High-voltage switcher delivers energy savings to smart meters

Paul Boughton

Expanding its portfolio of high-voltage power solutions for offline AC/DC designs, Texas Instruments (TI) has ntroduced a 700-V switcher with a quiescent current of less than 100 uA. The UCC28880 controller integrates a 700-V power MOSFET and high-voltage current source, increasing overall energy efficiency of 'always-on' non-isolated power systems with output currents up to 100 mA, such as smart meters, home automation equipment and white goods.

“Hundreds of millions of smart meters around the world continuously draw power from the grid to measure energy use and provide feedback to the utility,” said Dave Freeman, CTO for TI’s high-voltage power solutions group. “Even though meters consume relatively small amounts of power that is not charged to the customer, when you multiply the amount of energy needed to power the devices, it makes sense to minimise the energy consumed. New power conversion technologies, such as TI’s new high-voltage power solution will help smart meters minimise energy consumption.”

The UCC28880 high-voltage switcher reduces system cost and minimises the overall size of the power supply, while maintaining high efficiency and system performance. Designers can use the switcher to build different converter topologies, such as buck, buck-boost and flyback, without adding extra semiconductor components.