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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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FQPF13N50C Datenblatt(PDF) 1 Page - Fairchild Semiconductor |
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FQPF13N50C Datenblatt(HTML) 1 Page - Fairchild Semiconductor |
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1 / 17 page  www.fairchildsemi.com © 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com Rev. 1.0.0 • 8/26/09 AN-8027 FAN480X PFC+PWM Combination Controller Application FAN4800A / FAN4800C / FAN4801 / FAN4802 / FAN4802L Introduction This application note describes step-by-step design considerations for a power supply using the FAN480X controller. The FAN480X combines a PFC controller and a PWM controller. The PFC controller employs average current mode control for Continuous Conduction Mode (CCM) boost converter in the front end. The PWM controller can be used in either current mode or voltage mode for the downstream converter. In voltage mode, feed-forward from the PFC output bus can be used to improve the line transient response of PWM stage. In either mode, the PWM stage uses conventional trailing- edge duty cycle modulation, while the PFC uses leading- edge modulation. This proprietary leading/trailing-edge modulation technique can significantly reduce the ripple current of the PFC output capacitor. The synchronization of the PWM with the PFC simplifies the PWM compensation due to the controlled ripple on the PFC output capacitor (the PWM input capacitor). In addition to power factor correction, a number of protection features have been built in to the FAN480X. These include programmable soft-start, PFC over-voltage protection, pulse-by-pulse current limiting, brownout protection, and under-voltage lockout. FAN4801/2/2L feature programmable two-level PFC output to improve efficiency at light-load and low-line conditions. FAN480X is pin-to-pin compatible with FAN4800 and ML4800, only requiring adjustment of some peripheral components. The FAN480X series comparison is summarized in the Appendix A. D BOOST L BOOST Q1 C BOOST R CS1 C IF1 F1 IEA RAMP RT/CT FBPWM SS VRMS ISENSE IAC ILIMIT GND OPWM OPFC VD D VREF FBPFC VEA R FB2 RFB1 Q2 Q3 D R1 L 1 1 L 2 1 C O11 L 1 2 L22 Vo 1 Vo2 V D D AC Input RRAMP FAN480X Drv R IAC Drv Drv C O12 C O21 C O22 D F1 D F2 D R2 V BOUT C FB C REF C DD C LF2 R LF2 R CS2 D R1 D R2 R RMS2 C RMS1 C RMS2 C LF1 C SS C T C RAMP R T R IC C IC1 C IC2 D1 D2 R RMS1 R RMS3 R B C VC2 C VC1 R VC C B Vo1 Vo2 R D R BIAS R OS1 R OS2 R OS3 R F C F R LF1 Figure 1. Typical Application Circuit of FAN480X |
Ähnliche Teilenummer - FQPF13N50C |
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Ähnliche Beschreibung - FQPF13N50C |
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