Directdriving:

Underdirectdriving,thepowersupplywillworkin"constantcurrentmode(CC)"andoutputvoltageofthepowersupplywillbeclampedbysumof

forwardvoltage(V )oftheLEDstrip.

F

ThetotalforwardvoltageofseriesconnectingLEDsissuggestedfor60%~95%ofpowersupplyratedoutputvoltageduetoconcernofthebestPF

valueandefficiency.

AC

source

I/P

O/P

HLG-120H

WithLEDdriver

Usingadditionaldriver,thepowersupplywillworkin"constantvoltagemode(CV)"andoutputvoltageofthepowersupplywillbekeptinratedvalue.

Inthisdrivemode,severaldesignissuesneedtobeconsidered:

1.OutputvoltageofPSUmustbehigherthantotalforwardvoltageofseriesconnectingLEDsby3Vminimum.

2.Inputcapacitor(Cin)ofLEDdrivercircuitshoulduse47uF~100uF(typ.)ofratingdependsontheoperatingfrequencyoftheLEDdriver.

Thehighertheoperatingfrequencyisused,thesmallervalueofCinshouldbechosen,andviceversa.

AC

source

I/P

O/P

ICCircuit

Cin

Cout

R

L

HLG-120H

3.DonotuseBtypewithLEDdriver.

DimmingconnectiondiagramforturningthelightingfixtureON/OFF:

UsingaswitchandrelaycanturnON/OFFthelightingfixture.

Usingthebuilt-indimmingfunctiononB-typemodelcan'tturnthelightingfixturetotallydark.Pleaserefertotheconnectionmethodbelowto

achieve0%brightnessofthelightingfixtureconnectingtotheLEDpowersupplyunit.

1.Outputconstantcurrentlevelcanbeadjustedthroughoutputcablebyconnectingaresistoror1~10Vdcor10VPWMsignalbetweenDIM+andDIM-.

2.TheLEDlightingfixturecanbeturnedON/OFFbytheswitch.

N

FG

L

LEDLighting

Relay

Blue

Brown

Green/

Yellow

AC/L

AC/N

HLG-120H

B Type

DIM+

DIM-

V(-)

V(+)

Blue

White

Black

Red

Switch

Adjuster

0~100KOhmsresistance

1~10VDCVoltage

10VPWMSignal

DIMMINGOPERATION(forB-typeonly)

120WSingleOutputSwitchingPowerSupply

FileName:HLG-120H-SPEC2011-01-31