DC-DC Converters deliver 94% efficiency at 1 MHz.
Press Release Summary:
Operating from 500 kHz to 2 MHz switching frequency, MAX15038 and MAX15039 deliver up to 4 and 6 A output current, respectively, and enable implementation of all-ceramic capacitor designs. User-selectable, fixed-frequency PWM and pulse-skipping modes ensure optimal efficiency during light loads. Housed in 4 x 4 mm TQFN package, synchronous converters operate from 2.9-5.5 V supply and provide ±1% output voltage accuracy over line, load, and temperature variations.
Original Press Release:
Highly Efficient, 2MHz Synchronous DC-DC Converters Enable All-Ceramic-Capacitor Designs
2MHz, synchronous DC-DC converters deliver 4A and 6A output current.
SUNNYVALE, CA-May 13, 2009-Maxim Integrated Products (NASDAQ: MXIM) introduces the MAX15038/MAX15039, small, synchronous DC-DC converters that deliver up to 4A and 6A of output current, respectively. Operating from a 500kHz to 2MHz switching frequency, these devices enable the implementation of compact, all-ceramic-capacitor designs. User-selectable, fixed-frequency PWM, and pulse-skipping modes ensure high efficiency during light loads, while integrated low-resistance MOSFETs maximize conversion efficiency at heavy loads. In all, the MAX15038/MAX15039 deliver over 94% conversion efficiency (at 1MHz), making them ideal for a variety of point-of-load applications, such as those found in telecom, networking, storage, and server equipment.
The MAX15038/MAX15039 integrate a high-bandwidth (28MHz) voltage-error amplifier, which can be combined with a voltage-mode control architecture to enable the implementation of type III compensation. This topology maximizes bandwidth, improves transient response, and minimizes output capacitance, thus allowing an all-ceramic-capacitor design.
These devices operate from a 2.9V to 5.5V supply, and provide ±1% output-voltage accuracy over line, load, and temperature variations. Other features include two 3-state inputs to select one of nine preset outputs, an external reference input for tracking applications, programmable soft-start, and the ability to sink and source current at the output for memory applications. Additionally, the output voltage can be adjusted to any customer value with two external resistors.
The MAX15038/MAX15039 are available in a space-saving, 4mm x 4mm TQFN package, and are fully specified over the -40°C to +85°C extended temperature range. Prices start at $2.73 (1000-up, FOB USA).
Maxim Integrated Products is a publicly traded company that designs, manufactures, and sells high-performance semiconductor products. The Company reported revenue in excess of $2 billion for fiscal 2008. Maxim was founded over 25 years ago with the mission to deliver innovative analog and mixed-signal engineering solutions that add value to its customers' products. To date, it has developed over 5900 products serving the industrial, communications, consumer, and computing markets. For more information, go to www.maxim-ic.com.
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