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| FS8S0765RCB Fairchild Power Switch (FPSTM) April 2006 FS8S0765RCB Fairchild Power Switch (FPSTM) Features Burst Mode Operation to Reduce the Power Consumption in the Standby Mode External pin for Synchronization and Soft Start Wide Operating Frequency Range up to 150kHz Low Start-up Current (Max:80A) Low Operating Current (Max:15mA) Pulse by Pulse Current Limiting Over-Voltage Protection (Auto Restart Mode) Overload Protection (Auto Restart Mode) Abnormal Over-Current Protection (Auto Restart Mode) Internal Thermal Shutdown (Auto Restart Mode) Under-Voltage Lockout Internal High-Voltage SenseFET Description FS8S0765RCB is a Fairchild Power Switch (FPS) that is specially designed for off-line SMPS of CRT monitors with minimal external components. This device is a current mode pulse-width modulated (PWM) controller combined with a high-voltage power SenseFET in a single package. The PWM controller features integrated oscillator to be synchronized with the external sync signal, under-voltage lockout, optimized gate driver, temperature compensated precise current sources for the loop compensation. This device also includes various fault-protection, circuits such as over voltage protection, overload protection, abnormal over current protection and over-temperature protection, Compared with a discrete MOSFET and PWM controller solution, FPS can reduce total cost, component count, size, weight, while increasing efficiency, productivity, and system reliability. This device is well suited for the cost-effective monitor power supply. Applications SMPS for Monitor TO-220-5L 1 1. Drain 2. GND 3. VCC 4. Feedback 5. Sync Ordering Information Product Number FS8S0765RCBTU (1) (2) Package TO-220-5L TO-220-5L (Forming) Marking Code 8S0765RC BVDSS 650V RDS(ON) 1.6 FS8S0765RCBYDTU Notes: 1. TU: Non Forming Type 2. YDTU: Forming Type FPSTM is a trademark of Fairchild Semiconductor Corporation. (c)2006 Fairchild Semiconductor Corporation 1 www.fairchildsemi.com FS8S0765RCB Rev. 1.0.2 FS8S0765RCB Fairchild Power Switch (FPSTM) Internal Block Diagram Vref Vcc 3 Vcc Good Drain 1 Soft start 5 & Sync Burst Mode Detector Vfb<0.8V Vss>3V No sync Vref Burst Mode Controller 9V/15V Sync Detector Vref OSC Internal Bias Vcc Idelay Vref IFB PWM 2.5R S R Q FB 4 R Q Gate driver LEB V SD Vcc Vovp TSD UVLO Reset (Vcc<9V) S R Q 2 GND Q AOCP Vocl Figure 1. Functional Block Diagram FS8S0765RCB Rev. 1.0.2 2 www.fairchildsemi.com FS8S0765RCB Fairchild Power Switch (FPSTM) Pin Configuration 5. Soft Start & Sink FS8S0765RC 4. Feedback 3. Vcc 2. GND 1. Drain Figure 2. Pin Configuration (Top View) Pin Definitions Pin Number 1 2 3 Pin Name Drain GND Vcc Pin Function Description SenseFET Drain. High voltage power SenseFET drain connection. This pin is designed to drive the transformer directly. Ground. Control ground and the SenseFET source. Supply Voltage. Supply input. This pin provides internal operating current for both start-up and steady-state operation. Feedback. Internally connected to the inverting input of the PWM comparator. For stable operation, a capacitor should be placed between this pin and GND. If the voltage of this pin reaches 7.5V, the overload protection is activated, resulting in shutdown of FPS. Soft Start and Sync. For soft-start and synchronization to the external sync signal. 4 Feedback 5 Soft Start & Sync FS8S0765RCB Rev. 1.0.2 3 www.fairchildsemi.com FS8S0765RCB Fairchild Power Switch (FPSTM) Absolute Maximum Ratings The "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The "Recommended Operating Conditions" table defines the conditions for actual device operation. (TA = 25C, unless otherwise specified) Symbol VDSS VDGR VGS IDM EAS IAS ID ID VCC VFB VS_S PD (Watt H/S) Derating Tj TA TSTG Parameter Drain-Source (GND) Voltage Gate-Source (GND) Voltage Drain Current Pulsed (2) Single Pulsed Avalanche Energy (3) Single Pulsed Avalanche Current (4) Continuous Drain Current (Tc = 25C) Continuous Drain Current (Tc=100C) Supply Voltage Input Voltage Range Total Power Dissipation Operating Junction Temperature Operating Ambient Temperature Storage Temperature Range (1) Value 650 650 30 28 370 17 7 4.5 40 -0.3 to Vcc -0.3 to 10 145 1.16 +150 -25 to +85 -55 to +150 Unit V V V ADC mJ A ADC ADC V V V W W/C C C C Drain-Gate Voltage (RGS=1M) Notes: 1. Tj=25C to 150C 2. Repetitive rating: Pulse width limited by maximum junction temperature 3. L=14mH, starting Tj=25C 4. L=13H, starting Tj=25C FS8S0765RCB Rev. 1.0.2 4 www.fairchildsemi.com FS8S0765RCB Fairchild Power Switch (FPSTM) Electrical Characteristics (SenseFET part) (TA = 25C unless otherwise specified) Symbol BVDSS IDSS RDS(ON) gfs Ciss Coss Crss td (on) tr td (off) tf Qg Qgs Qgd Parameter Drain Source Breakdown Voltage Zero Gate Voltage Drain Current Static Drain Source On Resistance (1) Forward Transconductance Input Capacitance Output Capacitance Reverse Transfer Capacitance Turn On Delay Time Rise Time Turn Off Delay Time Fall Time Total Gate Charge (Gate-Source+Gate-Drain) Gate-Source Charge Gate-Drain (Miller) Charge Condition VGS=0V, ID=250A VDS=650V, VGS=0V VDS=520V VGS=0V, TC=125C VGS=10V, ID=3.5A VDS=40V, ID=3.5A VGS=0V, VDS=25V, f = 1MHz Min. 650 - Typ. 1.4 8 1415 100 15 25 60 115 65 40 7 12 Max. 200 300 1.6 - Unit V A A W mho pF VDD=325V, ID=6.5A (2) nS VGS=10V, ID=6.5A, VDS=325V (2) - nC Note: 1. Pulse test: Pulse width 300S, duty 2% 2. MOSFET switching time is essentially independent of operating temperature. FS8S0765RCB Rev. 1.0.2 5 www.fairchildsemi.com FS8S0765RCB Fairchild Power Switch (FPSTM) Electrical Characteristics (Continued) (TA=25C unless otherwise specified) Symbol UVLO Section VSTART VSTOP FOSC FSTABLE FOSC DMAX DMIN IFBSO IFBSI VSD Idelay VOVP VOCL TSD VSS ISS VSH VSL VBUH VBUL VBUFB VBUSS TBUDT FBU IOVER IBU_PK ISTART IOP IOP(MIN) IOP(MAX) Start Threshold Voltage Stop Threshold Voltage Initial Frequency Voltage Stability Temperature Stability (1) Maximum Duty Cycle Minimum Duty Cycle Feedback Source Current Feedback Sink Current Shutdown Feedback Voltage Shutdown Delay Current Over Voltage Protection Over Current Latch Voltage (2) Parameter Condition VFB=GND VFB=GND Min. 14 8 18 Typ. Max. 15 9 20 1 5 95 0.9 3.0 7.5 2.0 37 1.0 160 5.0 1.0 7.2 5.8 12 11 1.0 3.0 0.5 40 4.0 0.6 40 9 16 10 22 3 10 98 0 1.1 3.6 8.1 2.4 1.05 5.3 1.2 7.9 6.2 12.6 11.6 1.1 3.5 48 4.48 0.75 80 15 Unit V V kHz % % % % mA mA V A V V C V mA V V V V V V ms kHz A A A mA Oscillator Section 12V VCC 23V -25C TA 85C 0 0 92 VFB=GND VFB=4V,VCC=19V VFB 6.9V VFB=5V VCC 27V 0.7 2.4 6.9 1.6 34 0.95 140 VFB=2 VSS=0V VCC=16V,VFB=5V VCC=16V,VFB=5V VFB=0V VFB=0V VCC=10.5V VCC=10.5V,VFB=0V VCC=10.5V,VFB=0V VCC=10.5V,VFB=0V 4.7 0.8 6.7 5.4 11.6 10.6 0.9 2.5 32 3.52 0.45 VCC=Vstart-0.1V VFB=GND, VCC=16V VFB=GND, VCC=12V VFB=GND, VCC=27V - Feedback Section Protection Section Thermal Shutdown Temp. (1) Soft start Voltage Soft start Current Sync High Threshold Voltage Sync Low Threshold Voltage Burst Mode High Threshold Voltage Burst Mode Low Threshold Voltage Burst Mode Enable FB Voltage Burst Mode Enable S_S Voltage Burst Mode Enable Delay Time Burst Mode Frequency Peak Current Limit (3) Burst Mode Peak Current Limit Start Up Current Operating Supply Current (4) Sync & Soft-start Section Burst Mode Section (DPMS Mode) Current Limit (Self-Protection) Section Total Device Section Note: 1. These parameters, although guaranteed at the design, are not tested in mass production. 2. These parameters, although guaranteed, are tested in EDS (wafer test) process. 3. These parameters indicate inductor current. 4. These parameters are the current flowing in the control IC. FS8S0765RCB Rev. 1.0.2 6 www.fairchildsemi.com FS8S0765RCB Fairchild Power Switch (FPSTM) Typical Performance Characteristics (Control Part) (These characteristic graphs are normalized at TA = 25C) 1.20 1.15 1.20 1.15 1.10 Normalized to 25 C 1.10 Normalized to 25 C -20 0 20 40 60 80 100 120 140 160 1.05 1.00 0.95 0.90 0.85 0.80 -40 1.05 1.00 0.95 0.90 0.85 0.80 -40 -20 0 20 40 60 80 100 120 140 160 Temperature [C] Temperature [C] Figure 3. Start Up Current vs. Temp. Figure 4. Operating Supply Current vs. Temp. 1.20 1.15 1.20 1.15 Normalized to 25 C Normalized to 25 C -20 0 20 40 60 80 100 120 140 160 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 -20 0 20 40 60 80 100 120 140 160 Temperature [C] Temperature [C] Figure 5. Start Threshold Voltage vs. Temp. Figure 6. Stop Threshold Voltage vs. Temp. 1.20 1.15 1.20 1.15 Normalized to 25 C Normalized to 25 C 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 -20 0 20 40 60 80 100 120 140 160 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 -20 0 20 40 60 80 100 120 140 160 Temperature [C] Temperature [C] Figure 7. Initial Freqency vs. Temp. Figure 8. Maximum Duty Cycle vs. Temp. FS8S0765RCB Rev. 1.0.2 7 www.fairchildsemi.com FS8S0765RCB Fairchild Power Switch (FPSTM) Typical Performance Characteristics (Continued) (These characteristic graphs are normalized at TA= 25C) 1.7 1.6 1.5 1.20 1.15 Normalized to 25 C 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 -40 -20 0 20 40 60 80 100 120 140 160 Normalized to 25 C 1.4 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 -20 0 20 40 60 80 100 120 140 160 Temperature [C] Temperature [C] Figure 9. Feedback Offset Voltage vs. Temp. Figure 10. Feedback Sink Current vs. Temp. 1.20 1.15 1.20 1.15 Normalized to 25 C Normalized to 25 C 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 -20 0 20 40 60 80 100 120 140 160 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 -20 0 20 40 60 80 100 120 140 160 Temperature [C] Temperature [C] Figure 11. Shutdown Delay Current vs. Temp. Figure 12. Shutdown Feedback Voltage vs. Temp. 1.20 1.15 1.20 1.15 Normalized to 25 C Normalized to 25 C 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 -20 0 20 40 60 80 100 120 140 160 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 -20 0 20 40 60 80 100 120 140 160 Temperature [C] Temperature [C] Figure 13. Soft Start Voltage vs. Temp. Figure 14. Over Voltage Protection vs. Temp. FS8S0765RCB Rev. 1.0.2 8 www.fairchildsemi.com FS8S0765RCB Fairchild Power Switch (FPSTM) Typical Performance Characteristics (Continued) (These characteristic graphs are normalized at TA= 25C) 1.20 1.15 1.20 1.15 Normalized to 25 C 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 -20 0 20 40 60 80 100 120 140 160 Normalized to 25 C 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 -20 0 20 40 60 80 100 120 140 160 Temperature [C] Temperature [C] Figure 15. Normal Mode Regulation Voltage vs. Temp. Figure 16. Peak Current vs. Temp. 1.4 1.3 1.20 1.15 Normalized to 25 C 1.2 1.1 1.0 0.9 0.8 -40 Normalized to 25 C -20 0 20 40 60 80 100 120 140 160 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 -20 0 20 40 60 80 100 120 140 160 Temperature [C] Temperature [C] Figure 17. Feedback Sink Current vs. Temp. Figure 18. Burst Mode Low Threshold Voltage vs. Temp. 1.20 1.15 1.20 1.15 Normalized to 25 C 1.05 1.00 0.95 0.90 0.85 0.80 -40 -20 0 20 40 60 80 100 120 140 160 Normalized to 25 C 1.10 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 -20 0 20 40 60 80 100 120 140 160 Temperature [C] Temperature [C] Figure 19. Burst Mode High Threshold Voltage vs. Temp. Figure 20. Burst Mode Enable Voltage vs. Temp. FS8S0765RCB Rev. 1.0.2 9 www.fairchildsemi.com FS8S0765RCB Fairchild Power Switch (FPSTM) Typical Performance Characteristics (Continued) (These characteristic graphs are normalized at TA= 25C) 1.20 1.15 Normalized to 25 C 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40 -20 0 20 40 60 80 100 120 140 160 Temperature [C] Figure 21. Burst Mode Peak Current vs. Temp. FS8S0765RCB Rev. 1.0.2 10 www.fairchildsemi.com FS8S0765RCB Fairchild Power Switch (FPSTM) Functional Description 1. Start up: To guarantee stable operation of the control IC, FS8S0765RCB has UVLO circuit with 6V hysteresis band. Figure 22 shows the relation between the supply current (Icc) and the supply voltage (Vcc). Before Vcc reaches 15V, the FPS consumes only startup current of 80mA, which is usually provided by the DC link through the start-up resistor. When Vcc reaches 15V, the FPS begins operation and the operating current increases to 15mA as shown. Once the control IC starts operation, it continues normal operation until Vcc goes below the stop voltage of 9V. Icc 15mA 3. Protection function: FS8S0765RCB has four selfprotective functions such as abnormal over current protection (AOCP), overload protection (OLP), overvoltage protection (OVP) and thermal shutdown (TSD). Because these protection circuits are fully integrated into the IC without external components, the reliability can be improved without cost increase. In the event of these fault conditions, the FPS enters into auto-restart operation. Once the fault condition occurs, switching operation is terminated and MOSFET remains off, which forces Vcc to be reduced. When Vcc reaches 9V, the protection is reset and the supply current reduces to 80 A. Then, Vcc begin to increase with the current provided through the start-up resistor. When Vcc reaches 15V, the FPS resumes 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 24. V Vds Protection is activated (OCP,OLP,OVP or TSD) 80uA Vstop=9V Vstart=15V OVP Vcc Figure 22. High Voltage Current Source 2. Feedback Control: FS8S0765RCB employs primary side regulation, which permits elimination of feedback circuit components in the secondary side, such as optocoupler and TL431. Figure 23 shows the primary side control circuit. The primary side regulation voltage (Vpsr) is controlled to the breakdown voltage of zener diode (Dz). Because current mode control is employed, the drain current of the power MOSFET is limited by the inverting input of PWM comparator (Vfb*). When MOSFET turns on, usually there exists high current spike in the MOSFET current caused by primary-side capacitance and secondary-side rectifier reverse recovery. To prevent premature termination of the switching pulse due to the current spike, the FPS employs leading edge blanking (LEB). The leading edge blanking circuit inhibits the PWM comparator for a short time after the MOSFET is turned on. Vcc 2uA Vref 0.9m A OSC V Vcc 15V 9V time Vcc Auto restart time Figure 24. Auto restart operation after protection 3.1 Abnormal Over Current Protection (AOCP): When the secondary rectifying diodes or the transformer pins are shorted, a steep current with extremely high di/dt can flow during the LEB time. Therefore, the abnormal overcurrent protection (AOCP) block is added to ensure the reliability, as shown in Figure 25. It turns off the SenseFET within 300ns after the abnormal over-current condition is sensed. OVP OLP TSD UVLO S Q' R PWM Comp GATE DRIVER SenseFE T V psr DZ Vfb FB 4 Cfb D1 D2 Vfb* 2.5R Gate driver R RZ OLP V SD AOCP COMP. Vsense : 1V Figure 23. Pulse-Width Modulation (PWM) Circuit Figure 25. AOCP block FS8S0765RCB Rev. 1.0.2 11 www.fairchildsemi.com FS8S0765RCB Fairchild Power Switch (FPSTM) 3.2 Overload Protection (OLP): When the load current exceeds a preset level for longer than the predetermined time, protection circuit should be activated to protect the SMPS. Because of the pulse-by-pulse current limit capability, the maximum peak current through the SMPS is limited, and the maximum input power is restricted with a given input voltage. If the output consumes beyond this maximum power, the output voltage, together with primary side regulation voltage, decrease below the set voltage. This reduces the current through primary side regulation transistor, which increases feedback voltage (Vfb). If Vfb exceeds 2.7V, D1 is blocked and the 2A 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 27. The delay time for shutdown is the time required to charge Cfb from 2.7V to 7.5V with 2A. 3.3 Over Voltage Protection (OVP): In case of malfunction in the primary side feedback circuit or feedback loop open caused by a defect of solder, the current through primary side control transistor becomes almost zero. Then, Vfb climbs up in a similar manner to the overload situation, forcing the preset maximum current to be supplied to the secondary side until the over load protection is activated. Because more energy than required 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. When the Vcc voltage touches 37V, the OVP block is activated. 3.4 Thermal Shutdown (TSD): The SenseFET and the control IC are built in one package. This allows the control IC to detect the heat generation from the SenseFET. If the temperature exceeds approximately 160C, the thermal shutdown is activated. 4. Soft Start: Figure 28 shows the soft-start circuit. During the initial start up, the 0.9 mA current source leaks out through Css and Rss. As Css is charged, the leakage current decreases. By choosing much bigger Css than Cfb, it is possible to increase the feedback voltage slowly, forcing the SenseFET current to increase slowly. After Css reaches its steady state value, D3 is blocked and the soft switching circuit is decoupled from the feedback circuit. If the value of Css is too large, there is possibility that Vfb increases to 7.5V, activating the over load protection during soft start time. To avoid this situation, it is recommended that the value of Css should not exceed 100 times the Cfb. V Vds V 22V 15V 9V Auto restart Vcc time V 7.5V Overload protection time Vfb time Vref Figure 26. The waveforms at the OLP and auto restart 50K Css Rss 5 D3 4 OSC 2.5R 2A 0.9mA R Voffset PWM COMP. D S VFB Overload protection 7.5V Cfb GATE DRIVER FS8S0765RCB 2.7V Figure 28. The circuit for the soft start T12= Cfb*(7.5-2.7)/Idelay T1 T2 t Figure 27. Overload protection FS8S0765RCB Rev. 1.0.2 12 www.fairchildsemi.com FS8S0765RCB Fairchild Power Switch (FPSTM) 5. Synchronization: To reduce the effect of switching noise on the screen, the SMPS for monitor synchronizes its switching frequency to an external signal, typically the horizontal sync flyback signal. The switching frequency of the FPS can vary from 20 kHz to 150 kHz according to the external sync signal. The internal sync comparator detects the sync signal and determines the SenseFET turn-on time. The SenseFET is turned on at the negative edge of the sync comparator output. The reference voltage of the sync comparator is an inverted saw tooth with a base frequency of 20kHz and a varying range between 5.8V and 7.2V, as shown in the Figure 29. The inverted saw tooth reference gets rid of the excessive switching noise at the first synchronized turn-on. The external sync signal is recommended to have an amplitude higher than 4.2V. Vref operation. At the end of the section 3, the load is eliminated and the feedback voltage (Vfb) drops below 1V, forcing the FPS to stop switching operation. During the section 4, Vcc goes down to 11V. During section 5, Vcc is hysteresis controlled between 11V and 12V. When the external sync signal is applied on the pin 5, the FPS resumes normal operation. To minimize the power consumption in standby mode, it is recommended to set the value of Vcc during normal operation as high as possible (about 29V). V 5V 3V Vsync V SYNC COMP. Css Vfb 5 7.2V External Sync Rss D3 5.8V 1V OSC D S PWM COMP. 4 Cfb 2.5R 2A 0.9mA R V GATE DRIVER Vds Voffset FS8S0765RCB V Vcc Figure 29. The circuit for the synchronization with external sync 6. Burst mode operation: To minimize the power dissipation at standby mode, FS8S0765RCB has a burst mode operation. In burst mode, the FPS reduces the effective switching frequency and output voltage. The FPS enters burst mode when the voltage of the soft start pin is higher than 3V. No sync signal is applied and the feedback voltage is lower than 1V. During the burst mode operation, Vcc is hysteresis controlled between 11V and 12V. Once the FPS enters burst mode, it stops switching operation until Vcc drops to 11V. When Vcc reaches 11V, the FPS starts switching with switching frequency of 40kHz and peak MOSFET current of 0.6A until Vcc reaches 12V. When Vcc reaches 12V, the switching operation is terminated again until Vcc reduces to 11V. Figure 30 shows operating waveforms. The soft start during the initial start-up is shown in the section 1. During this period, there is no external sync signal and the switching frequency is 20kHz. The section 2 represents the normal mode operation. The switching frequency is synchronized with the external sync signal. In the section 3, the external sync signal is removed; however, the load still exists and the feedback voltage (Vfb) is higher than 1V. In this period, the FPS does the normal switching operation with switching frequency of 20kHz. The section 4 and 5 show the burst mode Vcc 15V 12V 11V 9V Section 4 Section I Section 2 Section 3 Section 5 Section 6 time Figure 30. The operation of the FS8S0765RCB at the normal mode and the off mode FS8S0765RCB Rev. 1.0.2 13 www.fairchildsemi.com FS8S0765RCB Fairchild Power Switch (FPSTM) Typical Application Circuit 1. 80W Universal Input Power Supply For CRT Monitor T1 1 16 D201 L201 +2 BD101 3 C106 220F/400V + C107 10nF/630V 1 R101 56K/2W + 2 3 15 14 D202 C201 22F/160V + C202 22F/160V 80V - RT101 C105 100nF Line Filter: LF101 0 R103 600K D101 4 R102 3.3 IC101 S/S Vfb Vcc Drain GND 1 2 8 D204 11 D103 7 D102 6 13 12 D203 L202 + C203 47F/100V + C204 47F/100V 4 50V 5 4 3 C110 1F/50V + L203 + C205 1000F/25V + C206 1000F/25V 14V FS8S0765RCB + R105 560 ZD101 6.2VZD 10 C111 0.1F R106 100 C301 4.7nF C302 4.7nF + C112 47F/16V 9 D205 C102 100nF C114 1nF R104 2.2K 2N3904 C109 47nF L205 + C209 1000F/16V + C210 1000F/16V C101 TNR F101 FUSE 0 C113 1F Sync trans 0.1F C115 Hsync_O 2 Micro controller DC5 V 1N4148 1 1nF R201 0.1K R202 4k KSC945 R203 0.7k 0 Off signal On --> normal mode: Off --> off mode 2. Transformer Schematic Diagram Lm : 420uH 1 Np : 40T 16 15 14 13 12 4 6 Nvcc : 12T Nreg : 3T 7 8 9 11 10 Nvo1 : 10T Nvo2 : 22T Nvo3 : 6T Nvo4 : 5T Nvo5 : 3T FS8S0765RCB Rev. 1.0.2 14 + + C103 4.7nF C104 4.7nF C108 22F/50V L204 C207 1000F/25V C208 1000F/25V -14V 6.5V Regulator ouput_5V www.fairchildsemi.com FS8S0765RCB Fairchild Power Switch (FPSTM) 3. Winding Specification No Np1 Nvo1 Nreg Nvo2 Np2 Nvo3 Nvo4 Nvo5 Nvcc Pin (sf) 41 16 15 78 14 13 41 12 9 9 11 10 9 68 Wire 0.3 x 1 0.3 x 1 0.2 x 1 0.3 x 3 0.3 x 1 0.3 x 2 0.3 x 1 0.3 x 2 0.2 x 1 Turns 40 10 3 22 40 6 5 3 12 Winding Method Solenoid Winding Center Winding Solenoid Winding Center Winding Solenoid Winding Solenoid Winding Solenoid Winding Solenoid Winding Solenoid Winding Insulation: Polyester Tape t = 0.050mm, 2 Layers Insulation: Polyester Tape t = 0.050mm, 2 Layers Insulation: Polyester Tape t = 0.050mm, 2 Layers Insulation: Polyester Tape t = 0.050mm, 2 Layers Insulation: Polyester Tape t = 0.050mm, 2 Layers Insulation: Polyester Tape t = 0.050mm, 2 Layers Insulation: Polyester Tape t = 0.050mm, 2 Layers Insulation: Polyester Tape t = 0.050mm, 2 Layers Outer Insulation: Polyester Tape t = 0.050mm, 2 Layers 4. Electrical Characteristics Pin Inductance Leakage Inductance 1-4 1-4 Specification 420H 10% 5H Max Remarks 300kHz, 1V 2nd all short 5. Core & Bobbin Core: EER 3540 Bobbin: EER3540 Ae(mm2): 107 FS8S0765RCB Rev. 1.0.2 15 www.fairchildsemi.com FS8S0765RCB Fairchild Power Switch (FPSTM) 6. Demo Circuit Part List Part F101 RT101 R101 R102 R103 R104 R105 R106 R201 R202 R203 Value Fuse 3A/250V NTC 10D-9 Resistor 56k 3.3 600k 2.2k 0.56k 0.1k 0.1k 4k 0.7k Note Part C201 C202 C203 C204 C205 Value 22nF/160V 22nF/160V 47nF/100V 47nF/100V 1000nF/25V 1000nF/25V 1000nF/25V 1000nF/25V 1000nF/25V 1000nF/25V 0.1F/50V 4.7nF 4.7nF Note Electrolytic Capacitor Electrolytic Capacitor Electrolytic Capacitor Electrolytic Capacitor Electrolytic Capacitor Electrolytic Capacitor Electrolytic Capacitor Electrolytic Capacitor Electrolytic Capacitor Electrolytic Capacitor Ceramic Capacitor AC Filter Capacitor AC Filter Capacitor 2W 1/4W 1W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W C206 C207 C208 C209 C210 C211 C301 C302 Sync trans 22mH Inductor L201 ~ L205 13uH Diode D101 Capacitor C101 C102 C103 C104 C105 C106 C107 C108 C109 C110 C111 C112 C113 C114 C115 471D10 100nF 4.7nF 4.7nF 100nF 220F/400V 10nF/630V 22F/50V 47nF/50V 1F/50V 0.1F/50V 47F/50V 1F/50v 1nF/50V 1nF/50V TNR Box Capacitor AC Filter Capacitor AC Filter Capacitor Box Capacitor Electrolytic Capacitor Ceramic Capacitor Electrolytic Capacitor Ceramic Capacitor Electrolytic Capacitor Ceramic Capacitor Electrolytic Capacitor Electrolytic Capacitor Ceramic Capacitor Ceramic Capacitor IC101 IC201 FS8S0765RC KSC945 LF101 24mH IC (7A, 650V) NPN Transistor BD101 KBL406 Line Filter Bridge Diode D102 D103 D201 D202 D203 D204 D205 UF4007 TVR10G TVR10G UF4007 UF5404 UF5402 UF5402 UF5401 FS8S0765RCB Rev. 1.0.2 16 www.fairchildsemi.com FS8S0765RCB Fairchild Power Switch (FPSTM) Package Dimensions TO-220-5L Dimensions in millimeters June 2002, Rev. C FS8S0765RCB Rev. 1.0.2 17 www.fairchildsemi.com FS8S0765RCB Fairchild Power Switch (FPSTM) Package Dimensions (Continued) TO-220-5L (Forming) Dimensions in millimeters June 2002, Rev. A FS8S0765RCB Rev. 1.0.2 18 www.fairchildsemi.com FS8S0765RCB Fairchild Power Switch (FPSTM) 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) FASTrTM ActiveArrayTM FPSTM BottomlessTM FRFETTM Build it NowTM GlobalOptoisolatorTM CoolFETTM GTOTM CROSSVOLTTM HiSeCTM DOMETM I2CTM EcoSPARKTM i-LoTM E2CMOSTM EnSignaTM ImpliedDisconnectTM FACTTM IntelliMAXTM FACT Quiet SeriesTM Across the board. Around the world.TM The Power Franchise(R) Programmable Active DroopTM 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 UniFETTM UltraFET(R) VCXTM WireTM 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. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD'S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS. 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: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Advance Information Product Status Formative or In Design First Production 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. This datasheet contains specifications on a product that has been discontinued by Fairchild semiconductor. The datasheet is printed for reference information only. Rev. I19 Preliminary No Identification Needed Full Production Obsolete Not In Production FS8S0765RCB Rev. 1.0.2 19 www.fairchildsemi.com |
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