Premo planar transformers achieves prices of standard technology

Planar transformers have been using more and more in the market as a high efficiency low profile transformer solution in DC/DC high frequency converters in many sectors such as telecommunication, medical equipments, automotive, industrial, avionics, etc., presenting many advantages against standard technology: reduced size, high power handling, low losses, high reliability, low leakage inductance, high repetitively, etc; and its only disadvantage was its higher cost compared with standard technology.

Premo has developed a high performance planar transformer component, presenting all the advantages of the planar technology at the same price or even less than the standard equivalent power transformer. It is designed for battery input voltage (24-48 Vdc) and achieves powers up to 240 W. Switching frequency is defined between 100-300 kHz.

Premo has launched a promotion of the first 10.000 units at 0.60 Eur, much lower cost (45%) than equivalent conventional transformer.

Main characteristics:

• Compact size (35x25mm)
• Low profile (< 10mm height)
• High efficiency up to 99%
• Low leakage inductance (< 300nH)
• Easier cooling (easy to attach a thermal pad on the core)
• High power handling (200 W with natural cooling and 240 W with heatsink)
• Designed with multilayer high Tg PCB
• Low DC and AC winding resistance
• High operating temperature (-40ºC to 105ºC)
• SMD mounting with gull-wing pins avoiding soldering shadows
• High resistance to extreme Pb-free reflow soldering profiles
• According to EN-60950 safety standard

Premo has developed a special PCB layout design in order to allow different inputs (18-72 Vdc) and outputs possibilities (5-30 Vdc) as well as topologies (Forward, Push-Pull, Half-Bridge and Full-Bridge), consisting in parallel or series connection of the output windings. It also includes a 2 turns auxiliary winding to supply PWM controller.

Contact us at info@grupopremo.com for purchase order or any doubt regarding this promotion.