ON Semiconductor has announced that Electronic Products China (EPC) magazine has presented the company with a 'Top 10 DC-DC 2005' award for its NCP4330 MOSFET driver.
This device delivers improved efficiency when implemented in forward converters most commonly found in ATX and high-power switch mode power supplies (SMPS). This is the third consecutive year that ON Semiconductor has won the award from EPC.
The NCP4330 houses a dual MOSFET driver intended to be used as a companion chip in AC-DC or DC-DC multi-output post-regulated power supplies. Being directly fed by the secondary AC signal, the device minimises power dissipation while reducing the surrounding part count. Furthermore, the implementation of an N-Channel MOSFET gives the NCP4330-based applications a significant advantage in terms of efficiency.
"To have our device recognised by a leading magazine such as Electronic Products China for the third year running is a testament to our power management leadership," said Hemen Cheng, business director of ON Semiconductor Analog Products Group for Asia Pacific. "The NCP4330 MOSFET driver provides a more efficient way to convert a 3,3 V output from a 5 V power train than commonly-used magnetic amplifier control circuits, delivering maximum efficiency for ATX and SMPS power supplies."
The NCP4330 features drive outputs for series FETs and free-wheeling synchronous FETs, to deliver higher efficiency than silicon rectifiers generally used for this purpose. When compared with traditional magnetic amplifier control circuit solutions, this device offers more compact and cost-effective implementation. The NCP4330 offers an efficient means of deriving 3,3 V or other outputs from the 5 V power train, while not requiring additional windings or terminals on the power supply's power transformer. The secondary AC signal directly feeds the NCP4330 to minimise power dissipation, while reducing the power circuit's overall part count.
The overlap management technique supports soft switching, which results in efficient higher frequency operation. It also integrates under-voltage lockout and thermal shutdown for rugged designs.
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