M105 データシートの表示（PDF） - STMicroelectronics

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M105

CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR BATTERY CHARGERS AND ADAPTORS

STMicroelectronics 

TSM105

Figure 1 : Internal Schematic

1.210V

Vcc

+

Out

-

Vctrl

200mV

+

-

Gnd

Ictrl

Figure 2 : Typical Adapter or Battery Charger Application Using TSM105

TSM105

Vcc

1.210V

+

Out

-

Vctrl

200mV

+

-

Gnd

+

Ictrl

Vsense

Rsense IL

D

To primary

R2

Rvc1

470K

Cvc2

22pF

Cvc1

2.2nF

OUT+

IL

Cic1

+

100nF

Ric1

R1

22

OUT-

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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