Fairchild Manuals (Industrial)

This application note presents a LED application design guide using BCM Power Factor Correction (PFC) controller for a 200W lighting system. The design procedure is verified through an experimental 200W prototype converter.

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This application note discusses potential failure mode and mechanism in LLC resonant converters and provides a simple and cost-effective solution to prevent failures.

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This article introduces the design guidelines for gate resistance (Rg) of SupreMOS® products in hard switch applications. By optimizing gate drive, higher power conversion efficiency can be achieved. The article also provides the minimum and maximum recommended values of Rg and offers tables for selecting Rg based on different conditions. Additionally, it discusses the considerations for switch losses when using SupreMOS products as replacements for other power MOSFETs.

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This document provides gate resistor design guidelines for SupreMOS® MOSFETs. It discusses the minimum and maximum values of gate resistor to achieve optimal performance in hard-switching applications.

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This application note discusses the advantages of planar technology power MOSFET in discontinuous current mode power factor correction application. In most test conditions, it is cost competitive and provides performance benefits compared to a super-junction technology device. The benefits are verified through mathematical simulation and system-level experiments. A new planar technology power MOSFET from Fairchild shows faster switching characteristics that contribute to higher efficiency and lower device temperature.

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This document introduces the UIS rating system for PowerMOS transistors, which is used to evaluate whether the transistor can withstand the UIS stress level

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This application note introduces Fairchild's single-pulse unclamped inductive switching (UIS) rating curves. These curves are used to evaluate the power MOSFET's tolerance to transient voltage surges under single-pulse UIS conditions. These curves can help designers select the most suitable MOSFET for their application when designing applications.

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This application note introduces UniFET™ II, a new power MOSFET optimized for resonant converters, which provides better reliability and higher efficiency in resonant converters with its robust body diode characteristics

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This application note focuses on the soldering and back-end processing of the MicroFET 1.6x1.6 Dual

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This application note introduces Fairchild Semiconductor's FCS fast body diode MOSFET (AN-7536), which can be used in phase-shifted ZVS PWM full-bridge DC/DC converters. The FCS MOSFET has fast reverse recovery characteristics, which can achieve ZVS switching conditions in phase-shifted bridges, thereby improving efficiency and power density.

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This application note focuses on the soldering and back end processing of the Power33.

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This application note describes assembly guidelines and recommendations for the MicroFET 2x2, including pre-assembly preparation, mounting methods, reflow soldering, and back-end processing.

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This application note focuses on the soldering and back end processing of the MicroFET 2x2

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This document describes a novel method for an off-line power factor correction (PFC) - PWM combo controller. The controller improves power usage efficiency and reduces harmonic content in the line current.

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This document describes a simple and inexpensive method to synchronize a fixed frequency PWM controller to a wide range of frequencies (>2x). It explains why synchronization is needed and presents a popular method of single frequency synchronization, along with its limitations. It then covers the topic of wide frequency range synchronization and presents a block diagram using a novel approach based on a phase locked loop (PLL). A practical design example is provided, complete with design formulas and a schematic for synchronizing the ML4824-1 to any frequency in the 25kHz to 75kHz range. The circuit presented can be used with any controller using a RC generated voltage ramp for the oscillator.

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ML4824 is a high performance power controller launched by Fairchild. This application note introduces the working principle and application circuits of ML4824.

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NDS356AP is a P-Channel logic level enhancement mode power field effect transistor, suitable for low voltage applications such as notebook computer power management, portable electronics, and other battery powered circuits, with features including fast high-side switching and low in-line power loss.

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The NDS8425 is an N-channel MOSFET from Fairchild Semiconductor that uses the Power Trench process for extremely low RDS(ON) and low gate charge. It can be used in DC/DC converters and load switches.

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