Marvell 88EM8182 Single-Stage AC/DC LED Driver IC for Non-dimmable Replacement Offline LED Lamps and Luminaires PRODUCT OVERVIEW The Marvell® 88EM8182 is a single-stage AC/DC constant current controller designed for offline non-dimmable LED lighting applications. 88EM8182 implements a unique primary side current control mechanism achieving very tight output current regulation over wide range AC input. It deploys the Quasi Resonant Control (QRC) and valley switching method with Power Factor Correction (PFC) offering high efficiency, high power factor, low harmonic distortion, and low Electromagnetic Interference (EMI). The 88EM8182 significantly reduces external components required for an LED driver. The primary side control topology eliminates the need to use opto-coupler and any other associated secondary feedback circuit, thus improving system reliability. It integrates a high voltage start up power supply circuit, hence the usage of external start up circuits is not required. The dramatic reduction in component count enables LED lighting adoption in cost and space challenged applications such as retrofit lamps. TARGET APPLICATIONS The Marvell 88EM8182 is ideally suited for the following LED lighting applications: • Retrofit A19, GU-10, PAR, and BR lamps • Downlight, recess, troffer, and panel lighting • LED modules 88EM8182 TYPICAL APPLICATIONS SCHEMATIC DIAGRAM Vo Np Ns LED + LED - HV Marvell AC 88EM8182 HV Start up NTC (optional) Gate Q1 LED Driver OCP/CS VDD GND Naux PSVR Fig 1. 88EM8182 Typical Application Block Diagram – Single-Stage AC/DC LED Driver IC Marvell 88EM8182 FEATURES BENEFITS • Accurate primary side current regulation - +/- 2% output current accuracy over wide range AC input • On-chip high voltage start-up circuit • Quasi Resonant Control (QRC) with Power Factor Correction (PFC) • Valley switching • High efficiency - up to 90% • High power factor - 0.99 • Low THD - <15% • Lowest BOM cost in its class - Eliminates opto-coupler and secondary feedback circuit - Eliminates startup power supply circuit • Smallest PCB space in its class - Fits in majority of replacement bulb form factors • Soft startup for reduced voltage stress • Built-in protection for open circuit, short circuit, and over-temperature • Pulse-skipping for low standby power consumption • SOIC-8-EP package • Operating temperature: -40 to 105°C (Tj max at 125°C) 88EM8182 DRIVER IC Fig 2. IC - Front / Back (enlarged) THE MARVELL ADVANTAGE: Marvell chipsets come with complete reference designs which include board layout designs, software, manufacturing diagnostic tools, documentation, and other items to assist customers with product evaluation and production. Marvell’s worldwide field application engineers collaborate closely with end customers to develop and deliver new leading-edge products for quick time-to-market. Marvell utilizes world-leading semiconductor foundry and packaging services to reliably deliver high-volume and low-cost total solutions. ABOUT MARVELL: Marvell is a leader in storage, communications, and consumer silicon solutions. Marvell’s diverse product portfolio includes switching, transceiver, communications controller, processor, wireless, power management, and storage solutions that power the entire communications infrastructure, including enterprise, metro, home, storage, and digital entertainment solutions. For more information, visit our Web site at www.marvell.com. Marvell Semiconductor, Inc. 5488 Marvell Lane Santa Clara, CA 95054 Phone 408.222.2500 www.marvell.com Copyright © 2012. Marvell International Ltd. All rights reserved. Marvell, and the Marvell logo, are registered trademarks of Marvell or its affiliates. All other trademarks are the property of their respective owners. 88EM8182-01 product brief 11/12