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参数资料
| 型号： | TSM101IN |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDIP8 |
| 封装： | PLASTIC, DIP-8 |
| 文件页数： | 13/13页 |
| 文件大小： | 387K |
| 代理商： | TSM101IN |
TSM101/A
9/13
5.4. An example of application where the
charging current is different according to the
charging phase.
The following application includes a specific rec-
ommendation which requires that the charging
current should be fixed to Ich1 = 800mA in normal
charging conditions, and Ich2 = 200mA when the
cell voltage is below Vl=2.5V to optimize the cell
life-time.
Moreover, an Charging Status LED should be
switched off when the cell voltage is above
Vh=6.5V.
Figure 6 shows how this can easily be achieved
using an additional dual comparator (type LM393)
where the first operator (C1) is used to activate the
TSM101 internal current generator to offset the
current measurement thanks to R4, and the sec-
ond (C2) is used to switch the status LED off. On
figure 6, the status signal is determined by voltage
measurement, this could as well be achieved by
current measurement.
If V5 = 100mV is the maximum tolerable voltage
drop through the sense resistor R5 during normal
charging conditions, then the following calcula-
tions apply :
Current Control :
R5 = V5 / Ich1 = 0.1 / 0.8 = 0.125
R5 = 125m
V5 = Vref x R3 / (R2 + R3) with R2 + R3 ~ 12k
and Vref = 1.24V
R3 = 1k
, R2 = 11.4k
V5 = R4 x Io + R5 x Ich2, therefore, R4 = (V5 - R5
x Ich2) / Io with Io = 1.4mA
R4 = 53.6
Vref = Vl x R15 / (R14 + R15) with Vl = 2.5V and
R14 + R15 ~ 20k
R15 = R14 = 10k
Voltage Control :
Vref = Vh x R6 / (R6 + R7) with Vh = 6.5V and
R6 + R7 ~ 12kW
R6 = 2.36kW, R7 = 10kW
Vref = Vh R17 / (R16 + R17)
R17 = 10kW, R16 = 42kW
Voltage Control :
Vref = Vh x R6 / (R6 + R7) with Vh = 6.5V and
R6 + R7 ~ 12kW
R6 = 2.36kW, R7 = 10kW
Vref = Vh R17 / (R16 + R17)
R17 = 10kW, R16 = 42kW
Figure 6 : Optimized Charging Conditions
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TSM101IP | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| TSM101N | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:VOLTAGE AND CURRENT CONTROLLER |
| TSM101P | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:VOLTAGE AND CURRENT CONTROLLER |
| TSM101电池充电电路 | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
| TSM102 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:VOLTAGE AND CURRENT CONTROLLER |
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