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| 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： | 61/97页 |
| 文件大小： | 937K |
| 代理商： | PWL6030B1AACMR |
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SWCS045B
– SEPTEMBER 2010 – REVISED JUNE 2011
Table 15. Simplified State Transitions During Charging (continued)
PRECONDITIONING
FULL CHARGE
REGISTE
OR PRECHARGE
COMMENTS
NRESPWRON = 1
R RESET
NRESPWRON = 0
BIT/SIGNAL
REASON
WD
INT
WD
INT
PARAMETER
VBUS
VICHRG [3:0]
Watchdog in software
current/voltage
or VOREG
N/A
Continued
Run
No
None
mode. Software takes
setting change
[5:0]
control over charging.
Enable charging
EN_CHARGE
Charging
N/A
WDT[6:0]
No
None
by software
R = 1
enabled
Disable
EN_CHARGE
Charge
charging by
N/A
Terminated
No
R = 0
group
software
Anticollapse Loop
The analog anticollapse loop operates so that the input voltage is monitored continuously and the charging
current is set by analog loop to maintain the defined input voltage.
Battery Temperature Measurement
The battery temperature is measured using an external NTC resistor. The measurement is enabled before the
charging starts and the temperature is constantly monitored during charging. If the battery temperature is outside
the valid range, the charging is gated; if the temperature returns inside the valid range, the charging continues. If
a battery dies, the battery temperature is monitored so that the charging does not start if the temperature is
outside the valid range. The gating of the charging can be disabled with an EPROM bit if needed.
The module is enabled if VBUS or an external charger is detected. An interrupt is always generated when the
battery temperature crosses the temperature limits in both directions. The interrupt generation can be masked if
needed.
Figure 13 shows the battery temperature measurement circuitry.
64
Copyright
2010–2011, Texas Instruments Incorporated
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