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Third gen chip reduces standby power in notebooks

NXP announces the launch of GreenChip III — its third generation of energy-efficient ICs for Switch Mode Power Supplies (SMPS). Designed specifically for notebook adapters and LCD TVs, the new GreenChip III TEA1750 reduces no-load standby power consumption to 200 – 300 mW — below US ENERGY STAR requirements and a reduction of over 200 mW in standby power consumption compared to conventional solutions.

The GreenChip III TEA1750 features an innovative design that integrates the flyback controller and power factor controller (PFC) in a single SO16 package, enabling plug-and-play designs for power supply designers. Unlike traditional adapter solutions, the PFC switches to low-power burst mode during standby rather than shutting off completely. This patent-pending solution allows the flyback converter to operate more efficiently — in a range from 300V ” 400V rather than powering up from 90V — enabling significant cost savings in required capacitors and magnetics, smarter system power management and increased reliability.

“Government programs such as ENERGY STAR and growing consumer awareness about the environment are making energy-efficient power adapters a 'must have' for laptops and other consumer electronics products,” said Erwin Seinen, marketing manager, power solutions product line, NXP Semiconductors. “The GreenChip III TEA1750 enables new levels of energy efficiency in notebook adapters, as well as lighter and more compact designs that make it easier for consumers to transport their laptops. Most importantly, by reducing the number of external components needed, the GreenChip III allows OEMs to become more cost competitive while maintaining a high degree of quality and reliability.”

The GreenChip III TEA1750 supports universal mains supply operation (70Vac to 276 Vac) and a wide Vcc range, eliminating the need for an external voltage regulator. In addition to the burst mode PFC during standby, it provides several patented green features, including true valley switching and a high-voltage start-up current source.

The GreenChip III TEA1750 is available immediately. Additional information on the GreenChip family of products from NXP is available at: www.nxp.com/products/power_management/.

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