Transcription of Section 4 – Power Transformer Design
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Section 4 – Power Transformer Design
4-1 Section 4 Power Transformer DesignPower Transformer DesignThis Section covers the Design of Power trans-formers used in buck-derived topologies: forwardconverter, bridge, half-bridge, and full-wave center-tap. Flyback transformers (actually coupled induc-tors) are covered in a later Section . For more spe-cialized applications, the principles discussed hereinwill generally of a TransformerThe purpose of a Power Transformer in Switch-Mode Power Supplies is to transfer Power efficientlyand instantaneously from an external electrical sourceto an external load. In doing so, the Transformer alsoprovides important additional capabilities: The primary to secondary turns ratio can be es-tablished to efficiently accommodate widely dif-ferent input/output voltage levels. Multiple secondaries with different numbers ofturns can be used to achieve multiple outputs atdifferent voltage levels.
Mode Power Supplies is to transfer power efficiently and instantaneously from an external electrical source to an external load. In doing so, the transformer also provides important additional capabilities: • The primary to secondary turns ratio can be es-tablished to efficiently accommodate widely dif-ferent input/output voltage levels.
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