UC3854AN 2.4kw aktif pfc devresi 240v ac 420v dc

PFC Devresi UC3854AN (High Power Factor Preregulator) entegresi üzerine kurulu bir çok smps güç kaynağının primer bölümünde bu devreler bulunuyor kaliteye göre aktif pasif devreler kullanılır güç kaynaklarında reaktif gücü en aza indirmek için kullanılıyorlar . PFC Devresinin giriş voltajı 240 Volt AC çıkışı 420 Volt DC

Projenin tüm kaynakları detayları hesaplamaları (ingilizce) var bunlarda ayrı bir hazine 🙂 protel çizimleri datasheet dosyaları microsoft excel formatında UC3854 Calculations.xls, Boost Converter Calculations.xls ve Inductor Design software (Magnetics)

UC3854 High Power Factor Preregulator

Exhibitor: Matthew Douglas Supervisor: Geoffrey Walker – The UC3854 provides active power factor correction for power systems that otherwise would draw non-sinusoidal current from sinusoidal power lines. This device implements all the control functions necessary to build a power supply capable of optimally using available power-line current while minimizing line-current distortion. To do this, the UC3854 contains a voltage amplifier, an analog multiplier/divider, a current amplifier, and a fixed-frequency PWM. In addition, the UC3854 contains a power MOSFET compatible gate driver, 7.5V reference, line anticipator, load-enable comparator, low-supply detector, and over-current comparator.

• Control Boost PWM to 0.99 Power Factor
• Limit Line Current Distortion To <5%
• World-Wide Operation Without Switches
• Feed-Forward Line Regulation
• Average Current-Mode Control
• Low Noise Sensitivity
• Low Start-Up Supply Current
• Fixed-Frequency PWM Drive
• Low-Offset Analog Multiplier/Divider
• 1A Totem-Pole Gate Driver
• Precision Voltage Reference

Dosya ve detaylar: innovexpo.itee.uq.edu.au/2003/exhibits/s362886/