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FAN7621 - PFM Controller

General Description

The FAN7621 is a pulse frequency modulation controller for high-efficiency half-bridge resonant converters.

Offering everything necessary to build a reliable and robust resonant converter, the FAN7621 simplifies designs and improves productivity, while improving performance.

Key Features

  • Variable Frequency Control with 50% Duty Cycle for Half-bridge Resonant Converter Topology.
  • High Efficiency through Zero Voltage Switching (ZVS).
  • Fixed Dead Time (350ns).
  • Up to 300kHz Operating Frequency.
  • Pulse Skipping for Frequency Limit (Programmable) at Light-Load Condition.
  • Remote On/Off Control Using CON Pin.
  • Protection Functions: Over-Voltage Protection (OVP), Overload Protection (OLP), Over-Current Protection (OCP), Abnormal Over-Current Protection (AO.

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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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FAN7621 — PFM Controller for Half-Bridge Resonant Converters July 2010 FAN7621 PFM Controller for Half-Bridge Resonant Converters Features ƒ Variable Frequency Control with 50% Duty Cycle for Half-bridge Resonant Converter Topology ƒ High Efficiency through Zero Voltage Switching (ZVS) ƒ Fixed Dead Time (350ns) ƒ Up to 300kHz Operating Frequency ƒ Pulse Skipping for Frequency Limit (Programmable) at Light-Load Condition ƒ Remote On/Off Control Using CON Pin ƒ Protection Functions: Over-Voltage Protection (OVP), Overload Protection (OLP), Over-Current Protection (OCP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD) Applications ƒ PDP and LCD TVs ƒ Desktop PCs and Servers ƒ Adapters ƒ Telecom Power Supplies ƒ Video Game Consoles Description The FAN7621 is a puls