Digital PFC Controller: 88EM8041 

The 88EM8041 is a high performance, low-cost with minimum external component count single stage Power Factor Correction (PFC) Controller for Flyback applications. It can be used for a wide variety of universal input PFC flyback converters for the application including adaptors, battery chargers with output power range up to 150W.

The 88EM8041 includes Marvell’s patented mixed mode control (MMC) that ensures the lowest total harmonics distortion (THD) in the industry. The average current control mode (CCM) is also available as an option. The device has multiple switching frequency options and its soft start is programmable for a variety of applications. The powerful adaptive driver self-adjusting feature allows for flexible application in a wide range of MOSFET sizes, while reducing the EMI.

Through Marvell’s innovative digital signal processing (DSP) solution, the 88EM8041 controller improves the steady state and transient performance. The combination of the MMC built on top of the DSP solution elevates industry standards for PFC controllers.
The proprietary adaptive over-current protection ability ensures constant power constraint. The safety provisions include open loop and a high voltage protection protocol.

The 8-pin SOIC and DIP packages facilitate application by minimizing the requirements for external components as well as for board space. This guarantees simple system design at a minimum cost making the 88EM8041 the best choice for any flyback application with PFC.

Features

• Patented DSP control strategy
• Programmable switching frequency from 37.5 kHz up to 300 kHz
• Advanced MMC that utilizes CCM and DCM operation
• Programmable soft start
• High power factor and low harmonics performance for a wide range of load conditions
• Adaptive over current protection for universal voltage level to provide constant power characteristic
• Fast dynamic performance during input and load transient state
• Optimized total solution to reduce EMI and filter size
• Adaptive gate driver for applications between 10W-150W
• Minimal external components required
• Open loop protection
• Built-in Under Voltage Lockout (UVLO)
• Over Voltage Protection (OVP)
• Thermal shutdown

Applications

• PFC flyback converters
• AC/DC adapter
• Battery charger
  
  

For additional product information please register for the Extranet or contact your local Sales Representative.