Selecting The Perfect Magnetic Cores For SMPS Transformers-converted

1. Selecting The Perfect Magnetic Cores For SMPS Transformers

2. Overview Switch mode power supply (SMPS) employ efficient transformers to deliver power to commercial and industrial electronic networks. They are typically favoured because of their capacity to offer electrical networks with a controlled output voltage. Choosing the proper sort of magnetic cores while developing these transformers is critical to ensuring their performance. The selection of these cores is determined by three transformer characteristics: power needs, frequency, and switching topology. In this article, we will look at SMPS transformers, their many types, and how to choose the best core material for them. 2

3. HELLO! I am Rahul Pal I am here because I love to give presentations. You can find me at @cosmoferrites 3

4. Transformers1 What are SMPS Transformers? Let’s start with the short about SMPS 4

5. “ SMPS transformers convert alternating current (AC) mains electricity to direct current (DC) output voltage. When the power is turned on, the alternating current is filtered by a capacitor and transformed from alternating current voltage to unregulated direct current voltage. 5

6. Common applications of SMPS transformers are: ◉ Power sourcing equipment ◉ Communication devices ◉ Medical devices ◉ Commercial power supplies ◉ Audio-visual products ◉ Security systems The SMPS transformer converts the unregulated DC Voltage into regulated DC voltage at varying voltage levels using a regulator. . 6

7. Types of SMPS Transformer ◉ Isolated Transformer ◉ Non-Isolated Transformer 7

8. 1. Isolated Transformer 2. Non-Isolated Transformer Isolated SMPS transformers are ones that are separated from the rest of the circuit that they power. They are used to distinguish between switches and output. The secondary winding of this SMPS aids in energy storage. They are classified into two types: Non-Isolated SMPS transformers do not have isolated input and output circuitry. When there is a little shift in voltage levels, they are recommended. As a DC- DC Converter, they assist in stepping up or stepping down voltages. They are classified into three types: ◉ Bucks Converter (Step-Down) ◉ Boost Converter (Step-Up) ◉ Buck-Boost (Step-Down/Step-Up) Converter ◉ Forward Converter ◉ Flyback Converter 8

9. How to select ideal cores for SMPS Transformers? #1 Core Type Choosing the proper sort of magnetic cores while developing these transformers is critical to ensuring their performance. The selection of these cores is determined by three properties of the transformers: #2 Core Shape To reduce core losses in the high- frequency SMPS transformer, you must choose the right core shape. Along with this, the window configuration is an important factor to consider in the core forms. ◉ EFD & EPC cores ◉ EE & EF cores ◉ ETD & EER cores ◉ PQ cores & POT Cores ◉ Power necessities ◉ Frequency ◉ Topology of Switching 9

10. Continued… #3 Core Size Another critical issue is selecting the appropriate core size for your SMPS transformer design. #4 Core Losses Core losses in transformers arise as a result of alternating magnetic flux in the core. When this occurs, the operational flux density must be determined in order to calculate the core loss. For the transformer to work efficiently, losses must be kept to a minimum. The core area is calculated by multiplying the core cross-section area by the winding window area. This approach is used to estimate the core size of an application at the beginning. 10

11. Conclusion A proper selection of the right magnetic cores will help you ensure less heat generation, less power wastage, and enhance the efficiency of your SMPS transformer. 11

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