System General Launches New High-Performance Forward ATX Power Total Solution

System General Corp. announced a complete forward power solution for desktop power supplies and PC servers. The major circuit of this solution consists of System General products, including a PFC/PWM combo control chip, a flyback PWM control chip, and a four channel supervisor IC. The company claims that its simple design structure significantly improves the conversion efficiency of power systems and reduces power system cost.

"System General has long devoted itself to developing innovative power technology with low power-consumption and high efficiency." said Gary Lin, Senior Vice President of System General. "To help customers develop new products and meet the future market trends, we provide the ideal power solution that simplify power system design circuits and reduce external component costs, as well as enhance the price-to-performance ratio of power supplies."

This System General solution highly integrates various protection functions and high technology patents; its optimal performance including complies with the EU harmonic wave directive, has a power factor of over 98%, provides a high power conversion efficiency of over 80%, and low standby power consumption (under 1W).

The highly-integrated PFC/PWM combo-IC for forward topology of a power supply/adaptor is designed to provide current transfer operations in Continuous Conduction Mode (CCM) for high output power systems rated above 150W. Its main features include: built-in green-mode function, highly integrated Over Temperature Protection (OTP), Over Voltage Protection (OVP), Under Voltage Protection (UVP), Over Power Protection (OPP), Short Circuit Protection (SCP) and Brown-Out protection. Its patent amplifier technology also improves output dynamic response. In addition, SG6931/2 allow maximum PWM cycle adjustment.

The low-watt fly-back PWM IC, its patent Green Mode technology, which realizes super-low standby power and built-in synchronized slope compensation, greatly improves system stability. In addition, it also features constant power output limits, programmable PWM frequency, Cycle-by-cycle Current limiting, and many other features.

The highly-integrated supervisor IC has overall supervising and protecting functions that can provide complete protection for power systems. The SG6516 provides two 12V Over Voltage Protection (OVP), Under Voltage Protection (UVP), and Over Current Protection (OCP) functions. Furthermore, it also features highly precise VRI & VPGI, built-in 20mS OCP timing delay protection, 300mS power good signal protection, and PSON controlling switch signals.