Fujitsu Releases Fast-Response DC/DC Converter IC

Fujitsu Microelectronics Limited , provider of IT-based business solutions, announced a new two-channel DC/DC converter IC with fast-transient response for use in digital consumer products, such as LCD TVs and digital video recorders.

 

The DC/DC converter IC, the MB39A145, utilizes a bottom detection comparator method, with enhanced circuits that provide changes in voltage. This allows changes in current to realize a stable and low ripple output voltage, resulting in improved stability subsequently reducing the number of external components that are needed, such as condensers, thus reducing space.

 

The IC also includes “Pulse (News - Alert) Frequency Modulation” (PFM)(2) technology that is highly efficient in low-current ranges, and allows the equipment to have low power consumption in stand-by mode.

As AV equipments, such as LCD TVs and digital video recorders, have larger screens, they come with multiple functions and utilize advanced video compression technologies. These are supported by ICs to provide high-speed and multi-functionality.

The DC/DC converter ICs enhance some of the comparator circuits, to provide stability in output voltage. In addition, for low current ranges below 100 milli-Amperes(mA), the use of PFM reduces the power consumption in stand-by mode.

Fujitsu (News - Alert) Microelectronics and Fujitsu VLSI Limited developed this IC and will be exhibiting at Embedded Technology 2009 to be held in Yokohama, Japan, from November 18-20.

Features of the DC/DC converter ICs include: fast transient response, energy efficiency in low-current ranges and reduced component count, which leads to size reduction and ease of design of power supply systems.