LED power supply

Products and reference designs

LED power supply

Block diagram

Overview

Light-emitting diode (LED) drivers and LED power supply units are used across a wide range of indoor and outdoor LED luminaires. The power supplies focus on meeting criteria for efficiency, power factor (PF), total harmonic distortion (THD), emission, thermal management and specific standards such as UL, EN and IEC.

Design requirements

    Modern LED power supply designs require:

  • Several options for dimming that are integrated in LED drivers including wireless connectivity.
  • Many drivers programmable for setting the voltage, current limits and dimming options.
  • Reference designs that demonstrate ways to implement simple and efficient LED driver power supplies as well as innovative features such as wireless connectivity.

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Block diagram

Find products and reference designs for your system.

LED power supply

12V 12V AC Mains Input AC Mains Input FB FB ADIM ADIM 0-10V Dimming 0-10V Dimming Power Stage Power Stage Rectifier, Filter Rectifier, Filter Low Voltage MOSFET Low Voltage MOSFET Sync Buck Controller Sync Buck Controller Low Voltage MOSFET Low Voltage MOSFET Non-Isolated DC/DC Power Supply Non-Isolated DC/DC Power Supply LDO LDO LDO LDO LDO LDO LED String/LED COB LED String/LED COB 3.3V 3.3V 12V 12V 10V 10V Wireless Interface Wireless Interface NFC NFC Self Diagnosis/Monitoring Self Diagnosis/Monitoring Thermistor Thermistor Supervisor Supervisor Digital Processing Digital Processing MCU MCU OPTO(2) OPTO(2) OPTO OPTO DALI Interface DALI Interface PWM Dimming PWM Dimming OPTO OPTO ADIM ADIM LED Power Supply LED Power Supply FB FB Isolated AC/DC Power Supply Isolated AC/DC Power Supply PFC Controller PFC Controller High Voltage MOSFET High Voltage MOSFET LLC Controller LLC Controller Half bridge FET driver Half bridge FET driver Rectifier, EMI Protection Rectifier, EMI Protection LLC Transformer LLC Transformer Flyback Controller Flyback Controller High Voltage MOSFET High Voltage MOSFET Flyback Transformer Flyback Transformer Aux Power Supply Aux Power Supply LED Power Supply LED Power Supply High Voltage MOSFET(2) High Voltage MOSFET(2) Current & Voltage Sense Current & Voltage Sense Op-Amp Op-Amp Voltage Ref Voltage Ref Op-Amp Op-Amp Current Sense Amp Current Sense Amp OPTO (Feedback) OPTO (Feedback) OPTO (PWR On/Off) OPTO (PWR On/Off) Signal Input/Output Protection Signal Input/Output Protection ESD ESD Analog Front-End Analog Front-End DAC DAC Op-Amp Op-Amp Op-Amp Op-Amp 0-10V Analog to PWM 0-10V Analog to PWM

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