Step-Down Controller operates over wide 4.5-28 V input range.
Press Release Summary:
Suited for use in 5 or 12 V-bus applications, MAX15023 dual-output, synchronous step-down controller is capable of driving external MOSFETs to deliver at least 12 A per output. It provides accurate output voltage from 0.6 V to 85% of input voltage, and features adjustable switching frequency, external compensation network, and current limit. Offered in 4 x 4 mm, 24-pin TQFN package, device uses cycle-by-cycle lossless current sensing, eliminating need for external sense resistor.
Original Press Release:
Dual-Output, Synchronous DC-DC Controller with Wide Operating Range Delivers up to 25A
o The MAX15023 is a low-cost, dual-output, synchronous step-down controller capable of driving external MOSFETs to deliver at least 12A per output.
o This device is extremely flexible as it operates over a wide, 4.5V to 28V input range, allowing it to be used in 5V- or 12V-bus applications.
o Additionally, it allows designers to adjust the switching frequency, compensation, and current limit to optimize their designs in terms of space, performance, and cost.
o This combination of versatility and performance makes the MAX15023 suitable for a variety of high-reliability applications such as telecom, networking, storage, and server equipment.
SUNNYVALE, CA-January 26, 2009-Maxim Integrated Products (NASDAQ: MXIM) introduces the MAX15023, a low-cost, dual-output, synchronous step-down controller capable of driving external MOSFETs to deliver at least 12A per output. Operating over a wide, 4.5V to 28V input range, this device integrates a ±1% accurate voltage reference to provide an accurate output voltage from 0.6V to 85% of the input voltage. The switching frequency (200kHz to 1MHz), external compensation network, and current limit can also be adjusted to optimize designs in terms of space, performance, and cost. This combination of versatility and performance makes the MAX15023 suitable for a variety of high-reliability applications such as telecom, networking, storage, and server equipment.
The MAX15023 uses cycle-by-cycle lossless current sensing to reduce power loss and eliminate the need for an external sense resistor. Additionally, the device's adaptive synchronization eliminates external freewheeling Schottky diodes. Other features include the ability to start up monotonically when the output has a prebiased voltage; proprietary, adaptive digital soft-start for controlled turn-on; and two independent enable inputs and two independent power-good indicators with precise turn-on/turn-off thresholds, which can be used for supply monitoring and power sequencing.
The MAX15023 is offered in a thermally enhanced, 4mm x 4mm, 24-pin TQFN package, and is fully specified over the -40°C to +85°C extended temperature range. Prices start at $1.76 (1000-up, FOB USA).
An evaluation kit is available to speed designs-contact the factory for details.
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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