Single-phase energy-measurement processors accurately monitor power for a fraction of the cost

January 17, 2013 // By Paul Buckley
Maxim Integrated Products, Inc. is now sampling the 78M6610+PSU/78M6610+LMU single-phase energy-measurement processors.

The processors are an energy-measurement subsystem in a single chip. They provide simple utility-grade sensing and diagnostics for existing designs without the traditional cost of a utility meter system-on-chip. Both devices contain firmware to meet end application requirements. The 78M6610+PSU is specifically designed for real-time monitoring of data centers, servers, and telecom and data equipment, while the 78M6610+LMU is a more general-purpose solution for applications such as white-good appliances, smart plugs, EV chargers, and solar inverters.

The 78M6610 processors enable energy-measurement functionality while reducing both manufacturing costs and time to market. Energy-measurement solutions traditionally required the use of an additional microcontroller, which adds design cost and months of development time. The 78M6610 allow users to conveniently add a complete energy meter to an already existing design without redesign. Additionally, the processors’ flexible measurement and host interfaces allow for easy integration into any system.

The devices offer utility-grade sensing over the entire dynamic range of load current and power-down modes.  Internal RC oscillator and low baud rate serial interface eliminate the need for expensive and fragile crystals.

Firmware is optimized for end applications so design-in is greatly simplified

Availability and Pricing

The 78M6610+PSU is available in a 24-pin QFN and 16-pin TSSOP package.

The 78M6610+LMU is available in a 24-pin QFN package.

The 78M6610+PSU/78M6610+LMU pricing starts at $1.99 (1000-up, FOB USA).

More information about the 78M6610+LMU at

More information about the 78M6610+PSU at