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Tendências e aplicaçõesem sistemas de iluminação

com LEDs

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A World Of Applications

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Iluminação Automotiva

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Iluminação Interior

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Avisos & Displays

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Hospitalar

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Iluminação Exterior

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Segurança

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O LED – Uma Breve História

Em 1907 Henry Joseph Round viu uma iluminação amareladaemanar de um diodo de carbeto de silício. e.

Henry Round concluiu que o fenômeno era um produto quenão merecia atenção.

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O LED – Uma Breve História

• 1950-1960s• Os primeiros LEDs de Arsenieto de Gálio (GaAs) são produzidos• Infra-vermelhos (905nm)

• 1970s• LEDs de Arsenieto de Gálio e Fosfato (GaAsP) são

desenvolvidos• Nasce o LED padrão Vermelho (660nm) 5mm 20mA

• 1980s• LEDs de Arsenieto de Gálio e Alumínio (GaAlAs) são

introduzidos• Performance superior• Brilho 10X

• 1990s• Shuji Nakamura desenvolve o LED AZUL• Nitreto de Gálio e Índio (InGaN)• Mais tarde LEDs BRANCOS são feitos adicionando-se um ponto

de fósforo amarelo sobre a superfície emissora de luz

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A Construção do LED

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A Construção do LED

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A Física do LED

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Instensidade Luminosa

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Intensidade Luminosa

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Topologia de Acionamento dos LEDs

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Teste de LEDs

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Carga do LED

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Topologias – Básica

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Topologias – Linear

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Topologias – Charge Pump

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Topologias – Step Down

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Topologias – Step Up

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Topologias – Up/Down

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Topologias – Flyback

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Topologias – SEPIC

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Cores

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LED

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Cores

Aditiva Subtrativa

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RGB LEDs – OVSRRGBCC3

Perspectiva Frente

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RGB LEDs – Especificações

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RGB LEDs – Especificações

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Topologia – RGB

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LEDs de Alta Potência

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Phlatlights

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Phlatlight – Especificações

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RGB LEDs – Especificações

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RGB LEDs – Especificações

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Demos

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MCP1252 Demo

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MCP1252 Demo - Esquemático

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MCP1252 Demo - Esquemático

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MCP1630 Boost Mode Demo

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MCP1630 Demo - Schematic

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X42180 Dados

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MCP1650 SEPIC Demo

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MCP1650 – Esquemático Demo

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