STEVAL-ILL071V1, LED Backlight Demonstration Board based on the STP04CM05, ST1S40 and STM32F030
Reference Design using part STP04CM05XTTR by STMicroelectronics
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Associated Documents
For End Products
- LED Lighting
Description
- STEVAL-ILL071V1, LED Backlight Demonstration Board based on the STP04CM05 high current LED driver, the ST1S40 step-down DC-DC converter and the STM32F030 ARM Cortex-M0 microcontroller. This board features 24 LEDs (8 LED strings with 3 LEDs per string) but additional modules can be cascaded for a larger backlight area. Possible application may be extended to any LED lighting system based on integrated LED drivers. The design optimizes the LED driver rail voltage such that dissipation within the driver is minimized. It employs an adaptive process to compensate for aging effects of the LEDs (forward LED voltage increases with time). This is achieved by tracking the drop across the LED string using the ADC of the STM32F030 and acting accordingly on the feedback pin of the ST1S40 (via PWM) to adjust rail voltage until the LED driver comes out of constant current mode
Key Features
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Output Power1 to 25 W
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Number of Derived Elements24
Featured Parts (4)
| Part Number | Manufacturer | Type | Description | |||
|---|---|---|---|---|---|---|
|
STM32F030C6T6TR | STMicroelectronics | Microcontrollers - MCUs | MCU 32-bit ARM Cortex M0 RISC 32KB Flash 2.5V/3.3V 48-Pin LQFP T/R | Buy | |
|
ST1S40IDR | STMicroelectronics | DC to DC Converter and Switching Regulator Chip | Conv DC-DC 4V to 18V Synchronous Step Down Single-Out 0.8V to 18V 4A 8-Pin SO N T/R | Buy | |
|
HCF4051YM013TR | STMicroelectronics | Analog Switch Multiplexers | Analog Multiplexer Single 8:1 Automotive AEC-Q100 16-Pin SO N T/R | Buy | |
|
TS3431AILT | STMicroelectronics | Voltage References | V-Ref Adjustable 1.24V to 24V 100mA 3-Pin SOT-23 T/R | Buy | |