Green power PFM control chip IC Nanjing micro launched specifically for LED driver design

Nanjing Micro One Electronics Inc (Nanjing Micro One ELectronics Inc.) the day before the launch of a high performance and uses pulse frequency modulation (PFM) technology and green power management chip ICME8108, specifically for battery charger of high performance, low power AC/DC switching power supply controller and design of driving power adapter and LED.

The internal ME8108 contains 5V built-in voltage, voltage feedback and digital circuit, a constant peak current setting circuit, leading edge blanking circuit optimization, the transistor driving circuit, overvoltage protection circuit, circuit protection circuit, control circuit and PFM control of constant voltage and current at. With low power consumption, low start-up current and low EMI, the maximum efficiency can reach more than 80%, starting voltage, output voltage and maximum power can be adjusted. This product uses pulse frequency modulation (PFM) technology, the flyback circuit in discontinuous current mode (DCM), using the primary advanced feedback control (PSR) technology to achieve constant current (CV/CC) control accuracy without optocoupler and secondary feedback circuit and loop compensation circuit can realize system stability reliable work.

ME8108 can be widely used in a variety of low power AC/DC switching power supply scheme, such as mobile phone charger, power adapter, in addition, because the chip integrated constant current function, so it can be widely used in the small power LED driving scheme. The chip can be used to build a AC/DC converter solution with very few external components and maintain high performance over a wide AC voltage input range.