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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： | 65/97页 |
| 文件大小： | 937K |
| 代理商： | PWL6030B1AACMR |
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SWCS045-015
VAC
VBAT
Control
Ichar FB
V
FB
Thermal FB
sense
Isense
Vsense
VAC
detector
+
OVV
detector
Thermal
protector
TWL6030
power IC
I
2C
CHRG_EXTCHRG_ENZ
VAC
detector
External charging IC
BQ24156
Charging
control and
watchdog
Battery
temp
BDET
Control
and
watchdog
Application
processor
INT
CHRG_EXTCHRG_STATZ
NRESPWRON
SWCS045B
– SEPTEMBER 2010 – REVISED JUNE 2011
Support for External Charging IC
The TWL6030 device can be interfaced with an auxiliary stand-alone charger device to support the following use
cases:
Simultaneous battery charge from a non-USB charger (different connector) and OTG operating mode (the
TWL6030 device internal USB charger used as VBUS supply)
Charging from the sources not connected to USB connector
Figure 15 shows an example of an external charging IC supported by the TWL6030 device.
Figure 15. External Charger Interface
The external charging IC is enabled with 1.8-V CMOS level signal, CHRG_EXTCHRG_ENZ. Low logic level
indicates that charging is enabled. Charging status is indicated with the CHRG_EXTCHRG_STATZ signal. The
external charging IC pulls the signal down during charging.
The integrated USB charger can be associated with an external VAC (wall) charger. For that reason, VAC wall
charger input is connected to the TWL6030 device to define the charge priorities:
When the VBUS is detected and the VAC is not detected, the USB charge starts.
When the VAC is detected and the VBUS is not detected, the external charging starts.
When the VBUS and VAC are detected, the USB charge starts only if the CHRG_DET_N pin is set high so
the USB charge has a 475-mA input current limitation.
– When CHRG_DET_N = 0 (100-mA input current USB limitation), the VAC wall charger is expected to be
better (or equivalent) and thus is chosen as the default charge path.
– When CHRG_DET_N = 1 (500-mA input current USB limitation), the precharge associated with a USB is
expected to be sufficient for battery-level quick recovery if the USB charge path is chosen.
If there is fault condition on a charger during hardware-controlled charging and the fault condition continues at
least 2.5 s, the charging source is changed for lower-priority charger. The change into lower-priority charger only
prevents the infinite looping between chargers. If only one charger is attached, the charger is not disabled in fault
condition and if the fault condition does not disappear, the charging is terminated when the watchdog expires.
USB OTG
The TWL6030 device supports the Battery Charging Specification Revision 1.1 and both OTG 1.3 and OTG 2.0
standards. The OTG revision number is hardware predefined by an EPROM bit.
68
Copyright
2010–2011, Texas Instruments Incorporated
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