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| FAN7528 Dual Output Critical Conduction Mode PFC Controller March 2006 FAN7528 Dual Output Critical Conduction Mode PFC Controller Features Low Total Harmonic Distortion (THD) Dual Output Voltage Control Precise Adjustable Output Over Voltage Protection Open-feedback Protection and Disable Function Zero Current Detector 160s Internal Start-up Timer MOSFET Over Current Protection Under Voltage Lock Out with 3.5V Hysteresis Low Start-up (40A) and Operating Current (1.5mA) Totem Pole Output with High State Clamp 400mA Peak Gate Drive Current 8-pin DIP or 8-pin SOP Description The FAN7528 is an active power factor correction (PFC) controller for boost PFC applications which operates in the critical conduction mode (CRM). It uses the voltage mode PWM that compares an internal ramp signal with the error amplifier output to generate MOSFET turn-off signal. Because the voltage mode CRM PFC controller does not need the rectified AC line voltage information, it can save the power loss of the input voltage sensing network that is necessary for the current mode CRM PFC controller. The FAN7528 provides the dual output voltage control function without the AC line voltage sensing for adapter applications. It changes the PFC output voltage according to the AC line voltage. It provides many protection functions such as over voltage protection, open-feedback protection, over current protection and under voltage lock out protection. The FAN7528 can be disabled if the INV pin voltage is lower than 0.45V and then the operating current decreases to 65A. Using a new variable on-time control method, THD is lower than the conventional CRM boost PFC ICs. Applications Adapter Related Application Notes AN6012: Design of Power Factor Correction Circuit Using FAN7528 Ordering Information Part Number FAN7528N FAN7528M FAN7528MX Operating Temp. Range -40C to +125C -40C to +125C -40C to +125C Pb-Free Yes Yes Yes Package 8-DIP 8-SOP 8-SOP Packing Method Rail Rail Tape & Reel Marking Code FAN7528 FAN7528 FAN7528 (c)2006 Fairchild Semiconductor Corporation 1 www.fairchildsemi.com FAN7528 Rev. 1.0.4 FAN7528 Dual Output Critical Conduction Mode PFC Controller Typical Application Diagrams L D Vo AC In VAUX NAUX RZCD R2 ZCD Co Vcc FAN7528 MOT CS COMP R1 GND INV Figure 1. Typical Boost PFC Application Internal Block Diagram Vcc 8 UVLO 2.5V Ref Internal Bias Vref Vcc 12V 8.5V Disable 160s Timer Drive Output 13V 7 OUT ZCD 5 6.7V 1.4V 1.5V Zero Current Detector S Q R OVP 2.66V 2.55V CS 4 40k 8pF 0.8V Ramp Signal Disable OCP Comparator 0.45V 0.35V Vcc=8.5V Reference Set Vcc=4.5V Reference Reset 1V Offset MOT 3 Saw Tooth Generator Error Amplifier Gm Dual Output Reference Generator 1.5V/2.5V 1V~5V Range 1 INV 6 2 GND COMP Figure 2. Functional Block Diagram of FAN7528 2 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller Pin Assignments Vcc 8 OUT 7 GND 6 ZCD 5 WWW FA N 7528 1 2 3 4 INV COMP MOT CS Figure 3. Pin Configuration (Top View) Pin Definitions Pin Number 1 Pin Name INV Pin Function Description This pin is the inverting input of the error amplifier. The output voltage of the boost PFC converter should be resistively divided to 2.5V at the high line condition and connected to this pin. If this pin voltage is controlled to be lower than 0.45V, the device is disabled. This pin is the output of the transconductance error amplifier. Some components for the output voltage compensation should be connected between this pin and GND. This pin is used to set the slope of the internal ramp. The voltage of this pin is maintained to be 1V. If a resistor is connected between this pin and GND, current flows out of the pin and the slope of the internal ramp is proportional to this current. This pin is the input of the over current protection comparator. The MOSFET current is sensed using a sensing resistor and the resulting voltage is applied to this pin. An internal RC filter is included to filter switching noise. This pin is sensitive to the negative voltage below -0.3V. For proper operation, the stray inductance in the sensing path and the inductance of the sensing resistor must be minimized. This pin is the input of the zero current detection block. If the voltage of this pin goes higher than 1.5V and then goes lower than 1.4V, the MOSFET is turned on. This pin is used for the ground potential of all the pins. For proper operation, the signal ground and the power ground should be separated. This pin is the gate drive output. The peak sourcing and sinking current level is 400mA. For proper operation, the stray inductance in the gate driving path must be minimized. This pin is the IC supply pin. IC current and MOSFET drive current are supplied using this pin. 2 3 COMP MOT 4 CS 5 6 7 ZCD GND OUT 8 Vcc 3 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller Absolute Maximum Ratings (TA = 25C unless otherwise specified) Parameter Supply Voltage Peak Drive Output Current Driver Output Clamping Diodes Vo > Vcc or Vo < -0.3V Detector Clamping Diodes Error Amp, MOT, CS Input Voltages Operating Junction Temperature Operating Temperature Range Storage Temperature Range ESD Capability, HBM Model (All pins except Vcc) ESD Capability, Machine Model Symbol Vcc IOH, IOL Iclamp Idet Vin Tj Topr Tstg Value 23 400 10 10 -0.3 to 6 150 -40 to 125 -65 to 150 2.0 300 Unit V mA mA mA V C C C kV V Thermal Impedance Parameter Thermal Resistance, Junction to Ambient 8-DIP 8-SOP Symbol Rja Value 110 150 Unit C/W C/W Note: 1. Regarding the test environment and PCB type, please refer to JESD51-2 and JESD51-10. 4 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller Electrical Characteristics (Vcc = 14V, TA = -40C~125C, unless otherwise specified) Parameter Under Voltage Lock Out Section Start Threshold Voltage Stop Threshold Voltage UVLO Hysteresis Supply Current Section Start-up Supply Current Operating Supply Current Dynamic Operating Supply Current Operating Current at Disable Error Amplifier Section Voltage Feedback Input Threshold1 Voltage Feedback Input Threshold2 Line Regulation Temperature Stability Input Bias Current Output Source Current Output Sink Current Output Upper Clamp Voltage Zero Duty Cycle Output Voltage Transconductance(1) Output Voltage Selection Threshold Output Voltage Reset Threshold(1) of Vref1(1) Vref1 Vref2 Vref1 Vref3 Ib(ea) Isource Isink Veao(H) Veao(Z) gm Vth(in) Vth(reset) TA = 25C Vinv = 1V~4V Vinv = 2.4V Vinv = 2.6V Vcc = 14V~23V Ta = 25C 2.465 2.435 1.45 - - -0.5 - - 4.5 0.7 90 1.24 3 2.5 2.5 1.5 0.1 20 - -12 12 5.5 1 115 1.3 4.5 2.535 2.565 1.55 10 - 0.5 - - 6.5 1.3 140 1.36 6 V V V mV mV A A A V V mho V V Ist Icc Idcc Icc(dis) Vcc = Vth(start) - 0.2V Output no switching 50kHz, Cl=1nF Vinv = 0V - - - 40 40 1.5 2.5 65 70 3 4 90 A mA mA A Vth(start) Vth(stop) HY(uvlo) Vcc increasing Vcc decreasing 11 8 3 12 8.5 3.5 13 9 4 V V V Symbol Condition Min. Typ. Max. Unit Maximum On-Time Section Maximum On-time Voltage Maximum On-time Programming Current Sense Section Current Sense Input Threshold Voltage Limit Input Bias Current Current Sense Delay to Output(1) Vcs(limit) Ib(cs) Td(cs) Vcs = 0V~1V 0.7 -1 - 0.8 -0.1 350 0.9 1 500 V A ns Vmot Ton-max Rmot = 13.7k Rmot = 13.7k, TA = 25C 0.95 18 1 22.5 1.05 27 V s 5 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller Electrical Characteristics (Continued) (Vcc = 14V, TA = -40C~125C, unless otherwise specified) Parameter Zero Current Detection Section Input Voltage Threshold(1) Detect Hysteresis(1) Input High Clamp Voltage Input Low Clamp Voltage Input Bias Current Source Current Capability(1) Sink Current Capability(1) Maximum Delay from ZCD to Output Turn-on(1) Output Section Output Voltage High Output Voltage Low Rising Time(1) Falling Time(1) Maximum Output Voltage Output Voltage with UVLO Activated Restart Timer Section Restart Timer Delay Over Voltage Protection Section OVP Threshold Voltage OVP Hysteresis Enable Section Enable Threshold Voltage Enable Hysteresis Symbol Vth(ZCD) HY(ZCD) Vclamp(h) Vclamp(l) Ib(ZCD) Isource(zcd) Isink(zcd) Tdead Condition Min. 1.35 0.05 Typ. 1.5 0.1 6.7 0.6 -0.1 - - - Max. 1.65 0.15 7.4 1 1 -10 10 200 Unit V V V V A mA mA ns Idet = 3mA Idet = -3mA VZCD = 1V~5V 6 0 -1 - - 100 Voh Vol Tr Tf Vo(max) Vo(uvlo) td(rst) Vovp HY(ovp) Vth(en) HY(en) Io = -100mA Io = 100mA Cl = 1nF Cl = 1nF Vcc = 20V, Io = 100A Vcc = 5V, Io = 100A 9.2 - - - 11.5 - 40 11 1 50 50 13 - 160 2.66 0.11 0.45 0.1 12.8 2.5 100 100 14.5 1 360 2.72 0.16 0.5 0.15 V V ns ns V V s V V V V TA = 25C 2.6 0.06 0.4 0.05 Note: 1. These parameters, although guaranteed by design, are not tested in mass production. 6 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller Typical Performance Characteristics Start Threshold Voltage 12.8 9.2 Stop Threshold Voltage 12.4 Vth(start) (V) Vth(stop) (V) -40 8.8 12.0 8.4 11.6 8.0 11.2 -60 -20 0 20 40 60 80 Temperature (C) 100 120 140 7.6 -60 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 Figure 4. Start Threshold Voltage vs. Temp. Figure 5. Stop Threshold Voltage vs. Temp. 4.0 UVLO Hysteresis 70 60 Start-up Supply Current 3.8 50 HY(uvlo) (V) Ist (A) -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 3.6 40 30 20 3.2 10 3.0 -60 0 -60 3.4 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 Figure 6. UVLO Hysteresis vs. Temp. Operating Supply Current Figure 7. Start-up Supply Current vs. Temp. Dynamic Operating Supply Current 3.0 2.5 2.0 1.5 1.0 0.5 0.0 -60 4.0 3.5 3.0 Idcc (mA) Icc (mA) 2.5 2.0 1.5 1.0 0.5 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 0.0 -60 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 Figure 8. Operating Supply Current vs. Temp. Figure 9. Dynamic Operating Current vs. Temp. 7 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller Typical Performance Characteristics (Continued) Operating Current at Disable 2.56 2.54 2.52 Vref1 (V) 70 2.50 2.48 50 2.46 2.44 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 -60 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 90 Voltage Feedback Input Threshold1 80 Icc(dis) (A) 60 40 -60 Figure 10. Icc at Disable vs. Temp. Voltage Feedback Input Threshold2 1.54 0.4 Figure 11. Vref1 vs. Temp. Input Bias Current 1.52 Ib(ea) (A) -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 Vref2 (V) 0.2 1.50 0.0 1.48 -0.2 1.46 -60 -0.4 -60 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 Figure 12. Vref2 vs. Temp. Output Source Current -6 Figure 13. Input Bias Current vs. Temp. Output Sink Current 18 -9 Isource (A) 15 -12 Isink (A) -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 12 -15 9 -18 6 -60 -60 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 Figure 14. Error Amp. Source Current vs. Temp. Figure 15. Error Amp. Sink Current vs. Temp. 8 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller Typical Performance Characteristics (Continued) Output Upper Clamp Voltage 6.5 1.3 1.2 6.0 Veao(H) (V) 1.1 5.5 Veao(Z) (V) 1.0 0.9 5.0 0.8 4.5 -60 0.7 -60 Zero Duty Cycle Output Voltage -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 Figure 16. Error Amp. Clamp Voltage vs. Temp. Output Voltage Selection Threshold 1.36 Figure 17. Zero Duty Output Voltage vs. Temp. Maximum On-Time Voltage 1.04 1.34 1.32 Vth(in) (V) 1.30 1.28 1.26 0.96 1.24 -60 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 -60 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 Vmot (V) 1.02 1.00 0.98 Figure 18. Output Select Threshold vs. Temp. Maximum On-Time Programming 26 Figure 19. MOT pin Voltage vs. Temp. Current Sense Input Threshold Voltage 0.88 Ton-max (s) Vcs(limit) (V) -40 24 0.84 22 0.80 0.76 20 0.72 18 -60 -20 0 20 40 60 80 Temperature (C) 100 120 140 -60 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 Figure 20. Maximum On-time vs. Temp. Figure 21. Current Limit vs. Temp. 9 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller Typical Performance Characteristics (Continued) Input Bias Current 0.9 0.6 7.0 Vclamp(h) (V) Ib(cs) (A) 0.3 0.0 -0.3 -0.6 6.2 -0.9 -60 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 6.0 -60 6.8 6.6 6.4 7.4 7.2 Input High Clamp Voltage -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 Figure 22. CS Input Bias Current vs. Temp. Input Low Clamp Voltage 1.0 Figure 23. ZCD Input High Clamp vs. Temp. Input Bias Current 0.8 0.8 0.4 Vclamp(l) (V) 0.6 Ib(ZCD) (A) -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 0.0 0.4 -0.4 0.2 -0.8 0.0 -60 -60 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 Figure 24. ZCD Input Low Clamp vs. Temp. Output Voltage High Figure 25. ZCD Input Bias Current vs. Temp. Output Voltage Low 2.5 12.5 12.0 11.5 Voh (V) 11.0 10.5 10.0 9.5 -60 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 0.0 -60 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 Vol (V) 2.0 1.5 1.0 0.5 Figure 26. Output Voltage High vs. Temp. Figure 27. Output Voltage Low vs. Temp. 10 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller Typical Performance Characteristics (Continued) Maximum Output Voltage 14.5 14.0 13.5 13.0 12.5 12.0 11.5 -60 1.0 Output Voltage with UVLO Activated 0.8 Vo(uvlo) (V) -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 Vo(max) (V) 0.6 0.4 0.2 0.0 -60 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 Figure 28. Maximum Output Voltage vs. Temp. Restart Time Delay 400 Figure 29. Output Voltage when UVLO vs. Temp. OVP Threshold Voltage 2.74 350 2.72 300 Td(rst) (s) 250 200 150 100 50 -60 Vovp (V) 2.70 2.68 2.66 2.64 2.62 2.60 -60 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 Figure 30. Restart Timer Delay vs. Temp. OVP Hysteresis 0.14 Figure 31. Over Voltage Protection vs. Temp. Enable Threshold Voltage 0.50 0.48 0.12 HY(ovp) (V) Vth(en) (V) 0.46 0.10 0.44 0.08 0.42 0.06 -60 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 0.40 -60 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 Figure 32. OVP Hysteresis vs. Temp. Figure 33. Enable Threshold Voltage vs. Temp. 11 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller Typical Performance Characteristics (Continued) Enable Hysteresis 0.14 0.12 HY(en) (V) 0.10 0.08 0.06 -60 -40 -20 0 20 40 60 80 Temperature (C) 100 120 140 Figure 34. Enable Hysteresis vs. Temp. 12 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller Applications Information 1. Error Amplifier Block The error amplifier block has several functions such as dual output function, over voltage protection function and disable function. 1.2 Over Voltage Protection Function The control speed of the PFC converter is very slow, therefore the over voltage protection of the output voltage is very important. The FAN7528 provides a precise OVP function that shuts down the drive circuit when the INV pin voltage exceeds 2.66V,. and there is 0.11V hysteresis. 1.1 Dual Output Function Unlike conventional CRM PFC controllers, the FAN7528 has the dual output control function according to the AC line voltage without sensing the rectified AC line voltage. Because the output voltage of the boost converter is proportional to the peak voltage of the input AC line voltage before the boost converter starts switching, the INV pin voltage represents the peak AC line voltage. When the AC line is connected to the boost converter, Vcc voltage starts to increase from zero voltage. If the Vcc voltage reaches 8.5V, the dual output reference generator compares the INV pin voltage with 1.3V reference and if the INV pin voltage is lower than 1.3V the dual output reference generator sets the reference voltage of the error amplifier to be 1.5V. If the INV pin voltage is higher than 1.3V, the reference voltage is set to be 2.5V. That means if the output voltage of the boost converter is set to be 400V at high line, the output voltage is 240V(400V*1.5/ 2.5) at low line. If the output voltage is set to be 390V at high line, the output voltage is 234V at low line. Because this block does not need the input voltage sensing network, the power loss and cost related with the sensing network can be saved. The reference voltage of the error amplifier is not reset until the Vcc voltage goes below 4.5V. 2.66V 2.55V OVP 1.3 Disable Function If the INV pin voltage is lower than 0.45V, most of the internal block is disabled and the operating current is reduced to be 65A, and there is 0.1V hysteresis in the comparator. 1.4 Error Amplifier The error amplifier is a transconductance type amplifier. The output current of the amplifier is proportional to the voltage difference between the inverting input and the non inverting input of the amplifier. Some resistors and capacitors should be connected to the error amplifier output pin, the COMP pin, for the output voltage loop compensation. 2. Zero Current Detection Block The zero current detector(ZCD) generates the turn-on signal of the MOSFET when the boost inductor current reaches zero using an auxiliary winding coupled with the inductor. If the voltage of the ZCD pin goes higher than 1.5V then the ZCD comparator waits until the voltage goes below 1.4V. If the voltage goes below 1.4V, the zero current detector turns on the MOSFET. The ZCD pin is protected internally by two clamps, 6.7V high clamp and 0.6V low clamp. The 160us timer generates a MOSFET turn-on signal if the drive output has been low for more than 160s from the falling edge of the drive output. Disable 0.45V 0.35V Dual Output Reference Generator Error Amp Gm Vout Vin ZCD 5 6.7V 1.4V 1.5V Zero Current Detector Turn-on 160s Signal Timer RZCD S Q R 1.5V/2.5V 1 INV 2 COMP Figure 36. Zero Current Detector Block Figure 35. Error Amplifier Block 13 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller 3. Saw Tooth Generator Block The output of the error amplifier and the output of the saw tooth generator are compared to determine the MOSFET turn-off instance. The slope of the saw tooth is determined by an external resistor connected to the MOT pin. The voltage of the MOT pin is 1V and the slope is proportional to the current flowing out of the MOT pin. The internal ramp signal has 1V offset, therefore the drive output is shut down if the voltage of the COMP pin is lower than 1V. The MOSFET on-time is maximum when the COMP pin voltage is 5V. According to the slope of the internal ramp, the maximum on-time can be programmed. The necessary maximum on-time depends on the boost inductor, lowest AC line voltage and maximum output power. The resistor value should be designed properly. Off Signal 1V MOT 3 1V Error Amp Output Saw Tooth Generator 4. Over Current Protection Block The MOSFET current is sensed using an external sensing resistor for the over current protection. If the CS pin voltage is higher than 0.8V, the over current protection comparator generates a protection signal. An internal RC filter is included to filter switching noise. 40k CS 4 8pF 0.8V Over Current Protection Comparator OCP Signal Figure 38. Over Current Protection Block 5. Switch Drive Block The FAN7528 contains a single totem-pole output stage designed for a direct drive of power MOSFET. The drive output is capable of up to 400mA peak current with a typical rise and fall time of 50ns with 1nF load. The output voltage is clamped to be 13V to protect MOSFET gate even if the Vcc voltage is higher than 13V. Figure 37. Saw Tooth Generator Block 6. Under Voltage Lock Out Block If the Vcc voltage reaches 12V, the IC's internal blocks are enabled and start operation. If the Vcc voltage drops below 8.5V, most of the internal blocks are disabled to reduce the operating current. Vcc voltage should be higher than 8.5V under normal conditions. 14 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller Typical Application Circuit Application Adapter Output power 100W Input voltage Universal input (90~264 Vac) Output voltage 389V/232V Features High efficiency (>90% at 90 Vac input) Low THD (total harmonic distortion) (<10% at 264 Vac input) Dual output control Key Design Notes Diode D4 is used to prevent IC malfunction that can happen if the CS pin voltage is lower than -0.3V. Important Component s for low THD are R2, R5 and C11. 1. Schematic T1 VAUX BD C5 R3 R4 C10 NTC ZD1 D1 C11 Vcc 8 7 6 5 PFC Output D2 R5 D3 Q1 R6 R10 C3 C2 LF1 C4 C9 R9 OUT GND MOT FAN7528 1 INV COMP R2 C1 V1 CS ZCD R11 2 3 F1 C6 AC Input R8 C8 4 C7 R1 D4 R7 Figure 39. Schematic 15 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller 2. Inductor Schematic Diagram 1 N Vcc 2 3 Np 5 Figure 40. Inductor Schematic Diagram 3. Winding Specification No NVcc Np Pin (sf) 21 53 Wire 0.2 x1 Turns 6 44 Winding Method Solenoid Winding Solenoid Winding Insulation: Polyester Tape t = 0.050mm, 4 Layers 0.2 x 10 Outer Insulation: Polyester Tape t = 0.050mm, 4Layers Air Gap: 0.6mm for each leg 4. Electrical Characteristics Pin Inductance 3-5 Specification 400H 10% Remarks 100kHz, 1V 5. Core & Bobbin Core: EI 3026 Bobbin: EI3026 Ae(mm2): 111 16 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller 6. Demo Circuit Part List Part F1 NTC R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 Value Fuse 3A/250V NTC 10D-9 Resistor 10k 370k 330k 150 20k 10 0.22 10k 10k 2M 12.9k Capacitor 150nF/275VAC 330nF/275VAC 2.2nF/3kV 2.2nF/3kV 150nF/630V 47uF/25V 47nF/50V 220nF 100F/450V 12nF/100V 47pF/50V Note Part T1 Value Inductor 400H MOSFET Note EI3026 Q1 1/4W 1/4W 1/2W 1/2W 1/4W 1/4W 1/2W 1/4W 1/4W 1/4W 1/4W BD D1 D2 D3 D4 ZD1 FQPF13N50C Diode 1N4148 BYV26C 1N5819 1N5819 1N4746 Bridge Diode KBL06 Line Filter Fairchild Fairchild 600V, 1A Fairchild Fairchild 18V 600V/4A Box Capacitor Box Capacitor Ceramic Capacitor Ceramic Capacitor Film Capacitor Electrolytic Capacitor Ceramic Capacitor MLCC Electrolytic Capacitor Film Capacitor Ceramic Capacitor LF1 40mH IC Wire 0.4mm IC1 FAN7528 TNR Fairchild V1 471 470V 17 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller 7. Layout Power Ground Separate the power ground and the signal ground Signal Ground Place the output voltage sensing resistors close to the IC Figure 41. PCB Layout Considerations for FAN7528 8. Performance Data 90 Vac 100W 50W PF THD PF THD 0.999 3.5% 0.997 5.1% 110 Vac 0.998 3.6% 0.996 5.5% 220 Vac 0.991 6.1% 0.971 11.1% 264 Vac 0.983 7.3% 0.947 13.0% 18 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller Mechanical Dimensions 8 Pin DIP Package Unit: inches (mm) 19 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller Mechanical Dimensions 8-Pin SOP Package 4.900.10 3.81 8 5 B A Unit: mm 6.75 6.00 3.900.10 4.75 1.00 PIN ONE INDICATOR (0.33) 1.27 1 4 0.51 0.35 0.25 M 1.27 CBA 3.81 0.50 LAND PATTERN RECOMMENDATION 1.75 MAX +0.05 1.45-0.20 SEE DETAIL A C +0.10 0.15-0.05 0.500.2 5 X 45 (R0.10) (R0.10) 8 0 0.36 GAGE PLANE 0.10 C 0.25 0.19 NOTES: UNLESS OTHERWISE SPECIFIED A) THIS PACKAGE CONFORMS TO JEDEC MS-012, VARIATION AA, ISSUE C, DATED MAY 1990. B) ALL DIMENSIONS ARE IN MILLIMETERS. C) DIMENSIONS DO NOT INCLUDE MOLD FLASH OR BURRS. D) STANDARD LEAD FINISH: 200 MICROINCHES / 5.08 MICRONS MIN. LEAD/TIN (SOLDER) ON COPPER. 0.700.20 (1.04) SEATING PLANE DETAIL A SCALE: 2:1 M08AREVK 20 FAN7528 Rev. 1.0.4 www.fairchildsemi.com FAN7528 Dual Output Critical Conduction Mode PFC Controller TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. ACExTM FAST(R) ActiveArrayTM FASTrTM BottomlessTM FPSTM Build it NowTM FRFETTM CoolFETTM GlobalOptoisolatorTM CROSSVOLTTM GTOTM DOMETM HiSeCTM EcoSPARKTM I2CTM E2CMOSTM i-LoTM EnSignaTM ImpliedDisconnectTM FACTTM IntelliMAXTM FACT Quiet SeriesTM Across the board. Around the world.TM The Power Franchise(R) Programmable Active DroopTM DISCLAIMER ISOPLANARTM LittleFETTM MICROCOUPLERTM MicroFETTM MicroPakTM MICROWIRETM MSXTM MSXProTM OCXTM OCXProTM OPTOLOGIC(R) OPTOPLANARTM PACMANTM POPTM Power247TM PowerEdgeTM PowerSaverTM PowerTrench(R) QFET(R) QSTM QT OptoelectronicsTM Quiet SeriesTM RapidConfigureTM RapidConnectTM SerDesTM ScalarPumpTM SILENT SWITCHER(R) SMART STARTTM SPMTM StealthTM SuperFETTM SuperSOTTM-3 SuperSOTTM-6 SuperSOTTM-8 SyncFETTM TCMTM TinyLogic(R) TINYOPTOTM TruTranslationTM UHCTM UltraFET(R) UniFETTM VCXTM WireTM FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILDiS PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component is any component of a life 1. Life support devices or systems are devices or support device or system whose failure to perform can systems which, (a) are intended for surgical implant into be reasonably expected to cause the failure of the life the body, or (b) support or sustain life, or (c) whose support device or system, or to affect its safety or failure to perform when properly used in accordance with instructions for use provided in the labeling, can be effectiveness. reasonably expected to result in significant injury to the user. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Advance Information Product Status Formative or In Design Definition This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. This datasheet contains preliminary data, and supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. Preliminary First Production No Identification Needed Full Production Obsolete Not In Production This datasheet contains specifications on a product that has been discontinued by Fairchild semiconductor. The datasheet is printed for reference information only. Rev. I18 21 FAN7528 Rev. 1.0.4 www.fairchildsemi.com |
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