STMicroelectronics EVALHVLED815W15

Overview

EVALHVLED815W15 from STMicroelectronics is a 15 W high-power-factor LED driver evaluation board based on the HVLED815PF IC, implementing single-stage primary-side regulated flyback topology for AC mains-powered LED lighting. It delivers 485 mA at 30.5 V with >0.95 power factor, <20% THD, and >84% efficiency across 220 VAC ±20% input.

For engineers reviewing the EVALHVLED815W15 datasheet, EVALHVLED815W15 pinout, EVALHVLED815W15 application, or EVALHVLED815W15 equivalent, this board enables rapid validation of high-efficiency, optocoupler-free LED driver designs targeting commercial indoor lighting, downlighters, and integrated LED luminaires requiring Class C harmonic compliance.

Technical Context

The board implements a single-stage flyback converter with primary-side regulation (PSR), eliminating the need for an optocoupler or secondary-side feedback circuitry. The HVLED815PF integrates an 800 V avalanche-rugged Power MOSFET and low-voltage PWM controller in one package, enabling direct rectified mains operation with minimal external components.

It supports universal input via 220 VAC ±20% operation, achieves Class C IEC 61000-3-2 harmonic compliance (<20% THD), and provides built-in open/short LED string fault protection - all without auxiliary winding sensing or secondary-side control.

Key Specifications

Availability

EVALHVLED815W15 is available at Aetrix Electronics and suitable for commercial indoor lighting, architectural downlighting, integrated LED retrofit lamps, and industrial panel-mounted LED fixtures requiring stable component supply, fast prototyping turnaround, and regulatory-compliant reference design validation.

Supply support for EVALHVLED815W15 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 sensors for industrial, automotive, and consumer applications.

The EVALHVLED815W15 belongs to ST's LED driver evaluation platform family, developed specifically to accelerate adoption of high-efficiency, high-power-factor, PSR-based AC/DC LED drivers for cost-sensitive, space-constrained lighting applications.

FAQ

What input voltage range does EVALHVLED815W15 support?

The board is designed for 220 VAC ±20%, i.e., 176–264 VAC operation. It is not rated for universal 85–264 VAC input. This fixed-range design optimizes transformer turns ratio and EMI filter for European mains, delivering peak efficiency and PF performance within that band.

Does EVALHVLED815W15 require an optocoupler for regulation?

No. It uses ST's patented primary-side regulation (PSR) technique implemented in the HVLED815PF IC. Regulation is achieved by sampling reflected auxiliary winding voltage during MOSFET off-time, eliminating optocoupler, TL431, and secondary-side feedback components - reducing BOM cost and improving reliability.

What protection features are implemented on this board?

The board provides open-circuit and short-circuit LED string protection via the HVLED815PF's internal sensing. It also includes overvoltage clamping (via D1, C1/C2 X2 capacitors), inrush limiting (R1), and thermal foldback through the IC's internal temperature monitoring - no external thermistor or shutdown circuit required.

Can EVALHVLED815W15 be modified for different output currents?

Yes - output current is set by R2 (1.5 Ω, 1%) in series with the LED return path. Replacing R2 adjusts current linearly (e.g., 1.0 Ω yields ~728 mA). Transformer turns ratio and output capacitor ratings must remain compatible with new current/voltage combinations to maintain safety and efficiency.