Universal noise attenuator in SIP package compatible with most SMPS

4 June 2003 Power Electronics / Power Management

Vicor's first QuietPower output ripple attenuation module - designated QPO-1 - uses active filtering in a SIP package to provide >20 dB of conducted differential noise attenuation from 60 Hz to 500 kHz. This module is rated for 10 A and can be used with most switchmode power supplies having output voltages from 3 to 30 V d.c.

The QPO-1 is the first product from Vicor's new power IC subsidiary, Picor. Vicor says it offers the basic functionality of its popular µRAM 1/4-brick module in a package one-tenth the size at one-third the price. The module's closed-loop architecture greatly improves the load transient response of the source power supply and features precise point of load voltage regulation. The SIP can control the source either through the remote sense leads or through the voltage trim lead. The QPO-1 supports parallel operation for high current requirements.

The SIP measures 25 x 25 x 5 mm. Units are surface-mountable with either LGA or BGA terminations.

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