Diodes Incorporated AL9910AEV1

Overview

AL9910AEV1 from Diodes Incorporated is an evaluation board for the AL9910A high-voltage PWM LED buck controller, designed for offline AC-driven LED lighting systems. It delivers 140mA constant current to up to 16 series-connected LEDs (51V output), supports universal 100–240VAC input, achieves ~86% efficiency, and operates without an electrolytic capacitor by default.

For engineers reviewing the AL9910AEV1 datasheet, AL9910AEV1 pinout, AL9910AEV1 application, or AL9910AEV1 equivalent, this board enables rapid validation of high-voltage LED driver performance, line regulation (<5%), PFC behavior, ripple reduction with optional 68µF capacitor, and dimming configuration via R6 removal.

Technical Context

The AL9910AEV1 implements a non-isolated buck topology with active power factor correction, using the AL9910A IC to regulate LED current through valley-switching control. Input rectification is handled by HD06-T bridge rectifier, while DMJ7N70SK3 MOSFET provides high-voltage switching at up to 700V drain-source rating.

Output current is set by dual 1.69Ω sense resistors (R4), enabling precise 140mA operation; PWM dimming is enabled by removing jumper R6. The board's 0.6" × 2.4" PCB layout integrates discrete passive filtering (LPS5015-225ML + 13R155C inductors, 0.1µF/500V and 10µF/63V capacitors) and transient protection via SMBJP6KE440CA TVS diode.

Key Specifications

Availability

AL9910AEV1 is available at Aetrix Electronics and suitable for LED bulb development, smart lighting prototyping, and industrial LED fixture qualification requiring stable component supply, repeatable test conditions, and validated reference designs.

Supply support for AL9910AEV1 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and LED lighting solutions with ISO/TS 16949-certified operations.

The AL9910AEV1 belongs to Diodes' LED driver evaluation platform family, engineered specifically to accelerate adoption of high-efficiency, electrolytic-capacitor-free AC/DC LED drivers for cost-sensitive, long-life lighting applications.

FAQ

What is the default LED current setting on AL9910AEV1?

The board is factory-configured for 140mA LED current using two parallel 1.69Ω sense resistors (R4). This value is confirmed in the User Guide's Quick Start Guide and Functional Performance tables across all tested input voltages from 100–240VAC.

Can AL9910AEV1 drive more than 16 LEDs?

No - the board is validated for up to 16 series-connected LEDs (51V max V_LED). Exceeding this risks under-voltage lockout or unstable regulation, as the AL9910A controller's minimum off-time and inductor saturation limit practical string voltage to ~51V under tested conditions.

How does adding the optional 68µF capacitor affect performance?

Adding the 68µF electrolytic capacitor reduces LED current ripple from ~100% to ~60%, increases efficiency by ~0.2–0.5 percentage points, and improves PFC margin - verified in the User Guide's comparative functional performance tables for both 100VAC and 230VAC inputs.

Is AL9910AEV1 RoHS compliant?

Yes - the User Guide explicitly states "ROHS Compliance Yes" on Page 1, and all BOM components listed (including AL9910ASP-13, HD06-T, ES1G-13-F, etc.) are RoHS-compliant per Diodes Incorporated's published material declarations and packaging markings.