LED-Lighting Control Reference Design for Machine Vision

1 января 2018

Texas Instrumentsопорное решениеинтегральные микросхемыоптоэлектроникадатчикидискретные полупроводникисредства разработки и материалы

This LED lighting control reference design demonstrates a unique approach to drive and control a string of multiple high-power light-emitting diodes (LEDs). This reference design is targeted for industrial machine vision systems and is also suitable for other industrial or automotive lighting applications. The design allows users to program LED current and timing to enable the safe overdriving of LEDs for increased brightness. The design can operate autonomously but can also be triggered or generate a trigger through an isolated interface. Internal circuit blocks support a wide input voltage range, a programmable input current, and input power control as well as protect against reverse polarity, overvoltage and overtemperature.

Особенности

LED string voltage up to 24V Programmability of multiple parameters: LED current: 200 mA to 2.4 A LED mode: Continuous or pulsed 200 ns to 4.9 s LED pulse repetition: 0.2 Hz to 10 kHz Trigger delay time: 10 μs for trigger input Multi-pulse time, and current bracketing to support AEB and HDR imaging Cascaded dual power stages: Pre-Boost: Wide 8V to 36V, 15-W system input with adaptive inductor current limit Buck: Fast inductor current ramping Isolated trigger and UART interface: Isolated 5-V, 50-mA output Sinking NPN– and TTL trigger IN and OUT Comprehensive system supervision and protection: Onboard temperature sensors and voltage supervision Ultra-fast output overvoltage protection eFuse: Reverse protection, adaptive overcurrent limit, and input power limit EEPROM for up to 256 bits of user data

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Товары
Наименование
TIDA-01081 (TI)