Power Management Applications for End Products

Power Management LSI for Ultra-Mobile PCs

MB39C308

Fujitsu Limited has developed a one-chip system power management LSI for ultra-mobile PCs (UMPCs), to supply power to the system, memory, and chipsets in UMPCs (Ultra Mobile PCs). Sample shipments for the new LSI product, MB39C308, started from November 2007.

As an industry first for one-chip integration, this LSI complies with the next version of the LPIA (Low Power Intel Architecture) specification proposed by Intel as a low power platform for UMPCs, and meets the next LPIA platform requirement of a 6 channel DC/DC converter control circuit, while also integrating other peripheral components onto the same single chip. This enables the power management system to be reduced to less than one-third (1/3) the size compared to current products from other companies. Increased efficiency of power supply of this LSI can contribute to extending the operating time of the UMPC's battery.

For UMPCs, it is necessary to supply differing voltages to the processor, chipset memory, and other parts. To extend the operating time of the battery, reduction of power consumed by the processor and high efficiency of the power management LSIs are required. Thus, there is a need for power management LSIs that can enable size reduction of the overall power supply system, including control circuits that can supply a large current with high efficiency from the lithium ion battery.

This new LSI was developed based on such needs, and is the industry's first one-chip power management LSI that conforms to power supply systems specifications necessary for UMPC, as outlined by Intel in the 2008 version of the LPIA platform for UMPCs.This product was jointly developed with Fujitsu VLSI Ltd.

Power Management LSI for Mobile WiMAX devices

MB39C316

The next-generation Mobile WiMAX technology will be deployed in the United States, Europe, and Taiwan this year, and in Japan next year.
The initial service will be through PC-based mobile broadband access, with simultaneous development of handsets, smart phones, PDAs, portable games and navigation systems.

The MB39C316 is a Power Management LSI, which has
3-channel DC/DC converter and 4-channel LDO.
This product integrates all of necessary power supplies for Mobile WiMAX Chipsets powered by 1-cell Li-ion battery.

The MB39C316 power management IC eliminates all the complex and time-consuming power management requirements by accommodating one cell battery.
This design minimizes the peripheral components outside of the module.
The MB39C316 controls and manages the module's power schemes at the system level, achieving the lowest power consumption at each operation.