Power chip

The FSDM311A integrates a Pulse Width Modulation (PWM) controller and SenseFET and is specifically designed for high-performance offline switch-mode power supplies (SMPS) with minimal external parts count. This device is an integrated high-voltage power switching regulator that combines a VDMOS SenseFET with a voltage-mode PWM control. The integrated PWM controller features include fixed oscillator, undervoltage (UVLO) protection, leading edge spacing (LEB), optimized gate on/off driver, high temperature shutdown (TSD) protection, temperature for loop compensation Compensated precision power sources and fault protection circuits. Compared to discrete MOSFET and controller or RCC switching converter solutions, the FSDM311A device reduces overall parts count, design size, and weight; while improving energy efficiency, productivity, and system reliability. This device provides the basic platform for designing a flyback converter.

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.