STMicroelectronics HVLED101TR

Overview

HVLED101TR from STMicroelectronics is a high-power-factor quasi-resonant flyback controller for LED drivers, featuring primary-side regulation (PSR), 800 V high-voltage startup, programmable input overvoltage/brownout protection, valley locking, and THD < 5% at full load. It supports up to 180 W in single-stage and 200 W in two-stage LED driver topologies with integrated optocoupler interface and adaptive burst-mode operation.

For engineers reviewing the HVLED101TR datasheet, HVLED101TR pinout, HVLED101TR application, or HVLED101TR equivalent, key selection considerations include its 800 V HVSU pin capability, PSR/SSR dual-loop flexibility, programmable frequency foldback via VL pin, and built-in ART auto-restart timer for reliable fault recovery in AC/DC LED lighting systems.

Technical Context

The HVLED101TR implements peak current mode control with dual regulation paths: PSR using ZCD-based demagnetization sensing and SSR via direct optocoupler connection to OPTO pin - both independently configurable. Its internal multiplier combines FB, OPTO, and MPC signals in an OR-ed structure to enable seamless transition between regulation modes.

Core timing and protection logic is driven by HVSU voltage detection (CFG-selectable 0–480 V or 0–760 V range), DLY/CFG-programmed delay for ZCD-to-GD turn-on, and VL pin-controlled valley skipping (1st–6th valley thresholds from 1.7 V to 1.0 V). The THD optimizer uses an external ceramic capacitor on THD pin to dynamically adjust switching behavior for <10% THD at 1/3 load.

Key Specifications

Pinout & Package

Package: SOP-14 (Small Outline Package, 150 mil width), tape-and-reel packaging (TR) per HVLED101TR order code.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-power-factor LED controller applications.

Compared with NCL30086 and AP3768, HVLED101TR uniquely integrates 800 V HVSU, valley locking, THD optimization, and ART - enabling certified, silent, high-reliability LED drivers up to 180 W without external protection or compensation components.

Availability

HVLED101TR is available at Aetrix Electronics and suitable for street lighting, industrial high-bay fixtures, and architectural floodlights requiring stable component supply, long-lifecycle assurance, and full compliance with IEC 61000-3-2 Class C.

Supply support for HVLED101TR 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, specializing in power management, analog, and microcontroller solutions for industrial, automotive, and lighting applications.

HVLED101TR belongs to ST's HVLED family of high-power-factor LED controllers, designed specifically for energy-efficient, standards-compliant AC/DC LED drivers with integrated protection and ultra-low standby power.

FAQ

What is the purpose of the HVSU pin, and how is it connected?

The HVSU pin serves dual functions: high-voltage startup and real-time input voltage sensing. It withstands up to 800 V and is connected directly to the DC side of the bridge rectifier via a 1 kΩ resistor (or AC side with two diodes). During startup, it charges the VCC capacitor; during operation, it enables PF correction and triggers iOVP/brownout protections without external components.

Can HVLED101TR operate in both PSR and SSR modes simultaneously?

No - HVLED101TR supports PSR and SSR modes independently, not concurrently. PSR uses ZCD demag detection and FB pin feedback; SSR uses optocoupler signal on OPTO pin. The internal multiplier OR-combines FB, OPTO, and MPC voltages, allowing automatic fallback to PSR if OPTO signal is lost, but only one regulation path is active at a time.

How does the Valley Locking (VL) pin affect efficiency and noise performance?

The VL pin voltage determines the number of valleys skipped before MOSFET turn-on: higher VL (e.g., 1.7 V) enables QR at first valley for peak efficiency; lower VL (e.g., 1.0 V) skips to 5th/6th valley at light loads, reducing switching frequency and eliminating audible noise. This maintains >88% efficiency from 10% to 100% load while suppressing EMI peaks.

What fault conditions trigger the Auto Restart Timer (ART), and how does it behave?

ART activates after latch-free shutdown caused by open-circuit, output short-circuit, input overvoltage/undervoltage, external FAULT assertion, or overcurrent. It holds GD inactive for 1.5–3.5 s, then attempts automatic restart. Unlike latched devices, ART avoids permanent shutdown - critical for outdoor LED systems where transient faults (e.g., lightning-induced surges) must self-clear.