SOURCE: Micrel


December 12, 2011 07:04 ET

New Micrel DC-DC Converter Family Enables Point-of-Load Designs With High Power Density and High Efficiency

SAN JOSE, CA--(Marketwire - Dec 12, 2011) - Micrel, Inc. (NASDAQ: MCRL), an industry leader in analog, high bandwidth communications and Ethernet IC solutions, today rolled out its new SuperSwitcher II™ family of integrated MOSFET buck regulators for high power density DC-DC applications. The new MIC26xxx family comprises six DC-DC buck regulators leveraging Micrel's proprietary HyperSpeed Control™ and HyperLight Load® architecture. The devices target distributed power systems, communications networking and infrastructure, and industrial applications. The MIC26601/901/1201 and the MIC26603/903/1203 are currently available in volume quantities, with 1,000 quantity pricing starting at $1.58/$1.74/$1.88 and $1.62/$1.77/$1.92 respectively. Samples can be ordered at:

"System designers need to implement power supplies that are as efficient and as small as possible," stated Brian Hedayati, marketing vice president for the analog division at Micrel. "Micrel's proprietary HyperSpeed Control and HyperLight Load Control architectures used in SuperSwitcher II family allow designers to create minuscule power supplies optimized for efficiency at the most important power level for each design. The common footprint of Micrel's SuperSwitcher II family also enables maximum design re-use over a wide range of output currents."

The MIC26601/901/1201 and the MIC26603/903/1203 operate with an input supply voltage range from 4.5V to 28V, and deliver an output current of 6A, 9A and 12A respectively. The SuperSwitcher II family has been tailored to be Any Capacitor™ stable, independent of the output capacitance Equivalent Series Resistance (ESR), thus solving the perpetual problem of stability that power designers face when dealing with distributed output capacitance. The SuperSwitcher II family of buck regulators can drive DC-DC loads at more than 95 percent efficiency, operate at 600kHz switching frequency with ±1 percent output voltage accuracy; the output is adjustable down to 0.8V.

The SuperSwitcher II devices have an onboard 5V regulator allowing single-supply operation, an enable pin for very low power shutdown, internal soft start, under-voltage lockout, and internal compensation, in addition to a host of protection features such as pre-bias safe startup, over temperature protection, fold-back current limit and short circuit protection. The MIC26601/901/1201 and the MIC26603/903/1203 buck regulators are available in a thermally enhanced lead-free 28-Lead 5mm x 6mm MLF® package.

About Micrel Technology
HyperSpeed Control and HyperLight Load are patented control architectures developed by Micrel for their latest generation of DC-DC conversion products. "HyperSpeed Control" refers to the ultra-fast load transient response, while "HyperLight Load" refers to the ability to maintain high efficiency even at light loads (80 percent+ at < 1 percent of full load). Micrel developed these architectures to fill the need for unconditional high efficiency, ultra-fast transient response, ease-of-use with few external components and minuscule solution size. The HyperSpeed Control architecture employs a digitally modified, adaptive on-time control and ripple injection technique; the HyperLight Load architecture provides the same performance as HyperSpeed Control when operating under heavy loads. The HyperSpeed Control and HyperLight Load architectures make Micrel's DC-DC regulators and controllers perfect for point-of-load applications requiring tight tolerance and ultra-fast transient response, while minimizing external component count and BOM cost and maximizing efficiency.

About Micrel, Inc.
Micrel, Inc. is a leading global manufacturer of IC solutions for the worldwide analog, Ethernet and high bandwidth markets. The Company's products include advanced mixed-signal, analog and power semiconductors; high-performance communication, clock management, Ethernet switch and physical layer transceiver ICs. Company customers include leading manufacturers of enterprise, consumer, industrial, mobile, telecommunications, automotive, and computer products. Corporation headquarters and state-of-the-art wafer fabrication facilities are located in San Jose, CA, with regional sales and support offices and advanced technology design centers situated throughout the Americas, Europe and Asia. In addition, the Company maintains an extensive network of distributors and reps worldwide. Web:

Note: MLF is a registered trademark of Amkor Technology. Hyper Speed Control, Any Capacitor and SuperSwitcher II are trademarks of Micrel, Inc.

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