Two new high-voltage, system power management and protection integrated circuits (ICs) have been introduced by National Semiconductor Corp., with on-chip power management bus (PMBus) support.

The 48V input voltage LM5066 and -48V input voltage LM5064 integrate high-performance system protection and management blocks that precisely measure, control and manage the electrical operating conditions in systems such as routers, switches and base stations.

The ICs enable comprehensive system power management for improving system reliability and reducing power consumption in wired and wireless telecom infrastructure systems that operate from high-voltage system backplanes.

Ethernet routers and switches are often used alongside computing servers within data centres, driving the need for the same accurate measurement and control of power flow into each card.

Additionally, new wireless base stations must control and measure the power to the remote radio heads located at the top of a tower.

The ICs are highly integrated devices that meet these demands using an industry-standard PMBus interface that is software-compatible with the company’s entire family of power products.