Gate Drive Design for Large Die MOSFETs:  The successful design of robust gate drive circuitry for high voltage, very high current MOSFET devices is no different than designing driver circuitry for smaller devices and depends on an understanding of the drive requirements.... Application Note Microsemi APT9302 ( app note added 4/08)

General Purpose Power Supply:  National Semiconductor - Application Note   (app note added 2/06)

Generating Negative 5 Volts from 9 Volt Battery:  A 555 timer can be used to generate a squarewave to produce a negative voltage relative to the negative battery terminal. When the timer output at pin 3 goes positive, the series 22 uF capacitor charges through the diode (D1) to about 8 volts. When the output switches to ground, the 22 uF cap discharges through the second diode (D2) and charges the 100 uF capacitor to a negative voltage. The negative voltage can rise over several cycles to about -7 volts but is limited by the 5.1 volt Zener diode which serves as a regulator.... (added 4/05)

Generating Negative 5 Volts from 9 Volt Battery:  A 555 timer can be used to generate a squarewave to produce a negative voltage relative to the negative battery terminal. When the timer output at pin 3 goes positive, the series 22 uF capacitor charges through the diode (D1) to about 8 volts. When the output switches to ground, the 22 uF cap discharges through the second diode (D2) and charges the 100 uF capacitor to a negative voltage. The negative voltage can rise over several cycles to about -7 volts but is limited by the 5.1 volt zener diode which serves as a regulator.... (added 4/05)

Generating-5V DC from +5V DC:  ASCII format (circuit design added 4/05)

Grounding for Low-and-High-Frequency Circuits:  AN-345 - Analog Devices Application Notes  (app note added 6/06)Know Your Ground and Signal Paths for Effective Designs. Current Flow Seeks Path of Least Impedance-Not Just Resistance....

Half Bridge Inverter has Variable Frequency:  10/09/97 EDN-Design Ideas  /  (added 2/2003) Modern electronic ballasts require added features, such as high-frequency preheat for filaments, nominal lamp-power control, and light-dimming capability. Because the output inverter operates in resonant mode, you can control the power or current of these ballasts simply by varying the switching frequency. To vary the frequency, you can build a simple VCO that uses a half-bridge MOSFET driver (Figure 1). You can use this VCO as the core of a controller for a supply or ballast that requires a variable frequency.

Handling Instructions and Protection Against Electrostatic Discharges:  Application Note - Advanved Power Technology - APT0502  (app note added 6/06)

Handy tool Troubleshoots Feedback Loops:  04/10/97 EDN-Design Ideas / (added 3/03)  

H-Bridge Motor Control:  general introduction to H-Bridges (added 5/02)

Hex Inverter Makes Low Cost Switching Regulator:  05/23/96 EDN-Design Ideas / (added 3/03)   -- Simple and low-cost circuit converts5V to12V

High Current Dual DC/DC Converter Operates from 3.3V Input:  DN218 -  Design Notes (Linear Technology) (app note added 1/06)

High Efficiency Isolated Flyback Supply Without Optoisolator:  DN1011 -  Design Notes (Linear Technology)  (app note added 1/06)

High Frequency and Paralleling Modules for High Current:  Application Note Microsemi formerly Advanced Power APT1204 (app note added 4/08)

High Frequency DC-DC Conversion using High Current Bipolar Transistors: Conversion upto 400kHz using Optimised Geometry Bipolar Devices:  Zetec Semiconductors  - Applications Notes - A discussion of the switching capabilities of Bipolar transistors, including charge analysis and circuit techniques to permit high frequency saturated switching. Circuit examples are presented to illustrate speed-up methods, and charts to demonstrate the resultant efficiency improvements. The report also includes turn-off charge versus bias point characterisation charts, for typical high current low VCE(sat) Bipolar devices, targeted for low voltage and battery applications.   (app note added 2/06)

High Frequency Resonant Half Bridge:  MOS-Gated Power Semiconductors Configured in the ZVT Thyristor-Dual Mode Yield > 95% Converter Efficiency at 1-10 kW, When Resonantly Switched at 20-400 kHz Application Note Microsemi APT9601 (app note added 4/08)

High Performance 3-Phase Power Supply Delivers 65A and High Efficiency over the Entire Load Range:  DN312 -  Design Notes (Linear Technology) (app note added 1/06)

High Performance Frequency Compensation Gives DC-to-DC Converter 75µs Response with High Stability:  DN53 -  Design Notes (Linear Technology) (app note added 1/06)

High Voltage Adjustable Power Supplies:  National Semiconductor - Application Note   (app note added 2/06)

Highly Integrated High Efficiency DC/DC Conversion:  DN98 -  Design Notes (Linear Technology) (app note added 1/06)

High-Voltage MOSFET Behavior In Soft-Switching Converters: Analysis and Reliability Improvements:  The benefits of soft-switching converters, and in particular zero-voltage switching (ZVS, also called zerovoltage-transition [ZVT] or resonant-transition) circuits, are well-known. High-frequency converters powered from high source voltage show significant improvements when operated with soft switching. Application Note Microsemi APT9804_04 ( app note added 4/08)

How to use the Agilent N67xxA Modular Power System to replace an Agilent 662xA:  Agilent Application Note   (added 6/06)

HV91 Series: Designing High-Performance Flyback:  Supertex Semiconductors  (app note added 2/06)

HV9120-Controlled Flyback Converter:  Supertex Semiconductors  (app note added 2/06)

IC and Capacitor Improve Isolated Supply:  09/01/97 EDN-Design Ideas / (added 3/03)  

IGBT Technical Overview:  Application Note - Advanved Power Technology - APT0408  (app note added 6/06)

IGBT Tutorial:  Application Note - Advanved Power Technology - APT0201  (app note added 6/06)

Ignition Coil/Flyback Transformer Based High Voltage Generators:  This page gives my thoughts on how to use a car ignition coil or Flyback transformer as a high voltage generator. The objective is to produce as high a voltage as possible, with as high a power throughput as possible. (added 4/02)

Implementing an RC5051 DC-DC Converter on Pentium II Motherboards / AN-53:  Fairchild Application Notes / (app note added 6/06)

Improving The Full-Bridge Phase-Shift Zvt Converter for Failure-Free Operation Under Extreme Conditions In Welding and Similar Applications:  This paper will identify a mechanism that induces power MOSFET failure when the converter operates into a shortcircuit load, a condition that leads to the MOSFET being turned off while its own intrinsic diode is conducting reverse recovery current at the same time as normal channel current. Application Note Microsemi APT9803 ( app note added 04/08)

Inductor performance in high frequency DC-DC converters:  Coilcraft - Power Magnetics Application Note - (app note added 6/06)

Inductorless Voltage Converter Boosts a Single Lithium Cell:  Maxim Application Note #1791 (app note added 6/06)

Innovative Mounting Techniques Enhance Thermal Performance Of The Surface-Mount D3 Pak Package:  Application Note - Advanved Power Technology - APT9503  (app note added 6/06)

Interfacing the ADSP-BF533/ ADSP-BF561 Blackfin® Processors to High Speed Parallel ADCs:  AN-813 - Analog Devices Application Notes  (app note added 6/06)

Inverter Forms High Efficiency Rail Splitter:  08/01/97 EDN Design Ideas  / (added 3/03)  In Figure 1, a switched-capacitor voltage inverter, IC1, configured as a "rail-splitter," provides a bipolar, dual-rail power supply. The circuit is useful in single-supply systems that include one or more dual-supply ICs. The SOT-23 package and associated components require little board area.

Inverter offers design flexibility:  06/05/00 EDN-Design Ideas / (added 11/05)

Isolated DC/DC Conversion with the LT1425:  DN158 -  Design Notes (Linear Technology) (app note added 6/06)

Isolated Flyback Converter Regulates Without an Optocoupler:  DN260 -  Design Notes (Linear Technology) (app note added 1/06)

Isolated Signal Trims DC/DC Converter:  09/01/95 EDN-Design Ideas / (added 3/03)

Isolated Telecomm Converter Handles 25W:  09/01/97 EDN-Design Ideas / (added 3/03)   -- Telecomm applications in the central office require an isolated5V supply derived from ­48V, this gives out5V at5A from an input voltage of ­36 to ­72V