TSM1051CD_02 Просмотр технического описания (PDF) - STMicroelectronics

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TSM1051CD_02

CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR BATTERY CHARGERS AND ADAPTORS

STMicroelectronics 

TSM1051

Figure 1 : Internal Schematic

1.210V

Vcc

+

Out

-

200mV

+

-

Gnd

Ictrl

Vsense

Figure 2 : Typical Adapter or Battery Charger Application Using TSM1051

TSM1051

1.210V

Vcc

Out

+

-

D

OUT+

To primary

R2

Rout

Cvc1

IL

Rvc1

Cvc2470K

22pF

2.2nF

200mV

+

Ictrl

+

-

Gnd

Vsense

Cic1

2.2nF

Ric1

22K

+

R1

Ric2

500

Vsense

OUT-

Rsense IL

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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