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Diodes, Inc. Intros Hi-Current Hi-V Buck Converter
Westlake Village, CA — Diodes Incorporated has introduced its latest generation 300kHz, 3A Asynchronous PWM Buck Converter, the AP1580. The AP1580 was designed to meet the growing demand for higher efficiencies and smaller form factor packaging required in today's power management designs. The AP1580 with its wide input voltage range of 10 to 40V, and adjustable output voltage from 0.8V to 36V is well suited to support a variety of applications including LCD monitors and TVs, plasma display panels (PDP), power adaptors and battery chargers as well as high end networking and

telecommunications equipment.

The AP1580 converter is fully integrated with an internal switch and is capable of delivering continuous output current up to 3A with excellent line and load regulation characteristics. Higher efficiency is obtained through the use of a low Rdson (80 milliOhms) NMOS power switch. The new converter has a 300kHz fixed switching frequency, which allows the use of smaller external components, thus minimizing required PC board area and total bill of materials cost. In addition, the unit has an enable function that can power down the converter to a low 2 microamperes standby mode making it suitable for use in Energy Star applications such as LCD and plasma display TVs.

Additional features integrated to increase reliability are thermal shutdown, current limiting and short circuit protect. A high performance voltage error amplifier is also implemented on-chip to provide tight voltage regulation accuracy under transient conditions. The feedback loop is also internally compensated thus eliminating the need for additional external components. The AP1580 results in a simple-to-implement and cost-effective power conversion solution offering high power efficiency in a compact form factor. Offered in the small, thermally enhanced, SOP-8L package, the AP1580 requires 5 times less PC board area than the standard TO-220 or TO-263 packages typically used to support 3A drive currents. The unit's wide operating junction temperature ranges from -40°C to +125°C making it well suited to support extended temperature requirements for commercial as well as industrial applications.

For more information, contact: Diodes Inc., 3050 E. Hillcrest Westlake Village, CA 91362-3177. 805-371-4447 fax: 805-381-3838 Web: http://www.Diodeinc.com

 

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