Keep Your Designs Ahead Of The Latest Energy Efficiency Challenge

Highly-integrated digital power controller chip for 90-300W power supplies

energy efficiency

Today, power supply designers must create products that comply with the latest energy efficiency regulations due to environmental concerns. New highly integrated Digital-Power Controller STNRG011 from STMicroelectronics claims to solve this energy efficiency challenge.

The STNRG011 simplifies and accelerates the development of 90-300W power supplies and adapters for computers, LED lighting, medical equipment, telecom and industrial equipment, complying with today’s most stringent eco-design standards including ENERGY STAR requirements for computers ver. 6.1 and EU Code of Conduct (CoC) Tier 2.

The STNRG011 integrates a double-ended LLC resonant half-bridge controller and a multi-mode Power-Factor Correction (PFC) controller, managed by a digital core running control algorithms.


According to ST, the device’s integrated digital peripherals accelerate control-loop performance for an excellent dynamic response. Non-volatile memory is also provided on-chip, for storing application-specific parameters.

The chip’s digital control and user programmability help engineers optimize efficiency and performance throughout the load range and take advantage of burst-mode operation at light loads to maximize efficiency.

A 2-pin UART/I2C port enables a host system to monitor and manage the power supply.

Designers can further simplify design, increase reliability and ruggedness, and reduce solution size and BOM with additional integrated features including LLC and PFC gate drivers, high-voltage (800V) startup circuitry, and line sensing.

An X-capacitor discharge circuit eases compliance with the new IEC 62368-1 safety standard for audio-visual and ICT equipment, which is taking over from 60950 and 60065 standards in the US and EU.

Aside from that, the device integrates comprehensive protection for the LLC and PFC circuitry, including over-voltage, over-current, under-voltage, surge, feedback-disconnection, anti-capacitive protection, brown-out protection, and soft-start.

PN & Trench Schottky Rectifiers In A Smaller Footprint

The STNRG011 is in production now, packaged as a 20-pin small-outline device, and priced from $1.42 for orders of 1000 pieces.

More information:

Read the Press release:



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