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AT3273 - Current Mode PWM Controller

General Description

AT3273 is a highly integrated current mode PWM control IC optimized for high performance low standby power offline flyback converter applications.

Key Features

  • Frequency jitter function to improve EMI performance of power supply.
  • No-audible-noise green mode Control.
  • Multi operation mode: Fixed-frequency CCM, green mode and burst mode.
  • Internal Slope Compensation.
  • Low VDD Startup Current and Low Operating Current.
  • Leading Edge Blanking.
  • UVLO.
  • Gate Max Output Voltage Clamp at 12V.
  • Overload Protection (OLP).
  • Over temperature Protection (OTP).
  • Line Compensation Over Current Protection (OCP) Applicat.

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Datasheet Details

Part number AT3273
Manufacturer ATC
File Size 0.96 MB
Description Current Mode PWM Controller
Datasheet download datasheet AT3273 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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TECHNOLOGY AT3273 Current Mode PWM Controller Description AT3273 is a highly integrated current mode PWM control IC optimized for high performance low standby power offline flyback converter applications. To meet the international power conservation requirements, optimized green mode is integrated to improve the efficiency at light or no load conditions with no audible noise. Slope compensation is integrated to ensure the stability at high load. Lead edge blanking is integrated to prevent the false trigger at the transition of the switch. Soft switching control at the gate drive can improve the EMI performance of the power supply. The Gate-drive output is clamped at 12V to protect the power MOS.