TLE 6363

Data Sheet Rev. 1.2

18

2003-06-02

Application Note:

A short circuit from

V

external boost diode or the boost inductance if there is no overcurrent limitation in that

path.

Figure 7

Most Important Waveforms of the Boost Converter Circuit

AED02672

t

C

V

Error

V

and

V

CV

CP

V

t

L

H

OCLK

PWM

L

H

t

t

I

BOI

BOLI

I

DBO

I

t

BOI

V

t

BOOST

V

S

V

Overcurrent Threshold Exceeded

Controlled by the

Load-Current Increasing with Time;

Error Voltage

Overcurrent Comp

Controlled by the Error Amp