SSL4120 Resonant power supply controller IC with PFC for LED lighting Rev. 2 1 November 2012 Product data sheet 1. General description The SSL4120 integrates a Power Factor Corrector (PFC) controller and a controller for a Half-Bridge resonant Converter (HBC) in a multi-chip IC. It provides the drive function for the discrete MOSFET in an up-converter and for the two discrete power MOSFETs in a resonant half-bridge configuration. Efficient PFC operation is achieved by implementing functions for Quasi-Resonant (QR) operation at high-power levels and QR with valley skipping at lower power levels. OverCurrent Protection (OCP), OverVoltage Protection (OVP) and demagnetization sensing ensure safe operation under all conditions The HBC module is a high-voltage controller for a zero-voltage switching LLC resonant converter. It contains a high-voltage level shift circuit and several protection circuits including OCP, open-loop protection, capacitive mode protection and a general purpose latched protection input. The high-voltage chip is fabricated using a proprietary high-voltage Bipolar-CMOS-DMOS power logic process enabling efficient direct start-up from the rectified universal mains voltage. The low-voltage Silicon-On-Insulator (SOI) chip is used for accurate, high-speed protection functions and control. The SSL4120 controlled PFC circuit and resonant converter topology is very flexible. It can be used for a broad range of applications over a wide mains voltage range. Combining PFC and HBC controllers in a single IC makes the SSL4120 ideal for controlling compact power supplies in lighting applications, such as LED drivers. Using the SSL4120, highly efficient and reliable power supplies providing over 100 W can be designed easily which use the minimum of external components. Remark: Unless otherwise stated, all values are typical.SSL4120 NXP Semiconductors Resonant power supply controller IC with PFC for LED lighting 2. Features and benefits 2.1 General features Integrated PFC and HBC controllers Universal mains supply operation from 85 V to 305 V (AC) High level of integration resulting in a low external component count and a cost effective design Enable input to enable only the PFC or both the PFC and HBC controllers On-chip high-voltage start-up source Stand-alone operation or IC supplied from external DC source 2.2 PFC controller features Boundary mode operation with on-time control Valley/zero-voltage switching for minimum switching losses Frequency limiting to reduce switching losses Accurate boost voltage regulation Burst mode switching with soft-start and soft-stop 2.3 HBC controller features Integrated high-voltage level shifter Adjustable minimum and maximum frequency Maximum 500 kHz half-bridge switching frequency Adaptive non-overlap time Burst mode switching 2.4 Protection features Safe restart mode for system fault conditions General latched protection input for output overvoltage protection or external temperature protection Protection timer for time-out and restart Overtemperature protection Soft (re)start for both controllers Undervoltage protection for mains (brownout), boost, IC supply and output voltage Overcurrent regulation and protection for both controllers Accurate overvoltage protection for the boost voltage Capacitive mode protection for the HBC controller 3. Applications The IC is used in all LED lighting applications that require very efficient, low Total Harmonic Distortion (THD), high Power Factor (PF) and a universal mains input voltage. The SSL4120 provides a cost-effective power supply solution between 25 W and 400 W. SSL4120 All information provided in this document is subject to legal disclaimers. NXP B.V. 2012. All rights reserved. Product data sheet Rev. 2 1 November 2012 2 of 48