TSM1012

4/8

In the above application schematic, the TSM1012 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.

Figure 1 : Internal Schematic

Figure 2 : Typical Adapter or Battery Charger Application Using TSM1012

28V

Vref

Vcc

CC

CC-

CC+

Gnd

CV

CV-

CV+

Out

1,25V

3

4

8

5

1

7

2

6

Rsense

C2

R2

R1

C1

C3

optocoupler

secondary side

Cic1

2,2nF

Cvc1

2,2nF

Ric1

22K

Rvc1

22K

Rlimit

R4

R5

R3

D1

D2

OUT+

OUT-

Ric2

1K

PWM

controller

optocoupler

primary side

TSM1012

28V

Vref

Vcc

CC

CC-

CC+

Gnd

CV

CV-

CV+

Out

1,25V

3

4

8

5

1

7

2

6

C4

47nF