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參數(shù)資料
| 型號： | BQ2083 |
| 英文描述： | Silicon Bridge Rectifiers |
| 中文描述： | 銀紫荊星章符合電量監(jiān)測計芯片的使用與BQ29311 |
| 文件頁數(shù)： | 14/54頁 |
| 文件大?。?/td> | 461K |
| 代理商： | BQ2083 |
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SLUS573 JULY 2003
www.ti.com
14
Midrange Capacity Corrections
The bq2083V1P2 applies midrange capacity corrections when the VCOR bit is set in
Gauge Configuration
DF 0x29.
The bq2083V1P2 adjusts RM to the associated percentage at three different voltage levels: VOC25, VOC50, and
VOC75
.
The VOC values represent the open circuit battery voltage at which RM corresponds to the associated for
each threshold.
For the midrange corrections to occur, the temperature must be in the range of 19
°
C to 31
°
C inclusive and the
Current( ) and AverageCurrent( ) must both be between 64 mA and 0. The bq2083V1P2 makes midrange
corrections as shown in Table 5. For a correction to occur, the bq2083V1P2 must detect the need for correction twice
during subsequent 20-s intervals. With the VCOR bit set, the bq2083V1P2 makes midrange corrections whenever
conditions permit. If the OTVC bit in
Gauge Configuration
DF 0x29 is set and VCOR = 0, the bq2083V1P2 makes
a single attempt of mid-range correction immediately after device reset and does not require a second validation.
Table 5. Midrange Corrections
CONDITION
RESULT
Voltage()
≥
VOC75 and RelativeStateOfCharge( )
≤
63%
< VOC75 and RelativeStateOfCharge( )
≥
87%
≥
VOC50 and RelativeStateOfCharge( )
≤
38%
<VOC50 and RelativeStateOfCharge( )
≥
62%
≥
VOC25 and RelativeStateOfCharge( )
≤
13%
< VOC25 and RelativeStateOfCharge( )
≥
37%
RelativeStateOfCharge()
→
75%
RelativeStateOfCharge()
→
75%
RelativeStateOfCharge()
→
50%
RelativeStateOfCharge()
→
50%
RelativeStateOfCharge()
→
25%
RelativeStateOfCharge()
→
25%
Charge Control
Charging Voltage and Current Broadcasts
The bq2083V1P2 supports SBS charge control by broadcasting the ChargingCurrent( ) and ChargingVoltage( ) to
the Smart Charger address. The bq2083V1P2 broadcasts the requests every 10 seconds. The bq2083V1P2
updates the values used in the charging current and voltage broadcasts based on the battery’s state of charge,
voltage, and temperature. The charge voltage is programmed in
Charging Voltage
DF 0x039-0x3a. The charge
current may take any of four different values: Fast Charging Current DF (0x3d–0x3c), Maintenance Charging Current
(DF 0x3f), Precharge Current (0x41), or 0. The charge current depends on charge state and operating conditions.
The bq2083V1P2 internal charge control is compatible with the constant current/constant voltage profile for Li-Ion.
The bq2083V1P2 detects primary charge termination on the basis of the tapering charge current during the
constant-voltage phase.
Alarm Broadcasts to Smart Charger and Host
If any of the bits 815 in BatteryStatus( ) are set, the bq2083V1P2 broadcasts an AlarmWarning( ) message to the
Host address. If any of the bits 1215 in BatteryStatus( ) are set, the bq2083V1P2 also sends an AlarmWarning( )
message to the Smart Charger address. The bq2083V1P2 repeats the AlarmWarning( ) messages every 10
seconds until the alarm bits are cleared.
Precharge Qualification
The bq2083V1P2 sets ChargingCurrent( ) to the precharge rate as programmed in
Precharge Current
DF 0x41
under the following conditions:
Voltage: The bq2083V1P2 requests the precharge charge rate when Voltage( ) drops below the precharge
threshold or when the EDV0 threshold is detected. Once requested, a precharge rate remains until Voltage( )
increases above the precharge threshold and the EDV0 condition does not exist. The precharge threshold is
programmed in
Precharge Voltage
DF 0x3b0x3c.
Temperature: The bq2083V1P2 requests the precharge rate when Temperature( ) is between 0
°
C and the
precharge threshold programmed in
Precharge Temp
0x43. Temperature( ) must be 3
°
C higher than
Precharge
Temp
to allow the fast-charge rate.
NOTE:
If Current() falls below the mA value programmed in Charge Detect Current (DF 0xe9, 0xea) then the pre-charge FET
(if enabled) is turned off to reduce power consumption.
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| BQ20832DBT | 制造商:Texas Instruments 功能描述: |
| BQ20832DBTR | 制造商:Texas Instruments 功能描述: |
| BQ2083DBT | 功能描述:電池管理 SBS-Cmplnt Gas Gauge for Use w/BQ29311 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| BQ2083DBTG4 | 功能描述:電池管理 SBS-Cmplnt Gas Gauge for Use w/BQ29311 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| BQ2083DBTR | 功能描述:電池管理 SBS-Cmplnt Gas Gauge for Use w/BQ29311 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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