Power Input Module Design for ATCA Applications

12th July 2007

SynQor

ES Admin

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SynQor has announced the release of its iQor Power Interface Module for applications complying with the Advanced Telecom Computing Architecture (ATCA) specifications, offering designers the smallest available overall power solution for Carrier Card designs. The Interface Module, when coupled with a Payload DC/DC Converter such as SynQor’s PQ60120QEA25, results in the most comprehensive solution for ATCA board designs, with only fuses and hold-up capacitors needed to be added externally to support the ATCA specifications.

The IQ65033QMA10 series is rated at up to 10A of output current, and has an input voltage range of -36V to -75V. The module provides all power management features required by the ATCA specifications including:

• MOSFET based Input OR-ing of A & B power feeds
• Hot swap & Inrush control with seamless ride through of input transients
• EMI filter designed to meet CISPR 22 Class B levels for conducted noise
• Up to 3.6A of 3.3V Management Power for IPMI and house keeping functions

SynQor’s new iQor module also provides a 5V/150mA rail to support the ubiquitous Blue LED. It has a programmable hold-up capacitor voltage offering an output from 50V to 95V, which significantly reduces the amount of capacitance needed. This value is set by a single external resistor. When set to a value of 90V, only 564µF of external hold-up capacitance is required to achieve 8.70ms of hold-up time with a 200W load. This is more than ten times less capacitance than some competitive solutions.

When combined with SynQor’s PQ60120QEA25 Isolated DC/DC Converter, the overall board space required is less than 8in2 (51cm2), saving up to 25% board area over competitive solutions.