Product # IQ18xxxHPCxx

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-005029 Rev. B

04/13/09

Page 9

Technical Specification

Input:

Output:

Current:

Part no.:

Figure 1: Efficiency at nominal output voltage vs. load current for

Figure 2: Power dissipation at nominal output voltage vs. load current

Figure 3: Encased converter (without heatsink) max. output power derating vs.

ambient air temperature for airflow rates of 100 LFM through 400 LFM. Air flows

across the converter from input to output (nominal input voltage).

Figure 4: Encased converter (with 1/2” heatsink) max. output power derating vs.

ambient air temperature for airflow rates of 100 LFM through 400 LFM. Air flows

across the converter from input to output (nominal input voltage).

Figure 6: Output voltage response to step-change in input voltage

Ch 1: Vout (200 mV/div), Ch 2: Vin (10 V/div).

50% of Iout(max); dI/dt = 0.1 A/µs). Load cap:

(

0

10

20

30

40

50

60

25

40

55

70

85

Ambient Air Temperature (°C)

400 LFM (2.0 m/s)

300 LFM (1.5 m/s)

200 LFM (1.0 m/s)

100 LFM (0.5 m/s)

0

10

20

30

40

50

60

25

40

55

70

85

Ambient Air Temperature (°C)

400 LFM (2.0 m/s)

300 LFM (1.5 m/s)

200 LFM (1.0 m/s)

100 LFM (0.5 m/s)

0

5

10

15

20

25

30

0

10

20

30

40

50

Load Current (A)

10 Vin

18 Vin

36 Vin

60

65

70

75

80

85

90

95

100

0

10

20

30

40

50

Load Current (A)

10 Vin

18 Vin

36 Vin

9 - 36 V

3.3 V

50 A

IQ18033HPC50

9 - 36 V

3.3 V

50 A

IQ18033HPC50

IQ18033HPC50 electrical Characteristics (3.3 Vout)

Ta=25°C,airflowrate=300LFM,Vin=18Vdcunlessotherwisenoted;fulloperatingtemperaturerangeis-40°Cto+100°Cbaseplatetemperaturewith

appropriatepowerderating.Specificationssubjecttochangewithoutnotice.

Parameter

Min.

typ.

Max. Units notes & Conditions

InPUt CHARACteRIstICs

MaximumInputCurrent

28.0

A

Vinmin;trimup;incurrentlimit

No-LoadInputCurrent

210

260

mA

DisabledInputCurrent

3

4

mA

ResponsetoInputTransient

0.16

V

500V/ms;seeFigure6

InputTerminalRippleCurrent

440

mA

RMS

RecommendedInputFuse

3.0

A

Fastactingexternalfuserecommended

OUtPUt CHARACteRIstICs

OutputVoltageSetPoint

3.267

3.3

3.333

V

OutputVoltageRegulation

OverLine

±0.1

±0.3

%

OverLoad

±0.1

±0.3

%

OverTemperature

-50

50

mV

TotalOutputVoltageRange

3.218

3.383

V

Oversample,line,load,temperature&life

OutputVoltageRippleandNoise

20MHzbandwidth;seeNote1

Peak-to-Peak

0

80

160

mV

Fullload

RMS

12

20

mV

Fullload

OperatingOutputCurrentRange

0

50

A

Subjecttothermalderating

OutputDCCurrent-LimitInception

55.0

60.0

65.0

A

Outputvoltage10%Low

OutputDCCurrent-LimitShutdownVoltage

1.8

V

Back-DriveCurrentLimitwhileEnabled

1.5

A

Negativecurrentdrawnfromoutput

Back-DriveCurrentLimitwhileDisabled

0.1

mA

Negativecurrentdrawnfromoutput

MaximumOutputCapacitance

10,000

µF

Voutnominalatfullload(resistiveload)

OutputVoltageduringLoadCurrentTransient

StepChangeinOutputCurrent(0.1A/µs)

120

mV

50%to75%to50%Ioutmax

SettlingTime

200

µs

Towithin1%Voutnom

OutputVoltageTrimRange

-20

10

%

AcrossPins8&4;CommonFigures3-5;seeNote2

OutputVoltageRemoteSenseRange

10

%

AcrossPins8&4

OutputOver-VoltageProtection

3.9

4.0

4.2

V

Overfulltemprange

eFFICIenCY

100%Load

86

%

SeeFigure1forefficiencycurve

50%Load

89

%

SeeFigure1forefficiencycurve

Note1:Outputisterminatedwith1µFceramicand15µFlow-ESRtantalumcapacitors.Forapplicationsrequiringreducedoutputvoltagerippleandnoise,consult

SynQorapplicationssupport(e-mail:support@synqor.com)

Figures