Renesas Electronics Announces Low-Loss P-Channel MOSFET for Improved Power Efficiency in Notebook PCs
Low Loss Approximately Half that of Previous Renesas Products, 3.3 mm Square Package, and Industry-Leading Low 4.2 mΩ On-Resistance
TOKYO, Japan, February 16, 2012 — Renesas Electronics Corporation (TSE: 6723), a premier provider of advanced semiconductor solutions, today announced the availability of its lineup of five low-loss P-channel power metal-oxide-semiconductor field-effect-transistor (MOSFET) products, including the µPA2812T1L, optimized for use in charge control switches for lithium-ion (Li-ion) secondary batteries of notebook PCs and power management switches for power supply switching with AC adapters.
Demand has increased in recent years for notebook PCs with lower power consumption by the overall system, longer running time when using battery power, and smaller and thinner form factors. Power MOSFETs are used in charge control switches for Li-ion secondary batteries and power management switches for power supply switching with AC adapters. They must handle the large current flows needed to operate the system overall, and this has brought demand for reduced operating resistance (on-resistance) in order to lower system power consumption. At the same time, there is strong demand for smaller and thinner Li-ion battery packs as notebook PC bodies become slimmer and more compact. This means that power MOSFET products with smaller packages than the conventional SOP-8 are needed.
In response to this demand, Renesas has developed a new fabrication process employing ultrafine process technology, among other innovations, that reduces the on-resistance by half for the same effective area compared with the earlier process used to fabricate MOSFETs for similar applications. The five new products, including the µPA2812T1L, deliver low on-resistance in very compact packages.
Key features of the new P-channel power MOSFETs:
- (1) On-resistance among the lowest in the industry, contributing to better system power efficiency and extended battery operation times
The new MOSFETs achieve low on-resistance approximately half that of previous Renesas products. The µPA2812T1L has a compact 3.3 mm square package and achieves an on-resistance of 4.2 mΩ (typ.), among the lowest in the industry. This makes it possible to keep power consumption low, resulting in improved power efficiency for the system overall and longer operating times when powered by a Li-ion secondary battery.
The lower on-resistance also means that, for example, a circuit employing the earlier Renesas µPA2810T1L connected in parallel can be replaced with one employing the new µPA2812T1L, contributing to a reduction in the mounting area of the system.
- (2) Mounting area approximately two-thirds that of earlier products with equivalent performance, enabling more compact systems
Earlier Renesas products delivered low on-resistance equivalent to the new µPA2812T1L but in a SOP-8 package about three times as large. Switching to the µPA2812T1L makes it possible to reduce the mounting area by around two thirds. This contributes to more compact power supply systems for notebook PCs.
- (3) Extensive lineup covering a wide range of operating current levels
The five new products, of which the µPA2812T1L is one, have on-resistance ratings ranging from 4.2 mΩ to 12 mΩ (typ.). Customers can choose the product version that best meets their requirements in terms of operating current, environmental conditions, etc.
The compact 3.3 mm square package (HVSON(3333)) provides excellent heat dispersion. It is designed to allow heat from inside the package to be dispersed to the mounting board via the exposed lead frame. Since the amount of heat around the device is less than with packages such as the SOP-8 with less efficient heat dispersion, it is possible to design Li-ion battery packs, etc., that are thinner and more compact.
Renesas plans to further extend its lineup of power MOSFET devices with additional improved features and more compact packages. Kits combining power MOSFET devices and Li-ion battery charge control ICs, etc., will provide system designers with a broad array of flexible system solutions.
Pricing and Availability
Samples of Renesas Electronics' new MOSFETs are available now, priced at US$0.6 per unit. Mass production is scheduled to begin in April 2012 and is expected to reach a combined volume of 5,000,000 units per month by April 2013. (Pricing and availability are subject to change without notice.)
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About Renesas Electronics Corporation
Renesas Electronics Corporation (TSE: 6723), the world’s number one supplier of microcontrollers, is a premier supplier of advanced semiconductor solutions including microcontrollers, SoC solutions and a broad range of analog and power devices. Business operations began as Renesas Electronics in April 2010 through the integration of NEC Electronics Corporation (TSE:6723) and Renesas Technology Corp., with operations spanning research, development, design and manufacturing for a wide range of applications. Headquartered in Japan, Renesas Electronics has subsidiaries in approximately 20 countries worldwide. More information can be found at www.renesas.com.