-Z
- 9 -
NJW4303
¡ INPUT VS OUTPUT TRUTH TABLE3 (DEC=H, H1+>H1-, H2+>H2-, H3+>H3-="H", Don't Care="X")
H1
H
H
H
L
H2
L
H3
L
BR
TSD UVLO S/S VERR FR
DEC
N1
N2
UH
VH
WH
L
UL
H
L
VL
L
WL
L
FG VREF
COMMENT
Hi-Z Hi-Z
Hi-Z Hi-Z
Hi-Z
L
H
H
H
L
L
L
H
H
L
L
H
H
H
L
L
Hi-Z Hi-Z
Hi-Z Hi-Z
L
L
Hi-Z
ON
FR="L"
FWD Rotation
L
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
L
H
H
X
X
L
L
H
X
X
X
X
X
X
X
H
L
L
L
L
H
H
L
L
Hi-Z
L
L
Hi-Z
Hi-Z
L
L
L
Hi-Z
Hi-Z
L
L
L
L
H
L
L
H
H
H
L
L
L
Hi-Z Hi-Z
L
H
H
L
Hi-Z
L
H
H
H
L
L
Hi-Z
Hi-Z
L
L
Hi-Z
Hi-Z
L
L
L
H
H
H
L
H
H
L
L
Hi-Z
ON
L
FR="H"
REV Rotation
L
L
L
L
L
L
L
H
L
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
Hi-Z Hi-Z
Hi-Z Hi-Z
L
L
L
L
H
H
L
Hi-Z
L
L
L
L
Hi-Z Hi-Z
L
L
H
H
H
L
L
L
Hi-Z Hi-Z
Hi-Z Hi-Z
L
L
Hi-Z
L
H
H
H
L
L
H
H
H
L
L
Hi-Z Hi-Z
Hi-Z Hi-Z
Hi-Z
ON
L
LOCK PROTECTION
Operation
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
Hi-Z
Hi-Z
L
L
Hi-Z
Hi-Z
L
Hi-Z
L
L
L
H
H
H
L
L
L
Hi-Z Hi-Z
Hi-Z Hi-Z
Hi-Z
L
H
H
H
L
L
L
H
H
H
L
L
Hi-Z Hi-Z
Hi-Z Hi-Z
Hi-Z
ON
OVER CURRENT
Operation
L
L
L
Hi-Z
L
L
Hi-Z
Hi-Z
L
L
Hi-Z
Hi-Z
L
L
L
H
H
H
L
L
L
Hi-Z Hi-Z
Hi-Z Hi-Z
Hi-Z
L
H
H
H
L
L
L
H
H
H
L
L
Hi-Z Hi-Z
Hi-Z Hi-Z
Hi-Z
ON
L
VERR="L"
PWM Operation
L
L
L
Hi-Z
Hi-Z
L
L
Hi-Z
Hi-Z
Hi-Z
L
L
L
H
H
H
L
L
L
Hi-Z
L
H
H
H
L
L
H
H
H
L
Hi-Z
ON
L
S/S="H"
STOP Operation
X
X
X
ON
X
H
X
X
X
X
X
X
X
Hi-Z Hi-Z Hi-Z
Hi-Z Hi-Z Hi-Z
Hi-Z Hi-Z Hi-Z
L
Hi-Z
L
L
L
H
H
H
L
L
L
Hi-Z
L
H
H
H
L
L
H
H
H
L
Hi-Z
ON
UVLO=ON
UVLO Operation
L
Hi-Z
L
L
L
L
H
H
H
L
L
L
Hi-Z
L
H
H
H
L
L
H
H
H
L
Hi-Z
ON
L
TSD=ON
TSD Operation
ON
L
Hi-Z
L
L
L
H
H
H
L
L
L
Hi-Z
L
H
H
H
L
L
H
H
H
L
Hi-Z
ON
BR="H"
X
X
L
L
L
BRAKE Operation
L
Hi-Z
L
L
L
L
¡ INPUT VS OUTPUT TRUTH TABLE4 (DEC=H, Invalid Code Pattern)
(H1+>H1-, H2+>H2-,H3+>H3-="H", Don't Care="X")
BR
TSD UVLO S/S VERR FR
DEC
N1
N2
L
UH
VH
WH
UL
L
VL
L
WL
L
FG VREF
COMMENT
H1
H
L
H2
H3
H
L
L
L
Invalid Code Pattern
L
X
X
X
X
X
X
X
X
X
X
H
L
Hi-Z Hi-Z Hi-Z
ON
H
L
Hi-Z
H
L
H
L
L
Invalid Code Pattern
BR="H" BARKE Operation
H
H
L
L
L
L
L
L
L
L
ON
H
Hi-Z
- 10 -
NJW4303
TIMING CHART
Ú Codes used in Hall input:
Logics of H1, H2, H3 are expressed with each
3-colum starting from the top.
High Logic = 1, Low Logic = 0
1. Normal Function→PWM Function
ELECTRIC DEGREE POSITION (deg)
240 300 360 420 480
0
60
120
180
540
600
660
720
H1
H2
HALL INPUT
H3
code
100
110
010
011
001
101
100
110
010
011
001
101
DEC(=L)
FR(=L)
N1(=L)
N2(=L)
FG
UH
VH
Hi-SIDE
WH
UL
VL
LOW-SIDE
WL
TORQUE
CONTROL
INPUT
VERR
OSC
Fullspeed (PWMDUTY=100%)
Reduced Speed (PWMDUTY=70%)
- 11 -
NJW4303
2. NORMAL FUNCTION→FORWARD/REVERSE SWITCHING while rotating
ELECTRIC DEGREE POSITION (deg)
0
60
120
180
240
300
360
420
480
540
600
660
720
H1
H2
HALL INPUT
H3
code
100
110
010
010
110
100
101
001
011
011
001
101
DEC(=L)
N1(=L)
N2(=L)
FG
FR
FORWARD/REVERS
INPUT
FRC
UH
VH
Hi-SIDE
WH
UL
VL
LOW-SIDE
WL
FR=L
Deadtime
FR=H
Deadtime
FR=L
- 12 -
NJW4303
3. NORMAL FUNCTION→BRAKE CONTROL→BRAKE RESET
ELECTRIC DEGREE POSITION (deg)
0
60
120
180
240 300 360 420 480
540
600
660
720
H1
H2
HALL INPUT
H3
code
100
110
010
011
001
101
100
110
010
011
001
101
DEC(=L)
FR(=L)
N1(=L)
N2(=L)
FG
BRAKE INPUT
BR
UH
VH
WH
Hi-SIDE
UL
VL
LOW-SIDE
WL
motor rotate function
BR=L
Brake function
BR=H
motor rotate function
BR=L
Deadtime
Deadtime
- 13 -
NJW4303
4. NORMAL FUNCTION→LOCK PROTECTION→LOCK RESET
ELECTRIC DEGREE POSITION (deg)
240 300 360 420 480
0
60
120
180
540
600
660
720
H1
H2
HALL INPUT
H3
code
100
110
010
011
011
011
011
001
101
100
110
010
DEC(=L)
FR(=L)
N1(=L)
N2(=L)
FG
CT PIN OUTPUT
CT
UH
VH
WH
HI-SIDE
UL
VL
LOW-SIDE
WL
motor rotate function
Lock function
motor rotate function
- 14 -
NJW4303
5. NORMAL FUNCTION→LOW VOLTAGE PROTECTION→NORMAL FUNCTION
ELECTRIC DEGREE POSITION (deg)
0
60
120
180
240
300
360
420
480
540
600
660
720
VCC
H1
H2
H3
HALL INPUT
code
DEC(=L)
FR(=L)
N1(=L)
N2(=L)
FG
100
110
010
011
001
101
100
110
010
011
001
101
UH
VH
Hi-Z
Hi-Z
Hi-Z
HI-SIDE
WH
UL
VL
LOW-SIDE
WL
TORQUE
CONTROL
INPUT
VERR
OSC
Fullspeed
motor stop (UVLO ON)
Fullspeed
- 15 -
NJW4303
6. NORMAL FUNCTION→STOP FUNCTION (S/S=H)→NORMAL FUNCTION
ELECTRIC DEGREE POSITION (deg)
0
60
120
180
240
300
360
420
480
540
600
660
720
VCC
S/S
H1
H2
HALL INPUT
H3
code
100
110
010
011
001
101
100
110
010
011
001
101
DEC(=L)
FR(=L)
N1(=L)
N2(=L)
FG
UH
VH
Hi-Z
Hi-Z
Hi-Z
HI-SIDE
WH
UL
VL
LOW-SIDE
WL
VERR
OSC
TORQUE
CONTROL
INPUT
Fullspeed
motor stop (STOP ON)
Fullspeed
- 16 -
NJW4303
7. SOFT START FUNCTION
ELECTRIC DEGREE POSITION (deg)
240 300 360 420 480
0
60
120
180
540
600
660
720
VCC
VREF
H1
H2
HALL INPUT
H3
code
110
110
010
011
001
101
100
110
010
011
001
101
DEC (=L)
FR(=L)
N1(=L)
N2(=L)
FG
UH
Hi-SIDE
VH
WH
UL
VL
LOW-SIDE
WL
VERR
TORQUE
CONTROL
INPUT
VERR
OSC
OFF
Soft Start (PWM)
Full speed (no PWM)
- 17 -
NJW4303
8. FG OUTPUT TIMING CHART
OUTPUT TIMING CHART 1 (120 deg Input Mode)
ELECTRIC DEGREE POSITION (deg)
240 300 360 420 480
0
60
120
180
540
600
660
720
H1
H2
HALL INPUT
DEC=L or open
(120 deg input mode)
H3
code
101
100
110
010
011
001
101
100
110
010
011
001
N1=H, N2=H
N1=H, N2=L
N1=L, N2=H
N1=L, N2=L
FG OUTPUT
OUTPUT TIMING CHART 2 (60 deg Input Mode)
ELECTRIC DEGREE POSITION (deg)
240 300 360 420 480
0
60
120
180
540
600
660
720
H1
H2
HALL INPUT
DEC=H
H3
(60 deg input mode)
code
100
110
111
011
001
000
100
110
111
011
001
000
N1=H, N2=H
N1=H, N2=L
N1=L, N2=H
N1=L, N2=L
FG OUTPUT
* When the status of N1/N2 is H/H or L/H, FG output is not synchronized with Hall input, because FG output is produced by using a frequency divider.
- 18 -
NJW4303
FUNCTION DESCRIPTION
¡ Lock Protection Block – Detect/Reset Time
Lock Protection can be done by charging/discharging to the capacitor CCt. Lock Protection Detect time (tDCt) and Reset
time (tRCt) are determined by the value of either Ct charging current (ICHGCt) or Ct discharging current (IDCHGCt) and the
value of the external capacitor CCt. To adjust Detect/Reset Time, change the value of CCt. The calculation formula for
Detect/Reset Time can be described in equation below: adjustment range for CCt is 0.1µF to 10µF.
Symbol
Formula
Comments
tDCt ≅ 4.6 106 CCt
tRCt ≅ 0.46 106 CCt
Detect Time
Reset Time
tDCt
tRCt
Figure1: Lock Protection Detect/ Reset Time Calculating Formula
When the motor is rotating, electric charge of CCt capacitor discharging is produced repeatedly by input from hall signal.
However, when we set the motor to low speed using the speed control application, input time from hall signal is longer,
with this, Ct voltage level will increase and malfunction can be expected. When this occurs, it is recommended to add
Ct discharge circuit by using FG signal output. Please refer to typical application circuit 2.
VREF
¡ Reference Voltage Block – How to use VREF
When using VREF pin, make sure that it is not oscillating.
Use the recommended VCC operational condition.
10k
10k
H1+/H2+/H3
¡ Hall Amp Block - Capacitor
Input from hall signal requires more than that of the Hall Input Sensitivity
(∆VMIH=100mV).
H1- to H3-
pin connecting
Hall Amp
Block
Taking measures in keeping noise immunity, when using FG output,
FG jitter can be expected. When this occurs, it is recommended
to add capacitors more than 0.01µF between Hall input pins.
¡ Hall Amp Block – How to use Hall IC
20k
10k
Hall IC
Hall input pins H1-, H2- and H3- are biased to VREF/2.
To keep Hall IC Output voltage within the Hall Input voltage range (VICMIH),
it needs to add 2 pieces of biased resistor for every H1+, H2+ and H3+ pins.
Figure2: Hall IC application
¡ Oscillation Block - Oscillation Frequency
OSC pin produce Oscillating wave by charging/discharging to the capacitor COSC. Oscillating frequency (fOSC) is
modulated by COSC, and determined by charging time (tCHGOSC) and discharging time (tDCHGOSC). The oscillation
frequency depends on tCHGOSC in great deal compare to tDCHGOSC, sothat the calculation formula for oscillation frequency
can be described in equation below: adjustment range for COSC is 330pF to 2200pF.
Symbol
Formula
Comments
FOSC ≅ 28 10-6 / COSC
Oscillation Frequency
fOSC
Figure3: Oscillation Frequency Calculating Formula
¡ FR Dead Time Block – Dead Band Time
FR Dead band time is divided in two types depending on giving conditions.
The two dead band time are determined by the value of either FRC charged current or FRC discharge current IDCHGFRC
,
and the value of an external capacitor. To adjust the dead band time, change the value of CFRC. FR dead band time can
be expressed as following: adjustment range for CFRC is more than 1pF.
Symbol
Formula
Comments
FR : H → L (open)
FR : L (open) → H
tDFRC1 ≅ 140 103 CFRC
tDFRC2 ≅ 140 103 CFRC
FR Dead Band Time1
FR Dead Band Time2
tDFRC1
tDFRC2
Figure4: Dead Band Time Calculating Formula
- 19 -
NJW4303
TYPICALAPPLICATION CIRCUIT 1
VM
+
+
+
RFG
CVREF
CVCC
GND
FG-OUT
FG
VREF
VCC
VREF
UVLO
UH
TSD
S/S
3Phase Motor
DEC
N1
N
VH
S
S
N2
N
Rotor
Position
Decode
H1+
H1-
WH
H
H
H
+
-
H2+
H2-
+
-
UL
VL
H3+
H3-
+
-
FRC
FR
Dead
Time
CFRC
BR
WL
OSC
Saw
Oscillator
PWM Logic
COSC
+
-
VERR
GND
ILIMIT
+
-
CVERR
Lock
Detect
Lowpass Filter
Cct
- 20 -
NJW4303
TYPICALAPPLICATION CIRCUIT 2
VM
+
+
+
CVREF
CVCC
GND
VREF
VCC
VREF
UVLO
UH
TSD
S/S
3Phase Motor
N
DEC
N1
VH
S
S
N2
N
Rotor
Position
Decode
H1+
WH
H
H
H
+
-
H1-
H2+
H2-
+
-
UL
VL
H3+
H3-
+
-
FRC
FR
Dead
Time
CFRC
BR
WL
OSC
Saw
Oscillator
PWM Logic
COSC
+
-
VERR
GND
ILIMIT
RFG
+
-
CVERR
Lock
Detect
Lowpass Filter
FG
V-IN
Ct
Cct
V-FG
COMP1
Comparator
R2
C1
FG-IN
R1
+
+
FG-OUT
<Reference Value>
C1=22nF
R1=10kΩ
D1
R3
R2=40kΩ
R3=10kΩ
D1:1S2076
COMP1:NJM2903
- 21 -
NJW4303
TYPICAL CHARACTERISTICS
VCC vs VREF
VCC vs ICC
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
10
Tj=25[oC]
9
Tj=25[oC]
IVREF=1[mA]
8
7
6
5
4
3
2
1
0
0
5
10
15
20
25
30
35
40
0
5
10
15
20
25
30
35
40
VCC[V]
V
CC[V]
IREF vs VREF
IOH vs VOLH
5.50
5.40
5.30
5.20
5.10
5.00
4.90
4.80
4.70
4.60
4.50
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Tj=25[oC]
Tj=25[oC]
VCC=24[V]
VCC=24[V]
0
5
10
15
20
25
30
0
5
10
15
20
25
30
35
40
45
IREF[mA]
IOH [mA]
IOLSINK vs VOLL
IOLSOURCE vs VOHL
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
11.0
10.8
10.6
10.4
10.2
10.0
9.8
Tj=25[oC]
Tj=25[oC]
VCC=24[V]
VCC=24[V]
9.6
9.4
9.2
9.0
0
5
10
15
20
25
30
35
40
45
0
5
10
15
20
25
30
35
40
45
IOLSOURCE[mA]
IOLSINK[mA]
- 22 -
NJW4303
TYPICAL CHARACTERISTICS
IFG vs VFGL
VCC vs VOHL
15
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Tj=25[oC]
CC=24[V]
Tj=25[oC]
V
IOLSOURCE=0.1[mA]
14
13
12
11
10
9
8
7
6
5
0
2
4
6
8
FG[mA]
10
12
14
16
5
10
15
20
25
30
35
40
I
V
CC[V]
VCt vs ICHGCt
VCt vs IDCHGCt
9.00
8.50
8.00
7.50
7.00
6.50
6.00
5.50
5.00
4.50
4.00
3.50
3.00
2.50
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
Tj=25[oC]
Tj=25[oC]
CC=24[V]
VCC=24[V]
V
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
V
Ct[V]
V
Ct[V]
VOSC vs IDCHGOSC
VOSC vs ICHGOSC
2.5
2.0
1.5
1.0
0.5
0.0
52.0
51.5
51.0
50.5
50.0
49.5
49.0
48.5
Tj=25[oC]
Tj=25[oC]
VCC=24[V]
VCC=24[V]
1.00
1.50
2.00
2.50
3.00
3.50
1.00
1.50
2.00
2.50
3.00
3.50
V
OSC[V]
V
OSC[V]
- 23 -
NJW4303
TYPICAL CHARACTERISTICS
VFRC vs ICHGFRC
VFRC vs IDCHGFRC
36
28
26
24
22
20
18
16
14
12
10
8
Tj=25[oC]
Tj=25[oC]
V
CC=24[V]
34
32
30
28
26
24
22
20
18
16
VCC=24[V]
0.0
1.0
2.0
3.0
4.0
5.0
0.0
1.0
2.0
3.0
4.0
5.0
V
FRC[V]
VFRC[V]
Ct vs tDCHGCt
Ct vs tCHGCt
50
45
40
35
30
25
20
15
10
5
5.0
Tj=25[oC]
Tj=25[oC]
VCC=24[V]
VCC=24[V]
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
0.1
1.0
Ct [uF]
10.0
0.1
1.0
Ct [uF]
10.0
COSC vs fOSC
VCC vs fOSC
1000
100
10
30.0
29.5
29.0
28.5
28.0
27.5
27.0
Tj=25[oC]
Tj=25[oC]
VCC=24[V]
COSC=1000[pF]
1
5
10
15
20
25
30
35
40
100
1000
10000
VCC[V]
COSC[pF]
- 24 -
NJW4303
TYPICAL CHARACTERISTICS
CFRC vs fDFRC1
CFRC vs fDFRC2
2000
2000
1800
1600
1400
1200
1000
800
Tj=25[oC]
Tj=25[oC]
VCC=24[V]
1800
VCC=24[V]
1600
1400
1200
1000
800
600
400
200
0
600
400
200
0
0
2
4
6
8
10
12
0
2
4
6
8
10
12
CFRC[uF]
CFRC[uF]
Tj vs ICC2
Tj vs ICC1
12
10
8
12
10
8
VCC=24[V]
VCC=12[V]
6
6
4
4
2
2
0
0
-50
-25
0
25
50
75
100
125
150
-50
-25
0
25
50
Tj [oC]
75
100
125
150
Tj [oC]
Tj vs VUVLO1
Tj vs VUVLO2
9.0
9.0
8.5
8.0
7.5
7.0
6.5
6.0
5.5
VCC Decreasing
VCC Increasing
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
5.0
-50
-50
-25
0
25
50
Tj [oC]
75
100
125
150
-25
0
25
50
Tj [oC]
75
100
125
150
- 25 -
NJW4303
TYPICAL CHARACTERISTICS
Tj vs VREF
Tj vs
V
HYSIH
∆
50
45
40
35
30
25
20
15
10
5.5
VCC=24[V]
VCC=24[V]
5.4
IVREF=1[mA]
5.3
5.2
5.1
5.0
4.9
4.8
4.7
4.6
4.5
-50
-25
0
25
50
75
100
125
150
-50
-25
0
25
50
75
100
125
150
Tj [oC]
Tj [oC]
Tj vs IBIH
Tj vs VOLH
1.5
1.0
VCC=24[V]
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
VCC=24[V]
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
IOH=30[mA]
-50
-25
0
25
50
Tj [oC]
75
100
125
150
-50
-25
0
25
50
75
100
125
150
Tj [oC]
Tj vs VOLL
Tj vs VOHL
1.0
11.0
VCC=24[V]
VCC=24[V]
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
IOLSINK=30[mA]
IOLSOURCE=30[mA]
10.5
10.0
9.5
9.0
8.5
8.0
-50
-25
0
25
50
75
100
125
150
-50
-25
0
25
50
75
100
125
150
Tj [oC]
Tj [oC]
- 26 -
NJW4303
TYPICAL CHARACTERISTICS
Tj vs VFGL
Tj vs VDETLIM
1.00
0.275
0.265
0.255
0.245
0.235
0.225
VCC=24[V]
0.90
VCC=24[V]
IFG=10[mA]
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
-50
-25
0
25
50
75
100
125
150
-50
-25
0
25
50
75
100
125
150
Tj [oC]
Tj [oC]
Tj vs IDCHGOSC
Tj vs ICHGOSC
70
65
60
55
50
45
40
35
30
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
VCC=24[V]
VCC=24[V]
V
OSC=2.5[V]
VOSC=2.5[V]
-50
-25
0
25
50
75
100
125
150
-50
-25
0
25
50
75
100
125
150
Tj [oC]
Tj [oC]
Tj vs fOSC
Tj vs RIN
34
32
30
28
26
24
22
20
250
200
150
100
50
VCC=24[V]
VCC=24[V]
COSC=1000[pF]
0
-50
-25
0
25
50
Tj [oC]
75
100
125
150
-50
-25
0
25
50
Tj [oC]
75
100
125
150
- 27 -
NJW4303
TYPICAL CHARACTERISTICS
Tj vs VHCt
Tj vs VLCt
3.80
1.30
1.25
1.20
1.15
1.10
1.05
1.00
0.95
0.90
VCC=24[V]
3.75
VCC=24[V]
3.70
3.65
3.60
3.55
3.50
3.45
3.40
3.35
3.30
-50
-25
0
25
50
75
100
125
150
-50
-25
0
25
50
Tj [oC]
75
100
125
150
Tj [oC]
Tj vs ICHGCt
Tj vs IDCHGCt
9.0
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
VCC=24[V]
VCC=24[V]
VCt=2.5[V]
V
Ct=2.5[V]
-50
-25
0
25
50
75
100
125
150
-50
-25
0
25
50
75
100
125
150
Tj [oC]
Tj [oC]
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
- 28 -
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