FAN4801S Fairchild Semiconductor, FAN4801S Datasheet
FAN4801S
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FAN4801S Summary of contents
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... Telecom System Power Supply Distributed Power Related Resources AN-8027 - FAN480X PFC+PWM Combination Controller Application © 2010 Fairchild Semiconductor Corporation FAN4800AS/CS/01S/02S • Rev. 1.0.1 Description The highly integrated FAN4800AS/CS/01S/02S parts are specially designed for power supplies that consist of boost PFC and PWM. They require very few external ...
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... FAN4800ASMY -40°C to +105°C FAN4800CSNY -40°C to +105°C FAN4800CSMY -40°C to +105°C FAN4801SNY -40°C to +105°C FAN4801SMY -40°C to +105°C FAN4802SNY -40°C to +105°C FAN4802SMY -40°C to +105°C Application Diagram © 2010 Fairchild Semiconductor Corporation FAN4800AS/CS/01S/02S • Rev. 1.0.1 ...
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... Application Diagram © 2010 Fairchild Semiconductor Corporation FAN4800AS/CS/01S/02S • Rev. 1.0.1 VEA IEA FBPFC IAC VREF ISENSE VRMS VDD SS OPFC FBPWM OPWM RT/CT GND RAMP ILIMIT VREF VREF Figure 2. Typical Application, Voltage Mode 3 VDD www.fairchildsemi.com ...
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... Block Diagram © 2010 Fairchild Semiconductor Corporation FAN4800AS/CS/01S/02S • Rev. 1.0.1 Figure 3. FAN4800AS/CS Function Block Diagram Figure 4. FAN4801S/02S Function Block Diagram 4 www.fairchildsemi.com ...
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... Marking Information © 2010 Fairchild Semiconductor Corporation FAN4800AS/CS/01S/02S • Rev. 1.0.1 – Fairchild Logo F Z – Plant Code X – 1-Digit Year Code – Package Type (N:DIP) P – Y: Green Package M Figure 5. DIP Top Mark – Fairchild Logo F Z – Plant Code X – ...
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... PFC error amplifier. This pin is connected to the PFC output through a divider network. Output of PFC Voltage Amplifier. The error amplifier output for PFC voltage feedback loop. 16 VEA A compensation network is connected between this pin and ground. © 2010 Fairchild Semiconductor Corporation FAN4800AS/CS/01S/02S • Rev. 1.0.1 Figure 7. Pin Configuration (Top View) 6 and C ...
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... The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol T Operating Ambient Temperature A © 2010 Fairchild Semiconductor Corporation FAN4800AS/CS/01S/02S • Rev. 1.0.1 Parameter < 50°C A DIP SOP ...
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... Low-Power Detect Comparator V VEA Voltage OFF OPFC VEAOFF V OK Comparator IN Voltage Level on FBPFC to V RD-FBPFC Enable OPWM During Startup ΔV Hysteresis RD-FBPFC © 2010 Fairchild Semiconductor Corporation FAN4800AS/CS/01S/02S • Rev. 1.0.1 = 25° =6.8kΩ, and Conditions V =V -0.1V; OPFC OPWM ...
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... OFFSET PFC I Comparator LIMIT Peak Current Limit Threshold V PFC-ILIMIT Voltage, Cycle-by-Cycle Limit ΔV PFC I -Gain Modulator Output LIMIT PK © 2010 Fairchild Semiconductor Corporation FAN4800AS/CS/01S/02S • Rev. 1.0.1 (Continued) = 25° =6.8kΩ, and Conditions ( NONINV ...
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... Maximum Voltage SS-MAX I Soft-Start Current SS PWM I Comparator LIMIT V Threshold Voltage PWM-ILIMIT t Propagation Delay to Output PD t Leading-Edge Blanking Time PWM-BNK Range (FAN4801S/02S) V RMS AC Voltage Low VRMS-L V RMS AC Voltage High VRMS-H V VEA LOW VEA-L V VEA HIGH VEA-H I Source Current from FBPFC TC PWM Output Driver ...
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... Figure 14. Gm vs. Temperature V -1.177 -1.178 -1.179 -1.180 -1.181 -1.182 -1.183 -40 -25 - Figure 16. V PFC-ILIMIT © 2010 Fairchild Semiconductor Corporation FAN4800AS/CS/01S/02S • Rev. 1.0.1 28.04 28.02 28.00 27.98 27.96 27.94 27.92 27.90 27.88 27.86 50℃ 65℃ 80℃ 95℃ 110℃ 125℃ -40℃ -25℃ -10℃ 7.520 7.515 7.510 7.505 7 ...
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... Figure 24. I vs. Temperature SS © 2010 Fairchild Semiconductor Corporation FAN4800AS/CS/01S/02S • Rev. 1.0.1 867.5 867.0 866.5 866.0 865.5 865.0 864.5 864.0 863.5 863.0 862.5 862.0 50℃ 65℃ 80℃ 95℃ 110℃ 125℃ -40℃ -25℃ -10℃ ...
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... PFC from the power line. The general form of the output of the gain modulator is: © 2010 Fairchild Semiconductor Corporation FAN4800AS/CS/01S/02S • Rev. 1.0.1 I GAINMOD Note that the output current of the gain modulator is limited around 159μ ...
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... PFC Brownout The AC UVP comparator monitors the AC input voltage. The PFC is disabled as AC input lowers, causing V be less than 1.05V. © 2010 Fairchild Semiconductor Corporation FAN4800AS/CS/01S/02S • Rev. 1.0.1 Error Amplifier Compensation The PWM loading of the PFC can be modeled as a negative resistor because an increase in the input voltage to the PWM causes a decrease in the input current ...
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... PFC output voltage. The two-level PFC output of the FAN4801S/02S can be programmable. As Figure 27 shows, FAN4801S/02S detect the voltage of VEA and VRMS pins to determine if the system operates low line and light load. At the second-level PFC, there is a current of 20µ ...
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... FAN4800AS/CS/01S/02S system. The bootstrap winding can be taped from the PFC boost choke or the transformer of the DC-to-DC stage. © 2010 Fairchild Semiconductor Corporation FAN4800AS/CS/01S/02S • Rev. 1.0.1 Leading/Trailing Edge Modulation Conventional PWM techniques employ trailing-edge modulation, in which the switch turns on right after the trailing edge of the system clock ...
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... Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’ ...
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... Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’ ...
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... Fairchild Semiconductor Corporation FAN4800AS/CS/01S/02S • Rev. 1.0.1 19 www.fairchildsemi.com ...