Solutions for LED drivers - Infineon Technologies (2024)

Create innovative and differentiated LED lighting power supply units with our solutions for high-density LED drivers with wide dimming range:

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Learn more on linear LED drivers ICs

Linear LED controller ICsfor dimmable LED applications are a perfect fit for LED applications such as light engines, modules, and strips by combining a small form factor with a low cost.
Through its higher integration, BOM savings and protecting long lifetime of LEDs, these LED driver and power supply controller ICs have many advantages over discretes and resistor-based solutions.

TheBCR-familycontrols the driving current under all conditions. Compared to using a limiting resistor this increases the longevity and reliability of your system and also allows the usage in outdoor or automotive LED driver applications featuringPWM dimming at high dimming frequencies, allowing flicker-free light.

Constant Current LED Driver

It is important to know what the difference is between a constant current LED driver compared to an LED driver with constant voltage when choosing which LED driver to use. The main difference between an LED driver with constant current vs constant voltage, is that a constant current LED driver is designed to operate within a certain range of output voltages and has a fixed output current, while a constant voltage LED driver is designed for a single DC output voltage.

Desired features of a dimmable constant current LED drivers are high efficiency, high power factor (PF), low total harmonic distortion (THD), and a stable output current. They are a suitable option for high quality LED lighting such as streetlights, high-bay lighting, or office lighting.

LED driver designs - high efficient ACDC conversion powering your LED lighting application

Typically, LED drivers to provide a constant current to LED light engines for applications such as commercial indoor lighting, street lighting, and high bay lighting. The topology used in LED lighting driver design depends on the power rating and feature set. Low-power and cost-sensitive LED driver designs for lighting applications usually turn to single-stage flyback topology. For LED driver circuit designs with 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 for LED lighting driver design. This topology supports intelligent lighting features as well as low dimming levels and other features. Ultimately, when deciding how to design the LED driver circuit, the topology most suitable for your design depends on the specific features to implement and your platform concept. Learn more about LED driver design basics with our AC-DC LED driver design guide and our Lighting ICs in general.

Smart LED lighting control

There is an increased demand forsmart lighting solutionsin commercial and residential buildings to reduce installation, maintenance, and operating costs. A reduction of energy consumption, while still increasing the comfort and attractiveness for users and tenants, needs to be achieved.

LED power supply units and LED drivers with integrated NFC interfaces are becoming increasingly common. With the NFC enabled LED driver, the LED output can be easily programmed during the manufacturing, installation and maintenance using the professional NFC reader devices.

The benefits of this technology are the wireless linking and programming of the LED driver. No cable is needed to connect the LED driver power supply to the user interface and multiple drivers can be controlled without effort. Also, enhanced diagnosis functions can be realized by using the NFC communication for maintenance purposes ofLED lighting systems.

Create innovatively and differentiated LED lighting power supply systems with our latest NFC ICs combined with highly efficient power management solutions for high-density LED drivers with a wide dimming range.

Semiconductors for LED driver

The type of LED drivers used in an LED lighting application has a significant impact on key system performance indicators such as:

Efficiency
Dimming capability
Power quality, i.e. PFC/THD
Light quality, i.e. ripple/flicker
Configurability of parameters, i.e. output current
Ability to support add-on features such as power monitoring
Product lifetime System efficiency can be influenced by the choice of topology and the type of components used.

A resonant topology, for instance, can increase LED driver efficiency by 4–5 percent. The right MOSFETs, a high-voltage start-up cell, as well as synchronous rectification, can also have a positive impact. Dimming down to 1 percent light output has become mainstream for indoor lighting. Design strategies usually use analog dimming to a certain level and then switch to PWM dimming for lower levels. Many customers demand compliance with PFC and THD regulatory requirements at 50 percent dimming. LED driver power supply based on a single-stage flyback topology usually have an output current ripple of ±30 percent.

Growing dissatisfaction with this ripple is fueling widespread adoption of two-stage topologies, i.e. single-stage PFC flyback combined with a secondary buck regulator. To date, DIP switches have been typically deployed to configure the output current of LED drivers. The trend is now moving towards more elegant methods and LED driver PCB design, with LED driver manufacturers and lighting fixture makers opting for NFC technology, for example. Digital controllers with a digital interface such as UART enable designers to implement power monitoring at the luminaire level.

Mixed-signal PFC and flyback controllers

Single stage flyback topology with constant Voltage output with IRS2982S and CoolMOS 800V P7

Features	Benefits
Integrated 600 V high-voltage start-up cell Multi-mode operation, DCM operation at light loads (minimum off-time) Overvoltage protection Burst-mode operation at very light loads	Integrated start-up cell enables very high efficiency for wide-range input designs combined with fast time-to-light Optimal efficiency, power factor and THD can be achieved by most suited mode. In addition, DCM eases compliance with EMI at low load condition by limiting the switching frequency

PFC stage with IRS2505L and CoolMOS 600V P7

Features	Benefits
SOT23-5 package High power factor and ultra-low THD over a wide input range Zero crossing sensed via the gate drive PFC inductor auxiliary winding not necessary Critical Conduction Model (CrCM) operation – low switching losses	70% smaller than a conventional SO8 package Gate driver optimized to eliminate switch-off diode Cycle-by-cycle overcurrent protection Micro power start-up – very low start-up losses

CCM PFC stage with ICE2PCS0XG/ICE3PCS0XG and SiC diode

For power ranges above 300 W, CCM PFC mode offers benefits in terms of efficiency compared to DCM PFC mode.

Features	Benefits
Trimmed internal reference voltage (2.5 V ±1.2%) Low peak current limit threshold Bulk “voltage good” signal for inrush relay control or PWM IC enabling Integrated digital voltage loop compensation Programmable switching (20-100 kHz) External synchronization (50 ~ 100 kHz) Direct sensing, input brown-out detection with hysteresis	Enhanced dynamic response Ease of use with few external components External current compensation for greater user flexibility

SiC diodes for high-power applications

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SiC diodes enable highest efficiency in combination with CCM PFC Controllers in high power LED applications

Features	Benefits
No reverse recovery charge Purely capacitive switching High operating temperature (Tj , max 175 °C)	System efficiency improvement compared to Si diodes Reduced cooling requirements Enabling higher frequency/increased power density Higher system reliability Reduced EMI

Digital flyback controllers

PFC flyback topology with 0-10 V dimming with XDPL8105 and CoolMOS 800V P7

XDPL8105 is a primary-controlled high-performance single-stage PFC/flyback controller with constant current output.

Features

Benefits

Multi-mode operation, quasi-resonant, discontinuous conduction mode (DCM)
Active burst mode (ABM)
Integrated 600 V start-up cell
Configurable parameters
Supports fully isolated 0 – 10 V dimming

Optimal efficiency, power factor and THD can be achieved by most suited mode. In addition, DCM eases compliance with EMI at low load condition by limiting the switching frequency
ABM enables low-level analog dimming
Integrated start-up cell enables very high efficiency for wide-range input designs combined with fast time-to-light
Configurability of parameters like output current, protection modes and dimming curves enables last-minute adjustments, reducing stockkeeping

PFC flyback topology with 0-10 V dimming with XDPL8210 and CoolMOS 800V P7

XDPL8210 is a primary-controlled single-stage PFC/flyback controller with constant current output that supports 1% dimming.

Features	Benefits
All features included in XDPL8105 1% dimming Supports 0-10 V dim-to-off powering the dimmer Limited Power (LP) mode PWM dimming input pin Enables BOM savings for the dimming circuit	All benefits included in XDPL8105 Well suited for indoor lighting application where 1% dimming is required Cost savings for an additional auxiliary power supply for the 0-10 V dimmer Well suited for outdoor lighting in cold areas since LP mode enables start-up of LEDs even when their forward voltage is above the nominal output voltage

PFC flyback topology with very low standby power dimming with XDPL8219 and CoolMOS 800V P7

XDPL8219 is a primary-controlled single-stage PFC/flyback controller with constant voltage output with very low stand-by power enabling smart lighting applications.

Features

Benefits

Secondary-Side-Regulated (SSR) Constant Voltage (CV) output
Enhanced power factor correction
Depending on load condition, either quasi-resonant, discontinuous conduction mode or active burst mode (ABM)
Integrated 600 V start-up cell

Supporting wide load range and fast and stable reaction to dynamic load changes
PFC > 0.9 can be achieved at 33% load at most severe condition (277 V input at 60 Hz)
Optimal efficiency, power factor and THD can be achieved by most suited mode. In addition, DCM eases compliance with EMI at low load condition
Very low stand-by power < 100 mW can be achieved
Integrated start-up cell enables very high efficiency

Two-stage intelligent & configurable PFC plus flyback controller with XDPL8221 and CoolMOS 600V P7 and CoolMOS 800V P7

XDPL8221 includes UART communication including dimming via UART and reading out of data like fault condition and power monitoring.

Features	Benefits
Two-stage Power Factor Correction (PFC) and flyback controller Primary-Side-Regulated (PSR) multi-mode control: Constant Current (CC), Constant Voltage (CV) and Limited Power (LP) Extra UART dimming control Control driver output and reading operating status through UART	Best choice for advanced LED driver, smart lighting and IoT applications Less than 1% flicker-free dimming Maximize flexibility of system design thanks to window programmability Long lifetime of service

PFC plus half-bridge resonant controllers

PFC+ half-bridge topology with ICL5102 and CoolMOS 600V P7

ICL5102 is a PFC plus half-bridge resonant controller that has excellent PFC and THD performance combined with high-frequency operation in order to minimize the bill of materials.

Features	Benefits
Integrated two-stage combination controller › Supports universal AC nominal input voltage (90 to 305 VRMS) Excellent system efficiency of up to 94% THD optimization ensures low harmonic distortion (Total Harmonic Distortion (THD) < 5%) down to 30% nominal load Maximum 500 kHz HB switching frequency and soft-start frequency up to 1.3 MHz	Simplify system design for PFC plus LLC/LCC topologies with less component counts and optimized bill of materials (BOM) and form factor Address global platforms with one IC Strong efficiency, PF and THD performance packaged in a combo-IC Integrated coreless transformer offers robustness against dV/dt, negative voltage Minimize form factors due to high switching frequency capability

PFC resonant + half-bridge topology with ICL5102HV and CoolMOS 900V C3 & CoolMOS 950V P7

ICL5102HV is a PFC plus resonant combo controller that has excellent PFC and THD performance combined with high-frequency operation in order to minimize the bill of materials

Features	Benefits
All features mentioned in ICL5102 High Voltage (HV) version supports (90 to 480 V_RMS)	All benefits mentioned in ICL5102 ICL5102HV can be used in street lighting, horticultural lighting and industrial lighting where 480 V AC is used as input voltage

DC-DC buck converters and smart linear controller

ILD8150 – 80 V DC-DC buck LED driver IC

ILD8150 is a DC-DC LED driver IC with 80 V breakdown voltage with an integrated MOSFET.

Features	Benefits
Input voltage up to 80 V Integrated MOSFET for up to 1.5 A output current › Hybrid dimming down to 0.5% Current precision ±3% Soft-start, UVLO, current limitation, low-power shutdown	High safety margin for voltage transients and spikes Optimal BOM due to integrated MOSFET Deep dimming performance without flicker and noise via innovative one-pin hybrid method High current precision leads to high light quality Fast, stable and efficient regulation

ILD6150 – 60 V DC-DC buck LED driver IC

ILD6150 is a DC-DC LED driver IC with 60 V break-down voltage with an integrated MOSFET.

Features	Benefits
Input voltage up to 60 V Integrated MOSFET for up to 1.5 A output current PWM or analog input for dimming Thermally enhanced DSO-8 exposed pad package	Well suited for LED drivers with SELV Optimal BOM due to integrated MOSFET Flexibility for dimming input Thermally robust product

BCR601 – 60 V linear LED controller with active headroom control

BCR601 is a linear controller that enables high efficiency at low cost as a second-stage LED controller to replace DC-DC buck converters especially in low- to mid-power LED drivers.

Features	Benefits
Input voltage up to 60 V Voltage feedback to primary side Can be operated with either BJT or N-channel MOSFET Analog dimming down to 3% Current precision ±3% OTP, OVP, hot-plug protection	Well suited for LED drivers with SELV Reducing voltage overhead and power loss in transistor for better system efficiency Cost and performance can be optimized by selection of BJT or N-channel MOSFET High light quality without flicker Safe operation

IRS2982 – universal controller for high voltage buck

IRS2982 is a multi-mode LED driver IC that can be used for the flyback stage mainly for constant voltage output as well as for the buck stage of non-isolated PFC boost followed by a high-voltage buck.

Features	Benefits
Integrated 600 V high-voltage start-up cell Multi-mode operation, DCM operation at light loads (minimum off-time) Overvoltage protection Burst-mode operation at very light loads	Integrated start-up cell enables very high efficiency for wide-range input designs combined with fast time-to-light Optimal efficiency, power factor and THD can be achieved by most suited mode. In addition, DCM eases compliance with EMI at low load condition by limiting the switching frequency

CoolMOS™ – high-voltage MOSFETs

Trusted leader in high-voltage MOSFETs

CoolMOS™ is an extremely well-established technology in LED driver applications. The main reasons why LED driver customers choose CoolMOS™ include:

Proven quality and reliability
High efficiency
High-volume supply capability
Continuous portfolio expansion

For new designs, many LED driver makers are opting fort he newest generation of CoolMOS™, namely the P7 family. Highlights of this latest generation include the best price/performance ratio and highly granular R_DS(on) classes combined with diverse packages.
The SOT223 package, footprint-compatible with standard DPAK packages, has been a great success story in the lighting industry.

Another product family that has seen very high traction among lighting customers is the 950 V P7 family. Optimized for flyback topologies, where breakdown voltages above 800 V are required, 950 V P7 devices are emerging as the solution of choice among our customers.
Our 600 V P7 portfolio is designed for high efficiencyacross all higher-power applications with an R_DS(on) of up to 600 mΩ. For lower-power applications that require 600 V with an R_DS(on)of > 600 mΩ, we recommend either 600 V CE or 700 P7 devices. 700 V P7 is well suited to the PFC and flyback stage. 600 V CE is a universal solution that can be used in all low-power topologies with an R_DS(on) of > 600 Ω.
Aware that security of supply is a key success factor for ourcustomers, we usually manufacture our products at multiple factories. This aspect might be considered for designswhere superior performance of CoolMOS™ can help todifferentiate your products from competitors.

950 V CoolMOS™ P7

Designed to meet growing consumer needs in the high-voltage MOSFET arena, the latest 950 V CoolMOS™ P7 technology focuses on lighting.

The new 950 V CoolMOS™ P7 series delivers best-in-class performance in terms of efficiency, thermal behavior and ease of use. Like all other P7 family members, the 950V CoolMOS™ P7 series comes with an integrated Zener diode for ESD protection. This integrated diode considerably improves ESD robustness, thus reducing ESD-related yield loss and offering exceptional ease of use.
Plug-and-play at 90 V AC in a 40 W adapter reference design, featuring the snubberless concept, demonstrates excellent efficiency gains of up to 0.2 percent, plus lower MOSFET temperatures with drops of up to 5.2°C compared with similar competitor technology.
In the DPAK package, the 950 V CoolMOS™ P7 also offers best-in class R_DS(on). This SMD device has an R_DS(on) of 450mΩ – more than 60 percent lower than that of the closest competitor.

Best-in-class DPAK R_DS(on)Customer benefits

Option to change from leaded to SMD packages
High power density
Lower BOM
Lower production cost

800 V CoolMOS™ P7

With the 800 V CoolMOS™ P7 series, we have set a benchmark in 800 V superjunction technologies, combining bestin-class performance with remarkable ease of use. This new product family is a perfect fit for flyback-based LED driver applications. It is also suitable for PFC stages, offering a price/performance ratio to meet all market needs.

This technology optimizes key parameters to deliver bestin-class efficiency and thermal performance. As demonstrated through comparisons with a standard, commercially available 80 W LED driver, it reduces switching losses (E_oss) and output capacitance (C_oss) by more than 45 percent while significantly improving the input capacitance (C_iss) and gate charge (Q_G). All of which leads to a 0.5 percent increase in efficiency at light load, which helps to reduce standby power in the end application. At full load, the observed improvement is up to 0.3 percent for efficiency coupled with a 6°C drop in device temperature.

Solutions for LED drivers - Infineon Technologies (18)

As mentioned in the introduction, the choice of MOSFET will influence system efficiency. Due to benchmark switching losses, the 800 V CoolMOS™ P7 series can achieve very high levels of system efficiency. This efficiency gain relative to market-standard products widens under dimming conditions.

Compared with the competition, the 800 V CoolMOS™P7 technology allows designers to integrate much lower RDS(on) values into small and cost-effective packages such as DPAK. The same applies to even smaller and low-cost packages like SOT223. The 800 V P7 in a SOT223 package is footprint-compatible with the DPAK.

Solutions for LED drivers - Infineon Technologies (19)

CoolMOS™ P7 sets a new benchmark in best-in-class DPAK R_DS(on)Customer benefits

High power density
Lower BOM
Lower production cost

The complete P7 platform has been developed with an integrated Zener diode to protect against electrostatic discharge (ESD). This increases the overall device ruggedness up to Human Body Model (HBM) class 2.

700 V CoolMOS™ P7

Features

High-performance technology
Low switching losses (Eoss)
Highly efficient
Excellent thermal behavior
Support for high-speed switching
Integrated protection with Zener diode
Optimized V_GS(th) (3 V) with very narrow tolerance (±0.5 V)
Highly granular portfolio

Benefits

Cost-competitive technology
Further efficiency gain at higher switching speeds
Smaller magnetic size with lower BOM
High ESD ruggedness up to HBM class
Easy to drive and design-in
Enabler for smaller form factors and high power density designs
Best-fit product for demanding applications

There are two main use cases for 700 V LED drivers. The main one is as a PFC stage for outdoor lighting, where 600 V might be borderline. For outdoor lighting, some LED driver designs have been deploying 650 V MOSFETs due to higher surge requirements relative to indoor lighting schemes. 700V CoolMOS™ P7 is a highly cost-effective alternative to the 650 V MOSFETs with the added bonus of extra buffer.

The second use case is as a single-stage flyback design for narrow-range systems with 120 V and 230 V input voltages. 800 V MOSFETs will probably remain the devices of choice for single-stage flyback designs. Rising cost pressures for some narrow-range designs may position 700 V as a cost-effective alternative to 800 V MOSFETs.

600 V CoolMOS™ P7

The 600 V CoolMOS™ P7 can be used for very different stages within LED drivers.

PFC stage
Half-bridge stage
Buck stage

It offers the highest efficiency and improved power density due to significant reduction in gate charge (Q_G) and switching losses (E_OSS) levels, coupled with optimized R_DS(on).

The carefully selected integrated gate resistors enable very low ringing tendency. The body diode is exceedingly robust against hard commutation, making it suited to hard- and soft-switching topologies such as LLC.
In addition, excellent ESD capability helps to improve the manufacturing quality.
The 600 V CoolMOS™ P7 family offers a wide range of RDS(on)/ package combinations, including THD and SMD devices, with RDS(on) scaling from 24 to 600 mΩ. This device offers the most competitive price/ performance ratio of all 600 V CoolMOS™ offerings.
Above 600 mΩ, a 600 V CE is recommended.

Features

Suitable for hard and soft switching (PFC and LLC) due to outstanding commutation ruggedness
Optimized balance between efficiency and ease of use
Significant reduction of switching and conduction losses leading to low MOSFET temperature
Excellent ESD robustness > 2 kV (HBM) for all products
Better R_DS(on)/package combinations than the competition
Large portfolio with granular R_DS(on) values, qualified for avariety of industrial and consumer applications

Benefits

Ease of use and fast design-in thanks to low ringing tendency and suitability for PFC and PWM stages
Improved efficiency and simplified thermal management due to low switching and conduction losses
Higher manufacturing quality due to > 2 kV ESD protection
Increased power density by decreasing device footprint
Suitable for a wide variety of applications and power ranges

OptiMOS™ 5 – medium-voltage MOSFETs

Solutions for LED drivers - Infineon Technologies (23)

150 V OptiMOS™ 5 for synchronous rectification

The wide OptiMOS™ portfolio ranging from 100 V to 250 V enables the highest efficiency levels in synchronous rectification. OptiMOS™ consistently sets the benchmark for key design success factors including RDS(on), leading to reduced power losses and improved overall efficiency.

Features	Benefits
Ultra-low reverse recovery charge Suitable for low-voltage drives R_DS(on) up to 25 percent lower than next-best alternative in SuperSO8 Q_rr without compromising FOM_gd and FOM_OSS	Increased commutation ruggedness Significant drop in design effort Optimized system efficiency

NFC IC for configuration

NLM0010/NLM0011

Infineon’s NLM0011 is a dual-mode NFC wireless configuration IC with CLO and Pulse Width Modulation (PWM) output, primarily designed for LED applications to enable NFC programming. In addition, advanced features such as the Constant Lumen Output (CLO) as well as the on/off counting are integrated, with no need for an additional microcontroller. The NLM0010 is a light version of the NLM0011 without CLO function.

Features	Benefits
Configurable Pulse Width Modulation (PWM) output NFC contactless interface compliant with ISO/IEC 18000-3 mode 1 (ISO/IEC 15963) Constant Lumen Output (CLO) with 8 configurable points for NLM0011 Integrated operation-time counter (OTC) and on/off counter Non-Volatile Memory (NVM) including UID	Fast and cost-effective implementation of NFC programming and CLO without the need for an additional microcontroller Compatible with most analog LED driver designs using “plug-in resistor” method Stable PWM output with fixed 2.8 V amplitude and ±0.1% duty cycle accuracy Internal voltage regulator (LDO) to avoid influence of unstable external supply voltage

0–10 V dimming interface IC

CDM10V – integrated analog-to-PWM converter for 0–10 V dimming

Features

Benefits

Simplest 0–10 V dimming IC with default settings
5% minimum duty cycle
1 kHz PWM frequency
200 µA dimmer/resistor bias current
Dim-to-off disabled
The simple one-time programmable option allows setting selection in a wide range
Minimum duty cycle: 1%, 2%, 5%, 10%
PWM output frequency: 200 Hz, 500 Hz, 1 kHz, 2 kHz
Dimmer/resistor bias current: 50 µA, 100 µA, 200 µA, 500 µA
Dim-to-off: disabled/enabled
Wide input V_CC range from 11 to 25 V
Transparent PWM mode (PWM bypass mode in dim-to-off-enabled mode)

› Replace many external components with a single chip, reducing BOM and PCB space
Minimize variation from device to device thanks to embedded digital signal processing
Easily customizable to design requirements
Suitable for various V_CC scenarios
Wide input V_CC range from 11 to 25 V
Versatile in complex dimming design