GreenChip Power ICs offer low-load efficiency and no-load standby power benefits

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By eeNews Europe

The GreenChip SPF TEA1731 6-pin flyback converter claims to offer best-in-class no-load IC power consumption, featuring a power-saving mode that enables less than 100 mW no load for adapters. In power-saving mode, the TEA1731 also enables power supplies to run below 0.5 W at 0.25-W load power – for example, in supplying standby systems, thus enabling EuP Lot 6 compliance.

The GreenChip SPF TEA1731 is packaged in a sub-miniature TSOP6 package, designed for low-cost, compact power supplies for 10 to 70-W systems. With a low IC operating current and switching frequency efficiency optimization modes, the controller achieves 90-percent average efficiency for low-cost power supplies, in addition to enabling best-in-class no-load standby performance.

The GreenChip SPF TEA172x family of highly integrated flyback regulators designed for systems under 15 W and featuring sub-10 mW standby capability at 230 V AC mains input. Available in a compact SO7 package with HV spacer, the TEA172x family includes an integrated power MOSFET and primary output voltage sensing, which helps to automatically reduce current consumption when a charger is left plugged in, even when there is no device attached to be charged. The TEA1721 (up to 5 W), TEA1722 (for up to 8 W) and TEA1723 (for up to 11 W) also include built-in energy save control modes to enable the highest possible efficiency, and are fully compliant to USB1.1 and USB1.2 battery charging specification, delivering constant voltage (5V) and constant current at maximum load.

NXP’s new GreenChip TEA1792 is a 6-pin synchronous rectification controller capable of driving a wide range of SR MOSFETs of all brands to the lowest possible RDS(on). Available in a TSOP6 package, the TEA1792 SR control IC requires minimal external components and reduces PCB real estate for the syncrec function significantly. Pairing the GreenChip TEA1792 alongside NXP’s power SR MOSFETs in LFPAK, which offers automotive-grade ruggedness, enables high power density for very small charger designs. Other available packages for NXP’s broad selection of power MOSFETs include TO220, I2PAK and D2PAK.

The GreenChip ICs enable compact, slim designs for chargers, adapters and power supplies across a broad range of applications. These include mobile communication devices such as smartphones and media tablets; portable computing devices such as e-readers, audio/video players, netbooks, Ultrabooks and PC peripherals; white goods such as washing machines, refrigerators, dishwashers and induction cookers; and industrial and residential systems for smart lighting, smart metering, HVAC, and home and building automation and control.

Samples of the GreenChip SMPS controller ICs are available starting in February and March 2012.

More information about the GreenChip SPF TEA172x, GreenChip SPF TEA1731 and the GreenChip TEA1792 at            


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