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FAN4800ASMY +BOM

Advanced control technology for precise frequency regulation and energy efficiency

Hersteller:

onsemi
Herstellerteil #:

FAN4800ASMY
Datenblatt:

FAN4800ASMY Datenblatt (PDF)
Paket/Koffer:

16-SOIC
Produktart:

Power Factor Correction - PFC
Lebenszyklus:

Active
EDA/CAD Modelle:

Fordern Sie kostenlose CAD-Modelle für an FAN4800ASMY

FAN4800ASMY Allgemeine Beschreibung

The highly integrated FAN4800AS/CS/01S/02S parts are specially designed for power supplies that consist of boost PFC and PWM. They require very few external components to achieve versatile protections / compensation. They are available in 16-pin DIP and SOP packages.
The PWM can be used in either current or voltage mode. In voltage mode, feed-forward from the PFC output bus can reduce the secondary output ripple.
Compared with older productions, ML4800 and FAN4800, FAN4800AS/CS/01S/02S have lower operation current that saves power consumption in external devices. FAN4800AS/CS/01S/02S have accurate 49.9% maximum duty of PWM that makes the hold-up time longer. Brownout protection and PFC soft-start functions available in this series are not available in ML4800 and FAN4800.

To evaluate FAN4800AS/CS/01S/02S for replacing existing FAN4800 and ML4800 boards, five things must be completed before the fine-tuning procedure:
1. Change R_AC resister from the old value to a higher resister: between 6 MΩ to 8 MΩ.
2. Change RT/CT pin from the existing values to R_T=6.8 kΩ and CT=1000 pF to have f_PFC=64 kHz and f_PWM=64 kHz.
3. The VRMS pin needs to be 1.224 V at V_IN=85 V_AC for universal input application from line input from 85 V_AC to 270 V_AC.
4. At full load, the average V_VEA needs to be ~4.5 V and the ripple of V_VEA needs to be less than 400 mV.
5. For the Soft-Start pin, the soft-start current has been reduced to half the FAN4800 capacitor.

There are two differences from FAN4800A/C/01/02 to FAN4800AS/CS/01S/02S:
1. Under-voltage protection debounce time is extended to one second.
2. PWM gate clamp voltage is raised to 19 V.

Hauptmerkmale

Faster Response Time
Improved Efficiency at Heavy Load
Over-Temperature Shutdown Protection
Real-Time Current Sensing and Monitoring
Synchronous Rectification Control
Automated Soft-Start Functionality

Anwendung

HD streaming capabilities
Energy-efficient components
Advanced cooling technology

Servicerichtlinien und andere

After-Sales- und Abwicklungsbezogen

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Verpackung

AVAQ bestimmt und verpackt alle Geräte auf der Grundlage der Schutzanforderungen gegen elektrostatische Entladung (ESD) und Feuchtigkeitsempfindlichkeit (MSL)..