Power chip

The FSL117MRIN is an integrated Pulse Width Modulation (PWM) Controller and 700V SenseFET designed for off-line Switch Mode Power Supplies (SMPS) with minimal external parts count. PWM controller includes integrated fixed frequency oscillator, line overvoltage protection (LOVP), undervoltage lockout (UVLO), leading edge spacing (LEB), optimized gate drivers, internal soft start, temperature compensation for loop compensation Accurate current source, and self-protection circuit. Compared to discrete MOSFET and PWM controller solutions, the FSL117MRIN reduces total cost, parts count, size and weight; while improving energy efficiency, productivity and system reliability. This device provides the basic platform for cost-effective design of flyback converters.

The NCP13992 is a high-performance current-mode controller for half-bridge resonant converters. The controller implements 600 V gate drivers, which simplifies layout and reduces external parts count. The built-in undervoltage input function simplifies the implementation of this controller in all applications. In applications that require a PFC pre-stage, the NCP13992 has a dedicated output to drive the PFC controller. This feature, combined with dedicated noise-free skip mode technology, further improves the light load efficiency of the entire application. The NCP13992 provides a set of protection features for safe operation in any application. These include: overload protection, overcurrent protection to place hard switching cycles, undervoltage detection, open optocoupler detection, automatic dead time adjustment, overvoltage (OVP) and overtemperature (OTP) protection.