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参数资料
| 型号： | TSM1051CD |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封装： | LEAD FREE, SOP-8 |
| 文件页数： | 15/15页 |
| 文件大小： | 318K |
| 代理商： | TSM1051CD |
TSM1051
Application information
9/15
Figure 10. Output voltage versus output current
5.2
Compensation
The voltage-control trans-conductance operational amplifier can be fully compensated. Both
of its output and negative input are directly accessible for external compensation
components.
An example of a suitable compensation network is shown in Figure 3. It consists of a
capacitor Cvc1 = 2.2 nF and a resistor Rcv1 = 470 k
in series.
The current-control trans-conductance operational amplifier can be fully compensated. Both
its output and negative input are directly accessible for external compensation components.
An example of a suitable compensation network is shown in Figure 3. It consists of a
capacitor Cic1 = 2.2 nF and a resistor Ric1 = 22 k
in series. In order to reduce the
dissipation of the device (especially with VCC voltage values close to 12 V) and to increase
the stability of the application it is suggested to limit the current flowing in the OUT pin of the
device adding a resistor in series with the opto-coupler.
An example of a suitable RLED value could be 330 in series with the opto-coupler in case
VCC = 12 V.
5.3
Start up and short circuit conditions
Under start-up or short-circuit conditions the device is not provided with a high enough
supply voltage. This is due to the fact that the chip has its power supply line in common with
the power supply line of the system.
Therefore, the current limitation can only be ensured by the primary PWM module, which
should be chosen accordingly.
If the primary current limitation is considered not to be precise enough for the application,
then a sufficient supply for the device has to be ensured under any condition. It would then
be necessary to add some circuitry to supply the chip with a separate power line. This can
be achieved in numerous ways, including an additional winding on the transformer.
The following schematic shows how to realize a low-cost power supply for the device (with
no additional windings).
Vout
Iout
Voltage regulation
C
ur
ren
tr
egu
lat
ion
(Vcc of the device independent from output voltage)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TSM1051CDT | 功能描述:电池管理 Voltage/Current Cont RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| TSM1051CLT | 功能描述:电池管理 Voltage/Current Cont RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| TSM1051D | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR BATTERY CHARGERS AND ADAPTORS |
| TSM1051L | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR BATTERY CHARGERS AND ADAPTORS |
| TSM1052 | 功能描述:电压模式 PWM 控制器 Constant Vltg Current Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
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