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| NJM2625 PWM TYPE 3-PHASE DC BRUSHLESS MOTOR CONTOROL IC sGENERAL DESCRIPTION The NJM2625 is a 3 phase DC brush-less motor driver IC with PWM control. It incorporates hall amplifiers, PWM control circuits, totem-pole pre drivers for external power MOS transistors. current limit and frequency generator circuit. The NJM2625 easily implements speed control and rotation direction control for DC motor application. sPACKAGE OUTLINE NJM2625D NJM2625M sFEATURES *Operating Voltage *Pre-Driver Circuit *Current Limit Sense Voltage *Internal Oscillator *Forward or Reverse Direction *FG Signal Output *Internal Soft Start *Internal ON/OFF Circuit *Bipolar Technology *Package Outline V+=8V to 18V Iout=+50mA/-150mA MAX. Current limit=0.5V10% Frequency control for external capacitor Output frequency to hall frequency External capacitor to Verr pin. No-output is Verr pin to GND. DIP20, DMP20 sPIN CONFIGRATION 1 2 3 4 5 6 7 20 19 18 17 16 15 14 13 12 8 9 10 PIN FUNCTION 11.GND 1.FG 12.ILIMIT 2.Vref 3.H1+ 13.WL 4.H114.VL 5.H2+ 15.UL 6.H216.WH 7.H3+ 17.VH 8.H318.UH 9.Verr 19.V+ 10.OSC 20.F/R 11 NJM2625D NJM2625M Ver 1.0 - 1 - NJM2625 sBLOCK DIAGRAM 20.F/R V+ 3.H1+ 4.H1Rotor 5.H2+ 6.H27.H3+ 8.H3V+ 19.V+ Position Decode 16.WH 17.VH 18.UH 2.Vref Vref UVLO 13.W L 10.OSC Saw Oscillator PWM COMP Logic 14.VL 9.Verr 1.FG FG 15.UL 11.GND 12.ILIMIT -2- NJM2625 sABSOLUTE MAXIMUM RATINGS (Ta=25C) PARAMETER SYMBOL Maximum Supply Voltage V+ Power Dissipation PD Operating Temperature Range Storage Temperature Range Topr Tstg RATINGS 20 (DIP20) 700 (DMP20) 350 -40 +85 -50 +150 UNIT V mW C C sELECTRICAL CHARACTERISTICS (V+=12V, Ct=1000pF, Cref=1F, Ta=25C) Total Device PARAMETER SYMBOL TEST CONDITIONS MIN. Supply Voltage Under Voltage Sense Voltage (Under Voltage Lock Out) Hysteresis Voltage (Under Voltage Lock Out) Supply Current V + TYP. 7.25 0.5 15.0 MAX. 18.0 7.50 0.6 22.0 UNIT V V V mA 8.0 Output Enable V+ Increasing 7.00 0.4 RL= PWM Duty=50% - UVLO UVLO Icc Hall Sensor Section PARAMETER Hysteresis Voltage Input Common mode Voltage range Input Bias Current Output Section PARAMETER Output Voltage 1 Output Voltage 2 Over Current Sense Section PARAMETER Sense Voltage Input Voltage Range Input Bias Current Oscillator Section PARAMETER Oscillation Frequency Oscillate Fluctuations (Line Regulation) PWM0% Sense Voltage PWM100% Sense Voltage Saw Wave Peak Voltage Saw Wave Bottom Voltage SYMBOL Vhys Vicm IB TEST CONDITIONS RL=470 RL=470 MIN. 1.5 - TYP. 30 - MAX. 10.5 600 UNIT mV V nA SYMBOL Voh Vol TEST CONDITIONS Isource=50mA Isink=150mA MIN. 10 - TYP. 10.3 1.5 MAX. 2.0 UNIT V V SYMBOL Vth Vip IIB TEST CONDITIONS MIN. 0.45 - TYP. 0.50 -0.9 MAX. 0.55 3.0 -5.0 UNIT V V A SYMBOL fosc fosc/V PWM0 PWM1 Vpfosc Vbfosc TEST CONDITIONS MIN. 20 TYP. 25 0.01 5.00 0.65 MAX. 30 5.00 0.35 5.25 0.80 UNIT kHz % V V V V V+=8V to 18V PWM DUTY=0% PWM DUTY=100% 5.40 4.75 0.50 -3- NJM2625 sELECTRICAL CHARACTERISTICS (V+=12V, Ct=1000pF, Cref=1F, Ta=25C) FG Output Section PARAMETER Saturation Voltage Pull-Up Resistance Error Amplifier Section PARAMETER Input Offset Voltage Input Offset Current Input Bias Current Input Common mode Voltage range Reference Voltage Section PARAMETER Output Voltage Line Regulation Road Regulation SYMBOL FGV FGR TEST CONDITIONS MIN. 8 TYP. 0.3 10 MAX. 0.5 12 UNIT V k SYMBOL Vio Iio Iibrr Vicmrr TEST CONDITIONS MIN. 0 TYP. 7 8.0 -46 - MAX. Vref UNIT mV nA nA V SYMBOL Vref VrefLI VrefLO TEST CONDITIONS Iref=1.0mA V+=8V to 18V Iref=1.0mA to 20.0mA MIN. 6.00 - TYP. 6.40 1.5 150 MAX. 6.80 25 250 UNIT V mV mV Forward or Reverse Direction Section PARAMETER SYMBOL Forward Direction Reverse Direction Hysteresis Voltage VF VR VFR TEST CONDITIONS RL=470 RL=470 RL=470 MIN. V -2 + TYP. 0.5 MAX. V 2 + UNIT V V V (note) Output switch tests are performed under pulsed conditions to minimize power dissipation. sFG Output Input H2 L L H H H L FG Output H L H L H L 1 2 3 4 5 6 H1 H H H L L L H3 H L L L H H sF/R Input Pin This pin does not include neither pull up resistance nor pull down resistance. Terminal Voltage L input H input Direction F R -4- NJM2625 sTYPICAL APPLICATION 20.F/R V + Vm 16.WH 3.H1+ 4.H15.H2+ 6.H27.H3+ 8.H3+ H1 Rotor Position H2 Decode Motor H3 V + 17.VH N S N S 19.V 18.UH 2.Vref Vref UVLO 10.OSC Saw Oscillator PW M COMP Logic 13.W L 14.VL 9.Verr 1.FG FG 15.UL 11.GND 12.ILIMIT * A rotation direction change must be made after motor stopped completely. * When PWM duty is extremely small, two or more switching elements cannot be driven entirely. In such case, switching elements will generate excess heat and it may cause destruction of the switching devices. Therefore, extensive heat evaluation is necessary for switching device selection particularly in consideration of the area of safety operation (ASO). -5- NJM2625 sTYPICAL CHARACTERISTICS Reference Voltage vs. Reference Voltage Output Current (V+=12V,Ta=25c) 8 Reference Voltage Vref (V) Reference Voltage vs. Supply Voltage (Ta=25 c) Reference Voltage Vref (V) 7 6 5 4 3 2 1 0 6 4 2 0 0 4 8 12 + 16 (V) 20 0 10 20 30 40 50 60 Supply Voltage V Reference Voltage Output Current Iref (mA) 28 Oscillate Frequency fosc (kHz) Oscillate Frequency vs. Supply Voltage (Ct=1000pF,Ta=25 c ) Supply Current I CC (mA) 16 Supply Current vs. Supply Voltage (Ct=1000pF,Verr=3V,RL= ,Ta=25 c ) 27.5 27 26.5 26 25.5 25 5 10 15 20 Supply Voltage V+ (V) Output1 vs. Output Current (V+=12V,Ct=1000pF,Verr=5.2V,Ta=25 c ) 12 8 4 0 0 5 10 15 20 Supply Voltage V+ (V) 12 Output1 Voltage Voh (V) 4 Output Voltage 2 Vol (V) Output Voltage 2 vs. Output Current (V+=12V,Ct=1000pF,Verr=5.2V,Ta=25c ) 11 10 9 8 WL UH 3 UH 2 WL 1 7 6 0 100 200 300 400 500 Output Current Isource (mA) 0 0 100 200 300 400 Output Current Isource (mA) -6- NJM2625 sTYPICAL CHARACTERISTICS Oscillation frequency f OSC (kHz) 100 Oscillation frequency vs. Timing Capacitor (V+=12V,Ta=25 c ) 5 Saturation Voltage FGV (V) FG Saturation Voltage vs. Output Current (V+=12V,Ta=25 c ) 4 3 2 1 0 10 1 0.1 100 1000 10000 100000 0 1 2 3 4 5 6 Timing Capacitor CT (pF) Output Current FGI (mA) Reference Voltage vs. Temperature (V+=12V,Iref=1mA) Reference Voltage Vref (V) 12 Supply Current Icc (mA) Supply Current vs. Temperature + (V =12V,Ct=1000pF,Verr=3V,RL= ) 6.8 6.6 6.4 11 10 9 8 -50 -25 0 25 50 75 100 125 150 Temperature Ta ( c ) Sense Voltage vs. Temperature (V+=12V) 0.54 6.2 6 -50 -25 0 25 50 75 100 125 150 Temperature Ta ( c ) Oscillation Frequency vs. Temperature (V+=12V,Ct=1000pF) 35 Oscillation Frequency fosc (kHz) Sense Voltage Vth (V) 0.53 0.52 0.51 0.5 0.49 0.48 -50 -25 0 25 50 75 100 125 150 Temperature Ta ( c ) 30 25 20 15 -50 -25 0 25 50 75 100 125 150 Temperature Ta ( c ) -7- NJM2625 MEMO The specifications on this data book are only given for information, without any guarantee as regards either mistakes or omissions. The application circuit in this data book 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. -8- |
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