According to the 2013 EU eco-design directive ErP (Energy-related Products) Lot 6, the maximum power consumption of electronic devices in standby mode is to be less than 0.5W. Fairchild Semiconductor has introduced the FSB series of AC regulators, the next-generation FPS (Fairchild Power Switch). It incorporates the company's mWSaver technology to reduce standby and no-load power consumption. A current-mode PWM and an avalanche-rugged 700V SenseFET are integrated in a single package to reduce size and lower system cost. One of five proprietary technologies is the AX-Cap method, which minimises losses in the EMI filter stage by eliminating the X-cap discharge resistors while still meeting IEC61010-1 safety requirements. A green-mode function provides off-time modulation, which linearly decreases the switching frequency at light-load condition to minimise switching losses. Integrated protection features include programmable cycle-by-cycle current limiting, internal open-loop protection, built-in brown-in and brown-out protection, high and low line compensation for constant power limit, over-temperature protection with hysteresis, under-voltage lockout and over-voltage protection. The first product released is the FSB127H with 2A internal MOSFET and in an 8pin dual-inline package.
