REFLLCBUCK4CH320WTOBO1 Infineon

ER 2005 PL39 2006 105832 320 W multichannel high-power LED driver (using ICL5102 + ILD8150) engineering report About this document Scope and purpose This document contains the specification and measurement results of the Infineon 320 W high-power (HP) LED driver with four channels of constant current (CC) output. This four-channel LED driver is composed of the ICL5102 320 W constant voltage (CV) reference board and four ILD8150 high-side DC-DC buck reference boards (REF ILD8150 DC 1.5A): ICL5102 320 W form-factor board as the pre-stage of the LED driver with CV output, using the Infineon ICL5102 dual-stage PFC + half-bridge combo controller. ILD8150 100 W form-factor board as the end-stage with CC output for direct connection to LED modules. Intended audience This document is intended for anyone wishing to design HP AC-DC converters with more output channels for LED lighting. Table of contents About this document ....................................................................................................................... 1 Table of contents ............................................................................................................................ 1 1 Introduction .......................................................................................................................... 2 2 Design features ...................................................................................................................... 5 3 Design specification ............................................................................................................... 6 4 Schematic ............................................................................................................................. 7 5 PCB layout ............................................................................................................................. 9 6 320 W HP LED driver with four-channel measurement results .................................................... 10 6.1 Performance .......................................................................................................................................... 10 6.2 Time-to-light delay ................................................................................................................................ 19 6.3 Standby power consumption ............................................................................................................... 20 7 ICL5102 320 W reference board standalone measurement results ............................................... 21 7.1 Performance .......................................................................................................................................... 21 7.2 Line current harmonics measurement ................................................................................................. 25 7.3 Start-up delay ........................................................................................................................................ 26 7.4 Standby power consumption ............................................................................................................... 27 7.5 EMI performance ................................................................................................................................... 28 7.6 Thermal measurement ......................................................................................................................... 29 8 BOM ..................................................................................................................................... 31 9 Transformers specification..................................................................................................... 35 Revision history............................................................................................................................. 37 Engineering Report Please read the Important Notice and Warnings at the end of this document V 1.0 www.infineon.com/ref-llc-buck-4ch-320w page 1 of 38 2020-06-19 320 W multichannel high-power LED driver (using ICL5102 + ILD8150) engineering report Introduction 1 Introduction The Infineon 320 W LED driver with four CC output channels is intended to show the benefits of designing multichannel HP LED drivers using Infineon controller ICs ICL5102 and ILD8150. ICL5102 is a PFC + half-bridge combo controller with the following features: High system (PFC + half-bridge) efficiency up to 95 percent by resonant topology Excellent input power quality with high power factor (PF) and low total harmonic distortion (THD) High robustness against surge and environmental stress due to high-side driver with coreless transformer ILD8150 is a DC-DC high-side buck controller with the following features: Wide input voltage range from 8 to 80 V with output current up to 1.5 A Integrated high-side MOSFET with up to 2 MHz switching frequency Hybrid (analog + pulse width modulation/PWM) output dimming The four-channel 320 W LED driver is composed of the ICL5102 320 W CV reference board and four ILD8150 high- side DC-DC buck reference boards, as follows: The ICL5102 320 W reference design is an AC-DC converter with CV output, which has a universal input of 90 to 305 V AC. The output voltage is a constant 73.5 V DC with a wide load range of 0 to 4.35 A. There are four output connectors intended for easy connection to the ILD8150 reference boards. The 320 W reference design is ready for evaluation after correct setup. Please connect the AC input and DC output as shown in Figure 1. AC Input DC Output N - + L PE 4 Connectors to ILD8150 reference boards Figure 1 ICL5102 320 W CV reference board top side Figure 2 ICL5102 320 W CV reference board bottom side Engineering Report 2 of 38 V 1.0 2020-06-19