New Power Supply Transformers Complement Gate-Driver IC Family

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The new design of the transformer construction targets industrial applications, delivering a rugged and lightweight isolated DC-DC solution while minimizing common-mode noise coupling.

Power Integrations, the leader in gate-driver technology for medium- and high-voltage inverter applications, announced a range of galvanically isolated transformers that provide the correct voltage and power for the company’s SCALE-iDriver™ family of gate drivers.
The new SIT12xxI transformers feature an innovative “isolated wire-in-wire” insulated construction that improves reliability and delivers a high isolation capability combined with low coupling capacitance.
The high isolation capability is achieved without the need for mold compound.
Devices suit both 600 V and 1200 V two-channel SCALE-iDriver gate drivers with 5 V (SIT1253I) or 15 V (SIT1217I) input voltages and 25 V output voltage. The shrouded transformers weigh only 9 g and require no potting, but nonetheless pass tests for extended field life and high resistance to shock and vibration. They meet UL1446, UL61800-5-1, IEC61800-5-1, IEC61558-1 and IEC61558-2-16.

Key Features

  • Dual channel DC/DC transformer optimized for forward converters.
  • Excellent reliability & strong isolation combined with low power isolation.
  • Halogen free and RoHS compliant.
  • UL and VDE approved, simplifying safety certification and reducing time-to-market.

Availabiity

SIT12xxI transformers are available with different winding ratios to accommodate a primary-side supply voltage of either 5 V or 15 V.

Now, priced at US$ 4.00 in quantities of 10,000.

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