Semiconductors
Passive Components
Sensors
Power
Optoelectronics
STMicroelectronics' STEVAL-NRG011TV evaluation board helps designers quickly develop 200W digital power supplies and adapters for LED and OLED TVS, meeting stringent regulatory requirements for energy efficiency and standby energy consumption.
Based on ST's STNRG011 digital PFC (Power factor Corrector) and resonant LLC power converter, the STEVAL-NRG011TV uses a proven and reliable topology to configure and tune operating parameters for excellent power performance. The digital control algorithm is permanently solidified in the ROM memory of the power controller without writing code. The programmable non-volatile memory (NVM) memory on the board has a complete set of sampling parameters.
The STEVAL-NRG011TV provides 12V/4A regulated power for the TV controller and audio subsystem, and 65V/2.5A power for the LED backlight. The wide AC input voltage of 90V to 264V allows the board to be used in power supplies and adapters sold worldwide. Energy efficiency exceeds today's strict eco-design specifications, with full load efficiency exceeding 91% at 115V and 230V AC and no-load power consumption below 120mW.
As the main chip of the circuit board, the STNRG011 provides a highly integrated solution for the design of efficient power converters with power factor correction. Integrated on chip is an 8-bit CPU subsystem, control logic (including PFC and LLC event driven state machine (SMED)), analog-to-digital converter (ADC), high-voltage start circuit, power management and protection module. A two-wire interface handles communication between the chip and external EEPROM memory, as well as remote monitoring and software updates. The device comes in a 20-pin SO20 power package that helps simplify board layout and reduce power supply size.
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