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| NJM2375/A POWER FACTOR CONTROLLER GENERAL DESCRIPTION The NJM2375/A are active power factor controllers, which limit the harmonic current resulting from the power supply block of electrical devices. They include a startup timer, an one quadrant multiplier, a zero current detector to ensure critical condition operation, a transconductance error amplifier, high precision reference, a current sensing comparator, and a totem pole output ideally suited for driving a power MOSFET. They also contain protection circuits for overvoltage, cycle-by-cycle overcurrent, and maximum peak current. The startup threshold of NJM2375A is lower than that of NJM2375. PACKAGE OUTLINE NJM2375D/AD NJM2375M/AM NJM2375V/AV FEATURES Overvoltage Comparator Eliminates Runaway Output Voltage Internal Quick Start Internal Startup Timer One Quadrant Multiplier Zero Current Detector High Precision Reference (2%) Totem Pole Output with High State Clamp Undervoltage Lockout (Startup Threshold/NJM2375:13V typ., NJM2375A:10.4V typ.) Low Startup and Operating Current Bipolar Technology Package Outline DIP8,DMP8,SSOP14,SIP8 NJM2375L/AL PIN CONFIGURATION PIN FUNCTION 1. VFB 2. COMP 3. MULT 4. CSENSE 5. DZERO 6. GND 7. DRIVE 8. V+ NJM2375D/AD NJM2375M/AM NJM2375L/AL PIN FUNCTION 1. MULT 2. NC 3. CSENSE 4. NC 5. DZERO 6. NC 7. GND NJM2375V/AV 8. DRIVE 9. NC 10. V+ 11. NC 12. VFB 13. NC 14. COMP Ver.2003-07-18 -1- NJM2375/A BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS PARAMETER Total Power Supply and Zener Current Output Current (Source or Sink) (Ta=25C) SYMBOL ICC+IZ IO VIN IIN PD RATINGS 30 500 -1.0 to +10 UNIT mA mA V Current Sense, Multiplier, and Voltage Feedback Inputs Zero Current Detect Input High State Forward Current Low state Forward Current Power Dissipation 50 -10 (DIP8) (DMP8) (SIP8) 500 300 700 mA mW (SSOP14) 300 Operating Temperature Range Storage Temperature Range TOPR TSTG -40 to +85 -50 to +150 C C -2- Ver.2003-07-18 NJM2375/A ELECTRICAL CHARACTERISTICS (V+=12V*1, Ta=25C) ERROR AMPLIFIER PARAMETER Voltage Feedback input Threshold 1 Voltage Feedback input Threshold 2 Line Regulation Input Bias Current Transconductance Output Current (Source) Output Current (Sink) Output Voltage Swing 1 Output Voltage Swing 2 SYMBOL VFB1 VFB2 RegLine IIB gm IOSO IOSI VOH(ea) VOL(ea) VFB=2.3V VFB=2.7V VFB=2.3V (High State) VFB=2.7V (Low State) V =12V V =28V V =12 to 28V VFB=0V + + + TEST CONDITION MIN. 2.465 2.440 80 5.8 - TYP. 2.500 2.500 1.0 -0.1 100 10 10 6.4 1.7 MAX. 2.535 2.540 10 -0.5 130 2.4 UNIT V V mV A mho A A V V OVERVOLTAGE COMPARATOR PARAMETER Voltage Feedback Input Threshold SYMBOL VFB(0V) TEST CONDITION MIN. 1.065 xVFB TYP. 1.080 xVFB MAX. 1.095 xVFB UNIT V MULTIPLIER PARAMETER Input Bias Current Input Threshold Dynamic Input Voltage Range SYMBOL IIB Vth(M) VPIN3 VPIN2 TEST CONDITION VFB=0V(FB Pin) (FB Pin) Multiplier Input Pin Compensation Pin MIN. 1.05VOL x(EA) 0 to 2.5 Vth(M) to Vth(M) +1.0V 0.43 TYP. -0.1 1.20VOL x(EA) 0 to 3.5 Vth(M) to Vth(M) +1.5V 0.65 MAX. -0.5 UNIT A V V V Multiplier Gain* 2 K Vmp=0.5V, Vcomp=Vth(M)+1.0V 0.87 mho ZERO CURRENT DETECTOR PARAMETER Input Threshold Voltage Hysteressis Input Clamp Voltage SYMBOL Vth VH VIH VIL + + TEST CONDITION V Increasing V Decreasing High State (IDET=+3.0mA) Low State (IDET=-3.0mA) MIN. 1.33 100 5.20 0.30 TYP. 1.60 200 5.80 0.70 MAX. 1.87 300 1.00 UNIT V mV V V Ver.2003-07-18 -3- NJM2375/A ELECTRICAL CHARACTERISTICS (V+=12V*1, Ta=25C) CURRENT SENSING COMPARATOR PARAMETER Input Bias Current Input Offset Voltage Maximum Current Sense 3 Input Threshold * Delay to Output SYMBOL IIB VIO Vth(MAX) tPHL TEST CONDITION Isence=0V Vcompe=1.10V, VM=0V MIN. 1.30 TYP. -0.15 9.0 1.50 200 MAX. -1.0 25.0 1.80 UNIT A mV V nS DRIVE OUTPUT PARAMETER Output Voltage Low State Output Voltage High State Output Voltage High State Output Voltage Rise Time Output Voltage Fall Time Output Voltage with UVLO Activated SYMBOL VOL1 VOL2 VOH1 VOH2 VC(MAX) tr tf VC(UVLO) TEST CONDITION Isink=20mA Isink=200mA Isource=20mA Isource=200mA Isource=20mA + CL=15pF, V =30V CL=1.0nF CL=1.0nF V =7V, Isink=1.0mA + MIN. 9.8 7.8 14 - TYP. 0.3 2.4 10.3 8.4 16 100 50 0.1 MAX. 0.8 3.3 18 150 120 0.5 UNIT V V V V V nS nS V RESTART TIMER PARAMETER Restart Time Delay SYMBOL tDLY TEST CONDITION MIN. 200 TYP. 620 MAX. UNIT S -4- Ver.2003-07-18 NJM2375/A ELECTRICAL CHARACTERISTICS (V+=12V*1, Ta=25C) UNDERVOLTAGE LOCKOUT PARAMETER (NJM2375) Startup Threshold Minimum Operating Voltage After Turn-On Hysteresis (NJM2375A) Startup Threshold Minimum Operating Voltage After Turn-On Hysteresis Vth(on) Vshutdown VH V Increasing V Decreasing + + SYMBOL + + TEST CONDITION MIN. TYP. MAX. UNIT Vth(on) Vshutdown VH V Increasing V Decreasing 11.5 7.0 3.8 9.4 6.8 1.4 13.0 8.0 5.0 10.4 7.8 2.6 14.5 9.0 6.2 11.4 8.8 3.8 V V V V V V TOTAL DEVICE PARAMETER Power Supply Current Startup Operating Dynamic Operating Power Supply Zener Voltage* 4 SYMBOL + TEST CONDITION MIN. TYP. MAX. UNIT ICC1 ICC2 ICC3 VZ V =7.0V 50kHz, CL=1.0nF ICC=25mA 30 0.25 6.5 9.0 36 0.4 12 20 - mA mA mA V NOTES *1 : Adjust V+ above the startup threshold before setting to 12V. Vth(max) *2 : K= VM x(Vcomp - Vth(M)) *3 : This parameter is measured with VFB=0V,and VM=3.0V. *4 : Do not supply higher voltage above the zener voltage to 8pin, because the internal zener diode protects the IC from surge. Ver.2003-07-18 -5- NJM2375/A TYPICAL APPLICATIONS -6- Ver.2003-07-18 NJM2375/A TYPICAL CHARACTERISTICS Current Sense Input Threshold vs. Multiplier Input 1.6 1.4 Current Sense Threshold 1.2 1 0.8 0.6 0.4 0.2 0 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 PIN2=2.25V PIN2=3.75V PIN2=3.5V PIN2=3.25V PIN2=3.0V PIN2=2.5V (V =12V,Ta=25) + Current Sense Input Threshold vs. Multiplier Input (Expanded View) (V+ =12V,Ta=25) 0.08 0.07 Current Sense Threshold PIN2=3.75V PIN2=3.5V PIN2=2.75V 0.06 0.05 0.04 0.03 0.02 0.01 PIN2=3.25V PIN2=3.0V PIN2=2.75V PIN2=2.5V PIN2=2.25V PIN2=2.0V 0 -0.2 -0.1 0 0.1 0.2 Multiplier Input Voltage ( Multiplier Input Voltage Supply Current vs. Supply Voltage (NJM2375) (VFB=0V,C L=1nF,f=50kHz,Ta=25) 30 Supply Current vs. Supply Voltage (NJM2375A) (VFB=0V,C L=1nF,f=50kHz,Ta=25) 30 Supply Current cc 25 20 15 10 5 0 Supply Current Icc (mA) 25 20 15 10 5 0 0 5 10 15 20 25 30 Supply Voltage (V) 35 40 0 5 10 15 20 25 30 Supply Voltage 35 40 Drive Output Voltage vs. Output Current (V+ =12V,Ta=25) 12 Drive Output Waveform Output Voltage V 10 8 6 4 2 0 VOL VOH 0 0.1 0.2 0.3 Output Current (A 0.4 Ver.2003-07-18 -7- NJM2375/A TYPICAL CHARACTERISTICS Voltage Feedback Input Threshold Change vs. Temperature (V+=12V) Temperature (V 12V) Overvoltage Input Threshold Overvoltage vs. Temperature 110 109 108 107 106 105 (V+ =12V) Voltage Feedback Threshold Change Voltage Feedback Input Threshold Change VV FB (V) 2.54 2.52 2.5 2.48 2.46 -50 -25 0 25 50 75 100 125 150 Ambient Temperature -50 -25 0 25 50 75 100 125 150 Ambient Temperature Ta Quickstart Charge Current I Quickstart Charge Voltage 1.8 Quickstart Charge Voltage Current Quickstart Charge VoltageCurrent vs.Temperature (V (V+=12V) vs. Temperature + =12V) Restart Timer Deley vs. Temperature 600 700 (V+ =12V) 1.7 400 Restart Timer Delay (uS) 1.75 Voltage 500 600 500 1.65 Current 300 400 1.6 -50 -25 0 25 50 200 75 100 125 150 300 -50 -25 0 25 50 75 100 125 150 Ambient Temperature Ambient Temperature Undervoltage Lockout Thresholds vs. Temperature 14 NJM2375 Zero Current Detector Input Threshold Voltage vs. Temperature (V+=12V) 1.8 1.7 1.6 1.5 1.4 Lower Threshold ,Decreasing Upper Threshold ,Increasing Supply Voltage V+ (V) 12 Startup Threshold ,Increasing) NJM2375A 10 NJM2375 8 NJM2375A Minimum Opearting Threshold,Decreasing Threshold Voltage 1.3 1.2 -50 -25 0 25 50 75 100 125 150 Ambient Temperature 6 -50 -25 0 25 50 75 100 125 150 Ambient Temperature Ta () -8- Ver.2003-07-18 NJM2375/A [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. Ver.2003-07-18 -9- |
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