Fairchild FAN6863W Highly Integrated Green-Mode PWM Controller Datasheet

The FAN6863W is a highly integrated PWM controller that provides several features to enhance the performance of flyback converters. To minimize standby power consumption, a proprietary Green Mode provides off-time modulation to continuously decrease the switching frequency under light-load conditions. Under zero-load conditions, the power supply enters a deep standby mode, turning off all switch devices, consuming extremely low standby power.


Fairchild FAN6863W Highly Integrated Green-Mode PWM Controller Datasheet - cover page
Brand
Fairchild
Document type
Datasheet
Language
English
Pages
16
File format
PDF
File size
1.8 MB
Published
01 August, 2012
Updated
30 September, 2023
Model
FAN6863
MD5 checksum
8ABB7685AB1E68985EEADB759C12FF38

About this manual

The FAN6863W is a highly integrated PWM controller designed to enhance the performance of flyback converters by minimizing standby power consumption. It utilizes a proprietary Green Mode that modulates off-time to continuously decrease switching frequency under light-load conditions, entering Burst Mode at zero load. The device integrates a frequency-hopping function to reduce EMI emissions and includes adaptive current limiting to maintain constant output power across universal input ranges.

What's inside

  • Features
  • Description
  • Applications
  • Ordering Information
  • Pin Configuration
  • Absolute Maximum Ratings
  • Electrical Characteristics
  • Typical Performance Characteristics

Specifications

Low Standby PowerUnder 0.1W
Low Startup Current8A
Operating Supply Current in Green Mode600uA
PWM Frequency (Fixed)65KHz
Gate Output Maximum Voltage Clamp13.5V
Gate Driving Capability400mA
Operating Junction Temperature Range-40 to +125 °C

Frequently asked questions

What is the primary function of the FAN6863W?

It is a highly integrated PWM controller designed to enhance the performance of flyback converters.

How does the device minimize standby power consumption?

It uses a proprietary Green Mode that modulates off-time to continuously decrease switching frequency under light-load conditions.

What happens when zero-load conditions are detected?

The power supply enters Burst Mode, which completely shuts off PWM output.

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