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参数资料
| 型号： | TSM101ACP |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| 封装： | TSSOP-8 |
| 文件页数： | 15/15页 |
| 文件大小： | 117K |
| 代理商： | TSM101ACP |
Figure 5 : Precise Output Voltage Control
5.3. Higher Precision for the Voltage Control
The voltage drop through the sense resistor R5
offsets the voltage measurement. In most battery
charging applications, this offset is not taken into
account because the error is negligeable com-
pared to the end-of-charge voltage due to the fact
that the charging current value decreases drasti-
cally during the final phase of the battery charging.
But in other applications needing highest possible
precision in voltage control, another connecting
schematic is possible for TSM101 as shown on
figure 5.
In this schematic, the 0V reference is defined as
the common point between the sense resistor, the
0V Output Voltage, the foot of the resistor bridge
R6/R7, and the ground (pin 4) of the TSM101.
TSM101A(1% internal voltage reference precision)
is required in such applications.
5.4. An example of application where the
charging current is different according to the
charging phase.
The following application includes a specific recom-
mendation which requires that the charging current
should be fixed to Ich1 = 800mAin normal charging
conditions, and Ich2 = 200mA when the cell volt-
age 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 second
(C2) is used to switch the status LED off. On figure
6, the status signal is determined by voltage meas-
urement, 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
TSM101/A
9/15
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TSM101AD | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| TSM101AI | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:VOLTAGE AND CURRENT CONTROLLER |
| TSM101AID | 功能描述:DC/DC 开关控制器 Voltage/Current Cont RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TSM101AIDT | 功能描述:DC/DC 开关控制器 Voltage/Current Cont RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TSM101AIN | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Power Control/Management |
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