Active Power Filters Replace Passives In Switching Circuits

Oct. 1, 1999

A family of integrated smart-power products provides active filtration with sharp attenuation of low frequencies (less than 200 Hz) in switching power conversion circuits used for telecommunication and test and measurement applications. The devices use an active semiconductor approach to filtering of low-frequency noise and ripple rather than the traditional passive component approach.The first products available are active capacitance types. The AXC-051 is a three-terminal power filter that offers a minimum of 30 dB of attenuation at 20 Hz. It's designed for supplies of -18V to -75V and up to a 5A load. The AXC-053 is a positive-supply version. Models AXC-101 and -102 are 20A versions designed for -8V to -72V and 0V to 28V, respectively.

Sponsored Recommendations

Highly Integrated 20A Digital Power Module for High Current Applications

March 20, 2024
Renesas latest power module delivers the highest efficiency (up to 94% peak) and fast time-to-market solution in an extremely small footprint. The RRM12120 is ideal for space...

Empowering Innovation: Your Power Partner for Tomorrow's Challenges

March 20, 2024
Discover how innovation, quality, and reliability are embedded into every aspect of Renesas' power products.

Article: Meeting the challenges of power conversion in e-bikes

March 18, 2024
Managing electrical noise in a compact and lightweight vehicle is a perpetual obstacle

Power modules provide high-efficiency conversion between 400V and 800V systems for electric vehicles

March 18, 2024
Porsche, Hyundai and GMC all are converting 400 – 800V today in very different ways. Learn more about how power modules stack up to these discrete designs.

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!