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Electronic Design

Power Supply Chips Boost Efficiency

NXP Semiconductors, Inc. announced a new suite of power management devices, the GreenChip PFC, GreenChip SR controllers, and a portfolio of 30-V power MOSFETs in LFPAKs at APEC 2009. According to NXP, these devices promise to reduce power consumption in desktop PCs and laptops.

The GreenChip III adapter chip integrates a PFC function that allegedly enables the highest possible efficiency for 75- to 600-W power supplies. This PFC function is now available standalone via the TEA1742 GreenChip, completing the company’s system solution for PC power supplies complying to the 80PLUS Gold standard.

To replace energy inefficient diode rectification circuits with a single IC, the GreenChip SR TEA1791 controller enables a simpler implementation of synchronous rectification in power supplies, fully compatible with the GreenChip or any other power supply controller.

Additionally, the company’s latest power MOSFETs include 10 30-V devices in LFPAKs that feature an on-resistance range from 1.7 to 9 mΩ. High-volume pricing for the GreenChip PC, GreenChip SR, and PSMN1R7-30YL ranges from $0.38 to $0.75 each.

NXP Semiconductor

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