STEVAL-ILL067V1

Six-channel ALED7707 based LED driver evaluation board with embedded boost converter for automotive interior lighting and TFT backlighting. The purpose of this evaluation board is to provide an application example of a six-channel, medium current LED driver using the ALED7707 chip. The monolithic boost converter provides the required LED supply voltage starting from a single supply rail, while the brightness of the LED strings connected to the six outputs is controlled through a PWM signal. Open LED and LED short-circuit fault conditions are detected and managed. The board has been designed to provide a compact reference solution for automotive applications involving several LEDs arranged in multiple strings (e.g. interior lighting, infotainment LCD backlighting, etc).

• Wide DC input voltage (6V - 32V)
• Six 70 mA output channels (capable of 30mA to 85mA each)
• PWM brightness control (10µs minimum dimming on-time)
• Up to 10 white LEDs per channel (36V OVP threshold)
• <gt/> 90% efficiency (VIN=12V, VBOOST=30V, fSW=1MHz, no snubber)
• On-board input filter for conducted EMI reduction
• All automotive grade components