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Benefits of CoolSiC MOSFETs in Bi-Directional Inverter Applications - July 2021
With the move to renewable energy, there is an increased focus not only on generation but also storage, to make the most of the intermittent supply from wind and solar. Batteries are the common...
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Power Electronics Europe News
Evaluation board meets LED TV eco standards
The board helps designers quickly build 200W digital power supplies and adapters for LED and OLED televisions to exceed the toughest energy-efficiency and standby regulations.

It is based on ST’s STNRG011 digital PFC and resonant LLC converter and offers the ability to configure and fine-tune operating parameters. No coding is needed as the digital control algorithms are permanently programmed in the controller’s ROM and the board is supplied with a set of sample parameters stored in programmable non-volatile memory (NVM).

The STEVAL-NRG011TV provides a 12V/4A regulated output to power the television’s controller and audio subsystem and a 65V/2.5A output for LED backlighting. The AC input voltage ranges from 90V to 264V, which allows the board to be used in power supplies and adapters around the world. It also exceeds the current highest eco-design specifications, achieving full load efficiency over 91% at 115V and 230V AC and no-load mains consumption below 120mW.

The STNRG011 includes on-chip an 8-bit CPU subsystem, control logic (including PFC and LLC event-driven state machines), an ADC, high voltage start up circuitry, power management and protection. A two-wire interface manages communication with the external EEPROM, remote monitoring and software updates. The converter is housed in a 20-pin SO20 power package, designed to simplify board layout and to minimise overall dimensions.

The STEVAL-NRG011TV is available now. The STNRG011 is also available in full production volumes.

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