Ripple Attenuator ensures quiet point-of-load regulation.
Press Release Summary:
Model QPO-2 System-in-a-Package uses active filtering to reduce supply output ripple and noise by over 30 dB from 1-500 kHz. Its architecture improves transient response and ensures quiet point-of-load regulation when used with switching power supplies. Unit can be tailored to meet system needs and operates over output voltage range of 0.3-5.5 Vdc. Applications include test and measurement, distributed point-of-load power systems, and medical instrumentation.
Original Press Release:
Picor Introduces Low-Voltage Output Ripple Attenuator SiP
Improves transient response and ensures quiet point-of-load regulation
No. Smithfield, RI, April 14, 2005...Picor, a subsidiary of Vicor Corporation (NASDAQ:VICR), today introduced the QPO-2 System-in-a-Package (SiP), an output ripple attenuator that uses active filtering to reduce supply output ripple and noise (PARD, Periodic and Random Deviation) by over 30dB from 1kHz to 500kHz. The QPO-2 architecture improves transient response and ensures quiet point-of-load regulation when used with most switching power supplies. QPO-2 is easy to apply and provides the user with features that can be tailored to optimize the product's performance to meet the system needs. It is targeted to applications such as: test and measurement, distributed point-of-load power systems, sensors requiring low-noise power, and medical instrumentation.
The QPO-2 operates over an output voltage range of 0.3 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 dramatically reduces the capacitance needed at the converter output to provide the equivalent transient performance and ripple reduction.
"The QPO-2 is a flexible product that allows a designer -- depending on the requirements of the application -- to optimize attenuation vs. power dissipation, or transient load response," said Bob Lanoue, Picor Systems & Applications Manager.
Dimensions of the SiP are 25x25x4.5mm with LGA mounting. The QPO-2 is packaged in anti-static tubes and is priced at $13.80 per 1,000 piece quantity. Delivery: stock to 6 weeks. For a data sheet and other information on the QPI-4L Active EMI Filter, please visit www.picorpower.com. To order, contact Vicor Express at 800-735-6200 or e-mail vicorexp@vicr.com.
Technical Contact:
John Pyle
Manager, Core Marketing
Picor
978-749-3308
jpyle@vicr.com
