FAN7930C Fairchild Semiconductor, FAN7930C Datasheet
FAN7930C
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FAN7930C Summary of contents
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... PFC output voltage reaches the proper level with hysteresis. The FAN7930C can be disabled if the INV pin voltage is lower than 0.45V and the operating current decreases to a very low level. Using a new variable on-time control method, THD is lower than the conventional CRM boost PFC ICs ...
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... Application Diagram Internal Block Diagram © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 Figure 1. Typical Boost PFC Application Figure 2. Functional Block Diagram 2 www.fairchildsemi.com ...
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... For proper operation, the stray inductance in the gate driving path must be minimized This is the IC supply pin. IC current and MOSFET drive current are supplied using this pin. CC © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 Figure 3. Pin Configuration (Top View) Description 3 www.fairchildsemi.com ...
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... Thermal Impedance Symbol Thermal Resistance, Junction-to-Ambient JA Note: 3. Regarding the test environment and PCB type, please refer to JESD51-2 and JESD51-10. © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 Parameter > <-0. (1) Human Body Model, JESD22-A114 ...
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... Maximum On-Time Programming 1 T ON,MAX1 t Maximum On-Time Programming 2 ON,MAX2 Current-Sense Section Current-Sense Input Threshold V CS Voltage Limit I Input Bias Current CS,BS t Current-Sense Delay to Output CS,D © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 Conditions V Increasing CC V Decreasing CC I =20mA -0.2V CC START Output Not Switching ...
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... Enable Threshold Voltage EN HY Enable Hysteresis EN T Thermal Shutdown Temperature SD T Hysteresis Temperature of TSD HYS Note: 4. These parameters, although guaranteed by design, are not production tested. © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 Conditions (4) I =3mA DET I = -3mA DET V =1V~5V ZCD (4) T =25°C ...
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... None V -Absent Detection None IN Soft-Start and Overshoot None Prevention THD Optimizer External TSD None Comparison between FAN7930 and FAN7930C Function FAN7930 RDY Threshold 2.240V RDY Hysteresis 0.600V Control Range None Compensation © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 FAN7930C FAN7930C Advantages ...
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... Typical Performance Characteristics Figure 4. Voltage Feedback Input Threshold 1 (V vs. T Figure 6. Stop Threshold Voltage (V Figure 8. Operating Supply Current (I © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 ) Figure 5. Start Threshold Voltage (V REF1 A ) vs. T Figure 7. Startup Supply Current (I STOP A ) vs. T Figure 9. Output Upper Clamp Voltage (V ...
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... Typical Performance Characteristics Figure 10. Zero Duty Cycle Output Voltage (V vs. T Figure 12. Maximum On-Time Program 2 (t vs. T Figure 14. Input High Clamp Voltage (V © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 ) Figure 11. Maximum On-Time Program 1 (t EAZ A ) Figure 13. Current-Sense Input Threshold Voltage ON,MAX2 ...
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... Typical Performance Characteristics Figure 16. Output Voltage High (V Figure 18. Restart Timer Delay (t Figure 20. Output Saturation Voltage (V vs. T © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 ) vs. T Figure 17. Output Voltage Low ( vs. T Figure 19. Output Ready Voltage (V RST A ) Figure 21. OVP Threshold Voltage (V RDY,SAT ...
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... IC is disabled. Figure 24 is the timing chart of the internal circuit near the INV pin when rated PFC output voltage is 390V and V supply voltage is 15V © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0 PFC CC exceeds V , 20mA CC Z Figure 24. 3. RDY Output: When the INV voltage is higher than 2 ...
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... When the power switch turns on, negative voltage is induced at the auxiliary winding due to the opposite winding direction (see Equation 1). Positive voltage is induced (see Equation 2) when the power switch turns off. © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 T AUX ...
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... Figure 32. Unlike a conventional voltage-mode PWM controller, FAN7930C turns on the MOSFET at the falling edge of ZCD signal. On-instance is determined by the external signal and the turn-on time lasts until the error amplifier output (V ) and sawtooth waveform meet ...
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... This operation is better when soft-start time is very long. However, too much startup time enlarges the output voltage building time at light load. FAN7930C has overshoot avoidance at startup. During startup, the feedback loop is controlled by an internal proportional ...
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... Figure 39. To improve this, lengthened turn-on time near the zero cross region is a well-known technique, though the method may vary and may be proprietary. FAN7930C optimizes this by sourcing current through the ZCD pin. Auxiliary winding voltage becomes negative when the MOSFET turns on and is proportional to input voltage. ...
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... An internal RC filter of 40kΩ and 8pF is included to filter switching noise. 11. Gate Driver Output: FAN7930C contains a single totem-pole output stage designed for a direct drive of the power MOSFET. The drive output is capable +500/-800mA peak current with a typical rise and fall ...
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... The switching current sense path should not share with another path to avoid interference. Some additional components may be needed to reduce the noise level applied to the CS pin. © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0 stabilizing capacitor for V close as possible to the V CC difficult, place the SMD capacitor as close to the corresponding pins as possible ...
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... C114 C115 ,2.2n ,2. C101, 220nF R101,1M- J ZNR101 ,10D471 Circuit for V Circuit for V © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 Input Voltage Device Range 90-265V AC power can be supplied through Zero Current Detect (ZCD) CC Optional D106 600V 3A 230mH, 49:6 V AUX R103, 10k,1W ...
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... Insulation: Polyester Tape t = 0.025mm, 3 Layers N AUX Top Insulation: Polyester Tape t = 0.025mm, 4 Layers 4. Electrical Characteristics Inductance 5. Core & Bobbin Core: EER3124, Samhwa (PL-7) (Ae=97.9mm Bobbin: EER3124 © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 Figure 46. Transformer Schematic Diagram Wire Turns 0.1φ× → 4 0.3φ 6 Pin Specification 9, 10 → ...
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... C104 12nF/50V C105 100nF/50V C107 33µF/50V C108 220nF/50V C109 47nF/50V C110 1nF/50V C112 47nF/50V C111 220µF/450V C114 2.2nF/450V C115 2.2nF/450V © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 Note Part # 1W Q101 1/2W 1W D101 1/4W D102 1/4W D103 1/4W D104 1/4W D105 1/4W D106 5W 1/4W IC101 ...
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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/. © 2010 Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0 1.75 4 ...
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... Fairchild Semiconductor Corporation FAN7930C • Rev. 1.0.1 22 www.fairchildsemi.com ...