TSM1051 STMicroelectronics, TSM1051 Datasheet - Page 4

• Manufacturer Part Number: TSM1051
• Description: CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR BATTERY CHARGERS AND ADAPTORS
• Manufacturer: STMicroelectronics

TSM1051
Figure 1 : Internal Schematic
Figure 2 : Typical Adapter or Battery Charger Application Using TSM1051
In the above application schematic, the TSM1051 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
Ictrl
TSM1051
Vsense
Rsense
Vsense
1.210V
200mV
+
+
-
-
Ictrl
IL
Vcc
Gnd
Ric2
500
Out
Vsense
+
+
-
-
Rout
Ric1
22K
Cic1
2.2nF
Vcc
Gnd
Out
To primary
Cvc2
22pF
Rvc1
470K
D
Cvc1
2.2nF
R2
R1
+
IL
OUT+
OUT-