"Hundreds of millions of smart meters around the world are constantly consuming power, measuring energy usage, and providing feedback to power companies," said Dave Freeman, CTO of TI's High Voltage Power Solutions Group. "While smart meters consume relatively little power and are not billed to consumers, there is a need to minimize energy consumption when you sum up the total energy required to power the devices. Advanced power conversion technologies, such as TI's new high voltage power solutions, help minimize the energy consumption of smart meters."

The UCC28880 high-voltage switcher reduces system costs and minimizes the overall size of the power supply while maintaining high efficiency and system performance. With this switcher, designers can configure various converter topologies such as buck, buck-boost, and flyback without adding separate semiconductor components.

Key Features and Advantages of UCC28880

• Industry's lowest power consumption: Standby current drops to less than 100uA as load decreases.

• Reduction in application size and overall system cost: The circuit integrates a 700V MOSFET, a startup current source, and current sensing capabilities into an ultra-small 29.4mm² 7-pin SO package, eliminating the need for external compensation circuitry and further reducing component count and board space.

• Excellent system performance below overcurrent: Provides the controller's inductor current runaway protection along with current limiting to prevent load short-circuit conditions and ensure design reliability.

• Thermal Protection: Provides overheat protection and hysteretic restart functions for safe operation.

• Increased creepage and clearance: High-voltage pins are isolated on one side of the package, maximizing separation between low-voltage and high-voltage pins.

Through an offline AC/DC reference design based on the UCC28880 (PMP8550), designers can more quickly 13V You can design an affordable, low-power, non-isolated high-side buck converter with a full solution size of 38mm x 32mm x 22mm that supports and can generate up to 100mA output current. This reference design includes a buck converter with an integrated switch, making it suitable for numerous industrial applications. The schematic, CAD files, and test results for the reference design are available for download.