https://www.fairchildsemi.com/rss/online_seminars.xml Thu, 25 Aug 2011 14:00:00 EST eng Fairchild Semiconductor Online Seminars https://www.fairchildsemi.com/onlineseminars/index.html#wp005b This PDF explains the principles of AC/DC converters in flyback topology having a high power factor input and a constant current output. The most commonly used mode of operation for this purpose is boundary conduction mode (BCM). The basics of this mode are developed and its drawbacks are made clear. A simple method for improving power factor is introduced and explained in detail. Operating in DCM mode improves power factor and THD while reducing the peak drain voltage. A quick design example is given and the special issues of driving high power LEDs are explained. 2010-2011 Power Seminars Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#wp005b This Whitepaper explains the principles of AC/DC converters in flyback topology having a high power factor input and a constant current output. The most commonly used mode of operation for this purpose is boundary conduction mode (BCM). The basics of this mode are developed and its drawbacks are made clear. A simple method for improving power factor is introduced and explained in detail. Operating in DCM mode improves power factor and THD while reducing the peak drain voltage. A quick design example is given and the special issues of driving high power LEDs are explained. 2010-2011 Power Seminars Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#wp002b This PDF describes the driving methods and layout requirements for fast switching MOSFETs. Power MOSFET technology continues to evolve towards higher cell density for lower on-resistance. However, there are silicon limits for a significant reduction in the on-resistance with the conventional planar MOSFET technology due to the exponential increase in onresistance with increasing breakdown voltage. One approach to overcome this limitation is to use Super-Junction technology in high voltage power MOSFETs. This technology dramatically reduces both on-resistance and parasitic capacitances. With smaller parasitic capacitances, these Super-Junction MOSFETs have extremely fast switching characteristics and as a result, reduced switching losses. This switching behavior occurs with greater dv/dt and di/dt that affects switching performance through parasitic components in the devices and on the printed circuit board and influences the EMI performance of the entire system. An optimized design is very important to operate high speed MOSFETs. 2010-2011 Power Seminars Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#wp002b This WhitePaper describes the driving methods and layout requirements for fast switching MOSFETs. Power MOSFET technology continues to evolve towards higher cell density for lower on-resistance. However, there are silicon limits for a significant reduction in the on-resistance with the conventional planar MOSFET technology due to the exponential increase in onresistance with increasing breakdown voltage. One approach to overcome this limitation is to use Super-Junction technology in high voltage power MOSFETs. This technology dramatically reduces both on-resistance and parasitic capacitances. With smaller parasitic capacitances, these Super-Junction MOSFETs have extremely fast switching characteristics and as a result, reduced switching losses. This switching behavior occurs with greater dv/dt and di/dt that affects switching performance through parasitic components in the devices and on the printed circuit board and influences the EMI performance of the entire system. An optimized design is very important to operate high speed MOSFETs. 2010-2011 Power Seminars Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#wp006b Increasing power density, faster switching and higher currents force designers to spend more time both considering the effects of electromagnetic interference (EMI) and debugging a design that has EMI problems but is otherwise complete. This PDF explains the different types of EMI and their coupling mechanisms and the existing EMI regulations. The most frequent noise sources, transmission paths and receiver sensitivity are examined. Based on real designs and measurements, specific procedures are recommended for use throughout the design cycle, to make the power supply work reliably and pass EMI testing. 2010-2011 Power Seminars Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#wp006b Increasing power density, faster switching and higher currents force designers to spend more time both considering the effects of electromagnetic interference (EMI) and debugging a design that has EMI problems but is otherwise complete. This WhitePaper explains the different types of EMI and their coupling mechanisms and the existing EMI regulations. The most frequent noise sources, transmission paths and receiver sensitivity are examined. Based on real designs and measurements, specific procedures are recommended for use throughout the design cycle, to make the power supply work reliably and pass EMI testing. 2010-2011 Power Seminars Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#wp001b The environmental impact of energy consumed by electrical appliances when not in use has attracted growing attention in the international community. This PDF discusses how the selection of passive components in switched-mode power supplies (SMPSs) affects standby power consumption. Based on analysis, this paper presents how to select passive components to minimize the standby power consumption of SMPSs. The validity of the proposed selection guideline is verified with a 50W prototype power supply. 2010-2011 Power Seminars Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#wp001b The environmental impact of energy consumed by electrical appliances when not in use has attracted growing attention in the international community. This WhitePaper discusses how the selection of passive components in switched-mode power supplies (SMPSs) affects standby power consumption. Based on analysis, this paper presents how to select passive components to minimize the standby power consumption of SMPSs. The validity of the proposed selection guideline is verified with a 50W prototype power supply. 2010-2011 Power Seminars Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#wp004b The environmental impact of energy consumed by electrical appliances when not in use has attracted growing attention in the international community. This PDF discusses how the selection of passive components in switched-mode power supplies (SMPSs) affects standby power consumption. Based on analysis, this paper presents how to select passive components to minimize the standby power consumption of SMPSs. The validity of the proposed selection guideline is verified with a 50W prototype power supply. 2010-2011 Power Seminars Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#wp004b The environmental impact of energy consumed by electrical appliances when not in use has attracted growing attention in the international community. This WhitePaper discusses how the selection of passive components in switched-mode power supplies (SMPSs) affects standby power consumption. Based on analysis, this paper presents how to select passive components to minimize the standby power consumption of SMPSs. The validity of the proposed selection guideline is verified with a 50W prototype power supply. 2010-2011 Power Seminars Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#wp003b In many switching power converters, rectifier diodes are used to obtain the DC output voltage. The conduction loss of a diode rectifier contributes significantly to the overall power loss, especially for low-voltage, high-current converter applications. The conduction loss of a rectifying diode is given by the product of its forward-voltage drop and forward conduction current. By replacing the rectifier diode with a MOSFET operated as a synchronous rectifier (SR), the equivalent forward-voltage drop can be lowered and, consequently, the conduction loss can be reduced. Since SRs are active devices, the gate driving method and proper timing are critical for obtaining high efficiency. This PDF describes the benefits and unique challenges of implementing MOSFETs as SR devices in forward converter applications. Trade-offs and challenges between self-driven, hybrid self-driven, and control-driven SR techniques are discussed in detail. A unique control-driven, primary-side triggering SR drive solution is introduced and validated in a 300W, off-line, two-switch forward converter. 2010-2011 Power Seminars Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#wp003b In many switching power converters, rectifier diodes are used to obtain the DC output voltage. The conduction loss of a diode rectifier contributes significantly to the overall power loss, especially for low-voltage, high-current converter applications. The conduction loss of a rectifying diode is given by the product of its forward-voltage drop and forward conduction current. By replacing the rectifier diode with a MOSFET operated as a synchronous rectifier (SR), the equivalent forward-voltage drop can be lowered and, consequently, the conduction loss can be reduced. Since SRs are active devices, the gate driving method and proper timing are critical for obtaining high efficiency. This WhitePaper describes the benefits and unique challenges of implementing MOSFETs as SR devices in forward converter applications. Trade-offs and challenges between self-driven, hybrid self-driven, and control-driven SR techniques are discussed in detail. A unique control-driven, primary-side triggering SR drive solution is introduced and validated in a 300W, off-line, two-switch forward converter. 2010-2011 Power Seminars Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer10 This PDF teaches "how to" design an isolated constant current source to drive high power LED's from an AC power line. The constant current source is built using a flyback topology and has an efficiency greater than 80%. Conventional current sources need many components for this. This application is a low-cost solution based on an innovative circuit (patent filed) using a Fairchild Power Switch (FPS). The converter is a primary side regulated removing the need for an optocoupler and other additional components. Lighting Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer10 This WhitePaper teaches "how to" design an isolated constant current source to drive high power LED's from an AC power line. The constant current source is built using a flyback topology and has an efficiency greater than 80%. Conventional current sources need many components for this. This application is a low-cost solution based on an innovative circuit (patent filed) using a Fairchild Power Switch (FPS). The converter is a primary side regulated removing the need for an optocoupler and other additional components. Lighting Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#cc11 In this PDF, a brushless direct current (BLDC) fan motor driver system using sinusoidal PWM (SPWM) is introduced. The driver board is assembled in the motor to minimize the system size. Based on the signal from the hall position sensor on the board, the controller generates the SPWM input for the power module to drive the BLDC motor. Because it is a sinusoidal PWM instead of a square PWM, both vibration and noise are lower. Experimental results are presented to verify the stability of the driver system. Motor Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#cc11 In this WhitePaper, a brushless direct current (BLDC) fan motor driver system using sinusoidal PWM (SPWM) is introduced. The driver board is assembled in the motor to minimize the system size. Based on the signal from the hall position sensor on the board, the controller generates the SPWM input for the power module to drive the BLDC motor. Because it is a sinusoidal PWM instead of a square PWM, both vibration and noise are lower. Experimental results are presented to verify the stability of the driver system. Motor Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#cc12 Evaluations in surface mount board assembly are conducted for two advanced packages, the PQFN3x3 and PQFN5x6. These packages offer very low inductance for better circuit performance. This PDF will provide practical guidance about PCB mounting and thermal management. It will evaluate processes such as stencil printing, component placement and reflow. Stencil design has shown to be the most critical. In the reflow process, exposure to temperature above its rating will result in reliability risks. Because of this risk, the thermocouple location must be considered in temperature profiling. Temperature cycle test, drop test, vibration and bending tests are conducted to determine reliability of the assembly process. Thermal simulation is conducted using ANSYS® software, showing the effect if voids are present in the solder between the package terminals and the land pad. Finally, recommendations are presented to ensure successful assembly. Packaging Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#cc12 Evaluations in surface mount board assembly are conducted for two advanced packages, the PQFN3x3 and PQFN5x6. These packages offer very low inductance for better circuit performance. This WhitePaper will provide practical guidance about PCB mounting and thermal management. It will evaluate processes such as stencil printing, component placement and reflow. Stencil design has shown to be the most critical. In the reflow process, exposure to temperature above its rating will result in reliability risks. Because of this risk, the thermocouple location must be considered in temperature profiling. Temperature cycle test, drop test, vibration and bending tests are conducted to determine reliability of the assembly process. Thermal simulation is conducted using ANSYS® software, showing the effect if voids are present in the solder between the package terminals and the land pad. Finally, recommendations are presented to ensure successful assembly. Packaging Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer809 There are several alternatives to the widely used hard switched flyback topology which still has its place in many applications. This PDF identifies areas where new approaches provide performance and total system cost advantages. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer1127 Power MOSFETs require a gate drive circuit to translate the on/off signals from an analog or digital controller into the power signals necessary to control the MOSFET. This PDF provides details of MOSFET switching action in applications with clamped inductive load, when used as a synchronous rectifier, and driving pulse/gate drive transformers. Potential driver solutions including discrete and integrated driver designs are discussed. MOSFET driver datasheet current ratings are examined and circuits are presented to assist users in evaluating the performance of drivers on the lab bench. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer1127 Power MOSFETs require a gate drive circuit to translate the on/off signals from an analog or digital controller into the power signals necessary to control the MOSFET. This WhitePaper provides details of MOSFET switching action in applications with clamped inductive load, when used as a synchronous rectifier, and driving pulse/gate drive transformers. Potential driver solutions including discrete and integrated driver designs are discussed. MOSFET driver datasheet current ratings are examined and circuits are presented to assist users in evaluating the performance of drivers on the lab bench. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer802 This PDF explains what Unclamped Inductive Switching is and why it is important to the designer. Understand the UIS failure mechanism within a power MOSFET, determine the UIS capability of a power MOSFET and interpret the Fairchild single pulse UIS data sheet graph. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#cc14 Auxiliary power supplies are required to have low standby power consumption at light load conditions. These power supplies also offer desirable features such as low cost, high efficiency and a Line Under Voltage Lockout (UVLO) function to detect the input voltage so the main power supply will not have to operate at low input voltage ranges. Fairchild's FSQ510 has been specifically designed for low power consumption and valley switching control and is ideal for auxiliary power supplies. This PDF outlines a design procedure for an auxiliary power supply using the FSQ510. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#cc14 Auxiliary power supplies are required to have low standby power consumption at light load conditions. These power supplies also offer desirable features such as low cost, high efficiency and a Line Under Voltage Lockout (UVLO) function to detect the input voltage so the main power supply will not have to operate at low input voltage ranges. Fairchild's FSQ510 has been specifically designed for low power consumption and valley switching control and is ideal for auxiliary power supplies. This WhitePaper outlines a design procedure for an auxiliary power supply using the FSQ510. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#cc13 Among various kinds of soft-switching converters, the asymmetric PWM half-bridge converter has drawn considerable attention due to its simplicity, inherent zero voltage switching (ZVS) capability and fixed-frequency operation. This PDF presents an analysis and reviews practical design considerations for the asymmetric half-bridge converter. It includes designing the transformer and selecting the components. The step-by-step design procedure explained with a design example will help engineers design the asymmetric half bridge converter. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#cc13 Among various kinds of soft-switching converters, the asymmetric PWM half-bridge converter has drawn considerable attention due to its simplicity, inherent zero voltage switching (ZVS) capability and fixed-frequency operation. This WhitePaper presents an analysis and reviews practical design considerations for the asymmetric half-bridge converter. It includes designing the transformer and selecting the components. The step-by-step design procedure explained with a design example will help engineers design the asymmetric half bridge converter. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer2 Recently the, LLC resonant converter has drawn a lot of attention due to its advantages over the conventional series resonant converter and parallel resonant converter; narrow frequency variation over wide load and input variation and Zero Voltage Switching (ZVS) of the switches for entire load range. This PDF will discuss the analysis and practical design considerations of a LLC-type resonant converter. Included in this discussion will be the design of a transformer and the selection of components, a step-by-step design procedure, and a design example that will help engineers design the LLC resonant converter easily. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer2 Recently the, LLC resonant converter has drawn a lot of attention due to its advantages over the conventional series resonant converter and parallel resonant converter; narrow frequency variation over wide load and input variation and Zero Voltage Switching (ZVS) of the switches for entire load range. This WhitePaper will discuss the analysis and practical design considerations of a LLC-type resonant converter. Included in this discussion will be the design of a transformer and the selection of components, a step-by-step design procedure, and a design example that will help engineers design the LLC resonant converter easily. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer1129 New AC power supply designs in the range of 200W - 500W increasingly require power factor correction (PFC) which reduces the energy wasted in the power utility supply lines and increases the maximum power which can be drawn from a power outlet. This PDF describes the design of a two switch forward power supply with a continuous PFC front end based on the FAN4800. Design options for such a power supply are reviewed. Practical topics including layout, EMI, magnetic design are discussed with the aim of helping practicing engineers to accelerate and improve their designs. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer1129 New AC power supply designs in the range of 200W - 500W increasingly require power factor correction (PFC) which reduces the energy wasted in the power utility supply lines and increases the maximum power which can be drawn from a power outlet. This WhitePaper describes the design of a two switch forward power supply with a continuous PFC front end based on the FAN4800. Design options for such a power supply are reviewed. Practical topics including layout, EMI, magnetic design are discussed with the aim of helping practicing engineers to accelerate and improve their designs. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#cc17 The design of the main transformer is a critical part of designing a switch mode power supply. Understanding the process of making cores from powder into a final core shape, and understanding the effects of parameters like core loss, permeability and flux density, designers are better able to choose the right material to achieve the smallest size with lowest losses and reduced cost. With the additional understanding of AC losses and layer arrangements, designers can also optimize the windings to create a solid magnetic design with small size and high efficiency. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#cc17 The design of the main transformer is a critical part of designing a switch mode power supply. Understanding the process of making cores from powder into a final core shape, and understanding the effects of parameters like core loss, permeability and flux density, designers are better able to choose the right material to achieve the smallest size with lowest losses and reduced cost. With the additional understanding of AC losses and layer arrangements, designers can also optimize the windings to create a solid magnetic design with small size and high efficiency. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer10 Learn "how to" design an isolated constant current source to drive high power LED's from an AC power line. The constant current source is built using a flyback topology and has an efficiency greater than 80%. Conventional current sources need many components for this. This application is a low-cost solution based on an innovative circuit (patent filed) using a Fairchild Power Switch (FPS). The converter is a primary side regulated removing the need for an optocoupler and other additional components. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer10 Learn "how to" design an isolated constant current source to drive high power LED's from an AC power line. The constant current source is built using a flyback topology and has an efficiency greater than 80%. Conventional current sources need many components for this. This application is a low-cost solution based on an innovative circuit (patent filed) using a Fairchild Power Switch (FPS). The converter is a primary side regulated removing the need for an optocoupler and other additional components. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer816 Choosing the right products for high power systems is a critical challenge. This PDF will introduce new products for the system design of a power supply and frequency inverters that offer better reliability, higher efficiency and a reduction of board space. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer823 This PDF covers EMI Reduction Techniques for Power Supplies: layout, input filter resonance, measuring common mode and differential mode noise separately, comparison of SEPIC and buck converters. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer1218 Circuit simulation tools are useful supplements to breadboarding for gaining fast and detailed design insight. A collection of simulation tips and tricks used by Fairchild's Global Power Resource support group is presented. Interactive on-line design simulation tools and device models for off-line solutions are available on the Fairchild website. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer1218 Circuit simulation tools are useful supplements to breadboarding for gaining fast and detailed design insight. A collection of simulation tips and tricks used by Fairchild's Global Power Resource support group is presented. Interactive on-line design simulation tools and device models for off-line solutions are available on the Fairchild website. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer1204 Half-bridge structures are extensively used in power electronics applications: lighting, power supplies, UPS and motor drives. When these half-bridge circuits are hard switched, the low side diode reverse recovery affects system performance. This PDF reviews the principle of diode reverse recovery and how this affects the semiconductor switch performance. Practical tests showing how di/dt and temperature affect performance are presented. Finally measurements using different devices are compared showing the curves for fast and soft recovery diodes, showing that in some cases, efficiency can be improved by adding capacitance in parallel with the diode. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer1204 Half-bridge structures are extensively used in power electronics applications: lighting, power supplies, UPS and motor drives. When these half-bridge circuits are hard switched, the low side diode reverse recovery affects system performance. This WhitePaper reviews the principle of diode reverse recovery and how this affects the semiconductor switch performance. Practical tests showing how di/dt and temperature affect performance are presented. Finally measurements using different devices are compared showing the curves for fast and soft recovery diodes, showing that in some cases, efficiency can be improved by adding capacitance in parallel with the diode. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#cc15 Boundary conduction mode power factor converters are widely used in lower power off-line power supplies. Their application at higher power levels is less practical due to the high amplitude of the inductor ripple current that puts a burden on the EMI filter and can be a significant source of power dissipation in the boost inductor and power switch of the converter. Interleaving two of these boundary conduction mode converters mitigates the input filter problem and to a certain extent the issue of high RMS currents of the semiconductor devices. Interleaved BCM PFC circuits are becoming popular in the industry. This PDF analyzes the advantages of such a solution, highlights critical design issues related to power factor correction in general, and addresses the specific requirements and potential solutions to control an interleaved boundary conduction mode power factor converter. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#cc15 Boundary conduction mode power factor converters are widely used in lower power off-line power supplies. Their application at higher power levels is less practical due to the high amplitude of the inductor ripple current that puts a burden on the EMI filter and can be a significant source of power dissipation in the boost inductor and power switch of the converter. Interleaving two of these boundary conduction mode converters mitigates the input filter problem and to a certain extent the issue of high RMS currents of the semiconductor devices. Interleaved BCM PFC circuits are becoming popular in the industry. This WhitePaper analyzes the advantages of such a solution, highlights critical design issues related to power factor correction in general, and addresses the specific requirements and potential solutions to control an interleaved boundary conduction mode power factor converter. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#changer726 Driven by new energy efficiency regulations, system designers are increasingly adopting synchronous buck controllers and half-bridge structures. This presents them with the new challenge of designing with power MOSFETs. This PDF provides a basic understanding of MOSFETs with more detailed explanation of synchronous buck and half-bridge structures. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#cc16 The role of the Power MOSFET in achieving high efficiency converter design is the focus of this paper. It gives a brief overview of current low voltage MOSFET trench technologies, along with a discussion of on resistance versus gate charge tradeoffs for MOSFETs optimized for use as either control or synchronous switches. It also covers the importance of the integrated Schottky diode (SyncFET™) in synchronous rectification, and the necessity of packaging technologies with low parasitic inductance and resistance. Power Supplies Thu, 25 Aug 2011 14:00:00 EST https://www.fairchildsemi.com/onlineseminars/index.html#cc16 The role of the Power MOSFET in achieving high efficiency converter design is the focus of this paper. It gives a brief overview of current low voltage MOSFET trench technologies, along with a discussion of on resistance versus gate charge tradeoffs for MOSFETs optimized for use as either control or synchronous switches. It also covers the importance of the integrated Schottky diode (SyncFET™) in synchronous rectification, and the necessity of packaging technologies with low parasitic inductance and resistance. Power Supplies Thu, 25 Aug 2011 14:00:00 EST