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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： | 74/97页 |
| 文件大小： | 937K |
| 代理商： | PWL6030B1AACMR |
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SWCS045-019
32.768-kHz crystal clock
ADP interrupt
ADP_MODE[1:0]
00
10/11
EnaComp
VBUS_IADP_SINK
VBUS_IADP_SRC
Comp (VADP_PRB)
T_ADP_SINK
T_ADP_RISE
Asynchronous
T_ADP_SINK
TA_ADP_PRB or TB_ADP_PRB
00
10/11
>T_ADP_HIGH or 255*Tclk
SWCS045B
– SEPTEMBER 2010 – REVISED JUNE 2011
Figure 20. ADP Probing Timing Diagram
GAS GAUGE
The gas gauge, also called the current gauge, measures the current from the battery or the current into the
battery. An analog-to-digital converter (ADC) (Coulomb counter) is required to measure the voltage over the
external Rsense sense resistor. This resistor is connected to the negative side of the battery. The integration
period of the ADC is programmable from 3.9 to 250 ms. The gas gauge works continuously, which means that
the new measurement starts immediately after the previous result becomes available. The averaging and the
compensation are done by the TWL6030 digital module but requires software controls.
The main features of the gas gauge are:
Current range:
±6.2A (with 10-mΩ sense resistor)
ADC clock frequency: 32.768 kHz
Data size: 13 result bits + 1 sign bit, 2
’s complement format (with 250-ms integration period)
Integration periods: 250 ms (default), 62.5 ms, 15.6 ms, 3.9 ms
Battery discharging gives negative result (sign bit = 1)
External sense resistor is needed (will be connected the negative side of battery)
Figure 21 shows a block diagram of the gas gauge.
76
Copyright
2010–2011, Texas Instruments Incorporated
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