ISL6558CRZ

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• Introduction:The ISL6558CRZ is a switchmode power supply (SMPS) controller from Intersil that is specifically designed for offline low-power applications such as compact AC adapter, cordless phones and personal computers. It provides both high efficiency and cost-effective solution for entry-level power supplies.
• Application Field:The ISL6558CRZ includes all the necessary elements for a cost-effective and space-saving SMPS. It is particularly suitable for offline low power applications with both low cost and high power conversion efficiency. The most suitable application field is AC adaptors, cordless phones and other consumer electronic devices. The ISL6558CRZ can provide stable, adjustable output voltage with no external components.
• Working Principle:The ISL6558CRZ works by switching the output voltage across a transformer to regulate the output voltage. The input is rectified and smoothed by a lower voltage power amplifier that feeds the power stage, which then switches the output voltage across the transformer secondary. This process repeats at a set frequency, thus regulating the output voltage. The current through the output inductor provides a continuous output voltage level.The device also includes an internal MOSFET driver stage which reduces the complexity of the external circuit, thus providing a cost effective solution.
• Conclusion:The ISL6558CRZ from Intersil is a switchmode power supply (SMPS) controller that provides a cost-effective and space-saving solution for low-power applications. The device includes all necessary elements and is most suitable for offline AC adaptors, cordless phones and other consumer electronic devices. It works by switching the output voltage across a transformer to regulate the output voltage , thus providing a stable and adjustable output. The switching process is simplified by an internal MOSFET driver stage, resulting in a cost-effective solution.

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