TSM105 ST Microelectronics, TSM105 Datasheet - Page 4

• Manufacturer Part Number: TSM105
• Description: Constant Voltage and Constant Current Controller
• Manufacturer: ST Microelectronics

TSM105
Figure 1 : Internal Schematic
Figure 2 : Typical Adapter or Battery Charger Application Using TSM105
In the above application schematic, the TSM105 is used on the secondary side of a flyback adapter (or
battery charger) to provide an accurate control of voltage and current. The above feedback loop is made
with an optocoupler.
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+
1.210V
200mV
TSM105
Ictrl
Vcc
Vsense
Rsense
1.210V
200mV
+
+
-
-
IL
Ictrl
Out
Vctrl
Gnd
Vcc
+
+
-
-
Ric1
22
Cic1
100nF
Vctrl
Gnd
Out
To primary
Cvc2
22pF
Rvc1
470K
D
Cvc1
2.2nF
R2
R1
+
IL
OUT+
OUT-