Comparing N-Channel and P-Channel MOSFETs: Which is best for your application?
This article compares the n-channel and p-channel power MOSFETs, introduces the complete Littelfuse p-channel power MOSFETs portfolio, and explores target applications.
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A full brick package developed by TDK-Lambda, the PF1500B-360, is for high voltage distributed power architectures
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Cosel has announced the launch of the HFA3500TF, a low-profile 3-phase, 3-wire 3500W AC/DC enclosed power supply design optimized for industrial equipment such as semiconductor manufacturing, laser processing machines and robotics. Addressing worldwide applications and 3-Phase Delta or 3-Phase Star networks, the HFA3500TF input voltage embraces a wide operating range of 180VAC to 528VAC. Using the latest ‘energy optimized’, digitally controlled switching topology and Wide Band Gap (WBG) semiconductors, the power supply offers an impressive efficiency figure of up to 94% at 400VAC input and 65VDC output. The HFA3500TF is available in two output voltages, 48VDC and 65VDC, these being adjustable in the range 15% to -50% using the trim function. The compact, low-profile design comes in at just 41mm (1.61 inches) high complete with cover, and features two variable speed cooling fans. For higher power applications the HFA3500TF can be connected in parallel up to ten units and deliver up to 31.5kW.
The HFA3500TF's low-profile design fits into the vertical space of a 1U (44.45 mm) rack unit, clearly advantageous in applications where space is at a premium, facilitating easier integration into compact machines, saving valuable floor or rack space in industrial environments. To ensure highest performance and reliability in such a low-profile package, the power supply has been designed for high performance and optimized to eliminate hot spots and facilitate cooling throughout its componentry. To achieve this, the HFA3500TF combines an innovative mechanical layout with the latest developments in power electronics, such as an optimized digitally controlled switching topology and a power stage with Silicon Carbide (SiC) MOSFETs and diodes, providing up to 94% efficiency at 400VAC input for the 65V output model.
Industrial equipment can be installed all over the world and powered from 200V to 400V grids, requiring the power supply to operate within a wide range of input voltages. As well as reducing single-phase peak loads and optimizing load balancing on their networks, system architects prefer 3-phase power solutions, for which COSEL's HFA3500TF is designed to accommodate 3-phase three-wire delta or 3-phase three-wire star installation.
With an input voltage range of 180 to 528VAC, the HFA3500TF is available in two different output voltages, adjustable by using the built-in potentiometer or the trimming function. The 48VDC/73A unit is adjustable from 24.00 to 55.20VDC and the 65VDC/54A model from 32.50 to 74.75VDC. Under nominal working conditions the output power is 3.5kW.
In addition to the main output, the HFA3500TF includes a 12VDC/1A auxiliary output which can be used for remote ON/OFF. The auxiliary output is isolated from the input, output, and Functional Ground.
The HFA3500TF includes inrush current limiting circuitry, overcurrent and overvoltage protection and thermal protection. Exhibiting versatility and robustness, the power supplies can be operated in an ambient temperature range of -10 to 70C temperature. Two cooling fans with automatic speed control guarantee ventilation of the unit, but depending on the final equipment assembly style and environmental conditions a derating may apply.
for more information visit: www.coseleurope.eu
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