Datasheet
SWCS049-023
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TPS659110, TPS659112, TPS659113, TPS659116
SWCS049L –JUNE 2010–REVISED MARCH 2014
www.ti.com
I
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C Interface (continued)
Figure 21. I
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C Read Access Multiple Bytes
8.11 Thermal Monitoring And Shutdown
A thermal protection module monitors the junction temperature of the device versus two thesholds:
• 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.
8.12 Interrupts
Table 14. Interrupt Sources
Interrupt Description
RTC alarm event: Occurs at programmed determinate date and time
RTC_ALARM_IT
(running in ACTIVE, OFF, and SLEEP state, default inactive)
RTC periodic event: Occurs at programmed regular period of time (every second or minute)
RTC_PERIOD_IT
(running in ACTIVE, OFF, and SLEEP state, default inactive)
The embedded thermal monitoring module has detected a die temperature above the hot-die
detection threshold (running in ACTIVE and SLEEP state).
HOT_DIE_IT
Level sensitive interrupt.
PWRHOLD_R_IT PWRHOLD signal rising edge
PWRHOLD_F_IT PWRHOLD signal falling-edge
PWRON is low during more than the long-press delay: PWON_TO_OFF_DELAY (can be
PWRON_LP_IT
disable though register programming).
PWRON is low while the device is on (running in ACTIVE and SLEEP state). Level-sensitive
PWRON_IT
interrupt.
The battery voltage rise above the VMBHI threshold: NO SUPPLY-to-OFF or BACKUP-to-
VMBHI_IT
OFF device states transition (first battery plug or battery voltage bounce detection)
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Product Folder Links: TPS659110 TPS659112 TPS659113 TPS659116