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参数资料
| 型号： | TSM101ACPT |
| 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： | 12/15页 |
| 文件大小： | 117K |
| 代理商： | TSM101ACPT |
The optocoupler current increases and tends to
reduce the output voltage by the way of the PWM
controller.
By enabling the TSM101 current source (pin 2) it is
possible to offset the current sensing by a voltage
equal to :
Voff # R4 * Io with Io = 1.4mA
This offset lowers the output charge current and
this function can be used to charge two types of
batteries having different capacities. The current
source is enabled by connecting pin 2 to ground
3 - CALCULATION OF THE ELEMENTS
The charge current is regulated at 700mA (if the
charge control input is left open) or 200mA (if the
charge control input is put to ground ), allowing the
charge of two different types of batteries.
3.1 - Voltage limitation
The end-of- charge voltage is limited at 1.45V/cell,
this is the recommended voltage for an ambient
temperature at 25
oC.
A diode is generally inserted at the output of the
charger to avoid the discharge of the battery if the
charger is not powered. This diode is sometimes
directly integrated in the battery pack. The influ-
ence of this diode on the charge is negligible if the
voltage drop (0.7V) is taken into account during the
design of the charger.
The voltage at the output of the charger is :
Vout =
R6
+R7
R6
xVr
and regarding R6 and R7 :
R6 =(
Vref
Vout Vref
) xR7
P1, which is a part of R6 and R7 is not considered
in this equation.
The following values are used on the application
board :
R7 = 12k
R6 = 1k
P1 = 220, adjust for Voutput = 15.2V with the
battery replaced by a 1k
resistor
R10 = short circuit
C3 = 100nF
3.2 - Current regulation
R5 is the sense resistor used for current measure-
ment.
Figure 2 : SMPS Using a TL431 as Voltage Controller
TSM101/A
6/15
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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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