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 NJM2375L/AL 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 PIN CONFIGURATION NJM2375D/AD NJM2375M/AM NJM2375V/AV Ver.2003-07-18 NJM2375L/AL PIN FUNCTION 1. MULT 2. NC 3. CSENSE 4. NC 5. DZERO 6. NC 7. GND PIN FUNCTION 1. VFB 2. COMP 3. MULT 4. CSENSE 5. DZERO 6. GND 7. DRIVE 8. V+ 8. DRIVE 9. NC 10. V+ 11. NC 12. VFB 13. NC 14. COMP -1- NJM2375/A BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS (Ta=25C) PARAMETER SYMBOL RATINGS UNIT ICC+IZ 30 mA Output Current (Source or Sink) IO 500 mA Current Sense, Multiplier, and Voltage Feedback Inputs VIN -1.0 to +10 V IIN 50 mA Total Power Supply and Zener Current Zero Current Detect Input High State Forward Current Low state Forward Current Power Dissipation -10 PD (DIP8) 500 (DMP8) 300 mW (SSOP14) 300 (SIP8) 700 Operating Temperature Range TOPR -40 to +85 C Storage Temperature Range TSTG -50 to +150 C -2- Ver.2003-07-18 NJM2375/A ELECTRICAL CHARACTERISTICS (V+=12V*1, Ta=25C) ERROR AMPLIFIER PARAMETER SYMBOL Voltage Feedback input Threshold 1 VFB1 Voltage Feedback input Threshold 2 VFB2 Line Regulation RegLine MIN. TYP. MAX. UNIT + TEST CONDITION 2.465 2.500 2.535 V + 2.440 2.500 2.540 V + V =12 to 28V - 1.0 10 mV VFB=0V - -0.1 -0.5 A 80 100 130 mho V =12V V =28V Input Bias Current IIB Transconductance gm Output Current (Source) IOSO VFB=2.3V - 10 - A Output Current (Sink) IOSI VFB=2.7V - 10 - A Output Voltage Swing 1 VOH(ea) VFB=2.3V (High State) 5.8 6.4 - V Output Voltage Swing 2 VOL(ea) VFB=2.7V (Low State) - 1.7 2.4 V MIN. TYP. MAX. UNIT 1.065 xVFB 1.080 xVFB 1.095 xVFB V MIN. TYP. MAX. UNIT - -0.1 -0.5 A OVERVOLTAGE COMPARATOR PARAMETER Voltage Feedback Input Threshold SYMBOL TEST CONDITION VFB(0V) MULTIPLIER PARAMETER Input Bias Current SYMBOL IIB TEST CONDITION VFB=0V(FB Pin) Input Threshold Vth(M) (FB Pin) 1.05VOL x(EA) 1.20VOL x(EA) - V Dynamic Input Voltage Range VPIN3 Multiplier Input Pin 0 to 2.5 0 to 3.5 - V VPIN2 Compensation Pin Vth(M) to Vth(M) +1.0V Vth(M) to Vth(M) +1.5V - V K Vmp=0.5V, Vcomp=Vth(M)+1.0V 0.43 0.65 0.87 mho 2 Multiplier Gain* ZERO CURRENT DETECTOR PARAMETER Input Threshold Voltage SYMBOL Vth MIN. TYP. MAX. UNIT + TEST CONDITION 1.33 1.60 1.87 V + V Increasing Hysteressis VH V Decreasing 100 200 300 mV Input Clamp Voltage VIH High State (IDET=+3.0mA) 5.20 5.80 - V VIL Low State (IDET=-3.0mA) 0.30 0.70 1.00 V Ver.2003-07-18 -3- NJM2375/A ELECTRICAL CHARACTERISTICS (V+=12V*1, Ta=25C) CURRENT SENSING COMPARATOR PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Input Bias Current IIB Isence=0V - -0.15 -1.0 A Input Offset Voltage VIO Vcompe=1.10V, VM=0V - 9.0 25.0 mV Vth(MAX) 1.30 1.50 1.80 V tPHL - 200 - nS MIN. TYP. MAX. UNIT Maximum Current Sense 3 Input Threshold * Delay to Output DRIVE OUTPUT PARAMETER Output Voltage Low State Output Voltage High State SYMBOL TEST CONDITION VOL1 Isink=20mA - 0.3 0.8 V VOL2 Isink=200mA - 2.4 3.3 V VOH1 Isource=20mA 9.8 10.3 - V VOH2 Isource=200mA 7.8 8.4 - V Isource=20mA + CL=15pF, V =30V 14 16 18 V Output Voltage High State VC(MAX) Output Voltage Rise Time tr CL=1.0nF - 100 150 nS Output Voltage Fall Time tf CL=1.0nF - 50 120 nS - 0.1 0.5 V MIN. TYP. MAX. UNIT 200 620 - S Output Voltage with UVLO Activated VC(UVLO) + V =7V, Isink=1.0mA RESTART TIMER PARAMETER Restart Time Delay -4- SYMBOL tDLY TEST CONDITION Ver.2003-07-18 NJM2375/A ELECTRICAL CHARACTERISTICS (V+=12V*1, Ta=25C) UNDERVOLTAGE LOCKOUT PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT + 11.5 13.0 14.5 V + 7.0 8.0 9.0 V 3.8 5.0 6.2 V + 9.4 10.4 11.4 V + 6.8 7.8 8.8 V 1.4 2.6 3.8 V MIN. TYP. MAX. UNIT - 0.25 0.4 mA - 6.5 12 mA - 9.0 20 mA 30 36 - V (NJM2375) Startup Threshold Vth(on) Minimum Operating Vshutdown Voltage After Turn-On Hysteresis V Increasing V Decreasing VH (NJM2375A) Startup Threshold Vth(on) Minimum Operating Voltage After Turn-On Hysteresis Vshutdown V Increasing V Decreasing VH TOTAL DEVICE PARAMETER SYMBOL TEST CONDITION Power Supply Current Startup ICC1 Operating ICC2 Dynamic Operating 4 Power Supply Zener Voltage* + V =7.0V ICC3 50kHz, CL=1.0nF VZ ICC=25mA 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 Current Sense Input Threshold vs. Multiplier Input (Expanded View) (V+ =12V,Ta=25) + (V =12V,Ta=25) 1.6 0.08 PIN2=3.75V 1.2 PIN2=3.5V PIN2=2.75V PIN2=3.25V PIN2=3.0V 1 PIN2=2.5V 0.8 0.6 0.4 PIN2=2.25V 0.2 0.06 0.5 1 1.5 2 2.5 3 3.5 PIN2=3.0V 0.05 PIN2=2.75V 0.04 PIN2=2.25V 0.03 0.02 0 0 0 -0.2 4 -0.1 0 0.1 0.2 Multiplier Input Voltage ( Multiplier Input Voltage Supply Current vs. Supply Voltage (NJM2375) Supply Current vs. Supply Voltage (NJM2375A) (VFB=0V,C L=1nF,f=50kHz,Ta=25) (VFB=0V,C L=1nF,f=50kHz,Ta=25) 30 30 25 25 Supply Current cc Supply Current Icc (mA) PIN2=2.5V PIN2=3.25V 0.01 PIN2=2.0V -0.5 PIN2=3.75V 0.07 PIN2=3.5V Current Sense Threshold Current Sense Threshold 1.4 20 15 10 5 0 20 15 10 5 0 0 5 10 15 20 25 30 Supply Voltage (V) 35 40 Drive Output Voltage vs. Output Current 0 5 10 15 20 25 30 Supply Voltage 35 40 Drive Output Waveform (V+ =12V,Ta=25) Output Voltage V 12 10 VOH 8 6 4 2 VOL 0 0 Ver.2003-07-18 0.1 0.2 0.3 Output Current (A 0.4 -7- NJM2375/A Voltage Feedback Input Threshold Change + vs. Temperature =12V) Temperature (V(V12V) Overvoltage vs. Temperature (V+ =12V) 110 2.54 Overvoltage Input Threshold Voltage Feedback Change Voltage FeedbackThreshold Input Threshold Change VV FB (V) TYPICAL CHARACTERISTICS 2.52 2.5 2.48 2.46 109 108 107 106 105 -50 -25 0 25 50 75 100 125 150 -50 -25 Voltage 1.75 600 500 1.7 400 1.65 300 Current 1.6 -50 -25 0 25 50 200 75 100 125 150 Undervoltage Lockout Thresholds vs. Temperature 14 600 500 400 -50 -25 Startup Threshold ,Increasing) NJM2375A 10 NJM2375 8 NJM2375A Minimum Opearting Threshold,Decreasing 6 25 50 75 100 125 150 Ambient Temperature Ta () -8- 0 25 50 75 100 125 150 Ambient Temperature Zero Current Detector Input Threshold Voltage vs. Temperature (V+=12V) 1.8 Threshold Voltage Supply Voltage V+ (V) 0 100 125 150 300 NJM2375 -50 -25 75 (V+ =12V) 700 Ambient Temperature 12 50 Restart Timer Deley vs. Temperature Restart Timer Delay (uS) 1.8 Quickstart VoltageCurrent QuickstartCharge Charge Voltage Current + vs.Temperature (V+(V =12V) =12V) vs. Temperature 25 Ambient Temperature Ta Quickstart Charge Current I Quickstart Charge Voltage Ambient Temperature 0 1.7 Upper Threshold ,Increasing 1.6 1.5 1.4 Lower Threshold ,Decreasing 1.3 1.2 -50 -25 0 25 50 75 100 125 150 Ambient Temperature 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-