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DC/DC regulators aimed at 3.3V, 5V apps

Posted: 18 Nov 2011 ?? ?Print Version ?Bookmark and Share

Keywords:DC/DC regulator? enterprise application? transient response time?

Microsemi Corp. has rolled a line of DC/DC regulators that are based on a flexible architecture exclusive to Microsemi and includes patent-pending control technology. The LX7167 2A, LX7169 3A and LX7165 5A can be used for powering disk drives used in enterprise applications.

According to the company, the DC/DC regulators deliver ultra-fast transient response times, while reducing power dissipation. It eliminates the need for a traditional control loop error amplifier and allows immediate response to load and line disturbances, said the company. In addition, delays associated with the control network are eliminated, enabling increased speed and lower device bias currents. The resulting speed improvement also facilitates the removal of output capacitors that lowers component count and BOM costs.

Microsemi's DC/DC regulators are targeted at 3.3V and 5V applications and are offered in multiple output current ratings. Customers can choose from a variety of space-saving package technologies including dual flat no-lead (DFN) and wafer-level chip-scale packaging (WL-CSP).

The regulators provide the speed needed to deliver the transient power larger capacitors would have provided in the past. The increased speed reduces output voltage excursions during transient loads as much as three times compared to competitive solutions. In addition, the lower bias currents ensure the regulators maximize efficiencies at the lowest load currents, added Microsemi.

The LX7167 2A and the LX7169 3A regulators are sampling now. All three devices will be available in 1Q12.

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