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Integrated Power Stages Are Smallest Available

Tue, 02/24/2009 - 5:15am

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Primarion PX4650/PX4640Targeting servers, storage equipment, and routers, Primarion’s PX4650 and PX4640 integrated power stages (iPSs) are presented as being the smallest available, measuring 4 mm × 6 mm. The 20-lead QFN-packaged chips combine low-RDS(ON) N-channel MOSFETs for high- and low-side FETs with high- and low-side MOSFET drivers. The RoHS-compliant units support an average output current of up to 50 A in 24 mm² per stage when combined with Primarion’s digital multiphase or Di-POL controllers. The iPSs exhibit efficiency from 92% to 94%, input undervoltage protection, average current limit protection when combined with a digital controller; integrated pulse-by-pulse peak current limit, and integrated overtemperature protection. The components offer a temperature monitor, switching frequency from 200 kHz to 1.3 MHz, and 3-state PWM input compatibility.

Primarion
866-321-7746, www.primarion.com

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