Evaluation Board for BCR430U LED Driver
Manufactured By:Infineon Technologies
Part Number:BCR430ULEDBOARDTOBO1
This is an engineering report for a 24 V, 100 mA linear LED driver evaluation board. This document contains the technical specification for the LED driver, a description of the main features, and circuit and layout descriptions, as well as the measurement results.
In this application, an Infineon BCR430U is used as an LED driver IC. It regulates the LED current in standalone operation without any external power transistor. The LED current level can be adjusted up to 100 mA by connecting a high ohmic resistor Rset to pin RS. The default LED current is set to 50 mA with an Rset of 12 k?.
The voltage drop at the integrated LED driver stage can typically go down to 135 mV (refer to Figure 12), improving the overall system efficiency and providing extra voltage headroom to compensate for tolerances of LED forward voltage or supply voltage. A smart over-temperature protection function reduces the LED current
when the junction temperature of BCR430U is very high.
Applications:
In this application, an Infineon BCR430U is used as an LED driver IC. It regulates the LED current in standalone operation without any external power transistor. The LED current level can be adjusted up to 100 mA by connecting a high ohmic resistor Rset to pin RS. The default LED current is set to 50 mA with an Rset of 12 k?.
The voltage drop at the integrated LED driver stage can typically go down to 135 mV (refer to Figure 12), improving the overall system efficiency and providing extra voltage headroom to compensate for tolerances of LED forward voltage or supply voltage. A smart over-temperature protection function reduces the LED current
when the junction temperature of BCR430U is very high.
Applications:
- LED strips
- Architectural LED lighting
- LED displays and channel letters
- Emergency lighting
- Retail lighting
- White good lighting
Features
- Typical 135mV saturation voltage at 50mA
- Typical input voltage 24V using onboard LEDs
- Default LED current 50mA (adjustable from 5mA to 100mA)
- Smart over temperature protection
- Very low voltage drop allows to use more LEDs (in a string)
- Stable output current for homogenous light output
- Smart over temperature protection to avoid degradation of LEDs over lifetime
Ships With
- BCR430U LED Driver Board