MICRONE ME8115D7G

High-performance current-mode PWM controller designed for cost-effective AC/DC converters, delivering up to 12W/18W continuous output power and 15W/20W peak output power over a wide input voltage range of 85–265V. Compatible with typical flyback converter topologies for a streamlined AC/DC converter design. The internal startup circuit employs a unique current-sinking approach, utilizing the amplification effect of the power switch itself to complete startup, significantly reducing power dissipation in the startup resistor. At low output power levels, the IC automatically reduces operating frequency to achieve ultra-low standby power consumption. When VCC reaches 9.9V/12V/22.5V, the internal OVP circuit activates to clamp the output voltage, preventing overvoltage caused by optocoupler or feedback circuit failure. The IC also incorporates comprehensive overload protection and anti-saturation functions to guard against overload, transformer saturation, and output short-circuit conditions in real time, enhancing power supply reliability. An integrated thermal protection function with hysteresis shuts down the output when the chip overheats. The current limit can be set via external resistor Rs and fine-tuned according to different power requirements.

• High-performance current-mode PWM controller designed for cost-effective AC/DC converters
• Continuous output power up to 12W/18W over a wide input voltage range of 85–265V, with peak output power up to 15W/20W
• Optimized high-reliability circuit design combined with cost-effective bipolar process technology, reducing overall product cost
• Compatible with typical flyback converter topologies for simple AC/DC converter implementation
• Unique current-sinking startup circuit leverages power transistor amplification to complete startup, reducing startup resistor power dissipation
• Automatic switching frequency reduction at light load for ultra-low standby power consumption
• OVP triggered when VCC reaches 9.9V/12V/22.5V to prevent output overvoltage
• Comprehensive overload and saturation protection against overload, transformer saturation, and output short-circuit conditions
• Integrated thermal protection with hysteresis, shutting down output upon overtemperature
• Current limit settable via external resistor Rs
• Integrated 700V high-voltage power switch
• Integrated high-voltage startup current source for fast startup
• Integrated energy efficiency control, standby power below 0.1W
• Integrated OVP, UVLO, and short-circuit protection
• Integrated overload and OTP protection
• Precise temperature compensation with accurate cycle-by-cycle current control
• Low startup current and low operating current
• Adaptive frequency hopping for low EMI
• High conversion efficiency, meeting Energy Star 2.0 requirements
• Minimal external components, low system cost

• Power Adapter
• Portable Device Charging Power Supply
• DVD/DVB Power Supply
• Battery Charger
• ATX Standby Power Supply