Post on 02-Jan-2020
transcript
NJW4303
- 1 -
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.
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
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
1pin VCC UH VH WH N.C N.C GND UL VL WL N.C ILIMIT FRC Ct OSC GND
VREF H1+ H1-
H2+ H2-
H3+ H3- N.C FG FR BR N1 N2
DEC S/S
VERR
NJW4303V
NJW4303
- 2 -
PIN FUNCTION LIST
* All Ground Pins must be connected at the outside. * Electrical potential of all unused output pins must be fixed at the outside.
Pin# Terminal 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
10 FR Forward/Reverse Direction 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
16 VERR Error Amp Voltage Input Terminal Set Output ON Duty 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
18 OSC PWM Control Capacitor Terminal Insert a Capacitor between Grounds. Set PWM frequency depending on the value of the Capacitor
19 Ct Lock Protection Capacitor 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.
20 FRC 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
21 ILIMIT Over Current Sensing Terminal Connect to the ground side of the external driver 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
FG Pattern by combination with N1 and N2 No. N1 N2 FG 1 H H 1/2 Frequency Signal from H1 2 H L/OPEN Signal from H1 3 L/OPEN H 1/2 Frequency Signal from 3 Hall Compound Signals
4 L/OPEN L/OPEN 3 Hall Compound Signals
NJW4303
- 3 -
BLOCK DIAGRAM
H1+
H2+
H3+
FR
+-
VCC
VREF
VREF
UVLO
SawOscillator
+-
OSC
VERR
PWM Logic
GND
ILIMIT
WL
VL
UL
WH
VH
UH
FRC
BR
FG
LockDetect
Ct
TSD
+-
+-
+-
H1-
H2-
H3-
S/S
N1
N2
DEC
DeadTime
RotorPositionDecode
NJW4303
- 4 -
ABSOLUTE MAXIMUM RATINGS (Ta=25 C)
Mounted on designated board based on EIA/JEDEC. (114.3x76.2x1.6mm: 2Layers, FR-4)
RECOMMENDED OPERATIONAL CONDITIONS (Ta=25 C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Logic Supply Voltage VCC 9.0 24.0 35.0 V
PARAMETER SYMBOL RATINGS UNIT Remark Supply Voltage VCC 40 V VCC PIN Hi-side Output Terminal Voltage VOH 40 V UH, VH, WH PIN FG Terminal Voltage VFG 7 V FG PIN LIMIT Terminal Voltage VLIM 3.5 V ILIMIT PIN VERR Terminal Voltage VVERR 6 V VERR PIN Hall Input Terminal Voltage VIH 4.5 V H1+, H1-, H2+, H2-, H3+, H3- PIN Logic Input Terminal Voltage VIN 7 V BR, FR, DEC, N1/N2, S/S PIN Reference Voltage Output Current
IREF 30 mA VREF PIN
Hi-side Output Current IOH 40 mA UH, VH, WH PIN Low-side Output Current IOL 40 mA UL, VL, WL PIN FG Output Current IFG 15 mA FG PIN Power Dissipation PD 1190 mW Board Mounted Operating Ambient Temperature Topr -40 to +85 C Storage Temperature Tstg -50 to +150 C
NJW4303
- 5 -
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 SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT GENERAL
Supply current 1 ICC1 VCC=12V - 5.3 8.3 mA Supply current 2 ICC2 - 6.4 9.4 mA
THERMAL SHUTDOWN BLOCK Thermal shutdown operating TTSD1 - 170 - C Thermal shutdown recovery TTSD2 135 C Thermal shutdown hysteresis TTSD - 35 - C
UNDER VOLTAGE LOCK OUT BLOCK UVLO operating voltage VUVLO1 VCC Decreasing 6.3 6.8 7.3 V UVLO recovery voltage VUVLO2 VCC Increasing 6.8 7.3 7.8 V UVLO hysteresis voltage VUVLO - 0.5 - V
LOCK PROTECTION BLOCK (Ct PIN) High level voltage VHCt 3.30 3.55 3.80 Low level voltage VLCt 0.90 1.00 1.30 Lock charge current ICHGCt 2.5 5.5 9.0 uA Lock discharge current IDCHGCt 0.25 0.55 0.90 uA Lock charge/discharge current ICHGCt/IDCHGCt - 10 - -
REFERENCE VOLTAGE BLOCK (VREF PIN) Reference voltage supply VREF IVREF=1mA 4.5 5.0 5.5 V Load regulation VLOVREF IVREF=1 to 10 mA - 15 60 mV Line regulation VLIVREF VCC=9 to 35V, IVREF=1 mA - 50 100 mV
HALL AMP BLOCK (H1+, H1-, H2+, H2-, H3+, H3- PIN) Hysteresis Voltage range VHYSIH 10 30 50 mV Input bias current IBIH Per each input - - 1.5 uA
HI-SIDE BLOCK (UH, VH, WH PIN) Hi-side output voltage VOLH IOH=30 mA - 0.5 1.0 V Hi-side leak current IOLEAKH VOH=35V - - 1 uA
LOW-SIDE BLOCK (UL, VL, WL PIN) Low-side output H voltage1 VOHL1 IOLSOURCE=30 mA ,VCC=12V 8.0 10.0 - V Low-side output H voltage2 VOHL2 IOLSOURCE=30 mA 8.0 10.0 - V Low-side output L voltage VOLL IOLSINK=30 mA - 0.5 1.0 V Low-side clamp voltage VCLL IOLSOURCE=0.1 mA ,VCC=35V - - 18 V
FG OUTPUT (FG PIN) Output voltage VFGL IFG=10 mA - 0.3 0.7 V Leak current ILEAKFG VFG=5V - - 1 uA
NJW4303
- 6 -
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 SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT OVER CURRENT SENSOR BLOCK (ILIMIT PIN)
Sense voltage VDETLIM 0.225 0.250 0.275 V Input bias current IBILM - 1.6 5.0 uA
ERROR AMP BLOCK (VERR PIN) PWM0% sense voltage VPWM1VERR PWMDUTY=0% - - 0.5 V PWM100% sense voltage VPWM2VERR PWMDUTY=100% 3.6 - - V Input bias current IBVERR - 1.6 5.0 uA
OSCILLATOR BLOCK (OSC PIN) Saw wave peak voltage VPOSC 2.7 3.0 3.3 V Saw wave bottom voltage VBOSC 1.00 1.35 1.60 V OSC charge current ICHGOSC 30 50 70 uA OSC discharge current IDCHGOSC 1 2 3 mA Oscillation frequency fOSC COSC=1000pF - 28 - kHz
FR DEAD TIME BLOCK (FRC PIN) High level voltage VHFRC 3.15 3.5 3.85 V Low level voltage VLFRC 0.9 1.0 1.2 V FRC charge current ICHGFRC 16 26 36 uA FRC discharge current IDCHGFRC 8 18 28 uA FRC dead band time1 tDFRC1 CFRC=1uF - 140 - ms FRC dead band time2 tDFRC2 CFRC=1uF - 100 - ms
CONTOROL INPUT BLOCK (FR, BR, DEC, N1, N2, S/S PIN) Input High level current IHIN VIN=4.5V,per each input 25 40 60 uA Input low level current ILIN VIN=0V,per each input - - 1 uA Pull-down resistance RIN - 110 - k
PIN OPERATIONAL CONDITIONS
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT HALLAMP INPUT (H1+, H1-, H2+, H2-, H3+, H3- PIN)
Hall Input Sensitivity VMIH Peak to peak 0.1 - - V Hall Input voltage range VICMIH 0 - 3.5 V
CONTOROL INPUT (FR, BR, DEC, N1, N2, S/S PIN) High level voltage VHIN 2 - 5 V Low level voltage VLIN 0 - 0.8 V
VERR INPUT (VERR PIN) Input voltage range VICMVERR 0 - 4.5 V
NJW4303
- 7 -
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 Block)
PWM 0% Sensory Voltage / PWM 100% Sensory Voltage Definition (Error Amplifier Block)
0V
V IN
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
t DFRC1 t DFRC2
ROTATING DIRECTION
RVS (REVERSE)
RVS
(REVERSE)
FWD (FORWARD)
STOP
STOP
3.5V
0V
VICMIH
V OSC
Time t t CHGOSC t
DCHGOSC
BOSC
V POSC
V
V VERR Full speed ( = PWM 100%)
stop ( = PWM 0%)
variable speed control V OSC
V VERR
V OSC
VIH
0V
3.5V
VHYSIH
LOGIC INVERSION LOGIC INVERSION
NJW4303
- 8 -
Sensing Voltage/ Reset Voltage Definition (Over Current Sensing Block)
Lock Protection Detection/ Reset Time Definition (Lock Protection Block)
Thermal Shutdown Operational Definition (Thermal Shutdown Block)
Under Voltage Protection Operational Definition (Under Voltage Protection Block)
170 C 85 C 150 C
TSD RESET TEMP (NORMAL
OPERATION)
HYSTERESIS TEMP
0 C TEMP 120 C
TSD OPERATING TEMP
(OUTPUT STOP)
35.0V UVLO RESET VOLTAGE(NORMAL OPERATION)
HYSTERESIS VOLTAGE
0V
VCC
9.0VUVLO2V
UVLO1V
UVLO OPERATING VOLTAGE(OUTPUT STOP)
VOSC
time
VDETLIMV ILIMIT
time
VOL(VUL,VVL,VWL) L ActiveActive
MotorAction STOP RotationRotation
time
VHCt
VLCt
VCt
timetDCt
tRCt
NJW4303
- 9 -
TRUTH TABLE INPUT VS OUTPUT TRUTH TABLE1 (DEC=L, H1+>H1-, H2+>H2-, H3+>H3-="H", Don't Care="X")
INPUT VS OUTPUT TRUTH TABLE2 (DEC=L, Invalid Code Pattern) (H1+>H1-, H2+>H2-, H3+>H3-="H", Don't Care="X")
H1 H2 H3 BR TSD UVLO S/S VERR FR DEC N1 N2 UH VH WH UL VL WL FG VREF COMMENTH H H LL L L Hi-ZH H H LL L L Hi-Z
L L ON Invalid Code PatternBR="H" BARKE OperationL L L LX L L L
Invalid Code Pattern
H X X X X
L L L ONL Hi-Z Hi-Z Hi-ZX L LXL X X X
H1 H2 H3 BR TSD UVLO S/S VERR FR DEC N1 N2 UH VH WH UL VL WL FG VREF COMMENTH L L Hi-Z Hi-Z L H L L LH H L Hi-Z Hi-Z L L H L Hi-ZL H L L Hi-Z Hi-Z L H L LL H H L Hi-Z Hi-Z L L H Hi-ZL L H Hi-Z L Hi-Z L L H LH L H Hi-Z L Hi-Z H L L Hi-ZH L L L Hi-Z Hi-Z L L H LH H L Hi-Z L Hi-Z L L H Hi-ZL H L Hi-Z L Hi-Z H L L LL H H Hi-Z Hi-Z L H L L Hi-ZL L H Hi-Z Hi-Z L L H L LH L H L Hi-Z Hi-Z L H L Hi-ZH L L Hi-Z Hi-Z L H L L LH H L Hi-Z Hi-Z L L H L Hi-ZL H L L Hi-Z Hi-Z L H L LL H H L Hi-Z Hi-Z L L H Hi-ZL L H Hi-Z L Hi-Z L L H LH L H Hi-Z L Hi-Z H L L Hi-ZH L L Hi-Z Hi-Z L LH H L Hi-Z Hi-Z L Hi-ZL H L L Hi-Z Hi-Z LL H H L Hi-Z Hi-Z Hi-ZL L H Hi-Z L Hi-Z LH L H Hi-Z L Hi-Z Hi-ZH L L Hi-Z Hi-Z L LH H L Hi-Z Hi-Z L Hi-ZL H L L Hi-Z Hi-Z LL H H L Hi-Z Hi-Z Hi-ZL L H Hi-Z L Hi-Z LH L H Hi-Z L Hi-Z Hi-ZH L L Hi-Z Hi-Z L LH H L Hi-Z Hi-Z L Hi-ZL H L L Hi-Z Hi-Z LL H H L Hi-Z Hi-Z Hi-ZL L H Hi-Z L Hi-Z LH L H Hi-Z L Hi-Z Hi-ZH L L LH H L Hi-ZL H L LL H H Hi-ZL L H LH L H Hi-ZH L L LH H L Hi-ZL H L LL H H Hi-ZL L H LH L H Hi-ZH L L LH H L Hi-ZL H L LL H H Hi-ZL L H LH L H Hi-ZH L L LH H L Hi-ZL H L LL H H Hi-ZL L H LH L H Hi-Z
LX FRC="L"FWD RotationONLL
L ON OVER CURRENTOperationX L L L L LX
L
L
X X
X
L
L
X
L L
H LH
L
H
H
X
ON
OFFOFF
HXX
X
X
LL
XH
L
X X
X
L
LL
L
L L
L
L L
ONL L LL L
L
L ON FR="L"FWD Rotation
X
L L
X
X
S/S="H"STOP Operation
UVLO=ONUVLO Operation
L OFF
OFFL
OFF
OFF
L
L
L
ON LOCK PROTECTIONOperation
TSD=ONTSD Operation
ON
BR="H"BRAKE OperationL L
X L L
ON
ON X X
L L L ON
FR="H"REV Rotation
L L
L
L
ON VERR="L"PWM Operation
L L L
L OFFOFF L L
L L
Hi-Z Hi-Z Hi-Z L L L
L
ON
Hi-Z Hi-Z Hi-Z
Hi-Z Hi-Z Hi-Z
L OFF
L
LOFFOFF
L L
X
OFF
NJW4303
- 10 -
INPUT VS OUTPUT TRUTH TABLE3 (DEC=H, H1+>H1-, H2+>H2-, H3+>H3-="H", Don't Care="X")
INPUT VS OUTPUT TRUTH TABLE4 (DEC=H, Invalid Code Pattern) (H1+>H1-, H2+>H2-,H3+>H3-="H", Don't Care="X")
H1 H2 H3 BR TSD UVLO S/S VERR FR DEC N1 N2 UH VH WH UL VL WL FG VREF COMMENTH L L Hi-Z Hi-Z L H L L Hi-ZH H L Hi-Z Hi-Z L L H L LH H H L Hi-Z Hi-Z L H L Hi-ZL H H L Hi-Z Hi-Z L L H LL L H Hi-Z L Hi-Z L L H Hi-ZL L L Hi-Z L Hi-Z H L L LH L L L Hi-Z Hi-Z L L H Hi-ZH H L Hi-Z L Hi-Z L L H LH H H Hi-Z L Hi-Z H L L Hi-ZL H H Hi-Z Hi-Z L H L L LL L H Hi-Z Hi-Z L L H L Hi-ZL L L L Hi-Z Hi-Z L H L LH L L Hi-Z Hi-Z L Hi-ZH H L Hi-Z Hi-Z L LH H H L Hi-Z Hi-Z Hi-ZL H H L Hi-Z Hi-Z LL L H Hi-Z L Hi-Z Hi-ZL L L Hi-Z L Hi-Z LH L L Hi-Z Hi-Z L Hi-ZH H L Hi-Z Hi-Z L LH H H L Hi-Z Hi-Z Hi-ZL H H L Hi-Z Hi-Z LL L H Hi-Z L Hi-Z Hi-ZL L L Hi-Z L Hi-Z LH L L Hi-Z Hi-Z L Hi-ZH H L Hi-Z Hi-Z L LH H H L Hi-Z Hi-Z Hi-ZL H H L Hi-Z Hi-Z LL L H Hi-Z L Hi-Z Hi-ZL L L Hi-Z L Hi-Z LH L L Hi-ZH H L LH H H Hi-ZL H H LL L H Hi-ZL L L LH L L Hi-ZH H L LH H H Hi-ZL H H LL L H Hi-ZL L L LH L L Hi-ZH H L LH H H Hi-ZL H H LL L H Hi-ZL L L LH L L Hi-ZH H L LH H H Hi-ZL H H LL L H Hi-ZL L L L
BR="H"BRAKE OperationL L L LL L L ONX H LXH X X X
L L ON TSD=ONTSD OperationHi-Z Hi-Z Hi-Z LX H L L
UVLO=ONUVLO Operation
L ON X X X
L L L ON
H
L Hi-Z Hi-ZL
ONL L Hi-Z Hi-Z L
Hi-Z
S/S="H"STOP Operation
L X ON X X
Hi-Z L L
L ON VERR="L"PWM Operation
L X X H X
L L L LX H
L ON OVER CURRENTOperation
L OFF OFF L L
L L L LX H
L ON LOCK PROTECTIONOperation
L OFF OFF L X
L L L LX HL OFF OFF L
L L ONH
FR="L"FWD RotationL H LH
FR="H"REV RotationH H
L ONL OFF OFF L
L OFF OFF L
X
X H
X
H1 H2 H3 BR TSD UVLO S/S VERR FR DEC N1 N2 UH VH WH UL VL WL FG VREF COMMENTH L H LL H L Hi-ZH L H LL H L Hi-Z
L L ON Invalid Code PatternBR="H" BARKE OperationL L L LX H L L
Invalid Code Pattern
H X X X X
L L L ONL Hi-Z Hi-Z Hi-ZX H LXL X X X
NJW4303
- 11 -
TIMING CHART
1. Normal Function PWM Function
0 60 120 180 240 300 360 420 480 540 600 660 720
H1
H2
H3
code 100 110 010 011 001 101 100 110 010 011 001 101
UH
VH
WH
UL
VL
WL
HALL INPUT
Hi-SIDE
LOW-SIDE
ELECTRIC DEGREE POSITION (deg)
Fullspeed (PWMDUTY=100%) Reduced Speed (PWMDUTY=70%)
VERR
OSC
TORQUE CONTROL INPUT
FR(=L)
FG
N1(=L)
N2(=L)
DEC(=L)
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
NJW4303
- 12 -
2. NORMAL FUNCTION FORWARD/REVERSE SWITCHING while rotating
0 60 120 180 240 300 360 420 480 540 600 660 720
H1
H2
H3
code 100 110 010
UH
VH
WH
UL
VL
WL
HALL INPUT
Hi-SIDE
LOW-SIDE
ELECTRIC DEGREE POSITION (deg)
FR=L FR=H
FRFORWARD/REVERS
INPUTFRC
FR=LDeadtime Deadtime
FG
N1(=L)
N2(=L)
DEC(=L)
010 110 100 101 001 011 011 001 101
NJW4303
- 13 -
3. NORMAL FUNCTION BRAKE CONTROL BRAKE RESET
0 60 120 180 240 300 360 420 480 540 600 660 720
ELECTRIC DEGREE POSITION (deg)
H1
H2
H3
code 100 110 010 011 001 101 100 110 010 011 001 101
UH
VH
WH
UL
VL
WL
HALL INPUT
Hi-SIDE
LOW-SIDE
motor rotate function BR=L
Brake function BR=H
BRBRAKE INPUT
Deadtime motor rotate function BR=L
Deadtime
FR(=L)
FG
N1(=L)
N2(=L)
DEC(=L)
NJW4303
- 14 -
4. NORMAL FUNCTION LOCK PROTECTION LOCK RESET
0 60 120 180 240 300 360 420 480 540 600 660 720
H1
H2
H3
code 100 110 010 011 001 101 100 110 010
UH
VH
WH
UL
VL
WL
HALL INPUT
HI-SIDE
LOW-SIDE
ELECTRIC DEGREE POSITION (deg)
motor rotate function
CT
011 011 011
CT PIN OUTPUT
Lock function motor rotate function
FR(=L)
FG
N1(=L)
N2(=L)
DEC(=L)
NJW4303
- 15 -
5. NORMAL FUNCTION LOW VOLTAGE PROTECTION NORMAL FUNCTION
0 60 120 180 240 300 360 420 480 540 600 660 720
H1
H2
H3
code 100 110 010 011 001 101 100 110 010 011 001 101
UH
VH
WH
UL
VL
WL
HALL INPUT
HI-SIDE
LOW-SIDE
ELECTRIC DEGREE POSITION (deg)
Fullspeed motor stop (UVLO ON)
VERR
OSC
TORQUECONTROLINPUT
Fullspeed
VCC
FR(=L)
FG
N1(=L)
N2(=L)
DEC(=L)
Hi-Z
Hi-Z
Hi-Z
NJW4303
- 16 -
6. NORMAL FUNCTION STOP FUNCTION (S/S=H) NORMAL FUNCTION
0 60 120 180 240 300 360 420 480 540 600 660 720
H1
H2
H3
code 100 110 010 011 001 101 100 110 010 011 001 101
UH
VH
WH
UL
VL
WL
HALL INPUT
HI-SIDE
LOW-SIDE
ELECTRIC DEGREE POSITION (deg)
Fullspeed motor stop (STOP ON)
VERR
OSC
TORQUECONTROLINPUT
Fullspeed
VCC
S/S
FR(=L)
FG
N1(=L)
N2(=L)
DEC(=L)
Hi-Z
Hi-Z
Hi-Z
NJW4303
- 17 -
7. SOFT START FUNCTION
0 60 120 180 240 300 360 420 480 540 600 660 720
H1
H2
H3
code 110 110 010 011 001 101 100 110 010 011 001 101
HALL INPUT
ELECTRIC DEGREE POSITION (deg)
OFF Full speed (no PWM)
VERR
OSC
DEC (=L)
VCC
Soft Start (PWM)
UH
VH
WH
UL
VL
WL
Hi-SIDE
LOW-SIDE
VERR
VREF
FR(=L)
FG
N1(=L)
N2(=L)
TORQUECONTROLINPUT
NJW4303
- 18 -
8. FG OUTPUT TIMING CHART
* 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.
H1
H2
H3
code 100 110 010 011 001 101 100 110 010 011 001101
HALL INPUTDEC=L or open(120 deg input mode)
ELECTRIC DEGREE POSITION (deg)
FG OUTPUT
0 60 120 180 240 300 360 420 480 540 600 660 720
N1=H, N2=H
N1=H, N2=L
N1=L, N2=H
N1=L, N2=L
OUTPUT TIMING CHART 1 (120 deg Input Mode)
0 60 120 180 240 300 360 420 480 540 600 660 720
H1
H2
H3
code 100 110 111 011 001 000 100 110 111 011 001 000
ELECTRIC DEGREE POSITION (deg)
N1=H, N2=H
N1=H, N2=L
N1=L, N2=H
N1=L, N2=L
HALL INPUTDEC=H(60 deg input mode)
FG OUTPUT
OUTPUT TIMING CHART 2 (60 deg Input Mode)
NJW4303
- 19 -
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 0.1 F to 10 F.
Symbol Formula Comments
Detect Time tDCt tDCt 4.6 106 CCt
Reset Time tRCt tRCt 0.46 106 CCt
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.
Reference Voltage Block – How to use VREF When using VREF pin, make sure that it is not oscillating. Use the recommended VCC operational condition.
Hall Amp Block - Capacitor Input from hall signal requires more than that of the Hall Input Sensitivity ( VMIH=100mV). 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 0.01 F between Hall input pins.
Hall Amp Block – How to use 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.
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, so that the calculation formula for oscillation frequency can be described in equation below: adjustment range for COSC is 330pF to 2200pF.
Symbol Formula Comments
Oscillation Frequency fOSC FOSC 28 10-6 / COSC
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 Dead Band Time1 tDFRC1 tDFRC1 140 103 CFRC FR : H L (open)
FR Dead Band Time2 tDFRC2 tDFRC2 140 103 CFRC FR : L (open) H
Figure4: Dead Band Time Calculating Formula
Figure3: Oscillation Frequency Calculating Formula
Figure1: Lock Protection Detect/ Reset Time Calculating Formula
Figure2: Hall IC application
10k10k
10k
Hall IC
Hall AmpBlock
20k
H1+/H2+/H3
H1- to H3-pin connecting
VREF
NJW4303
- 20 -
TYPICAL APPLICATION CIRCUIT 1
H1+
H2+
H3+
FRC
VREF
OSC
VERR
GND
ILIMIT
WL
VL
UL
WH
VH
UH
FR
BR
FG
H1-
H2-
H3-
S/S
N1
N2
DEC
VCC
N
N
SS
3Phase Motor
H
H
H
FG-OUT
+
VM
GND
+
CFRC
CVCCCVREF
COSC
Cct
RFG
Lowpass Filter
CVERR
+
+-
VREF UVLO
SawOscillator
+-
PWM Logic
LockDetect
TSD
+-
+-
+-
DeadTime
RotorPositionDecode
NJW4303
- 21 -
TYPICAL APPLICATION CIRCUIT 2
H1+
H2+
H3+
FRC
VREF
OSC
VERR
GND
ILIMIT
WL
VL
UL
WH
VH
UH
FR
BR
FG
H1-
H2-
H3-
S/S
N1
N2
DEC
VCC
N
N
SS
3Phase Motor
H
H
H
FG-OUT
+
VM
GND
+
CFRC
CVCCCVREF
COSC
Cct
RFG
Lowpass Filter
CVERR
+
+-
VREF UVLO
SawOscillator
+-
PWM Logic
LockDetect
TSD
+-
+-
+-
DeadTime
RotorPositionDecode
Comparator
FG-IN
V-IN Ct
V-FG
<Reference Value>C1=22nFR1=10kΩR2=40kΩR3=10kΩD1:1S2076COMP1:NJM2903
C1
R1
D1
R2
R3
COMP1
+
+
NJW4303
- 22 -
TYPICAL CHARACTERISTICS
VCC vs ICC
0
1
2
3
4
5
6
7
8
9
10
0 5 10 15 20 25 30 35 40
VCC[V]
ICC [m
A]
Tj=25[oC]
VCC vs VREF
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
0 5 10 15 20 25 30 35 40
VCC[V]
VR
EF[V
]
Tj=25[oC]IVREF=1[mA]
IREF vs VREF
4.50
4.60
4.70
4.80
4.90
5.00
5.10
5.20
5.30
5.40
5.50
0 5 10 15 20 25 30
IREF[mA]
VR
EF[V
]
Tj=25[oC]VCC=24[V]
IOH vs VOLH
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0 5 10 15 20 25 30 35 40 45
IOH [mA]
VO
LH[V
]
Tj=25[oC]VCC=24[V]
IOLSINK vs VOLL
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0 5 10 15 20 25 30 35 40 45
IOLSINK[mA]
VO
LL[V
]
Tj=25[oC]VCC=24[V]
IOLSOURCE vs VOHL
9.0
9.2
9.4
9.6
9.8
10.0
10.2
10.4
10.6
10.8
11.0
0 5 10 15 20 25 30 35 40 45
IOLSOURCE[mA]
VO
HL[
V]
Tj=25[oC]VCC=24[V]
NJW4303
- 23 -
TYPICAL CHARACTERISTICS
VCC vs VOHL
5
6
7
8
9
10
11
12
13
14
15
5 10 15 20 25 30 35 40
VCC[V]
VO
HL
[V]
Tj=25[oC]IOLSOURCE=0.1[mA]
IFG vs VFGL
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0 2 4 6 8 10 12 14 16
IFG[mA]
VF
GL[
V]
Tj=25[oC]VCC=24[V]
VCt vs ICHGCt
2.50
3.00
3.50
4.00
4.50
5.00
5.50
6.00
6.50
7.00
7.50
8.00
8.50
9.00
0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00
VCt[V]
I CH
GC
t [uA
]
Tj=25[oC]VCC=24[V]
VCt vs IDCHGCt
0.25
0.30
0.35
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00
VCt[V]
I DC
HG
Ct [
uA]
Tj=25[oC]VCC=24[V]
VOSC vs ICHGOSC
48.5
49.0
49.5
50.0
50.5
51.0
51.5
52.0
1.00 1.50 2.00 2.50 3.00 3.50
VOSC[V]
I CH
GO
SC[u
A]
Tj=25[oC]VCC=24[V]
VOSC vs IDCHGOSC
0.0
0.5
1.0
1.5
2.0
2.5
1.00 1.50 2.00 2.50 3.00 3.50
VOSC[V]
I DC
HG
OS
C[m
A]
Tj=25[oC]VCC=24[V]
NJW4303
- 24 -
TYPICAL CHARACTERISTICS
VCC vs fOSC
27.0
27.5
28.0
28.5
29.0
29.5
30.0
5 10 15 20 25 30 35 40
VCC[V]
f OS
C[k
Hz]
Tj=25[oC]COSC=1000[pF]
VFRC vs ICHGFRC
16
18
20
22
24
26
28
30
32
34
36
0.0 1.0 2.0 3.0 4.0 5.0
VFRC[V]
I CH
GFR
C[u
A]
Tj=25[oC]VCC=24[V]
VFRC vs IDCHGFRC
8
10
12
14
16
18
20
22
24
26
28
0.0 1.0 2.0 3.0 4.0 5.0
VFRC[V]
I DC
HG
FR
C[u
A]
Tj=25[oC]VCC=24[V]
Ct vs tCHGCt
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0.1 1.0 10.0Ct [uF]
tCH
GC
t [ms]
Tj=25[oC]VCC=24[V]
Ct vs tDCHGCt
0
5
10
15
20
25
30
35
40
45
50
0.1 1.0 10.0Ct [uF]
tDC
HG
Ct [m
s]
Tj=25[oC]VCC=24[V]
COSC vs fOSC
1
10
100
1000
100 1000 10000
COSC[pF]
fOSC
[kH
z]
Tj=25[oC]VCC=24[V]
NJW4303
- 25 -
TYPICAL CHARACTERISTICS
CFRC vs fDFRC1
0
200
400
600
800
1000
1200
1400
1600
1800
2000
0 2 4 6 8 10 12
CFRC[uF]
fDFR
C1 [m
s]
Tj=25[oC]VCC=24[V]
CFRC vs fDFRC2
0
200
400
600
800
1000
1200
1400
1600
1800
2000
0 2 4 6 8 10 12
CFRC[uF]fD
RC
2 [ms]
Tj=25[oC]VCC=24[V]
Tj vs ICC1
0
2
4
6
8
10
12
-50 -25 0 25 50 75 100 125 150
Tj [oC]
I CC
1 [m
A]
VCC=12[V]
Tj vs ICC2
0
2
4
6
8
10
12
-50 -25 0 25 50 75 100 125 150Tj [oC]
I CC
2 [m
A]
VCC=24[V]
Tj vs VUVLO1
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
-50 -25 0 25 50 75 100 125 150
Tj [oC]
VU
VLO
1 [V
]
VCC Decreasing
Tj vs VUVLO2
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
-50 -25 0 25 50 75 100 125 150Tj [oC]
VU
VLO
2 [V
]
VCC Increasing
NJW4303
- 26 -
TYPICAL CHARACTERISTICS
Tj vs VREF
4.5
4.6
4.7
4.8
4.9
5.0
5.1
5.2
5.3
5.4
5.5
-50 -25 0 25 50 75 100 125 150
Tj [oC]
VR
EF [V
]
VCC=24[V]IVREF=1[mA]
Tj vs IBIH
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
-50 -25 0 25 50 75 100 125 150Tj [oC]
I BIH
[nA
]
VCC=24[V]
Tj vs VOLH
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
-50 -25 0 25 50 75 100 125 150
Tj [oC]
VO
LH [V
]
VCC=24[V]IOH=30[mA]
Tj vs VOHL
8.0
8.5
9.0
9.5
10.0
10.5
11.0
-50 -25 0 25 50 75 100 125 150
Tj [oC]
VO
HL2
[V]
VCC=24[V]IOLSOURCE=30[mA]
Tj vs VOLL
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
-50 -25 0 25 50 75 100 125 150
Tj [oC]
VO
LL [V
]
VCC=24[V]IOLSINK=30[mA]
Tj vs VHYSIH
10
15
20
25
30
35
40
45
50
-50 -25 0 25 50 75 100 125 150Tj [oC]
DVH
YS
IH [m
V]
VCC=24[V]
NJW4303
- 27 -
TYPICAL CHARACTERISTICS
Tj vs VFGL
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
-50 -25 0 25 50 75 100 125 150
Tj [oC]
VFG
L [V
]
VCC=24[V]IFG=10[mA]
Tj vs VDETLIM
0.225
0.235
0.245
0.255
0.265
0.275
-50 -25 0 25 50 75 100 125 150Tj [oC]
VD
ET
LIM
[V]
VCC=24[V]
Tj vs ICHGOSC
30
35
40
45
50
55
60
65
70
-50 -25 0 25 50 75 100 125 150
Tj [oC]
I CH
GO
SC
[uA
]
VCC=24[V]VOSC=2.5[V]
Tj vs IDCHGOSC
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
-50 -25 0 25 50 75 100 125 150Tj [oC]
I DC
HG
OS
C [m
A]
VCC=24[V]VOSC=2.5[V]
Tj vs fOSC
20
22
24
26
28
30
32
34
-50 -25 0 25 50 75 100 125 150Tj [oC]
f OSC
[kH
z]
VCC=24[V]COSC=1000[pF]
Tj vs RIN
0
50
100
150
200
250
-50 -25 0 25 50 75 100 125 150Tj [oC]
RIN
[koh
m]
VCC=24[V]
NJW4303
- 28 -
TYPICAL CHARACTERISTICS
[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.
Tj vs VHCt
3.30
3.35
3.40
3.45
3.50
3.55
3.60
3.65
3.70
3.75
3.80
-50 -25 0 25 50 75 100 125 150
Tj [oC]
VH
Ct [V
]
VCC=24[V]
Tj vs VLCt
0.90
0.95
1.00
1.05
1.10
1.15
1.20
1.25
1.30
-50 -25 0 25 50 75 100 125 150
Tj [oC]
VLC
t [V
]
VCC=24[V]
Tj vs ICHGCt
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
-50 -25 0 25 50 75 100 125 150
Tj [oC]
I CH
GC
t [uA
]
VCC=24[V]VCt=2.5[V]
Tj vs IDCHGCt
0.25
0.30
0.35
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
-50 -25 0 25 50 75 100 125 150
Tj [oC]
I DC
HG
Ct [u
A]
VCC=24[V]VCt=2.5[V]