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SWCS049E 数据表(PDF) 64 Page - Texas Instruments

部件名 SWCS049E
功能描述  TPS65911 Integrated Power Management Unit Top Specification
PDF  144 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

SWCS049E 数据表(HTML) 64 Page - Texas Instruments

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SWCS049-023
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TPS65911
SWCS049S – JUNE 2010 – REVISED AUGUST 2018
www.ti.com
Submit Documentation Feedback
Product Folder Links: TPS65911
Detailed Description
Copyright © 2010–2018, Texas Instruments Incorporated
Figure 6-9. I2C Write Access Multiple Bytes
Figure 6-10. I2C Read Access Multiple Bytes
6.13 Thermal Monitoring and Shutdown
A thermal protection module monitors the junction temperature of the device versus two thresholds:
•
Hot-die temperature threshold
•
Thermal shutdown temperature threshold
When the hot-die temperature threshold is reached, an interrupt is sent to software to close the noncritical
running tasks.
When the thermal shutdown temperature threshold is reached, the TPS65911 device is set under reset
and a transition to OFF state is initiated. Then the POWER ON enable conditions of the device are not
considered until the die temperature has decreased below the hot-die threshold. Hysteresis is applied to
the hot-die and shutdown thresholds, when detecting a falling edge of temperature, and both detections
are debounced to avoid any parasitic detection.
The TPS65911 device allows programming of four hot-die temperature thresholds to increase the flexibility
of the system.
By default, the thermal protection is enabled in ACTIVE state, but can be disabled through programming
the THERM_REG register. The thermal protection can be enabled in SLEEP state programming the
SLEEP_KEEP_RES_ON register. The thermal protection is automatically enabled during an OFF-to-
ACTIVE state transition and is kept enabled in OFF state after a switch-off sequence caused by a thermal
shutdown event. Transition to OFF state sequence caused by a thermal shutdown event is highlighted in
the INT_STS_REG status register. Recovery from this OFF state is initiated (switch-on sequence) when
the die temperature falls below the hot-die temperature threshold.
Hot-die and thermal shutdown temperature threshold detection states can be monitored or masked by
reading or programming the THERM_REG register. The hot-die interrupt can be masked by programming
the INT_MSK_REG register.
6.14 Interrupts
Table 6-5 lists the interrupt sources.
Table 6-5. Interrupt Sources
INTERRUPT
DESCRIPTION
RTC_ALARM_IT
RTC alarm event: Occurs at programmed determinate date and time
(running in ACTIVE, OFF, and SLEEP state, default inactive)
RTC_PERIOD_IT
RTC periodic event: Occurs at programmed regular period of time (each second or minute)
(running in ACTIVE, OFF, and SLEEP state, default inactive)



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