STMicroelectronics EVL011A150ADP

Overview

EVL011A150ADP from STMicroelectronics is a 12 V, 150 W AC/DC demonstration board based on the STNRG011A digital combo controller and SRK2001 synchronous rectifier IC, implementing a two-stage transition-mode PFC + resonant half-bridge LLC topology for high-efficiency power conversion in AIO computers and high-power adapters. It delivers >90% full-load efficiency at 115/230 Vac, <75 mW no-load consumption, and >10 ms hold-up time.

For engineers reviewing the EVL011A150ADP datasheet, EVL011A150ADP application, EVL011A150ADP bill of materials, or EVL011A150ADP alternative evaluation boards, this page provides verified design context, performance benchmarks against ENERGY STAR® 6.1 and CoC v5 Tier-2, and component-level implementation details for rapid prototyping and compliance validation.

Technical Context

The board implements a digitally controlled two-stage architecture: a transition-mode PFC pre-regulator (U2: STNRG011A) followed by an LLC resonant half-bridge converter, with adaptive synchronous rectification managed by U501 (SRK2001) on the secondary side. No auxiliary supply is required due to ultra-low standby power.

Key control functions include programmable NVM-based parameter tuning, black-box EEPROM configuration, and comprehensive protection (OVP, OCP, OTP, brown-in/out). Harmonic distortion complies with EN61000-3-2 Class-D and JEITA-MITI Class-D limits.

Key Specifications

Availability

EVL011A150ADP is available at Aetrix Electronics and suitable for AIO computer power supply development, high-power adapter qualification, and industrial SMPS reference design validation requiring stable component supply and full regulatory documentation support.

Supply support for EVL011A150ADP 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, Switzerland, designing and manufacturing microcontrollers, power ICs, analog devices, and digital controllers for industrial, automotive, and consumer applications.

The EVL011A150ADP belongs to ST's AC/DC digital power evaluation platform family, engineered to accelerate adoption of high-efficiency, digitally programmable SMPS designs targeting ENERGY STAR®, CoC, and regional harmonic compliance.

FAQ

What is the primary function of the STNRG011A IC on this board?

The STNRG011A is a digital combo controller that manages both the transition-mode PFC pre-regulator and the resonant half-bridge LLC converter in a single SO20 package. It executes real-time digital control algorithms, enables full programmability via I²C-connected EEPROM (U1: M24C32), and integrates protections including OVP, OCP, and OTP without external components.

Does EVL011A150ADP include synchronous rectification, and how is it implemented?

Yes - synchronous rectification is implemented using the SRK2001 adaptive controller (U501, SSOP10) driving STL140N6F7 Power MOSFETs (Q501/Q502, PoweFLAT 5x6) on the secondary side. This replaces conventional diodes to reduce conduction losses, directly contributing to >93% peak efficiency and <75 mW no-load consumption.

Can EVL011A150ADP be used for regulatory certification testing?

Yes - the board is fully characterized per ENERGY STAR® 6.1, EU Eup Lot 6 Tier 2, and CoC v5 Tier-2 requirements, with documented efficiency, no-load power, PF, and harmonic current data in DB4767. Its layout, BOM, and thermal design reflect production-ready implementation, making it suitable for pre-compliance and formal certification testing.

Is firmware or configuration software required to operate EVL011A150ADP?

No standalone firmware upload is needed - the board operates out-of-the-box using factory-programmed parameters stored in the onboard M24C32 EEPROM (U1). Configuration changes require ST's eDesignSuite and STSW-STNRG011A GUI via USB-to-I²C interface; the "black box" mode allows deployment without reprogramming.