NJM2625 PWM TYPE 3-PHASE DC BRUSHLESS MOTOR CONTOROL IC ♦GENERAL DESCRIPTION ♦PACKAGE OUTLINE 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 NJM2625D NJM2625M (V+=8V to 18V) (Iout=+50mA/-150mA MAX.) (Current limit=0.5V±10%) (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 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 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 NJM2625D NJM2625M Ver 1.0 - 1 - NJM2625 ♦BLOCK DIAGRAM 20.F/R V+ 3.H1+ 16.WH 4.H1Rotor 5.H2+ Position 6.H2- Decode 17.VH r 7.H3+ 8.H3V+ 19.V + 2.Vref 18.UH Vref UVLO 13.WL 10.OSC Saw Oscillator PWM COMP Logic 14.VL 9.Verr 1.FG 11.GND -2- FG 15.UL 12.ILIMIT NJM2625 ♦ABSOLUTE MAXIMUM RATINGS (Ta=25°C) 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 ♦ELECTRICAL CHARACTERISTICS (V+=12V, Ct=1000pF, Cref=1µF, Ta=25°C) 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 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 V + UVLO Output Enable V+ Increasing ∆UVLO Icc SYMBOL Vhys Vicm RL=∞ PWM Duty=50% TEST CONDITIONS RL=470Ω RL=470Ω IB SYMBOL Voh Vol SYMBOL TEST CONDITIONS Isource=50mA Isink=150mA TEST CONDITIONS UNIT V mW °C °C TYP. MAX. UNIT 8.0 - 18.0 V 7.00 7.25 7.50 V 0.4 0.5 0.6 V - 15.0 22.0 mA MIN. TYP. MAX. UNIT 1.5 30 - 10.5 mV V - - 600 nA MIN. TYP. MAX. UNIT 10 - 10.3 1.5 2.0 V V MIN. TYP. MAX. UNIT Sense Voltage Vth 0.45 0.50 0.55 V Input Voltage Range Input Bias Current Vip IIB - -0.9 3.0 -5.0 V µA MIN. TYP. MAX. UNIT 20 25 30 kHz - 0.01 5.00 % 5.40 4.75 0.50 5.00 0.65 0.35 5.25 0.80 V V V V Oscillator Section PARAMETER Oscillation Frequency Oscillate Fluctuations (Line Regulation) PWM0% Sense Voltage PWM100% Sense Voltage Saw Wave Peak Voltage Saw Wave Bottom Voltage SYMBOL TEST CONDITIONS fosc ? fosc/? V PWM0 PWM1 Vpfosc Vbfosc V+=8V to 18V PWM DUTY=0% PWM DUTY=100% -3- NJM2625 ♦ELECTRICAL CHARACTERISTICS (V+=12V, Ct=1000pF, Cref=1µF, Ta=25°C) FG Output Section PARAMETER TEST CONDITIONS SYMBOL Saturation Voltage Pull-Up Resistance FGV FGR Error Amplifier Section PARAMETER TEST CONDITIONS SYMBOL Input Offset Voltage Input Offset Current Input Bias Current Input Common mode Voltage range Vio Iio Iibrr Vicmrr Reference Voltage Section PARAMETER TEST CONDITIONS SYMBOL Output Voltage Line Regulation Road Regulation Vref ? VrefLI ? VrefLO Iref=1.0mA V+=8V to 18V Iref=1.0mA to 20.0mA Forward or Reverse Direction Section PARAMETER SYMBOL Forward Direction Reverse Direction Hysteresis Voltage VF VR ? VFR TEST CONDITIONS RL=470Ω RL=470Ω RL=470Ω MIN. TYP. MAX. UNIT 8 0.3 10 0.5 12 V kΩ MIN. TYP. MAX. UNIT 0 7 8.0 -46 - Vref mV nA nA V MIN. TYP. MAX. UNIT 6.00 - 6.40 1.5 150 6.80 25 250 V mV mV MIN. TYP. MAX. UNIT + V -2 - 0.5 V 2 - (note) Output switch tests are performed under pulsed conditions to minimize power dissipation. ♦FG Output 1 2 3 4 5 6 H1 H H H L L L Input H2 L L H H H L H3 H L L L H H FG Output H L H L H L ♦F/R Input Pin This pin dose not include neither pull up resistance nor pull down resistance. Terminal Voltage L input H input -4- Direction F R + V V V NJM2625 ♦TYPICAL APPLICATION 20.F/R + V 16.WH 3.H1+ 4.H1- H1 Rotor 5.H2+ 6.H2- Position Decode H2 r 7.H3+ 8.H3- Vm Motor S 17.VH H3 V N + N + 19.V S 18.UH 2.Vref Vref 10.OSC UVLO 13.WL Saw Oscillator PWM COMP Logic 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. Supply Voltage (Ta=25°c ) 7 Reference Voltage Vref (V) 8 Reference Voltage Vref (V) Reference Voltage vs. Reference Voltage Output Current (V+=12V,Ta=25°c ) 6 4 2 6 5 4 3 2 1 0 0 0 4 8 12 16 20 0 + 28 Oscillate Frequency vs. Supply Voltage (Ct=1000pF,Ta=25°c ) 27.5 27 26.5 26 25.5 50 60 12 8 4 10 15 0 20 5 Output1 vs. Output Current (V =12V,Ct=1000pF,Verr=5.2V,Ta=25°c ) 15 20 4 Output Voltage 2 Vol (V) 11 10 UH 8 WL 7 Output Voltage 2 vs. Output Current (V =12V,Ct=1000pF,Verr=5.2V,Ta=25°c ) + + 9 10 Supply Voltage V+ (V) + Supply Voltage V (V) Output1 Voltage Voh (V) 40 0 5 3 UH 2 WL 1 0 6 0 100 200 300 400 Output Current Isource (mA) -6- 30 Supply Current vs. Supply Voltage (Ct=1000pF,Verr=3V,RL=∞ ,Ta=25°c ) 16 25 12 20 Reference Voltage Output Current Iref (mA) Supply Current ICC (mA) Oscillate Frequency fosc (kHz) Supply Voltage V (V) 10 500 0 100 200 300 Output Current Isource (mA) 400 NJM2625 ♦TYPICAL CHARACTERISTICS Saturation Voltage FGV (V) Oscillation frequency fOSC (kHz) 100 Oscillation frequency vs. Timing Capacitor (V+=12V,Ta=25 °c ) 10 1 0.1 100 5 FG Saturation Voltage vs. Output Current + (V =12V,Ta=25 °c ) 4 3 2 1 0 1000 10000 100000 0 1 2 3 4 5 Output Current FGI (mA) Timing Capacitor CT (pF) Reference Voltage vs. Temperature + (V =12V,Iref=1mA) 6.8 Supply Current vs. Temperature∞ (V =12V,Ct=1000pF,Verr=3V,RL= ) + Reference Voltage Vref (V) Supply Current Icc (mA) 12 11 10 9 6.6 6.4 6.2 6 -50 -25 8 75 °c 100 125 150 Temperature Ta ( ) Sense Voltage vs. Temperature + (V =12V) 0.54 0 25 0.53 0.52 0.51 0.5 0.49 0.48 0 25 50 75 100 125 150 Temperature Ta (°c ) 50 35 Oscillation Frequency fosc (kHz) -50 -25 Sense Voltage Vth (V) 6 Oscillation Frequency vs. Temperature + (V =12V,Ct=1000pF) 30 25 20 15 -50 -25 0 25 50 75 100 125 150 Temperature Ta ( °c ) -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-