MP6908GJ-P

Power Supply Controllers, Monitors Overview

The MP6908GJ-P is a flyback switching controller from Monolithic Power Systems designed to replace Schottky diodes in synchronous rectification applications. It operates with a fixed 400 kHz switching frequency and supports up to 50% maximum duty cycle. The device regulates the external SR MOSFET on-resistance to approximately 40mV, ensuring low conduction losses. It features fast turn-off and turn-on delays of 30 ns each, minimizing reverse recovery energy. Operating within a temperature range of -40°C to +125°C, it draws a typical supply current of 2.9 mA. The component is housed in a TSOT-23-6 surface-mount package.

Power Supply Controllers, Monitors Feature Summary

• Intelligent control of external SR MOSFETs to eliminate auxiliary winding requirements
• Programmable ringing detection prevents false triggering during DCM and quasi-resonant operation
• Fast switching transitions reduce reverse recovery losses and improve efficiency
• Supports both high-side and low-side synchronous rectifier configurations

Power Supply Controllers, Monitors Applications

• Battery chargers with potential low output voltages
• High-efficiency flyback power adapters
• Systems requiring Energy Star compliance
• Quasi-resonant converter designs

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'GJ' against the manufacturer's latest datasheet to confirm pinout and thermal characteristics. Ensure the ordering quantity aligns with factory packaging constraints. Confirm RoHS compliance status through official documentation before finalizing procurement specifications.

Power Supply Controllers, Monitors Selection Notes

Select this component for flyback topologies where eliminating auxiliary windings reduces transformer complexity. It is suitable for designs utilizing standard or logic-level MOSFETs. Consider the 400 kHz fixed frequency when sizing magnetic components. Verify that the application does not require variable frequency operation.

Power Supply Controllers, Monitors Part Context

This part belongs to the MP6908 series of intelligent rectifiers. It serves as a direct replacement for traditional diode-based rectification in isolated power supplies. The series focuses on reducing standby power consumption and improving light-load efficiency by actively managing the synchronous rectifier state.

Power Supply Controllers, Monitors Replacement Considerations

The MP6900 is an alternative within the same family but is marked as not recommended for new designs. Engineers should verify if the MP6902 offers superior performance metrics for modern applications.