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EV5424-R-00A 数据表(PDF) 28 Page - Monolithic Power Systems |
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EV5424-R-00A 数据表(HTML) 28 Page - Monolithic Power Systems |
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28 / 44 page  MP5424 – 5V POWER MANAGEMENT IC WITH I2C AND MTP MP5424 Rev. 1.0 MonolithicPower.com 28 12/6/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. Name Bits Default Description PWR_ON_ TIME_SLOT_ MODE D[1] 0 Selects the start-up sequence time slot mode. 0: The time slot is a fixed number set by TIME_SLOT 1: The time slot increases linearly, as shown below: • Time slot 0 to slot 3 has a TIME_SLOT x 1 interval • Time slot 3 to slot 7 has a TIME_SLOT x 2 interval • Time slot 7 to slot 11 has a TIME_SLOT x 4 interval • Time slot 11 to slot 15 has a TIME_SLOT x 8 interval Time Slot Number 1 0.5ms 0 0.5ms 0.5ms 3 4 1ms 5 1ms 6 7 1ms 1ms 2ms 8 2ms 9 2ms 10 2ms 4ms 4ms 4ms 2 11 12 13 14 15 VOUT TIME_ SLOTx1 TIME_ SLOTx1 TIME_ SLOTx1 TIME_ SLOTx2 TIME_ SLOTx2 TIME_ SLOTx2 TIME_ SLOTx2 TIME_ SLOTx4 TIME_ SLOTx4 TIME_ SLOTx4 TIME_ SLOTx4 TIME_ SLOTx8 TIME_ SLOTx8 TIME_ SLOTx8 TIME_ SLOTx8 Example: 4ms In a standard application, the start-up sequence ends at the maximum time slot of enabled channels. For example, if time slot 7 is the maximum slot number of the enabled channels (i.e. slot numbers above 7 are not used) during the start-up sequence, then the counter only works until time slot 7. The start-up sequence is complete, and the higher time slots are not executed. PWR_OFF_ TIME_SLOT_ MODE D[0] 0 Selects the shutdown sequence time slot mode. 0: The time slot is a fixed number set by TIME_SLOT 1: The time slot increases linearly, as shown below: • Time slot 0 to slot 3 has a TIME_SLOT x 1 interval • Time slot 3 to slot 7 has a TIME_SLOT x 2 interval • Time slot 7 to slot 11 has a TIME_SLOT x 4 interval • Time slot 11 to slot 15 has a TIME_SLOT x 8 interval Time Slot Number 0.5ms 0.5ms 0.5ms 1ms 1ms 1ms 1ms 2ms 8 2ms 9 2ms 10 2ms 4ms 4ms 4ms 2 11 12 13 14 15 VOUT TIME_ SLOTx1 TIME_ SLOTx1 TIME_ SLOTx1 TIME_ SLOTx2 TIME_ SLOTx2 TIME_ SLOTx2 TIME_ SLOTx2 TIME_ SLOTx4 TIME_ SLOTx4 TIME_ SLOTx4 TIME_ SLOTx4 TIME_ SLOTx8 TIME_ SLOTx8 TIME_ SLOTx8 TIME_ SLOTx8 Example: 1 0 3 4 5 6 7 4ms If the EN_OFF_DELAY is disabled, then the shutdown sequence begins at the maximum time slot of the enabled channels. For example, if time slot 7 is the maximum slot number of the enabled channels (i.e. slot numbers above 7 are not used) during the shutdown sequence, then the counter only works from time slot 7 to time slot 0. The shutdown sequence is complete, and the higher time slots are not executed. If the EN_OFF_DELAY is enabled, then the shutdown sequence starts from the 60th time interval, and the power rail turns off once the time interval decreases to the power rail’s time slot. The shutdown delay of each power rail is determined by the TIME_SLOT, PWR_OFF_TIME_SLOT_MODE and the time slot number. |
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