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參數(shù)資料
| 型號： | PQ60260HTB10NYF |
| 廠商： | SYNQOR INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 250 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | HALF-BRICK PACKAGE-11 |
| 文件頁數(shù)： | 2/13頁 |
| 文件大?。?/td> | 1524K |
| 代理商： | PQ60260HTB10NYF |
Product # PQ60260HTB10
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HTB26F Rev. H
10/10/08
Page 10
Input:
Output:
Current:
Package:
35-75 V
26 V
9.6 A (250W)
Half-brick
Technical Specification
Todecreasetheoutputvoltage,theusershouldconnectaresistor
betweenPin7andPin6(SENSE(-)input).Foradesireddecreaseof
thenominaloutputvoltage,thevalueoftheresistorshouldbe
Rtrim-down=
(100%)-2(kW)
D
where
D% = Vnominal–Vdesired
x100%
Vnominal
Toincreasetheoutputvoltage,theusershouldconnectaresistor
betweenPin7andPin8(SENSE(+)input).Foradesiredincreaseof
thenominaloutputvoltage,thevalueoftheresistorshouldbe
(k
W)
Rtrim-up=
(Vnominal–2)xVDES+VNOM
1.225
VDES-VNOM
FigureCgraphstherelationshipbetweenthetrimresistorvalueand
Rtrim-upandRtrim-down,showingthetotalrangetheoutputvoltage
canbetrimmedupordown.
1
10
100
1,000
10,000
100,000
0
2
4
6
8
10
12
14
16
18
20
Trim
Resistance
(kOhms)
% Increase in Vout
% Decrease in Vout
Figure C: Trim Graph for 26Vout module
Note:theTRIMfeaturedoesnotaffectthevoltageatwhichtheout-
putover-voltageprotectioncircuitistriggered.Trimmingtheoutput
voltage too high may cause the over-voltage protection circuit to
engage,particularlyduringtransients.
ItisnotnecessaryfortheusertoaddcapacitanceattheTrimpin.
Thenodeisinternallybypassedtoeliminatenoise.
Total DC Variation of Vout: For the converter to meet its full
specifications,themaximumvariationoftheDCvalueofVout,due
to both trimming and remote load voltage drops, should not be
greaterthanthatspecifiedfortheoutputvoltagetrimrange.
PROTECTIONFEATURES
Input Under-Voltage Lockout: The converter is designed to
turnoffwhentheinputvoltageistoolow,helpingavoidaninput
systeminstabilityproblem,describedinmoredetailintheapplica-
tion note titled “Input System Instability” on the SynQor website.
ThelockoutcircuitryisacomparatorwithDChysteresis.Whenthe
inputvoltageisrising,itmustexceedthetypicalTurn-OnVoltage
Thresholdvalue(listedonthespecificationpage)beforethecon-
verterwillturnon.Oncetheconverterison,theinputvoltagemust
fallbelowthetypicalTurn-OffVoltageThresholdvaluebeforethe
converterwillturnoff.
Input Over-Voltage Shutdown: Available on PQ48 models
only. The converter turns off when the input voltage is too high,
allowing the converter to withstand an input voltage as high as
100Vwithoutdestruction.Theshutdowncircuitryisacomparator
with DC hysteresis. When the input voltage exceeds the typical
Input Over-Voltage Shutdown value, the converter will turn off.
Oncetheconverterisoff,itwillturnbackonwhentheinputvoltage
fallsbelowtheminimumInputOver-VoltageShutdownvalue.
Output Current Limit:Themaximumcurrentlimitremainscon-
stantastheoutputvoltagedrops.However,oncetheimpedance
oftheshortacrosstheoutputissmallenoughtomaketheoutput
voltagedropbelowthespecifiedOutputDCCurrent-LimitShutdown
Voltage,theconverterturnsoff.
Theconverterthenentersa“hiccupmode”whereitrepeatedlyturns
onandoffata5Hz(nominal)frequencywitha5%dutycycleuntil
theshortcircuitconditionisremoved.Thispreventsexcessiveheat-
ingoftheconverterortheloadboard.
Output Over-Voltage Limit: If the voltage across the output
pins exceeds the Output Over-Voltage Protection threshold, the
converterwillimmediatelystopswitching.Thispreventsdamageto
theloadcircuitdueto1)excessiveseriesresistanceinoutputcur-
rentpathfromconverteroutputpinstosensepoint,2)areleaseof
ashort-circuitcondition,or3)areleaseofacurrentlimitcondition.
Loadcapacitancedeterminesexactlyhowhightheoutputvoltage
willriseinresponsetotheseconditions.After200mstheconverter
willautomaticallyrestart.
Over-Temperature Shutdown: A temperature sensor on the
convertersensestheaveragetemperatureofthemodule.Thether-
malshutdowncircuitisdesignedtoturntheconverteroffwhenthe
temperatureatthesensedlocationreachestheOver-Temperature
Shutdownvalue.Itwillallowtheconvertertoturnonagainwhen
thetemperatureofthesensedlocationfallsbytheamountofthe
Over-TemperatureShutdownRestartHysteresisvalue.
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| PQ60260HTB10NYS | 制造商:SYNQOR 制造商全稱:SYNQOR 功能描述:Half-brick DC/DC Converter |
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| PQ60260HTB10PNS | 制造商:SYNQOR 制造商全稱:SYNQOR 功能描述:Half-brick DC/DC Converter |
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