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FAN7930B - PFC Controller

General Description

controller for boost PFC applications that operate in critical conduction mode (CRM).

mode PWM that compares an internal ramp signal with the error amplifier output to generate a MOSFET turn

off signal.

Key Features

  • Additional OVP Detection Pin.
  • VIN.
  • Absent Detection.
  • Maximum Switching Frequency Limitation.
  • Internal Soft.
  • Start and Startup without Overshoot.
  • Internal Total Harmonic Distortion (THD) Optimizer.
  • Precise Adjustable Output Over.
  • Voltage Protection.
  • Open.
  • Feedback Protection and Disable Function.
  • Zero Current Detector (ZCD).
  • 150 ms Internal Startup Timer.
  • MOSFET Over.
  • Curr.

📥 Download Datasheet

Datasheet Details

Part number FAN7930B
Manufacturer onsemi
File Size 628.96 KB
Description PFC Controller
Datasheet download datasheet FAN7930B Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Critical Conduction Mode PFC Controller FAN7930B Description The FAN7930B is an active power factor correction (PFC) controller for boost PFC applications that operate in critical conduction mode (CRM). It uses a voltage−mode PWM that compares an internal ramp signal with the error amplifier output to generate a MOSFET turn−off signal. Because the voltage−mode CRM PFC controller does not need rectified AC line voltage information, it saves the power loss of an input voltage sensing network necessary for a current−mode CRM PFC controller. FAN7930B provides over−voltage protection (OVP), open−feedback protection, over−current protection (OCP), input−voltage−absent detection, and under−voltage lockout protection (UVLO).