Power Electronics / Power Management


PMBus management and protection ICs

20 July 2011 Power Electronics / Power Management

National Semiconductor unveiled two new high-voltage system power management and protection ICs with on-chip power management bus (PMBus) support. The 48 V input voltage LM5066 and -48 V LM5064 integrate system protection and management blocks that precisely measure, control and manage the electrical operating conditions in target systems. Both ICs have selectable 25 mV/50 mV current limit thresholds for addressing a wide range of intermediate bus voltages and load currents. A measurement block measures both current and voltage 1000 times per second with 4,5% accuracy over the full temperature range. Additionally, simultaneous sampling of current and voltage provides a true measurement of the system’s power consumption.



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