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參數(shù)資料
| 型號(hào)： | TSM105D |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類(lèi)： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR BATTERY CHARGERS AND ADAPTORS |
| 中文描述： | 恒壓恒流控制器，用于電池充電器及火牛 |
| 文件頁(yè)數(shù)： | 6/9頁(yè) |
| 文件大?。?/td> | 95K |
| 代理商： | TSM105D |
TSM105
6/9
An example of a suitable compensation network is
shown in Fig.2. It consists of a capacitor
Cvc1=2.2nF and a resistor Rcv1=470K
in series,
connected in parallel with another capacitor
Cvc2=22pF.
The current-control trans-conductance operation-
al amplifier has to be compensated in a different
way, since its negative input is connected to
ground. A series connection of a capacitor
Cic1=100nF and a resistor Ric1=22
can be put
between OUT and GND to stabilize the global reg-
ulation loop.
3. Start Up and Short Circuit Conditions
Under start-up or short-circuit conditions the
TSM105 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 sup-
ply line of the system.
Therefore, the current limitation can only be en-
sured 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 suffi-
cient supply for the TSM105 has to be ensured un-
der any condition. It would then be necessary to
add some circuitry to supply the chip with a sepa-
rate power line. This can be achieved in numer-
ous ways, including an additional winding on the
transformer.
The following schematic shows how to realise a
low-cost power supply for the TSM105 (with no
additional windings).
Please pay attention to the fact that in the particu-
lar case presented here, this low-cost power sup-
ply can reach voltages as high as twice the volt-
age of the regulated line. Since the Absolute Max-
imum Rating of the TSM105 supply voltage is 14
V, this low-cost auxiliary power supply can only be
used in applications where the regulated line volt-
age does not exceed 7 V.
Figure 4 :
+
-
+
-
1.210V
200mV
Vcc
Out
Vctrl
Gnd
Ictrl
D
+
CS
R2
R1
Rsense
Rvc1
470K
Cvc1
2.2nF
Ric1
22
To primary
OUT+
OUT-
+
TSM105
Cic1
100nF
Cvc2
22pF
L
IL
IL
Vsense
DS
+
Rs
Vcc
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TSM105L | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR BATTERY CHARGERS AND ADAPTORS |
| TSM-105-L-DV-LC-P | 制造商:Samtec Inc 功能描述:SMT .025" SQUARE POST HEADER .100 CENTERLINE - Bulk |
| TSM106 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Dual Operational Amplifier and Voltage Reference |
| TSM-106 -02-S-DV-P-TR | 制造商:Samtec Inc 功能描述:CONN UNSHRD HDR HDR 12 POS 2.54MM SLDR ST SMD - Tape and Reel |
| TSM-106-01-F-DH | 制造商:Samtec Inc 功能描述:.025 SQ. TERMINAL STRIPS - Bulk |
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