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FAN4822

Features: • Average current sensing, continuous boost, leading edge PFC for low total harmonic distortion and near unity power factor• Built-in ZVS switch control with fast response for high efficiency at high power levels• Average line voltage compensation with brownout control&...

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SeekIC No. : 004340370 Detail

FAN4822: Features: • Average current sensing, continuous boost, leading edge PFC for low total harmonic distortion and near unity power factor• Built-in ZVS switch control with fast response for ...

FAN4822 Data Sheet

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Part Number:
FAN4822
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• Average current sensing, continuous boost, leading edge PFC for low total harmonic distortion and near unity power factor
• Built-in ZVS switch control with fast response for high efficiency at high power levels
• Average line voltage compensation with brownout control
• Current fed gain modulator improves noise immunity and provides universal input operation
• Overvoltage comparator eliminates output "runaway" due to load removal
• UVLO, current limit, and soft-start
• Precision 1.3% reference


Pinout

Connection Diagram


Specifications

Parameter Min Max Unit
Shunt Regulator Current (ICC)   55 mA
Peak Driver Output Current   ±500 mA
Analog Inputs -0.3 7 V
Junction Temperature   150 °C
Storage Temperature Range -65 150 °C
Lead Temperature (Soldering, 10 sec)   150 °C
Thermal Resistance (JA)
Plastic DIP
Plastic SOIC		   80
110		 °C/W
°C/W



Description

The FAN4822 is a PFC controller designed specifically for high power applications. The controller contains all of the functions necessary to implement an average current boost PFC converter, along with a Zero Voltage Switch (ZVS) controller to reduce diode recovery and MOSFET turn-on losses.

The average current boost PFC circuit provides high power factor (>98%) and low Total Harmonic Distortion (THD). Built-in safety features include undervoltage lockout, overvoltage protection, peak current limiting, and input voltage brownout protection.

The ZVS control section drives an external ZVS MOSFET which, combined with a diode and inductor, soft switches the boost regulator. This technique reduces diode reverse recovery and MOSFET switching losses to reduce EMI and maximize efficiency.




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