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The Great Search: High Voltage / High Current / Low Vf Diodes

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Manage episode 453634356 series 1242341
内容由Adafruit Industries提供。所有播客内容(包括剧集、图形和播客描述)均由 Adafruit Industries 或其播客平台合作伙伴直接上传和提供。如果您认为有人在未经您许可的情况下使用您的受版权保护的作品,您可以按照此处概述的流程进行操作https://zh.player.fm/legal
In our WLED design, we want to have two (or maybe three?) DC power inputs, where each can be up to 24V, and supply up to 5A of current into the LED strands. In our typical designs, like the Metro or Feather series, we don't really go above 1A or 2A and 20V. Let's take a look at what is available: we want to have the lowest possible forward drop because, at 5V, we want to have no less than 4.5V going into the LEDs, but we also want to minimize the reverse current which can start to get non-trivial at these capacities. Also, should we go with an 'ideal' diode chip or with a Schottky diode? See the chosen part on DigiKey https://www.digikey.com/short/zq72b5bq ----------------------------------------- Visit the Adafruit shop online - http://www.adafruit.com LIVE CHAT IS HERE! http://adafru.it/discord Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/
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Artwork
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Manage episode 453634356 series 1242341
内容由Adafruit Industries提供。所有播客内容(包括剧集、图形和播客描述)均由 Adafruit Industries 或其播客平台合作伙伴直接上传和提供。如果您认为有人在未经您许可的情况下使用您的受版权保护的作品,您可以按照此处概述的流程进行操作https://zh.player.fm/legal
In our WLED design, we want to have two (or maybe three?) DC power inputs, where each can be up to 24V, and supply up to 5A of current into the LED strands. In our typical designs, like the Metro or Feather series, we don't really go above 1A or 2A and 20V. Let's take a look at what is available: we want to have the lowest possible forward drop because, at 5V, we want to have no less than 4.5V going into the LEDs, but we also want to minimize the reverse current which can start to get non-trivial at these capacities. Also, should we go with an 'ideal' diode chip or with a Schottky diode? See the chosen part on DigiKey https://www.digikey.com/short/zq72b5bq ----------------------------------------- Visit the Adafruit shop online - http://www.adafruit.com LIVE CHAT IS HERE! http://adafru.it/discord Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/
  continue reading

4748集单集

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