DP2281 - DEVELOPER MICROELECTRONICS

DP2281 High Performance Current Mode PWM Controller

DP2281 is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications. PWM switching frequency at normal operation is internally fixed and is trimmed to tight range. At no load or light load condition, the IC operates in extended burst mode to minimize switching l.

Features

■ Less than 75mW Standby Power at Universal
■ Input Power on Soft Start Reducing MOSFET Vds
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■ Stress Frequency Shuffling for EMI Fixed 65KHz Switching Frequency Internal Synchronized Slope Compensation Low VDD Startup Current and Low Operating
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■ Current Built-in Leading Edge Blanking On-chip Thermal Shutdown Soft Gate Driver for Good EMI Performance Over Load Protection Cycle-by-Cycle Current Limiting VDD Under Voltage Lockout with Hysteresis
■ (UVLO) VDD OVP & Clamp APPLICATIONS
■Offline AC/DC flyback converter for AC/DC Adapter
■ Open-frame SMPS TYPICAL APPLICATION AC IN .