STMicroelectronics STEVAL-NRG011TV

Overview

STEVAL-NRG011TV from STMicroelectronics is a 200 W LED TV SMPS evaluation board featuring dual regulated outputs (12 V/4 A and 65 V/2.3 A), built around the STNRG011 digital combo controller, implementing transition-mode PFC and resonant half-bridge LLC stages for high-efficiency AC/DC conversion in consumer display power supplies.

For engineers reviewing the STEVAL-NRG011TV datasheet, STEVAL-NRG011TV application, STEVAL-NRG011TV block diagram, or STEVAL-NRG011TV alternative boards, this reference design delivers verified performance metrics including >91% full-load efficiency at 115/230 VAC, <120 mW no-load consumption, and field-programmable NVM-based configuration without firmware development.

Technical Context

The board implements a two-stage AC/DC architecture: a front-end TM PFC pre-regulator followed by an LLC resonant half-bridge DC/DC stage, both digitally controlled by the STNRG011 IC. Key control signals include PFC_ZCD, PFC_CS, LLC_CS, LLC_FB, and LLC_AUX, enabling precise zero-current detection, current sensing, and resonant frequency tuning.

It integrates black-box diagnostics via embedded EEPROM (M24C32-RMN6TP), supports programmable protection thresholds (LLC_OVP, PFC overcurrent), and uses discrete MOSFETs (STF24N60M2, STF13N60M2) and SiC diodes (STTH5L06FP, STPS20H100CFP) for robust high-voltage switching and rectification.

Key Specifications

Availability

STEVAL-NRG011TV is available at Aetrix Electronics and suitable for LED TV power supply design, OLED display reference development, and high-efficiency resonant SMPS qualification requiring stable component supply and production-ready topology validation.

Supply support for STEVAL-NRG011TV includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, analog ICs, power devices, and digital controllers for industrial, automotive, and consumer applications.

The STEVAL-NRG011TV belongs to ST's STNRG digital power evaluation platform family, developed specifically to accelerate adoption of digitally controlled, high-efficiency AC/DC solutions for large-screen displays and premium consumer electronics.

FAQ

What is the primary function of the STNRG011 IC on this board?

The STNRG011 is a digital combo controller that simultaneously manages transition-mode PFC and time-shifted LLC resonant conversion. It replaces analog PWM and PFC controllers with a single IC, executing real-time digital control loops using factory-programmed NVM parameters-no user firmware coding is needed.

Does STEVAL-NRG011TV support configurable protection thresholds?

Yes. All critical protections-including LLC output overvoltage (LLC_OVP), PFC current limit, brown-in/out windows, and thermal shutdown-are stored in the STNRG011's non-volatile memory and can be reconfigured using ST's eDesignSuite software and USB interface without hardware modification.

Can this board be used for non-TV applications?

Yes-its 12 V/4 A and 65 V/2.3 A dual-output architecture and 200 W capability make it suitable for commercial signage, medical display power, and industrial HMIs requiring isolated, high-efficiency, digitally tuned SMPS with programmable safety margins.

Is the EEPROM on board used for runtime logging or configuration only?

The M24C32-RMN6TP EEPROM serves exclusively for black-box fault logging: it records timestamped event data (e.g., OVP trigger, thermal shutdown, PFC fault) during abnormal operation, enabling post-failure root-cause analysis without requiring external debug tools.