TLE 4305

Data Sheet

9

Rev. 2.1, 2004-01-01

SMPS with TLE 4305 Secondary Regulator

The TLE 4305 is located on the secondary side of the regulator and controls the output

voltage as well as it limits the output current. Voltage and current can be chosen

independent from each other by the designer according to the application’s

requirements.

Figure 4

Application Circuit

V

(1)

I

(2)

Figure 3 shows the TLE 4305 as SMPS secondary regulator as application circuit. The

load capacitor

C

The diode D2 defines the current flow in the transformer.

AES02878

TLE 4305G

C

CCO

10 nF

CCO

C

VCO

10 nF

VCO

CRE

GND

VSE

V

S

C

S

100 nF

D1

RGL34D

n

3

n

1

CSE

R

Sense

OUT

C

L

470

D2

SMS2100

n

2

SMPS

Primary

Side

Cool Set

TDA 1683x

PWM Duty

Cycle

= f(

V

FB

Optocoupler

L

S

C

S1

C

S2

+

-

V

Q

Line

R

V1

R

V2