FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Fairchild Power Switch (FPS™) Features Description Current Mode PWM Control with a Fixed Operating Frequency (300kHz) The FS6X-Series is specially designed for off-line DC-DC converters with minimal external components. This device combines a current mode PWM controller with a high voltage power SenseFET in a single package. The PWM controller includes integrated fixed frequency oscillator, line under voltage lockout, sleep on/off function, thermal shutdown protection, over voltage protection, pulse-by-pulse current limit, and temperature compensated precise current sources for a loop compensation. Compared with the discrete MOSFET and PWM controller solution, the FS6X-Series can reduce total cost, component count, size, and weight, while simultaneously increasing efficiency, productivity, and system reliability. Pulse by Pulse Current Limit Over Load Protection Over Voltage Protection Thermal Shutdown Line Under Voltage Detection and Sleep on/off Function Internal High Voltage SenseFET (200V) Supports Forward or Flyback Topology Applications DC-DC Converter OUTPUT POWER TABLE(1) PoE Device Related Application Notes AN4137 - Design Guidelines for Off-line Flyback Converters Using Fairchild Power Switch (FPS) AN4140 - Transformer Design Consideration for Off-line Flyback Converters using Fairchild Power Switch PRODUCT 36VDC~72VDC FS6X0420RJ 14W FS6X0720RJ 26W FS6X1220RJ 36W Table 1. Maximum Output Power AN4141 - Troubleshooting and Design Tips for Fairchild Power Switch Flyback Applications Note: AN4148 - Audible Noise Reduction Techniques for FPS Applications 1. Maximum practical continuous power in an open frame design at 50°C ambient. Ordering Information Part Number Operating Temp. Range Pb-Free Package Packing Method Marking Code FS6X0420RJ -25°C to +85°C Yes D2-Pak-6L Tube 6X0420R FS6X0720RJ -25°C to +85°C Yes D2-Pak-6L Tube 6X0720R FS6X1220RJ -25°C to +85°C Yes D2-Pak-6L Tube 6X1220R FS6X0420RJX -25°C to +85°C Yes D2-Pak-6L Tape & Reel 6X0420R FS6X0720RJX -25°C to +85°C Yes D2-Pak-6L Tape & Reel 6X0720R -25°C to +85°C Yes D2-Pak-6L Tape & Reel 6X1220R FS6X1220RJX (2) Note: 2. X : Tape & Reel FPSTM is a trademark of Fairchild Semiconductor Corporation ©2006 Fairchild Semiconductor Corporation FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 1 www.fairchildsemi.com FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Fairchild Power Switch (FPS™) March 2006 FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Fairchild Power Switch (FPS™) Typical Application Diagram DC OUT DC IN Drain PWM L/S Vfb Vcc GND Figure 1. Typical Flyback Application Internal Block Diagram VLU Line Sense VCC Drain 3 1 VCC Good Line UVLO 9V/15V 6 Enable Internal Bias Vref VSL VCC Idelay Vref IFB OSC 28R FB 4 S Q R Q Gate Driver R VSD VCC S Q R Q VOVP 2 GND VCC Good TSD Line UVLO 5 N.C Figure 2. Functional Block Diagram of FS6X-Series FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 2 www.fairchildsemi.com D2-PAK-6L 6. Line Sense 5. N.C. 4. Vfb 3. Vcc 2. GND 1. Drain Figure 3. Pin Configuration (Top View) Pin Definitions Pin Number Pin Name 1 Drain This pin is the high voltage power SenseFET drain connection. 2 GND This pin is the control ground and the SenseFET source. 3 Vcc This pin is the positive supply input. This pin provides internal operating current for both start-up and steady-state operation. 4 Feedback (FB) This pin is internally connected to the inverting input of the PWM comparator. The collector of an opto-coupler is typically tied to this pin. For stable operation, a capacitor should be placed between this pin and GND. If the voltage of this pin reaches 7.5V, the over load protection is activated resulting in shutdown of the IC. 5 N.C. 6 Line Sense (LS) Pin Function Description This pin is not connected. According to the voltage of this pin, three operation modes are defined: normal operation mode, line under voltage lock out mode, and sleep mode. If the voltage of this pin is smaller than 2.55V, the IC goes into the line under voltage lock out, stopping switching operation. If the voltage of this pin is smaller than 1.8V, the IC enters into sleep mode. During sleep mode, reference voltage generation circuit including the shunt regulator is disabled and only 300uA operation current is required. FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 3 www.fairchildsemi.com FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Fairchild Power Switch (FPS™) Pin Assignments (Ta=25°C, unless otherwise specified.) Parameter Drain-source Voltage Pulsed Drain Current (Tc=25°C)(1) Continuous Drain Current (Tc=25°C) Continuous Drain Current (Tc=100°C) Symbol Value Unit VDSS 200 V IDM ID ID FS6X0420RJ 10.2 FS6X0720RJ 16.2 FS6X1220RJ 23.7 FS6X0420RJ 3.4 FS6X0720RJ 5.4 FS6X1220RJ 12.4 FS6X0420RJ 2.1 FS6X0720RJ 3.4 FS6X1220RJ 7.9 A A (rms) A (rms) Supply Voltage VCC 35 Input Voltage Range VFB -0.3 to VCC V 43 W FS6X0420RJ Total Power Dissipation (Tc=25°C) PD FS6X0720RJ 54 FS6X1220RJ 125 Internally limited °C TA -25 to +85 °C TSTG -55 to +150 °C Operating Junction Temperature Tj Operating Ambient Temperature Storage Temperature Range V Note: 1. Repetitive rating: Pulse width limited by maximum junction temperature. Thermal Impedance Parameter Junction-to-Ambient Thermal Junction-to-Case Thermal(1) Symbol Value Unit θJA - °C/W θJC FS6X0420RJ 2.9 FS6X0720RJ 2.3 FS6X1220RJ 1.0 °C/W Note: 1. Infinite cooling condition - Refer to the SEMI G30-88. FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 4 www.fairchildsemi.com FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Fairchild Power Switch (FPS™) Absolute Maximum Ratings (Ta=25°C, unless otherwise specified.) Parameter Symbol Min. Typ . Max. Unit VGS = 0V, ID = 250μA 200 220 - V VDS = 200V, VGS = 0V - - 250 μA VDS = 160V VGS = 0V, TC = 125°C - - 250 μA - 1.2 1.5 - 0.64 0.75 - 0.24 0.30 - 32 45 - 49 65 - 125 160 270 300 330 kHz 12V ≤ Vcc ≤ 23V 0 1 3 % -25°C ≤ Ta ≤ 85°C 0 ±5 ±10 % Condition SENSE FET SECTION Drain Source Breakdown Voltage BVDSS Zero Gate Voltage Drain Current IDSS FS6X0420RJ Static Drain Source on Resistance (1) RDS(ON) FS6X0720RJ VGS = 10V, ID = 2.5A FS6X1220RJ FS6X0420RJ Output Capacitance FS6X0720RJ COSS VGS = 0V VDS = 25V, f = 1MHz FS6X1220RJ Ω pF CONTROL SECTION Initial Frequency FOSC Voltage Stability FSTABLE - Temperature Stability (2) ΔFOSC Maximum Duty Cycle DMAX - 72 80 88 % Minimum Duty Cycle DMIN - - - 0 % Start Threshold Voltage VSTART VFB = GND 14 15 16 V Stop Threshold Voltage VSTOP VFB = GND 8 9 10 V IFB VFB = GND 0.7 0.9 1.1 mA 1.2 1.4 1.6 2.3 2.7 3.1 2.8 3.2 3.6 23 25 27 V 140 160 - °C VFB ≥ 6.9V 6.9 7.5 8.1 V VFB = 5V 4.0 5.0 6.0 μA Feedback Source Current PROTECTION SECTION Peak Current Limit (3) FS6X0420RJ FS6X0720RJ ILimit - FS6X1220RJ Over Voltage Protection VOVP Thermal Shutdown Temperature (2) TSD Shutdown Feedback Voltage VSD Shutdown Delay Current VCC > 6.9V - IDELAY A Notes: 1. Pulse test: Pulse width ≤ 300μS, duty ≤ 2%. 2. These parameters, although guaranteed at the design, are not tested in mass production. 3. These parameters indicate the inductor current. FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 5 www.fairchildsemi.com FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Fairchild Power Switch (FPS™) Electrical Characteristics (Ta=25°C, unless otherwise specified.) Parameter Symbol Condition Min. Typ . Max. Unit Istart VFB = GND, VCC = 14V - 60 120 uA V = 1V, VCC = 16V - 300 500 uA - 10 15 mA TOTAL DEVICE SECTION Startup Current (1) Sleep Mode Current ISLEEP IOP VFB = GND, VCC = 16V IOP(MIN) VFB = GND, VCC = 12V IOP(MAX) VFB = GND, VCC = 20V Line UVLO Threshold Voltage VLU - 2.4 2.55 2.7 V Sleep On/Off Threshold Voltage VSL - 1.5 1.8 2.1 V Operating Supply Current (1) Notes: 1. This parameter is the current flowing into the control IC. FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 6 www.fairchildsemi.com FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Fairchild Power Switch (FPS™) Electrical Characteristics (These Characteristic Graphs are Normalized at Ta= 25°C.) [mA] [V] 11.0 16.0 10.5 15.5 10.0 15.0 9.5 14.5 14.0 9.0 -25 0 25 50 75 100 125 -25 150 0 25 50 75 100 125 150 Temp [℃] Temp [℃] Figure 4. Operating Current vs. Temp Figure 7. Start Threshold Voltage vs. Temp [V] [KHz] 9.50 305.0 303.0 9.25 301.0 9.00 299.0 8.75 297.0 295.0 8.50 -25 0 25 50 75 100 125 150 -25 0 25 Temp [℃] 50 75 100 125 150 Temp [℃] Figure 5. Stop Threshold voltage vs. Temp Figure 8. Operating Frequency vs. Temp [%] [mA] 81.0 1.10 1.05 80.5 1.00 80.0 0.95 0.90 79.5 0.85 79.0 0.80 -25 0 25 50 75 100 125 150 -25 Temp [℃] 25 50 75 100 125 150 Temp [℃] Figure 6. Maximum Duty vs. Temp FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 0 Figure 9. Feedback Source Current vs. Temp 7 www.fairchildsemi.com FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Fairchild Power Switch (FPS™) Typical Performance Characteristics (These Characteristic Graphs are Normalized at Ta= 25°C) [V] [uA] 7.60 5.3 5.2 7.55 5.1 7.50 5.0 4.9 7.45 4.8 7.40 4.7 -25 0 25 50 75 100 125 150 -25 0 25 Temp [℃] 50 75 100 125 150 Temp [℃] Figure 10. Shutdown FB Voltage vs. Temp Figure 13. Shutdown Delay Current vs. Temp [V] [V] 26.0 2.7 25.5 2.6 25.0 2.5 24.5 2.4 24.0 2.3 -25 0 25 50 75 100 125 150 -25 0 25 Temp [℃] 50 75 100 125 150 Temp [℃] Figure 11. Over Voltage Protection vs. Temp Figure 14. LineUVLO threshold Voltage vs.Temp [uA] [A] 60 3.30 58 3.25 56 3.20 54 3.15 3.10 52 3.05 50 -25 0 25 50 75 100 125 150 3.00 -25 Temp [℃] Figure 12. Start Up Current vs. Temp FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 0 25 50 75 100 125 150 Temp [℃] Figure 15. Current Limit vs. Temp 8 www.fairchildsemi.com FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Fairchild Power Switch (FPS™) Typical Performance Characteristics (Continued) 1. Startup 3. Protection Circuit To guarantee stable operation of the control IC, Vcc has under voltage lockout (UVLO) with 6V hysteresis. Figure 16 shows the relation between the supply current (Icc) and the supply voltage (Vcc). Before Vcc reaches 15V, the start-up current is 60μA, which is usually provided by the DC link through start-up resistor. When Vcc reaches 15V, the control IC begins operation and the operating current increases to 10mA as shown. Once the control IC starts operation, it continues its normal operation unless Vcc goes below the stop voltage of 9V. Besides pulse-by-pulse current limit, the FS6X-Series has the following self protection functions: over load protection (OLP), over voltage protection (OVP), and thermal shutdown (TSD). Because these protection circuits are fully integrated into the IC without external components, the reliability is improved. In the event of a fault condition, FS6X-Series enters into auto-restart operation. Once the fault condition occurs, switching operation is terminated, and the MOSFET remains off, which causes Vcc to be reduced. When Vcc reaches 9V, the protection is reset and the supply current reduces to 60uA. Then, Vcc begin to increase with the current provided through the start-up resistor. When Vcc reaches 15V, FS6X-Series resumes its normal operation if the fault condition is removed. In this manner, the autorestart alternately enables and disables the switching of the power MOSFET until the fault condition is eliminated as illustrated in Figure 18. Icc 10mA Vds 60uA Power on Fault occurs Fault removed Vcc Vstop=9V Vstart=15V Vz Figure 16. Relation between Supply Current and Voltage Vcc 2. Feedback Control The FS6X-Series employs current mode control. The voltage of the feedback pin is compared with the current sense voltage for pulse width modulation (PWM). Figure 17 illustrates the simplified PWM block. The feedback voltage determines the peak drain current of the SenseFET. Usually, an opto-coupler, along with the TL431(shunt regulator) are used to implement the feedback network. The collector of the opto-coupler transistor is connected to the feedback pin and the emitter is connected to the ground pin. When the voltage of the reference pin of the TL431 exceeds the internal reference voltage of 2.5V, the optocoupler diode current increases, pulling down the feedback voltage. 15V 9V Icc 10mA 60uA Vcc Vref 5uA Vfb Vo t 0.9mA Normal operation FB 4 OSC D1 Cfb Fault situation Normal operation Figure 18. Auto Restart Operation After Protection D2 28R Vfb* Gate Driver R 3.1 Pulse-by-pulse Current Limit 431 VSD As shown in Figure 17, the drain current of the power MOSFET is limited by the inverting input of PWM comparator (Vfb*). Assuming that the 0.9mA current source flows only through the internal resistor (28R +R= 2.9k), the cathode voltage of diode D2 is about 2.6V. Since D1 is blocked when the feedback voltage (Vfb) exceeds 2.6V, the maximum voltage of the cathode of D2 is 2.6V. Therefore, the maximum value of Vfb* is about 0.1V, which limits the peak value of the power MOSFET drain current. OLP Figure 17. Pulse Width Modulation (PWM) Circuit FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 9 www.fairchildsemi.com FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Fairchild Power Switch (FPS™) Applications Information switching. To avoid undesired activation of OVP during normal operation, Vcc should be properly designed to be below 25V. Overload means that the load current exceeds a pre-set level due to an abnormal situation. In this situation, the protection circuit should be activated to protect the SMPS (Switch Mode Power Supplies). However, even when the SMPS is in normal operation, the over load protection circuit can be activated during the load transition. To avoid this undesired operation, the over load protection circuit is designed to be activated after a specified period to determine whether it is a transient situation or an overload situation. Because of the pulse-by-pulse current limit capability, the maximum peak current through the SMPS is limited, and therefore the maximum input power is restricted with a given input voltage. If the output consumes beyond this maximum power, the output voltage (Vo) decreases below the set voltage. This reduces the current through the opto-coupler diode which also reduces opto-coupler transistor current increasing Vfb. If Vfb exceeds 2.6V, D1 is blocked and the 5mA current source starts to charge Cfb slowly compared to when the 0.9mA current source charges Cfb. In this condition, Vfb continues increasing until it reaches 7.5V, and the switching operation is terminated at that time as shown in Figure 19. The delay time for shutdown is the time required to charge Cfb from 2.6V to 7.5V with 5mA. When Cfb is 10nF (103), T12 is approximately 9.8ms and when Cfb is 0.1mF (104), T12 is approximately 98ms. These values are enough to prevent SMPS from being shut down during transient situations. 3.4 Thermal Shutdown (TSD) The thermal shutdown circuitry senses the junction temperature. The threshold is set at 160×C. When the junction temperature rises above this threshold (160×C), the power MOSFET is disabled. 4. Line UVLO and Sleep Mode According to the voltage of the Line Sense pin, three operation modes are defined: normal operation mode, line under voltage lock out mode, and sleep mode, as shown in Figure 20. When the voltage of this pin is over 2.55V, FS6X-Series operates in normal mode. When the voltage of this pin is less than 2.55V, it goes into line under voltage lock out mode terminating switching operation. When the voltage of this pin is less than 1.8V, it enters into sleep mode. During sleep mode, the reference voltage generation circuit, including the shunt regulator, is disabled and only 300mA operation current is required. VFB Vin Vcc 3 Over load protection Vcc good 9V/15V 7.5V R1 VSL (1.8v) Sleep ON OFF Enable Vref Line Sense 6 2.6V R2 VLU (2.5V) Line UVLO Internal Bias T12= Cfb*(7.5-2.6)/Idelay T1 T2 t Figure 20. Line Sense Block Figure 19. Over Load Protection 3.3 Over Voltage Protection (OVP) In the case of a malfunction in the secondary side feedback circuit, or feedback loop open caused by a defect of solder, the current through the opto-coupler transistor becomes almost zero. Then, Vfb climbs up in a similar manner to the over load situation, forcing the preset maximum current to be supplied to the secondary side until the over load protection is activated. Because more than required energy is provided to the output, the output voltage may exceed the rated voltage before the over load protection is activated, resulting in the breakdown of the devices in the secondary side. To prevent this situation, an over voltage protection (OVP) circuit is employed. In general, Vcc is proportional to the output voltage and FS6X-Series uses Vcc instead of directly monitoring the output voltage. If VCC exceeds 25V, OVP circuit is activated resulting in termination of FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 10 www.fairchildsemi.com FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Fairchild Power Switch (FPS™) 3.2 Over Load Protection (OLP) Application Output power Input voltage Output voltage (Max current) PoE Device 15W 36-72Vdc 5V (3.0A) Features High switching frequency(300kHz) High power density Low component count Enhanced system reliability through various protection functions Key Design Notes Capacitor C104 is employed to reduce the noise on sensed line voltage. The delay time for over load protection is designed to be about 12ms with C103 of 22nF. If a faster triggering of OLP is required, C103 can be reduced to 10nF. 1. Schematic C301 2.2nF 1kV DC Input Voltage: 36Vdc~72Vdc R301 10Ω R221 15Ω R222 R223 C221 15Ω 15Ω 1nF 50V D201 STOS15L25G T1 : EPC19 C101 47uF 100V R101 200kΩ R102 100kΩ C102 22uF 50V C104 1nF C201 10nF 50V D102 1N4148 D103 P6KE160CA 4 GND R210 1kΩ IC201 FOD2741 C204 10nF 50V C203 10nF 50V L201 2.2uH Output : 5V / 3A C205 330uF 16V R210 1kΩ C210 R212 10nF 30kΩ 50V Vfb IC101 FS6X1220R C202 10nF 50V R104 1Ω 3 6 L/S Vcc 1 R105 15kΩ 5 Drain N.C 2 C222 1nF 50V C103 22nF 50V R213 18kΩ R214 18kΩ Figure 21. Demo Circuit FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 11 www.fairchildsemi.com FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Fairchild Power Switch (FPS™) Typical Application Circuit 11 9 10 8 7 6 NVcc Np/2 Np/1 Np/2 Ns/2 NVcc Ns/2 Ns/1 Ns/1 Np/1 1 2 3 4 5 Figure 22. Transformer Schematic Diagram 3. Winding Specifications No Pin (s→f) Wire Turns Winding Method 1 → 11 φ 0.35 × 1 25 Center Winding 0.4φ × 3 4 Solenoid Winding 0.35φ × 1 25 Center Winding 0.3φ × 1 12 Center Winding Np/1 Insulation: Polyester Tape t = 0.050mm, 2Layers 6→5 Ns/1 Insulation: Polyester Tape t = 0.050mm, 2Layers 2 → 10 Np/2 Insulation: Polyester Tape t = 0.050mm, 2Layers 9→3 Nvcc Insulation: Polyester Tape t = 0.050mm, 2Layers 4. Electrical Characteristics Parameter Pin Specification Remarks Inductance 1,2 - 10,11 61uH ± 10% 100kHz, 1V Leakage Inductance 1,2 - 10,11 8.8uH Max 2nd all short 5. Core & Bobbin Core: EPC19 Bobbin: EPC19 Ae(mm2): 22.7 FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 12 www.fairchildsemi.com FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Fairchild Power Switch (FPS™) 2. Transformer Part Value Note Part Value R101 200K 1/4W C101 47uF/100V R102 Electrolytic Capacitor 100K 1/4W C102 22uF/50V Electrolytic Capacitor Resistor Note Capacitor R104 1K 1/4W C103 22uF/50V Ceramic Capacitor R105 18K 1/4W C104 1nF/50V Ceramic Capacitor R210 40K 1/4W C201 10uF/25V Ceramic Capacitor R201 1K 1/4W C202 10F/25V Ceramic Capacitor R211 1K 1/4W C203 10F/25V Ceramic Capacitor R212 30K 1/4W C204 10F/25V Ceramic Capacitor R213 18K 1/4W C205 330uF/16V Electrolytic Capacitor R214 18K 1/4W C210 10nF/50V Ceramic Capacitor R221 15K 1/4W C221 1nF/50v Ceramic Capacitor R222 15K 1/4W C222 1nF/50v Ceramic Capacitor R223 15K 1/4W C301 2.2nF/1kv Film R301 10K 1/4W - - - - - - - - Diode D102 IC 1N4148 IC101 FS6X1220RJ FPSTM D103 P6KE160CA TVS IC201 FOD2741 Optocoupler D201 STPS15L25G - - - - - - - - - - - - - L201 2.2uH - - - - - - - - - - Inductor FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 13 www.fairchildsemi.com FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Fairchild Power Switch (FPS™) 6. Demo Circuit Part List Unit: mm D2-Pak-6L FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 14 www.fairchildsemi.com FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Fairchild Power Switch (FPS™) Mechanical Dimensions 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. ACEx™ FAST® ActiveArray™ FASTr™ Bottomless™ FPS™ Build it Now™ FRFET™ CoolFET™ GlobalOptoisolator™ CROSSVOLT™ GTO™ DOME™ HiSeC™ EcoSPARK™ I2C™ E2CMOS™ i-Lo™ EnSigna™ ImpliedDisconnect™ FACT™ IntelliMAX™ FACT Quiet Series™ Across the board. Around the world.™ The Power Franchise® Programmable Active Droop™ ISOPLANAR™ LittleFET™ MICROCOUPLER™ MicroFET™ MicroPak™ MICROWIRE™ MSX™ MSXPro™ OCX™ OCXPro™ OPTOLOGIC® OPTOPLANAR™ PACMAN™ POP™ Power247™ PowerEdge™ PowerSaver™ PowerTrench® QFET® QS™ QT Optoelectronics™ Quiet Series™ RapidConfigure™ RapidConnect™ μSerDes™ ScalarPump™ SILENT SWITCHER® SMART START™ SPM™ Stealth™ SuperFET™ SuperSOT™-3 SuperSOT™-6 SuperSOT™-8 SyncFET™ TCM™ TinyLogic® TINYOPTO™ TruTranslation™ UHC™ UltraFET® UniFET™ VCX™ Wire™ DISCLAIMER 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 FAIRCHILD’S 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 Product Status Definition Advance Information Formative or In Design This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. Preliminary First Production 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. No Identification Needed Full Production This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. 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 FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 15 www.fairchildsemi.com FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Fairchild Power Switch (FPS™) TRADEMARKS