SSL8516T1Y

SSL8516T Greenchip PFC and flyback controller Rev. 1.1 13 March 2015 Product data sheet 1. General description The GreenChip is the latest generation of green Switched Mode Power Supply (SMPS) controller ICs. The SSL8516T combines a controller for Power Factor Correction (PFC) and a flyback controller. Its high level of integration enables cost-effective LED lighting application power supply design using a very low number of external components. The PFC operates in Quasi-Resonant (QR) or Discontinuous Conduction Mode (DCM), with valley switching. The specially built-in green functions provide high efficiency at all power levels. At high power levels, the flyback operates in QR mode or DCM with valley detection. At medium power levels, the flyback controller switches to Frequency Reduction (FR) mode and limits the peak current to an adjustable minimum value. It ensures high efficiency while minimizing the audible noise from the transformer. In low-power mode, the PFC switches off to maintain high efficiency. Valley switching is used in all operating modes. The SSL8516T is a Multi-Chip Module (MCM), containing two chips. The proprietary high-voltage BCD800 process makes direct start-up possible from the rectified universal mains voltage in an effective and green way. The second low voltage Silicon-On-Insulator (SOI) is used for accurate, high-speed protection functions and control. The SSL8516T enables easy design of highly efficient and reliable LED lighting application power supplies between 25 W and 300 W. LED drivers in particular benefit from the high level of integration. The IC meets the lighting class C requirements on mains current harmonics as specified by IEC 61000-3-2 over a wide input voltage range and a wide output power range. Remark: All values in this document are typical values unless otherwise stated.SSL8516T NXP Semiconductors Greenchip PFC and flyback controller 2. Features and benefits 2.1 Distinctive features Integrated PFC and flyback controller Universal mains supply operation between 90 V (AC) to 305 V (AC) Fixed boost PFC with accurate maximum output voltage (NXP Semiconductors patented) High level of integration, results in cost-effective designs with very low external component counts Adjustable PFC switch off delay External PFC switch on and switch off override Accurate PFC switch on and switch off control (NXP Semiconductors patent pending) 2.2 Green features On-chip start-up current source Power-down functionality for very low standby power 2.3 PFC green features Valley/Zero-Voltage Switching (ZVS) for minimum switching losses (NXP Semiconductors patented) Frequency limitation reduces switching losses PFC switched off when a low-load is detected at the flyback output 2.4 Flyback green features Valley switching for minimum switching losses (NXP Semiconductors patented) Frequency reduction with adjustable minimum peak current at low-power operation maintains high-efficiency at low output power levels 2.5 Protection features Safe restart mode for system fault conditions Continuous mode protection using demagnetization detection for both converters (NXP Semiconductors patented) UnderVoltage Protection (UVP) (foldback during overload) Accurate OverVoltage Protection (OVP) for both converters (adjustable for flyback converter) Mains voltage independent OverPower Protection (OPP) Open control loop protection for both converters. The open-loop protection on the flyback converter is safe restart OverTemperature Protection (OTP) Low and adjustable OverCurrent Protection (OCP) trip level for both converters General-purpose input for latched protection, for use with system OverTemperature Protection (OTP) SSL8516T All information provided in this document is subject to legal disclaimers. NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 1.1 13 March 2015 2 of 33