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| NJM2625 PWM TYPE 3-PHASE DC BRUSHLESS MOTOR CONTOROL IC GENERAL DESCRIPTION The NJM2625 is a 3-phase DC brush-less motor control 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. FEATURES *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 PACKAGE OUTLINE NJM2625D NJM2625M (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 PIN CONFIGRATION 1 2 3 4 5 6 7 20 19 18 17 16 15 14 13 12 8 9 10 PIN FUNCTION 1.FG 11.GND 12.ILIMIT 2.Vref 3.H1+ 13.WL 14.VL 4.H15.H2+ 15.UL 16.WH 6.H217.VH 7.H3+ 8.H318.UH 9.Verr 19.V+ 10.OSC 20.F/R 11 NJM2625D NJM2625M Ver 1.0 - 1 - NJM2625 BLOCK DIAGRAM 20.F/R V+ 3.H1+ 4.H1Rotor 5.H2+ 6.H27.H3+ 8.H3V+ 19.V + Position Decode r 16.WH 17.VH 18.UH 2.Vref Vref UVLO 13.WL 10.OSC Saw Oscillator PWM COMP Logic 14.VL 9.Verr 1.FG FG 15.UL 11.GND 12.ILIMIT -2- NJM2625 ABSOLUTE 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 ELECTRICAL 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 V+=8V to 18V PWM DUTY=0% PWM DUTY=100% MIN. 20 5.40 4.75 0.50 TYP. 25 0.01 5.00 0.65 MAX. 30 5.00 0.35 5.25 0.80 UNIT kHz % V V V V -3- NJM2625 ELECTRICAL 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. FG 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 F/R Input Pin This pin dose not include neither pull up resistance nor pull down resistance. Terminal Voltage L input H input Direction F R -4- NJM2625 TYPICAL APPLICATION 20.F/R V + Vm 16.WH 3.H1+ 4.H15.H2+ 6.H27.H3+ 8.H3+ H1 Rotor Position H2 Decode r H3 V + Motor 17.VH N S 18.UH S N 19.V 2.Vref Vref UVLO 10.OSC Saw Oscillator PWM COMP Logic 13.WL 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 TYPICAL CHARACTERISTICS Reference Voltage vs. Reference Voltage Output Current (V+=12V,Ta=25c ) 7 Reference Voltage Vref (V) 0 4 8 12 + 8 Reference Voltage Vref (V) Reference Voltage vs. Supply Voltage (Ta=25c ) 6 5 4 3 2 1 0 6 4 2 0 16 20 Supply Voltage V (V) 0 10 20 30 40 50 60 Reference Voltage Output Current Iref (mA) Oscillate Frequency fosc (kHz) 28 27.5 27 26.5 26 25.5 25 Oscillate Frequency vs. Supply Voltage (Ct=1000pF,Ta=25c ) Supply Current ICC (mA) 16 Supply Current vs. Supply Voltage (Ct=1000pF,Verr=3V,RL= ,Ta=25c ) 12 8 4 0 5 10 15 + 20 0 5 10 15 20 Supply Voltage V (V) Output1 vs. Output Current (V =12V,Ct=1000pF,Verr=5.2V,Ta=25c ) + Supply Voltage V+ (V) Output Voltage 2 vs. Output Current (V =12V,Ct=1000pF,Verr=5.2V,Ta=25c ) + 12 Output1 Voltage Voh (V) 11 10 9 8 4 Output Voltage 2 Vol (V) 3 UH UH 2 WL 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 TYPICAL CHARACTERISTICS 100 Oscillation frequency f SC O (kHz) Oscillation frequency vs. Timing Capacitor (V+=12V,Ta=25 c ) Saturation Voltage FGV (V) 1000 10000 100000 5 4 3 2 1 0 FG Saturation Voltage vs. Output Current + (V =12V,Ta=25 c ) 10 1 0.1 100 0 Timing Capacitor CT (pF) 1 2 3 4 5 Output Current FGI (mA) 6 Supply Current Icc (mA) Reference Voltage Vref (V) 12 11 Supply Current vs. Temperature (V =12V,Ct=1000pF,Verr=3V,RL= ) + Reference Voltage vs. Temperature + (V =12V,Iref=1mA) 6.8 6.6 6.4 6.2 6 10 9 8 -50 -25 75 c 100 125 150 Temperature Ta ( ) Sense Voltage vs. Temperature + (V =12V) 0 25 50 -50 -25 0 25 50 75 100 125 150 Temperature Ta (c ) Oscillation Frequency vs. Temperature + (V =12V,Ct=1000pF) 0.54 Sense Voltage Vth (V) 0.53 0.52 0.51 0.5 0.49 0.48 35 Oscillation Frequency fosc (kHz) 30 25 20 15 -50 -25 0 25 50 75 100 125 150 -50 -25 0 25 50 75 100 125 150 Temperature Ta ( c ) 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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