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TPL5111 데이터시트(PDF) 10 Page - Texas Instruments |
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TPL5111 데이터시트(HTML) 10 Page - Texas Instruments |
10 / 25 page DRV DONE EN/ ONE_SHOT DELAY/ M_DRV ttM_DRVt ttDBt ttM_DRVt INVALID M_DRV TOO SHORT VALID M_DRV ttIPt ttM_DRVt M_DRV IGNORED DRVn HIGH ttIPt DRV DONE EN/ ONE_SHOT DELAY/ M_DRV POR RESISTANCE READING ttIPt tDRVn MISSED DONE FORCED DRVn FALLING TPL5111 SNAS659A – JUNE 2015 – REVISED JULY 2015 www.ti.com Device Functional Modes (continued) Figure 10. Startup One Shot Mode, (No DONE Received within tIP) 7.5 Programming 7.5.1 Configuring the Time Interval with the DELAY/M_DRV Pin The time interval between 2 adjacent DRVn pulses (rising 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 170 kΩ. At least a 1% precision resistance is recommended. See Selection of the External Resistance on how to set the time interval using REXT. During startup, the external resistance is read immediately after POR. 7.5.2 Manual Power ON Applied to the DELAY/M_DRV Pin If VDD is applied to the DELAY/M_DRV pin after startup is completed, the TPL5111 recognizes this as a manual Power ON condition. In this case REXT is not re-read. If the manual Power ON is asserted during the POR or during the REXT reading procedure, the reading procedure is aborted and is re-started as soon as the manual Power ON switch is released. A pulse on the DELAY/M_DRV pin is recognized as a valid manual Power ON only if it lasts at least 20ms (observation time is 30ms). If DRVn is already HIGH the manual Power ON is ignored. The manual Power ON may be implemented using a switch (momentary mechanical action). Figure 11. Manual Power ON in Timer Mode 10 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated Product Folder Links: TPL5111 |
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