FAN6791 Fairchild Semiconductor, FAN6791 Datasheet
FAN6791
Related parts for FAN6791
FAN6791 Summary of contents
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... To further reduce power consumption, manufactured using the CMOS process, which allows an operating current of only 6mA. FAN6791/3 integrates a frequency-jittering function internally to reduce EMI emissions of a power supply with minimum line filters. The built-in synchronized slope compensation achieves stable control ...
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... FAN6791NY 48% FAN6793NY 65% FAN6791MY 48% FAN6793MY 65% For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html. © 2008 Fairchild Semiconductor Corporation FAN6791 / FAN6793 • Rev. 1.0.3 Operating Eco Temperature Status Range -40°C to +105°C Green 16-Pin Dual In-Line Package (DIP) -40°C to +105°C Green ...
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... Application Diagram © 2008 Fairchild Semiconductor Corporation FAN6791 / FAN6793 • Rev. 1.0.3 Figure 1. Typical Application 3 www.fairchildsemi.com ...
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... Block Diagram © 2008 Fairchild Semiconductor Corporation FAN6791 / FAN6793 • Rev. 1.0.3 Pattern Generator Figure 2. Function Block Diagram 4 www.fairchildsemi.com ...
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... Marking Information SOIC DIP Pin Configuration © 2008 Fairchild Semiconductor Corporation FAN6791 / FAN6793 • Rev. 1.0.3 – Fairchild Logo F Z – Plant Code X – 1-Digit Year Code Y – 1-Digit Week Code TT – 2-Digit Die Run Code T – Package Type (M:SOIC) P – Y: Green Package M – ...
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... Flyback PWM Gate Drive. The totem-pole output drive for the forward PWM MOSFET. This pin is 15 OFYB internally clamped under 16V to protect the MOSFET. Line-Voltage Detection. The pin is used for line compensation, for forward, and brownout 16 VRMS protection. © 2008 Fairchild Semiconductor Corporation FAN6791 / FAN6793 • Rev. 1.0.3 6 exceeds the DD www.fairchildsemi.com ...
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... Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol T Operating Ambient Temperature A © 2008 Fairchild Semiconductor Corporation FAN6791 / FAN6793 • Rev. 1.0.3 Parameter < 50°C) A Human Body Model, JEDEC:JESD22-A114 (All Pins Except HV Pin) Charged Device Model, JEDEC:JESD22-C101 ...
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... Load Regulation of Reference △V REF1 Voltage Line Regulation of Reference △V REF2 Voltage I Maximum Current REF_MAX I V Short Current OS REF © 2008 Fairchild Semiconductor Corporation FAN6791 / FAN6793 • Rev. 1.0.3 Conditions Min. V – 0.16V DD V =15V; GATE Open DD V =15V; GATE Open =10mA REF ...
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... Circuit Protection OFYB-GATE Driver Flyback PWM Gate Output V OFYB-CLAMP Clamping Voltage V Output Voltage Low OL-OFYB V Output Voltage High OH-OFYB t Rising Time R-OFYB t Falling Time F-OFYB © 2008 Fairchild Semiconductor Corporation FAN6791 / FAN6793 • Rev. 1.0.3 Conditions Min. 50 2.4 0.8 130 (2) 100 1/3. Pin Open 5.0 4.2 53 2.4 60 1.8 1.2 ...
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... When activated, the output is disabled and the latch is turned off. 2. This is the threshold temperature for enabling the output again and resetting the latch after over-temperature protection has been activated. © 2008 Fairchild Semiconductor Corporation FAN6791 / FAN6793 • Rev. 1.0.3 Conditions FB Pin Open R =24kΩ ...
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... Figure 9. V vs. Temperature DD-ON 47.50 47.45 47.40 47.35 47.30 47.25 47.20 47.15 47.10 -40℃ -25℃ -10℃ 5℃ 20℃ 35℃ Figure 11. OPWM Maximum Duty Cycle vs. Temperature © 2008 Fairchild Semiconductor Corporation FAN6791 / FAN6793 • Rev. 1.0.3 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.0 -40℃ -25℃ -10℃ 95℃ 110℃ 125℃ vs. Temperature 2.5 2.0 1.5 1.0 0.5 0.0 65℃ ...
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... PWM-VLIMIT RMS 0.815 0.810 0.805 0.800 0.795 0.790 0.785 0.780 -40℃ -25℃ -10℃ 5℃ 20℃ 35℃ Figure 19 =1V) vs. Temperature FYB-VLIMIT RMS © 2008 Fairchild Semiconductor Corporation FAN6791 / FAN6793 • Rev. 1.0.3 57.5 57.0 56.5 56.0 55.5 55.0 54.5 54.0 53.5 -40℃ -25℃ -10℃ vs. Temperature Figure 14. Falling Time ...
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... Typical Characteristics 66.1 66.0 65.9 65.8 65.7 65.6 65.5 -40℃ -25℃ -10℃ 5℃ 20℃ 35℃ Figure 21. OPWM Frequency vs. Temperature © 2008 Fairchild Semiconductor Corporation FAN6791 / FAN6793 • Rev. 1.0.3 66.3 66.2 66.1 66.0 65.9 65.8 65.7 65.6 50℃ 65℃ 80℃ 95℃ 110℃ 125℃ -40℃ -25℃ -10℃ Figure 22. OFYB Frequency vs. Temperature 13 5℃ 20℃ 35℃ 50℃ 65℃ ...
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... Oscillator Operation A resistor connected from the RI pin to the GND pin generates a constant current source for the FAN6791/3 controller. This current is used to determine the center PWM frequency. Increasing the resistance reduces PWM frequency. Using a 24kΩ resistor results in a corresponding 65kHz PWM frequency ...
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... RI Pin Open / Short Protection. The RI pin is used to set the switching frequency and internal current reference. The stand-by PWM and forward PWM stages are disabled whenever the RI pin is short or open. Open-Loop Protection. The stand-by PWM and forward PWM stages of FAN6791/3 is disabled whenever the FBFYB / FBPWM pin is open www.fairchildsemi.com ...
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... Reference Circuit © 2008 Fairchild Semiconductor Corporation FAN6791 / FAN6793 • Rev. 1.0.3 Figure 29. Reference Circuit 16 www.fairchildsemi.com ...
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... C25 C28 R10 R13 R14 R15 R17 © 2008 Fairchild Semiconductor Corporation FAN6791 / FAN6793 • Rev. 1.0.3 Component Reference C/0.47µF/X2 C/0.47µF/X2 C/471P/50V C/471P/50V C/102P/50V C/102P/50V C/102P/50V C/472/400V C/472/400V C/102P/50V C/10µF/50V C/104P/50V C/102P/1KV C/470µF/200V C/470µF/200V C/103P/1KV C/1000µ ...
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... 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’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. © 2008 Fairchild Semiconductor Corporation FAN6791 / FAN6793 • Rev. 1.0.3 A 19.68 18.66 9 ...
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... 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’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ © 2008 Fairchild Semiconductor Corporation FAN6791 / FAN6793 • Rev. 1.0.3 19 www.fairchildsemi.com ...
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... Fairchild Semiconductor Corporation FAN6791 / FAN6793 • Rev. 1.0.3 20 www.fairchildsemi.com ...