Multiple Channels of High Density LED Control for Automotive Headlight Applications
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Description
This design, featuring the TMS320F2803x Piccolo microcontroller, implements a high efficiency multi-channel DC-DC LED control system for typically automotive lighting systems. The design support up to 6 channels of LED controls each with maximum of 1.2A current driving capabilities. With a two stage power topology of boost and buck, the system can be operated with a wide input DC voltage from 8V to 20V, which fits perfectly in automotive applications.
Features
- Up to 6 channels of high density DC-DC LED driving capability
- High overall efficiency of about 86% at stable maximum output
- Wide input operation voltage range from 8V to 20V
- Very low ripple current on each LED channel with +/- 1mA at constant output
- Controlled and monitored via CAN communication interface with pre-defined open protocol. Easy to adapt to various end users.
- Over voltage and over current protection. 45V load dump protection
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Schematic/Block Diagram
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Design Guide
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TI Devices (8)
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| Sample & Buy |
Design Kits & Evaluation Modules |
| LM5111 |
Dual 5A Compound Gate Driver |
Gate drivers |
Sample & Buy |
View Design Kits & Evaluation Modules |
| OPA4322 |
20MHz, Low Noise, 1.8V, RRIO, CMOS Operational Amplifier |
Operational amplifiers (op amps) |
Sample & Buy |
View Design Kits & Evaluation Modules |
| SN65HVDA541-Q1 |
Automotive Catalog 5-V CAN Transceiver with Standby mode, I/O Level Shifting and Supply Optimization |
Interface |
Sample & Buy |
View Design Kits & Evaluation Modules |
| TL431 |
Adjustable precision shunt regulator |
Voltage references |
Sample & Buy |
Not Available |
| TMS320F28032 |
Piccolo™ 32-bit MCU with 60 MHz, 64 KB Flash |
C2000 real-time control MCUs |
Sample & Buy |
View Design Kits & Evaluation Modules |
| TPIC1021 |
Automotive Catalog LIN Physical Interface |
Interface |
Not Available |
Not Available |
| UCC27201 |
120V Boot, 3-A Peak, High Frequency, High-Side/Low-Side Driver |
Gate drivers |
Sample & Buy |
View Design Kits & Evaluation Modules |
| UCC2813-3-Q1 |
Automotive 3.6V to 12V, 1A BiCMOS Current Mode PWM Controller |
Offline & isolated DC/DC controllers & converters |
Sample & Buy |
Not Available |
CAD/CAE symbols
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Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Step 3: Open the .bxl file with the Ultra Librarian software.
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Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a (free download.).
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Technical Documents
View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.
User guides (1)
| Title | Abstract | Type | Size (KB) | Date |
| | | PDF | 3763 |
12 Jan 2015
|
Design files (3)
| | | ZIP | 260 |
15 Jan 2015
|
| | | PDF | 77 |
15 Jan 2015
|
| | | PDF | 2826 |
15 Jan 2015
|
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