FAN7930B Fairchild Semiconductor, FAN7930B Datasheet
FAN7930B
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FAN7930B Summary of contents
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... OVP level due to the resistors that are connected at INV pin are damaged. The FAN7930B can be disabled if the INV pin voltage is lower than 0.45V and the operating current decreases to a very low level. ...
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... Application Diagram Internal Block Diagram © 2010 Fairchild Semiconductor Corporation FAN7930B • Rev. 1.0.2 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 FAN7930B • Rev. 1.0.2 V OUT GND ZCD CC FAN7930B ...
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... Thermal Impedance Symbol Θ 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 FAN7930B • Rev. 1.0.2 Parameter > <-0. (1) Human Body Model, JESD22-A114 ...
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... 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 FAN7930B • Rev. 1.0.2 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 FAN7930B • Rev. 1.0.2 Conditions (4) I =3mA DET I = -3mA DET V =1V~5V ZCD (4) T =25°C ...
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... Detection Soft-Start and Startup without None Overshoot Control Range None Compensation THD Optimizer External TSD None Comparison between FAN7930 and FAN7930B Function FAN7930 RDY Pin Integrated OVP Pin None Control Range None Compensation © 2010 Fairchild Semiconductor Corporation FAN7930B • Rev. 1.0.2 ...
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... Typical Performance Characteristics Figure 4. Voltage Feedback Input Threshold vs. T REF1 Figure 6. Stop Threshold Voltage (V Figure 8. Operating Supply Current (I © 2010 Fairchild Semiconductor Corporation FAN7930B • Rev. 1.0.2 Figure vs. T Figure 7. STOP A ) vs. T Figure Start Threshold Voltage (V ) vs. T START Startup Supply Current ( ...
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... Figure 10. Zero Duty Cycle Output Voltage (V vs Figure 12. Maximum On-Time Program Figure 14. Input High Clamp Voltage (V vs © 2010 Fairchild Semiconductor Corporation FAN7930B • Rev. 1.0.2 ) Figure 11. Maximum On-Time Program 1 (t EAZ ) Figure 13. Current Sense Input Threshold Voltage ON,MAX2 Limit (V ...
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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 © 2010 Fairchild Semiconductor Corporation FAN7930B • Rev. 1.0.2 ) vs. T Figure 17 vs. T Figure 19. OVP Threshold at OVP Pin (V RST A ) Figure 21. OVP Threshold Voltage (V RDY,SAT 10 Output Voltage Low ( ...
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... IC. The IC operating current decreases to reduce power consumption if the IC is disabled the timing chart of the internal circuit near the INV pin when rated PFC output voltage is assumed at 390V supply voltage is 15V. © 2010 Fairchild Semiconductor Corporation FAN7930B • Rev. 1.0 PFC CC exceeds V , 20mA CC Z Figure 23 ...
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... Figure 25. Comparison of 1 Recovering Mode 4. Control Range Compensation: On time is controlled by the output voltage compensator with FAN7930B. Due to this when input voltage is high and load is light, control range become narrow compared when input voltage is low. That control range decrease is anti- proportional to the double square of the input voltage. ...
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... Figure 31. Control Circuit Unlike a conventional voltage-mode PWM controller, FAN7930B turns on the MOSFET at the falling edge of ZCD signal. On instance is decided by the external signal and the turn-on time lasts until the error amplifier output (V ) and sawtooth waveform meet. When ...
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... This operation is better when soft-start time is very long. However, too long startup time enlarges the output voltage building time at light load. FAN7930B has “overshoot-less” control at startup. During startup, the feedback loop is controlled by an internal proportional ...
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... To improve this, lengthened turn-on time near the zero cross region is a well-known technique, though the method may be different from company to company and may be proprietary. FAN7930B embodies 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. 12. Gate Driver Output: FAN7930B 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 time of 50ns with 1nF load ...
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... 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 FAN7930B • 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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... Quick charge diode (D106) can be eliminated if output diode inrush current capability is enough. Thought D106, system operation is normal due to the controller’s highly reliable protection features. 1. Schematic © 2010 Fairchild Semiconductor Corporation FAN7930B • Rev. 1.0.2 Input Voltage Device Range 90-265V ...
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... 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 FAN7930B • Rev. 1.0.2 Transformer Schematic Diagram of FAN7930B Wire Turns 0.1φ× → 4 0.3φ 6 Pin Specification 9, 10 → 230μ ...
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... C104 12nF/50V C105 100nF/50V C107 33µF/50V C108 220nF/50V C109 47nF/50V C110,116 1nF/50V C112 47nF/50V C111 220µF/450V C114 2.2nF/450V C115 2.2nF/450V © 2010 Fairchild Semiconductor Corporation FAN7930B • Rev. 1.0.2 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 FAN7930B • Rev. 1.0 1.75 4 ...
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... Fairchild Semiconductor Corporation FAN7930B • Rev. 1.0.2 22 www.fairchildsemi.com ...