Technical Information Site of Power Supply Design

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EMC

The EMC Basics

EMC

The EMC Basics

It shows the basic contents from the definition of EMC to types of noise, and the switching power supply noises which are the main issue of the seminar.

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The Noise Countermeasures Basics

EMC

The Noise Countermeasures Basics

It shows the basic contents for procedures in noise countermeasures and dealing with noise using capacitors and inductors.

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【HAND BOOK】Switching Power Supply
Basic of EMC and Noise Countermeasures

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EMC

【HAND BOOK】Switching Power Supply Basic of EMC and Noise Countermeasures

This is a handbook on the basics of EMC (electromagnetic compatibility) and noise countermeasures for switching power supplies. Based on the understanding of the basics of noise, it explains the noise countermeasures using capacitors and inductors in switching power supplies.

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AC/DC

Evaluation and Finding of Isolated
Flyback Converter

AC/DC

Evaluation and Finding of Isolated Flyback Converter

ROHM's seminar materials provided at the seminar venue.
Evaluation methods and check points for a flyback converter designed with "Design Example for PWM Flyback Converter" seminar material.

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Methods of Designing Non-isolated
PWM Flyback Converter

AC/DC

Methods of Designing Non-isolated PWM Flyback Converter

ROHM's seminar materials provided at the seminar venue.
Explanations how to design a non-isolated buck converter using an AC/DC converter IC, as a next trial.

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Basic of AC/DC Conversion

AC/DC

Basic of AC/DC Conversion

ROHM’s seminar materials provided at the seminar venue.
Basic studies to understand AC/DC converters and to go designing.

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Design Example for PWM Flyback Converter

AC/DC

Design Example for PWM Flyback Converter

ROHM’s seminar materials provided at the seminar venue. Explanation how to design a flyback converter using a power supply IC.

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【HAND BOOK】Basics of AC/DC Converter
and Design Procedures

AC/DC

【HAND BOOK】Basics of AC/DC Converter and Design Procedures

A hand book for beginners to AC/DC converter design, covering the basics of AC/DC conversion and various conversion methods, as well as the procedures and issues involved in designing an AC/DC converter.

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DC/DC

PCB Layout and Selection of Peripheral Parts

DC/DC

PCB Layout and Selection of Peripheral Parts

ROHM' seminar materials provided at the seminar venue.
Detailed explanations for performance-critical PBC layout and selection for L, Cin and Cout as important external components for designing DC/DC converter.

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Characteristics of Switching Regulators and
evaluation methods

DC/DC

Characteristics of Switching Regulators and evaluation methods

ROHM’s seminar materials provided at the seminar venue. Understanding characteristics of switching Regulators, which are needed for consideration to choose a switching regulator and verification of the designed circuit. And it also shows how to evaluate them.

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Basic of Linear Regulators and Switching
Regulators

DC/DC

Basic of Linear Regulators and Switching Regulators

ROHM’s seminar materials provided at the seminar venue.
Basic studies for linear regulators and switching regulators as a DC/DC converter.

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【HAND BOOK】
Step-Down DC/DC Converter Examination of Losses

DC/DC

【HAND BOOK】 Step-Down DC/DC Converter Examination of Losses

A hand book to study losses of synchronous rectifying step-down converters showing definitions of losses, relations to heat generation, loss equations for places at which losses occur in a circuit, examples of thermal calculation, relations to applications and Losses, and so on.

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【HAND BOOK】
Linear Regulator Basics

DC/DC

【HAND BOOK】 Linear Regulator Basics

This is a hand book for understanding the basics of linear regulators, such as operating principles, classification, characteristics by circuit configuration, advantages and disadvantages. In addition, typical specifications of linear regulators, efficiency and thermal calculations are also explained.

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【HAND BOOK】
Switching Regulator Basics

DC/DC

【HAND BOOK】 Switching Regulator Basics

The basics of step-down switching regulators, including their operation and functions, are explained. Comparison with linear regulators, synchronous rectification and diode rectification, control method, auxiliary functions, etc. are also explained.

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【HAND BOOK】
DC/DC Buck Converter PCB Layout Basics

DC/DC

DC/DC Buck Converter PCB Layout Basics

This hand book shows the basics and examples of board layout for DC/DC buck converters.
It explains the concept and precautions of PCB layout, which also greatly affects the stability of switching type DC/DC converters.

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SiC

Silicon Carbide Power Devices
Understanding & Application Examples Utilizing the Merits

SiC

ROHM’s seminar materials provided at the seminar venue. Basic properties of silicon carbide(SiC) which has the potential for minimizing the size of power products, reducing power consumption, and enhancing efficiency, how to use SiC diodes and SiC MOSFETs, and application examples utilizing the merits are described.

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Si

Silicon Power Devices
Application Examples Utilizing the Merits

Si

ROHM’s seminar materials provided at the seminar venue. Silicon base power devices continue its evolution for the market demands of product power saving and efficiency enhancing. Basic knowledge to selection methods for diodes and MOSFETs, the latest device properties, and application examples are described.

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Motor

Motor Type Classification and Application Overview

Motor Type Classification and Application Overview

This is a handout from a seminar hosted by ROHM.
In addition to explaining the types and structures of motors, it provides an overview of motor drive systems in each field.

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Stepper Motors:Structure, Operating Principle, Drive Method, Features, and Applications

Stepper Motors:Structure, Operating Principle, Drive Method, Features, and Applications

This is a handout from a seminar hosted by ROHM.
It explains the structure, operating principle, and drive method of stepping motors, and summarizes their features and application examples.

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Principles of Motor Rotation and Power Generation

Principles of Motor Rotation and Power Generation

This is a handout from a seminar hosted by ROHM.
This is an explanation of the basics of understanding motors: electric current and magnetic field, motor rotation and power generation principles.

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Overview of Brushed DC Motor Structure, Operating Principle, Drive Method, Characteristics, Features, and Applications

Overview of Brushed DC Motor Structure, Operating Principle, Drive Method, Characteristics, Features, and Applications

This is a handout from a seminar hosted by ROHM.
Basic overview of brushed motors, including structure, principle of operation, drive method, and features.

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Brushed DC Motor H-Bridge Drive/BTL Amp Drive

Brushed DC Motor H-Bridge Drive/BTL Amp Drive

Explanation of H-bridge drive circuit and BTL amplifier drive circuit for brushed DC motors.

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Brushed DC Motor PWM /1-Switch/Half-Bridge Drive

Brushed DC Motor PWM /1-Switch/Half-Bridge Drive

Explanation of PWM drive circuit, single-switch drive circuit, and half-bridge drive circuit for brushed DC motors.

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