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TPL5110DDCT 데이터시트(PDF) 10 Page - Texas Instruments |
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TPL5110DDCT 데이터시트(HTML) 10 Page - Texas Instruments |
10 / 26 page DRV DONE EN/ ONE_SHOT DELAY/ M_DRV ttM_DRVt ttDBt ttM_DRVt NOT VALID M_DRV VALID M_DRV ttIPt ttM_DRVt IGNORED M_DRV DRV ALREADY LOW ttIPt DRV DONE EN/ ONE_SHOT DELAY/ M_DRV POR RESISTANCE READING ttIPt ttDRVt MISSED DONE FORCED DRV RISING 10 TPL5110 SNAS650 – JANUARY 2015 – REVISED JANUARY 2015 www.ti.com Product Folder Links: TPL5110 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated Device Functional Modes (continued) Figure 10. Startup One Shot Mode, (no DONE received within tIP) 8.5 Programming 8.5.1 Configuring the Time Interval with the DELAY/M_DRV Pin The time interval between 2 adjacent DRV pulses (falling edges, in timer mode) is selectable through an external resistance (REXT) between the DELAY/M_DRV pin and ground. The resistance (REXT) must be in the range between 500 Ω and 170kΩ. At least a 1% precision resistance is recommended. See section Selection of the External Resistance on how to set the time interval using REXT. 8.5.2 Manual MOSFET Power ON Applied to the DELAY/M_DRV Pin If VDD is connected to the DELAY/M_DRV pin, the TPL5110 recognizes this as a manual MOSFET Power ON condition. In this case the time interval is not set. If the manual MOSFET Power ON is asserted during the POR or during the reading procedure, the reading procedure is aborted and is re-started as soon as the manual MOSFET Power ON switch is released. A pulse on the DELAY/M_DRV pin is recognized as a valid manual MOSFET Power ON only if it lasts at least 20ms (observation time is 30ms). The manual MOSFET Power ON may be implemented using a switch (momentary mechanical action). If the DRV is already LOW (MOSFET ON) the manual MOSFET Power ON is ignored. Figure 11. Manual MOSFET Power ON in Timer Mode |
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