AP1511

PWM CONTROL 5A STEP-DOWN CONVERTER

AP1511 Rev. 1

6 of 7

NOVEMBER 2007

www.diodes.com

Test Circuit

A

FB

VCC

VSS

EN

open

open

FB

VCC

VSS

EN

+

-

OUTPUT

OUTPUT

A

FB

VCC

VSS

EN

+

-

+

-

V

OUTPUT

OCSET

OCSET

OCSET

PVcc

PVcc

PVcc

Enable function test

Feedback function test

Operation function test

1K

3K

1.2K

6.8K

1K

33K

Function Description

PWM Control

The AP1511 consists of DC/DC converters that employ a pulse-width modulation (PWM) system. In converters of the AP1511, the

pulse width varies in a range from 0 to 100%, according to the load current. The ripple voltage produced by the switching can easily be

removed through a filter because the switching frequency remains constant. Therefore, these converters provide a low-ripple power over

broad ranges of input voltage and load current.

Not Recommended

for New Designs