LED driver solutions for electric two- and three-wheelers

Accelerate your LED driver design with LITIX™ ICs purpose-built for e-bikes, electric motorcycles, and motor scooters.

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Overview

Infineon's LED driver solutions for light electric vehicles (LEV) deliver complete electronic systems for electric motorcycles, e-bikes, and electric scooters. Our LED driver circuits provide specialized LED control, LED supply, and communication functions with advanced protection and diagnostic capabilities for lighting in electric two-wheelers and three-wheelers.

Benefits

  • High reliability for LEVs
  • Battery-optimized efficiency
  • State-of-the-art protection
  • Advanced diagnosis feature set
  • Compact, LEV-optimized design
  • Wide 12 V–60 V input range
  • PWM dimming for DRL and welcome
  • AEC-Q100 automotive qualified

Block diagram

About

Discover Infineon's LED driver solution portfolio for LEVs

Infineon offers reliable and efficient LED driver solutions for light electric vehicles: electric motorcycles, electric motor scooters, e-bikes, electric kick scooters, electric rickshaws, and more.

Our portfolio covers the full LED driver design signal chain — constant current LED driver controllers, synchronous DC-DC converters, and OptiMOS™ power MOSFETs — all optimized for LEV battery voltage levels and efficiency targets.

Auxiliary LED driver circuit functions:

  • PWM dimming: BSS606N, AUIRLL024Z (N-ch MOSFETs for LED chain switching)
  • Reverse polarity protection: IPD50P03P4L-11 (–30 V, P-Ch, 10.5 mΩ max)

 

LITIX™ LED driver controller portfolio:

  • LITIX™ Power: DC-DC controller for medium- to high-power LED operations and for general voltage supply
  • LITIX™ Power Flex: DC-DC controller optimized for high-efficiency, high-power LED operation as well as for general voltage supply

 

OptiMOS™ single- and dual N-/P-channel MOSFETs complete the LED driver circuit design with low on-resistance and compact footprint.

 

Explore LITIX™ LED driver ICs and OptiMOS™ automotive MOSFETs — or discover LED driver solutions for general lighting.

LITIX™
OptiMOS™

High-end LED driver circuit for two- & three-wheelers (LED Pout >35 W)

High-end headlamps (Class C&D) for e. g. electric motorcycles and premium motor scooters require an LED driver design delivering maximum lumen output, intelligent lighting functions, and robust performance.

 

Key design requirements (LED Pout >35 W):

  • Microcontroller integration for welcome sequences, adaptive fading, and beam patterns
  • More than ten LEDs per string, total LED Pout >35 W
  • Dedicated LED string for daytime running light (DRL)
  • DC-DC buck-boost topology for load dump and cranking transients in LEV battery systems

 

The LITIX™ Power Flex LED driver IC delivers the efficiency and precise constant current regulation needed in premium electric motorcycle headlamp modules. Paired with OptiMOS™ MOSFETs, engineers achieve a compact, thermally robust LED driver circuit right for high-end LEV platforms.

Mid-range LED driver design for electric bikes (LED Pout 15–35 W)

Mid-range headlamps (Class C&D) for e. g. e-bikes and electric motor scooters prioritize efficiency — range per charge is decisive for LEV OEMs and riders alike.

 

LED driver controller design considerations (15–35 W):

  • Synchronous DC-DC converters for higher efficiency in compact two-wheeler housings
  • Same high lumen output as high-end platforms, at lower power consumption
  • Flexible DRL configuration: shared LED strings for DRL, low beam, and high beam
  • DC-DC buck-boost topology for stable LED current across the full battery discharge curve

For e-bike OEMs, every milliwatt saved in the LED driver circuit means more kilometers per charge. Infineon's LITIX™ Power series with synchronous rectification delivers the efficiency LEV OEMs need to strengthen range specifications.

Entry-level LED driver circuits for electric scooters (LED Pout <15 W)

Entry-level headlamps (Class B) for electric motor scooters, kick scooters, and electric three-wheelers require LED driver circuits that minimize BOM cost while maintaining road-legal reliability.

 

LED driver design priorities (<15 W):

  • Minimal BOM: three to five LEDs per string, total LED Pout <15 W
  • Asynchronous DC-DC converters for cost-optimized design
  • Overvoltage and reverse polarity protection — critical in electric three-wheelers
  • Compact packages for constrained PCB space in two- and three-wheeler platforms

 

Infineon's LITIX™ Power series addresses cost sensitivity without compromising protection or reliability. Rigorous automotive qualification ensures even entry-level LED driver ICs meet the standards LEV OEMs need in regulated markets across Asia, Europe, and the Americas.

LED driver block diagram for light electric vehicles: a guide

In a typical LEV headlamp, the LED driver circuit sits between the battery (12 V–60 V) and the LED array, delivering regulated constant current regardless of battery state of charge.

Key stages of the LED driver block diagram for electric two- and three-wheelers:

1. Battery input: Reverse polarity protection (IPD50P03P4L-11) and input filtering for EMC compliance against transients in electric motorcycle and scooter platforms.

2. LED driver controller (DC-DC stage): LITIX™ Power or LITIX™ Power Flex governs the topology — buck, boost, or buck-boost. Buck-boost is preferred for e-bikes and electric motorcycles to hold constant current across the full battery voltage range.

3. MOSFET switching: OptiMOS™ N- and P-channel MOSFETs minimize switching losses and heat in compact LEV housings.

4. LED string: Three to ten LEDs in series, supporting separate high beam, low beam, and DRL strings.

5. PWM dimming: BSS606N or AUIRLL024Z MOSFETs enable smooth DRL brightness adjustment and welcome sequences.

6. Diagnosis: LITIX™ ICs monitor for open-LED, short-circuit, overtemperature, and overvoltage via LIN or SPI.

Discover Infineon's LED driver solution portfolio for LEVs

Infineon offers reliable and efficient LED driver solutions for light electric vehicles: electric motorcycles, electric motor scooters, e-bikes, electric kick scooters, electric rickshaws, and more.

Our portfolio covers the full LED driver design signal chain — constant current LED driver controllers, synchronous DC-DC converters, and OptiMOS™ power MOSFETs — all optimized for LEV battery voltage levels and efficiency targets.

Auxiliary LED driver circuit functions:

  • PWM dimming: BSS606N, AUIRLL024Z (N-ch MOSFETs for LED chain switching)
  • Reverse polarity protection: IPD50P03P4L-11 (–30 V, P-Ch, 10.5 mΩ max)

 

LITIX™ LED driver controller portfolio:

  • LITIX™ Power: DC-DC controller for medium- to high-power LED operations and for general voltage supply
  • LITIX™ Power Flex: DC-DC controller optimized for high-efficiency, high-power LED operation as well as for general voltage supply

 

OptiMOS™ single- and dual N-/P-channel MOSFETs complete the LED driver circuit design with low on-resistance and compact footprint.

 

Explore LITIX™ LED driver ICs and OptiMOS™ automotive MOSFETs — or discover LED driver solutions for general lighting.

LITIX™
OptiMOS™

High-end LED driver circuit for two- & three-wheelers (LED Pout >35 W)

High-end headlamps (Class C&D) for e. g. electric motorcycles and premium motor scooters require an LED driver design delivering maximum lumen output, intelligent lighting functions, and robust performance.

 

Key design requirements (LED Pout >35 W):

  • Microcontroller integration for welcome sequences, adaptive fading, and beam patterns
  • More than ten LEDs per string, total LED Pout >35 W
  • Dedicated LED string for daytime running light (DRL)
  • DC-DC buck-boost topology for load dump and cranking transients in LEV battery systems

 

The LITIX™ Power Flex LED driver IC delivers the efficiency and precise constant current regulation needed in premium electric motorcycle headlamp modules. Paired with OptiMOS™ MOSFETs, engineers achieve a compact, thermally robust LED driver circuit right for high-end LEV platforms.

Mid-range LED driver design for electric bikes (LED Pout 15–35 W)

Mid-range headlamps (Class C&D) for e. g. e-bikes and electric motor scooters prioritize efficiency — range per charge is decisive for LEV OEMs and riders alike.

 

LED driver controller design considerations (15–35 W):

  • Synchronous DC-DC converters for higher efficiency in compact two-wheeler housings
  • Same high lumen output as high-end platforms, at lower power consumption
  • Flexible DRL configuration: shared LED strings for DRL, low beam, and high beam
  • DC-DC buck-boost topology for stable LED current across the full battery discharge curve

For e-bike OEMs, every milliwatt saved in the LED driver circuit means more kilometers per charge. Infineon's LITIX™ Power series with synchronous rectification delivers the efficiency LEV OEMs need to strengthen range specifications.

Entry-level LED driver circuits for electric scooters (LED Pout <15 W)

Entry-level headlamps (Class B) for electric motor scooters, kick scooters, and electric three-wheelers require LED driver circuits that minimize BOM cost while maintaining road-legal reliability.

 

LED driver design priorities (<15 W):

  • Minimal BOM: three to five LEDs per string, total LED Pout <15 W
  • Asynchronous DC-DC converters for cost-optimized design
  • Overvoltage and reverse polarity protection — critical in electric three-wheelers
  • Compact packages for constrained PCB space in two- and three-wheeler platforms

 

Infineon's LITIX™ Power series addresses cost sensitivity without compromising protection or reliability. Rigorous automotive qualification ensures even entry-level LED driver ICs meet the standards LEV OEMs need in regulated markets across Asia, Europe, and the Americas.

LED driver block diagram for light electric vehicles: a guide

In a typical LEV headlamp, the LED driver circuit sits between the battery (12 V–60 V) and the LED array, delivering regulated constant current regardless of battery state of charge.

Key stages of the LED driver block diagram for electric two- and three-wheelers:

1. Battery input: Reverse polarity protection (IPD50P03P4L-11) and input filtering for EMC compliance against transients in electric motorcycle and scooter platforms.

2. LED driver controller (DC-DC stage): LITIX™ Power or LITIX™ Power Flex governs the topology — buck, boost, or buck-boost. Buck-boost is preferred for e-bikes and electric motorcycles to hold constant current across the full battery voltage range.

3. MOSFET switching: OptiMOS™ N- and P-channel MOSFETs minimize switching losses and heat in compact LEV housings.

4. LED string: Three to ten LEDs in series, supporting separate high beam, low beam, and DRL strings.

5. PWM dimming: BSS606N or AUIRLL024Z MOSFETs enable smooth DRL brightness adjustment and welcome sequences.

6. Diagnosis: LITIX™ ICs monitor for open-LED, short-circuit, overtemperature, and overvoltage via LIN or SPI.

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