TI SM74611KTTR

标准30 V15A

Overview

The SM74611KTTR is a smart Bypass Diode used in photovoltaic applications. It serves the purpose of providing an alternate path for string current when parts of the panel are shaded during normal operation. Without bypass diodes, the shaded cells will exhibit a hot spot which is caused by excessive power dissipation in the reverse biased cells. Currently, conventional P-N junction diodes or Schottky diodes are used to mitigate this issue. Unfortunately the forward voltage drop for these diodes is still considered high (0.6V for normal diodes and 0.4V for Schottky). With 10A of currents flowing through these diodes, the power dissipation can reach as high as 6W. This in turn will raise the temperature inside the junction box where these diodes normally reside and reduce module reliability. The advantage of the SM74611KTTR is that it has a lower forward voltage drop than PN junction and schottky diodes. It has a typical average forward voltage drop of 26mV at 8A of current.

Features

Tape & Reel (TR) Package
an average rectified current of 15A volts
the least amount of 575mW heat (energy loss)
the peak reverse is 300nA

Surface Mount Mounting Type

Applications

There are a lot of Texas Instruments
SM74611KTTR applications of single-phase diode rectifier.

• DC motor control and drives
• Battery chargers
• Welders
• Power converters
• Reverse Polarity Protection
• Ultra High-Speed Switching
• Freewheeling
• Polarity Protection Diode
• Recirculating Diode
• Switching Diode