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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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L6713ATR 数据表(PDF) 46 Page - STMicroelectronics |
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L6713ATR 数据表(HTML) 46 Page - STMicroelectronics |
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46 / 64 page  Soft-start L6713A 46/64 16.3 Low-side-less startup In order to avoid any kind of negative undershoot on the load side during start-up, L6713A performs a special sequence in enabling LS driver to switch: during the soft-start phase, the LS driver results disabled (LS = OFF) until the HS starts to switch. This avoid the dangerous negative spike on the output voltage that can happen if starting over a pre-biased output (See Figure 21). This particular feature of the device masks the LS turn-ON only from the control loop point of view: protections are still allowed to turn-ON the LS MOSFET in case of over voltage if needed. Figure 21. Low-side-less start-up comparison |
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