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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： | 14/15页 |
| 文件大小： | 117K |
| 代理商： | TSM101ACPT |
Figure 4 : An Auxiliary Winding for TSM101 Power Supply
5 - IMPROVEMENT
5.1. High frequency compensation
Two R-C devices (R9 + C2 & R10 + C3) are used
to stabilize the regulation at high frequencies.
The calculation of these values is not easy and is
a function of the transfer function of the SMPS.
A guess value for the capacitors C2 and C3 is
100nF.
5.2. Power supply for TSM101
In applications requiring low voltage battery charge
or when the charger is in current regulation mode,
the outputvoltage can be too low to supply correctly
the TSM101.
The same problem occurs when the output is short-
circuited.
A solution to provide a quasi constant supply volt-
age to the TSM101 is shown at figure 4 : an auxiliary
winding is added at the secondary side of the
transformer.
This winding is forward coupled to the primary
winding, the voltage across it is directly proportional
to the mains rectified voltage, even if the flyback
voltage is close to zero.
As this auxiliary winding is a voltage source, it is
necessary to add a resistor (R11) on the cathode
of the rectifier (D3) to limit the current.
A low cost regulator (Q2 and Zener diode D4) is
used to power the TSM101. This is necessary with
autoranging SMPS with wide input voltages, for
example 90 to 240V without switching. In standard
SMPS with voltage range from 200 to 240VAC or
100 to 130VAC, this regulator can be removed and
replaced by the small power supply shown on
figure 5 (Raux, Caux, D2).
TSM101/A
8/15
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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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