Product # MCOTS-C-28-12-HP

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-0005279 Rev. 1

06/16/09

Page 10

Output:

Current:

12V

16A

MCOTS-C-28-12-HP

Technical Specification

APPLICATIONCONSIDERATIONS

Figure C: Typical application circuit (negative logic unit, permanently enabled).

External

Input

Filter

Trim

I

load

C

load

R

trim-up

or

R

trim-down

ON/OFF

Electrolytic

Capacitor

C

2

C

1

Regulation

Stage

Isolation

Stage

Input System Instability: This condition can occur because

any dc-dc converter appears incrementally as a negative

resistanceload.Adetailedapplicationnotetitled“InputSystem

Instability”isavailableontheSynQorwebsitewhichprovides

anunderstandingofwhythisinstabilityarises,andshowsthe

preferredsolutionforcorrectingit.

Application Circuits:FigureCprovidesatypicalcircuitdiagram

whichdetailstheinputfilteringandvoltagetrimming.

Input Filtering and External Capacitance:FigureDprovides

adiagramshowingtheinternalinputfiltercomponents.Thisfilter

dramaticallyreducesinputterminalripplecurrent,whichotherwise

couldexceedtheratingofanexternalelectrolyticinputcapacitor.

The recommended external input capacitance is specified in the

Input Characteristics section on the Electrical Characteristics

page.Moredetailedinformationisavailableintheapplicationnote

titled“EMICharacteristics”ontheSynQorwebsite.