The right topology and features for every LED lighting design
Typically, LED drivers are deployed to provide constant current to LED light engines for applications like commercial indoor lighting, street lighting and high bay lighting. The topology used in a design depends on the power rating and feature set. Low-power and cost-sensitive LED lighting applications usually turn to single stage flyback topology. For higher power ratings and larger feature sets, dual stage topologies with a dedicated stage for power factor correction (PFC) and a dedicated stage for flyback or LLC are common.
Using primary constant voltage with secondary buck stage is a further option. This topology supports intelligent lighting features as well as low dimming levels and other features. Ultimately, the topology most suitable for your design depends on the specific features to implement and your platform concept.
Common topologies of LED drivers
Single stage: flyback – Constant Current (CC)
Non-isolated single stage buck – Constant Current (CC)
Dual Stage: PFC + FB (CC)
Dual Stage: Boost PFC + Current regulated buck
Dual stage: PFC + LLC – Constant Current (CC)
Dual stage: PFC-IC for PFC + LLC or PFC + flyback
Dual stage: PFC/FB Constant Voltage (CV) + secondary buck
Secondary buck options (CC)
Triple stage: PFC + LLC Constant Voltage (CV) + secondary buck
Secondary buck options (CC)
Overcoming today’s challenges on the LED driver market
The current LED driver market is characterized by increasing pressure to cut costs and to bring a product to market quickly. The cost of your design is directly influenced by the bill of materials, with product variants incurring additional costs due to keeping stock and R&D. Of course, your task is also to find the right topology for customer requirements.
LED drivers from Infineon
To overcome today’s challenges and accommodate the wide range of topologies on the LED driver market, at Infineon we offer LED driver ICs that support several different topologies and features. Our products for LED drivers range from analog LED driver ICs tailored to specific applications, to configurable digital ICs that help accelerate the time to market and reduce the cost of stock keeping units (SKUs) for LED driver variants.
Application notes: AC-DC LED driver ICs
Demo board high voltage resonant controller IC 110W 54V power supply using ICL5101
02_02 | Sep 22, 2015 | PDF | 3.17 mb
90 W PFC evaluation board for the IRS2505L
02_00 | Jul 23, 2015 | PDF | 1.72 mb
Application Note 55W Flyback ConverterDesign with IRS2982S controller
01_02 | May 18, 2016 | PDF | 3.67 mb
Digital DC-DC buck controller IC XDP™ digital power ILD2111 evaluation system
01_00 | Jan 07, 2016 | PDF | 3.92 mb
Application notes: DC-DC LED driver ICs
Advanced thermal protection for high power LEDs with 60 V LED controller IC ILD6150
02_02 | Mar 24, 2015 | PDF | 1.56 mb
Advanced thermal protection for high power LEDs with 60V LED controller IC ILD6070
02_01 | Jul 22, 2014 | PDF | 1.52 mb
Driving high power LEDs starting from 700mA with low cost LED controller IC ILD4001
01_01 | Jun 23, 2011 | PDF | 1.6 mb
Driving high power LEDs at 350mA with low cost LED controller IC ILD4035
01_00 | Jul 20, 2011 | PDF | 1.63 mb
Application notes: linear LED driver ICs
Driving mid power LEDs from 65mA to 200mA LED driver ICs with BCR320U and BCR420U family
01_00 | Dec 14, 2010 | PDF | 993 kb
Driving low power LEDs from 10mA to 65mA LED driver ICs with BCR401W and BCR402W family
01_00 | Feb 16, 2010 | PDF | 3.23 mb
Driving mid & high power LEDs from 65mA to 700mA with thermal protection LED controller IC BCR450
01_00 | Dec 08, 2009 | PDF | 1.8 mb
Design guide digital flyback controller IC XDP™ digital power ICL8105
01_00 | Jan 28, 2016 | PDF | 6.61 mb
Design guide Digital DC-DC buck controller IC XDP™ digital power ILD2111
01_00 | Jan 13, 2016 | PDF | 978 kb
IRS2505L uPFC™ Control IC Design Guide
Aug 09, 2015 | PDF | 941 kb
Design guide high voltage resonant controller IC for PFC and LLC converter using ICL5101
01_10 | Nov 18, 2015 | PDF | 1.46 mb
DAVE™ - free development platform for code generation
With DAVE™, our free and complete development platform based on CDT, software developers can generate a tailored software library that maximizes the potential of XMC microcontrollers. Rely on DAVE™ to help reduce complexity – and time to market.
Do more with DAVE™ Apps. Included with DAVE™ software is DAVE™ Apps, an extensive, powerful library of more than 170 applications in four categories: Service, Standard Middleware, Specific Middleware and Peripheral.
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