Picor Intros QPO-2 SiP Output Ripple Attenuator Module

Picor Corp. (Andover, MA), a power IC subsidiary of Vicor Corp. (Andover, MA), introduced its QPO-2 System-in-a-Package (SiP), an output ripple attenuator that uses active filtering to reduce supply output ripple and noise by over 30 dB from 1 kHz to 500 kHz. The QPO-2 architecture improves transient response and ensures quiet point-of-load (POL) regulation when used with most switching power supplies. It is targeted to test and measurement, distributed POL power systems, low-noise power sensors, and medical instrumentation applications.

The QPO-2 module operates over an output-voltage range of 0.3 Vdc to 5.5 Vdc and requires an external input bias voltage above the output voltage of 7 V for proper operation. It is compatible with most switching power supplies and converters and regulates the load by using either the remote sensing feature of a converter or the adjust pin of the QPO-2. The adjust feature will correct the converter's output voltage to compensate for the headroom voltage drop of the filter if remote sensing is not available or not preferred. The headroom setting of the filter reduces the capacitance needed at the converter output to provide the equivalent transient performance and ripple reduction.

The QPO-2 SiP measures 25 mm x 25 mm x 4.5 mm with LGA mounting. The QPO-2 is packaged in anti-static tubes and is priced at $13.80 per 1,000-piece quantities. Delivery is stock to six weeks.