PWM Three-Phase DC Brushless Motor Controller: Three-Phase ... · NJW4303 - 1 - PWM 3-PHASE DC...

NJW4303

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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


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

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3. NORMAL FUNCTION BRAKE CONTROL BRAKE RESET

0 60 120 180 240 300 360 420 480 540 600 660 720


H1

H2

H3

code 100 110 010 011 001 101 100 110 010 011 001 101

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

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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


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

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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


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

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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


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

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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


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

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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)


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


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

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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.


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.


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 -


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 -


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 -


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 -


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 -


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 -


[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]

Date post:	02-Jan-2020
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