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PMBus protection IC provides accurate power monitoring

Posted: 19 Sep 2012 ?? ?Print Version ?Bookmark and Share

Keywords:PMBus? control IC? system management bus?

Texas Instruments Inc. has recently introduced a new server monitoring, protection and control IC with on-chip PMBus support. Fully compliant to Intel's Node Manager 2.0, the LM25066IA provides designers of servers with a system power management as well as a protection solution that interfaces directly with Intel management engine.

The device delivers a one percent current accuracy and a two percent power measurement accuracy over the server operating temperature range, enabling the dynamic server platform to implement power capping schemes that minimize operating expense and improve reliability in data centers.

TI's latest control IC integrates high-performance monitoring, protection and control blocks that precisely control and manage the electrical operating conditions of each blade in the chassis. It continuously supplies the system management host or management engine device with real-time power, voltage, current, temperature and fault data for each blade subsystem.

The parametric and fault data is delivered through the system management bus (SMBus) communications interface using the industry-standard PMBus protocol and the host's system diagnostic and optimization routines use the data to limit the power to each blade subsystem, or node. Using this scheme, data center operators are able to minimize the overall power consumption of the server equipment while increasing system reliability by keeping the servers operating within their optimal operating power range.

TI also offers the LM25066I that delivers 2.4 percent current measurement accuracy and 3-percent power measurement accuracy. The LM25066IA and LM25066I join TI's system protection and management family that includes the LM5066 and LM5064 for up to +80V and -80V applications respectively, and the LM25056, LM25056A and LM5056 for up to 17V and 80V applications respectively.

The LM25066IA and LM25066I are offered in a 4-mm by 5-mm, 24-lead LLPpackage and are priced at $2.95 and $2.45 respectively, in 1,000-unit quantities. The LM25066IA and LM25066I are sampling now with full production volumes scheduled for October 2012.

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