What is a Precision Transformer Core Suppliers' SNPS transformer?
SMPS transformers are used in switching power supplies to provide galvanic isolation. The SMPS transformer in the isolated power supply provides a clear barrier to prevent dangerous high voltages from being passed to the output, thereby preventing electric shock at the output. The disadvantage of isolated power supply is low efficiency and large size. Non-isolated SMPS can have efficiencies higher than about 95%, while isolated power supplies are typically 70% to 90% efficient.

Isolated SMPS is less efficient due to the SMPS transformer used in the package. Since these power supplies operate at high voltage/current, they transmit strong magnetic fields to the core of the SMPS transformer. Magnetic cores used in SMPS transformers exhibit hysteresis when the input AC signal oscillates. When the input current is very high, the transformer core is in danger of saturation during operation, resulting in more serious hysteresis and heat dissipation of the core.

SMPS transformer and core material manufacturers often provide hysteresis curves with their components, allowing designers to determine input current limits. Less efficient SMPS units heat up to higher temperatures when operating at high voltage/current, so they require some thermal management strategies to dissipate heat. For high-output power supply units, heatsinks are often used with case-mounted fans to provide adequate cooling.

For more product-related information, please click: Amorphous Nanocrystalline Core Transformer