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参数资料
| 型号： | PWL6030B1AACMR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA187 |
| 封装： | 7 X 7 MM, 0.40 MM PITCH, GREEN, FCBGA-187 |
| 文件页数： | 81/97页 |
| 文件大小： | 937K |
| 代理商： | PWL6030B1AACMR |
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SWCS045B
– SEPTEMBER 2010 – REVISED JUNE 2011
configuration. When a card insertion is detected, the regulator VUSIM or VMMC must be enabled by software.
When a card is extracted, the corresponding regulator is turned off automatically. This functionality is still
configurable (enabled or disabled) by software. The SIM or MMC card plug is detected from any state of the chip
(WAIT-ON, SLEEP, or ACTIVE). Both card detections are always enabled and their respective interrupt can be
masked or unmasked.
Battery Removal Detection
The TWL6030 device provides the means to detect the presence or removal of the battery. The presence of the
battery is detected by a comparator associated with a current source connected to the GPADC_IN0 by sensing
the voltage on this ball (resistor to ground or open circuit R
> 130 kΩ). The BATREMOVAL signal is activated
when the presence or removal of the battery is detected. Debouncing occurs on the battery detection circuitry.
This debouncing can be bypassed by a register bit (the default value is bypass). Battery detection circuitry can
be enabled or disabled by a register bit. The battery detection (default configuration) can be combined with the
SIM detection. Depending on the state of 2 register bits, the BATREMOVAL ball indicates the presence of the
battery only, the presence of SIM only, or the presence of both SIM and battery. By default, the 2 register bits are
set to indicate the battery presence only.
The polarity is defined as following:
High level: Battery and/or SIM present
Low level: Battery and/or SIM removed
THERMAL MONITORING
A thermal protection module monitors the temperature of the device. It generates a warning to the system when
excessive power dissipation occurs and shuts down the TWL6030 device if the temperature rises to a value at
which damage can occur.
Thus, there are two protection levels:
Hot-die (HD) function, which sends an interrupt to software to close the noncritical running tasks
Thermal shutdown (TS) function, which directly starts the TWL6030 device switch-off
The silicon technology used to build the TWL6030 device supports a maximum operating temperature of 150
°C.
Regarding packaging technology, a continuous operation above 125
°C would require special packaging and
must be avoided to meet 100k hours lifetime.
By default, thermal protection is always enabled except in BACKUP or OFF state. It is not possible to disable it
by software in the SLEEP state.
The TWL6030 device integrates two hardware detection mechanisms to monitor and alert software that the
junction temperature is rising and must take action to reduce consumption. Those mechanisms are placed on
two opposite sides of the chip and close to the LDOs and SMPSs. Even if there are two identical thermal feature
instances on the chip, it is always considered by the specification to be unique. In addition to those HD
detections, another HD feature is embedded in the charger: The charger HD is specified in BATTERY
CHARGING and does not behave exactly the same way as described in Hot-Die Function.
Different thresholds are implemented. When a threshold is reached, an interrupt is issued. To avoid parasitic
interrupt, debouncing is implemented within the HD detection function.
The TWL6030 device integrates a thermal shutdown mechanism to shut down the device when the junction
temperature reaches a certain level to avoid irreversible die damage. The rising and falling temperature
thresholds have a difference of 10
°C minimum. The HD provides some interrupt mechanism and threshold
registers to select the temperature interrupt level.
Hot-Die Function
The HD detector monitors the temperature of the die and provides a warning to the host processor through the
interrupt system when temperature reaches a critical value. The threshold value must be set below the thermal
shutdown threshold. Hysteresis is added to the HD detection to avoid the generation of multiple interrupts.
The integrated HD function provides an early warning overtemperature condition to the host PM software. This
monitoring system is connected to the interrupt controller (INTC) and can send an interrupt when the temperature
is higher than the programmed threshold.
82
Copyright
2010–2011, Texas Instruments Incorporated
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