STMicroelectronics HVLED001A

Overview

HVLED001A from STMicroelectronics is a quasi-resonant (QR) peak current mode offline LED controller supporting primary-side regulation (PSR) and high power factor (HPF) flyback/buck-boost topologies up to 150 W. It integrates 800 V high-voltage startup, input voltage sensing, optocoupler failure detection, and smart auto-recover timer (ART), enabling single-stage LED drivers with >0.9 PF and <15% THD across universal AC input.

For engineers reviewing the HVLED0001A datasheet, HVLED001A pinout, HVLED001A application, or HVLED001A equivalent, this IC is selected for constant-voltage or constant-current LED driver designs requiring high efficiency (>90%), fast transient response, 0–10 V/PWM dimming compatibility, and robust protection against OCP, I-OVP, BO, OFP, and oOVP without external circuitry.

Technical Context

The HVLED001A implements a QR flyback control architecture with valley-switching detection via ZCD pin, where MOSFET turn-on is triggered by negative-going edges synchronized to transformer demagnetization. Its PSR loop uses ZCD voltage sampling and internal multiplier gain (kp = 0.4 typ.) to compensate for input voltage variation in output voltage regulation.

Startup relies on an integrated 800 V HVSU pin that charges VCC through a single resistor; during operation, HVSU monitors line voltage for HPF correction and overvoltage protection (570 V surge threshold). The ART timer ensures latch-free recovery from fault conditions like brownout or optocoupler failure within 2.5 s typical.

Key Specifications

Pinout & Package

The HVLED001A is housed in a 10-pin SSO10 (Small Outline, 10-lead, exposed pad) package with creepage >5 mm and thermal resistance R_thJA = 120 °C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LED controller applications.

Compared with NCL30002 and ICE2QS03G, the HVLED001A uniquely combines 800 V HVSU, PSR+opto dual-mode feedback, and ART-based fault recovery - making it the only option capable of single-stage 75 W HPF drivers with zero external protection components and universal AC input coverage.

Availability

HVLED001A is available at Aetrix Electronics and suitable for architectural LED downlights, industrial high-bay lighting, and streetlight LED drivers requiring stable component supply, long-term lifecycle continuity, and compliance with EN61000-3-2 Class C.

Supply support for HVLED001A 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, sensors, and analog devices for industrial, automotive, and consumer markets.

The HVLED001A belongs to ST's LED lighting controller product line, engineered specifically for high-efficiency, high-power-factor offline LED drivers targeting commercial and industrial lighting applications with stringent reliability and regulatory requirements.

FAQ

What is the maximum output power supported by HVLED001A in single-stage versus two-stage LED driver configurations?

The HVLED001A supports up to 75 W in single-stage high-power-factor flyback configurations, where it handles both PFC and regulation functions. In two-stage designs-such as those with a dedicated front-end PFC stage-it supports up to 150 W in the isolated DC/DC flyback stage. This distinction arises from thermal and regulation stability limits in single-stage operation versus relaxed constraints when PFC is handled separately.

How does the HVSU pin enable direct connection to rectified AC mains without external components?

The HVSU pin integrates an 800 V-rated startup unit and input voltage sensor. During startup, it delivers 0.43 mA (typ.) charging current to the VCC capacitor through a single 1 kΩ resistor connected to rectified line. In operation, it continuously samples line voltage for HPF correction and triggers I-OVP at 570 V, eliminating the need for auxiliary windings, startup circuits, or external voltage dividers.

Can HVLED001A operate in both constant-voltage and constant-current modes simultaneously?

No - it operates in either primary-side regulated constant-voltage (PSR-CV) mode using ZCD sampling, or secondary-side constant-current (CC) mode using optocoupler feedback on the FB pin. However, the FB pin supports hybrid configurations: PSR sets baseline output voltage while optocoupler fine-tunes current, enabling tighter regulation in demanding applications like medical or horticultural lighting.

What protection features are implemented without requiring external components?

HVLED001A integrates overcurrent protection (OCP) with 750 mV CS threshold and saturation detection at 1.1 V, input overvoltage protection (I-OVP) triggered at 570 V on HVSU, brownout detection via ZCD sink current (65–140 µA), optocoupler failure protection (OFP) at 2.95 V on FB, and output overvoltage protection (oOVP) using internal ZCD-based monitoring - all without external comparators, resistors, or timers.