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參數(shù)資料
| 型號(hào)： | PQ60025HPA80NRF-G |
| 廠(chǎng)商： | SYNQOR INC |
| 元件分類(lèi)： | 電源模塊 |
| 英文描述： | 1-OUTPUT 200 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT, HALF BRICK PACKAGE-10 |
| 文件頁(yè)數(shù)： | 2/13頁(yè) |
| 文件大?。?/td> | 1536K |
| 代理商： | PQ60025HPA80NRF-G |
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Product # PQ60025HPA80
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HP625K Rev. D
05/28/10
Page 10
Input:
Output:
Current:
Package:
35-75 V
2.5 V
80 A
Half-brick
Technical Specification
OUTPUT VOLTAGE TRIM (Pin 8):TheTRIMinputpermitsthe
user to adjust the output voltage across the sense leads up or
downaccordingtothetrimrangespecifications.
Todecreasetheoutputvoltage,theusershouldconnectaresistor
betweenPin8andPin7(SENSE(-)input).Foradesireddecrease
ofthenominaloutputvoltage,thevalueoftheresistorshouldbe
Rtrim-down=
(100%)-2(kW)
D
where
D% = Vnominal–Vdesired
x100%
Vnominal
Toincreasetheoutputvoltage,theusershouldconnectaresistor
betweenPin8andPin9(SENSE(+)input).Foradesiredincrease
ofthenominaloutputvoltage,thevalueoftheresistorshouldbe
FigureCgraphstherelationshipbetweenthetrimresistorvalue
andRtrim-upandRtrim-down,showingthetotalrangetheoutput
voltagecanbetrimmedupordown.
Figure C: Trim Graph for 2.5Vout module
Note:theTRIMfeaturedoesnotaffectthevoltageatwhichthe
output over-voltage protection circuit is triggered. Trimming the
output voltage too high may cause the over-voltage protection
circuittoengage,particularlyduringtransients.
ItisnotnecessaryfortheusertoaddcapacitanceattheTrimpin.
Thenodeisinternallybypassedtoeliminatenoise.
Total DC Variation of Vout:Fortheconvertertomeetitsfull
specifications, the maximum variation of the DC value of Vout,
duetobothtrimmingandremoteloadvoltagedrops,shouldnot
begreaterthanthatspecifiedfortheoutputvoltagetrimrange.
PROTECTIONFEATURES
Input Under-Voltage Lockout: The converter is designed
toturnoffwhentheinputvoltageistoolow,helpingavoidan
inputsysteminstabilityproblem,describedinmoredetailinthe
applicationnotetitled“InputSystemInstability”ontheSynQor
website. The lockout circuitry is a comparator with DC hyster-
esis.Whentheinputvoltageisrising,itmustexceedthetypical
Turn-On Voltage Threshold value (listed on the specification
page) before the converter will turn on. Once the converter is
on,theinputvoltagemustfallbelowthetypicalTurn-OffVoltage
Thresholdvaluebeforetheconverterwillturnoff.
Input Over-Voltage Shutdown:AvailableonPQ48models
only.Theconverterturnsoffwhentheinputvoltageistoohigh,
allowingtheconvertertowithstandaninputvoltageashighas
100Vwithoutdestruction.Theshutdowncircuitryisacomparator
withDChysteresis.Whentheinputvoltageexceedsthetypical
Input Over-Voltage Shutdown value, the converter will turn off.
Once the converter is off, it will turn back on when the input
voltage falls below the minimum Input Over-Voltage Shutdown
value.
Output Current Limit: The maximum current limit remains
constantastheoutputvoltagedrops.However,oncetheimped-
anceoftheshortacrosstheoutputissmallenoughtomakethe
outputvoltagedropbelowthespecifiedOutputDCCurrent-Limit
ShutdownVoltage,theconverterturnsoff.
Theconverterthenentersa“hiccupmode”whereitrepeatedly
turnsonandoffata5Hz(nominal)frequencywitha5%duty
cycle until the short circuit condition is removed. This prevents
excessiveheatingoftheconverterortheloadboard.
Output Over-Voltage Limit:Ifthevoltageacrosstheoutput
pins exceeds the Output Over-Voltage Protection threshold, the
converter will immediately stop switching. This prevents dam-
age to the load circuit due to 1) excessive series resistance in
outputcurrentpathfromconverteroutputpinstosensepoint,2)
areleaseofashort-circuitcondition,or3)areleaseofacurrent
limit condition. Load capacitance determines exactly how high
theoutputvoltagewillriseinresponsetotheseconditions.After
200mstheconverterwillautomaticallyrestart.
Over-Temperature Shutdown:Atemperaturesensoronthe
convertersensestheaveragetemperatureofthemodule.Thether-
malshutdowncircuitisdesignedtoturntheconverteroffwhenthe
temperatureatthesensedlocationreachestheOver-Temperature
Shutdownvalue.Itwillallowtheconvertertoturnonagainwhen
thetemperatureofthesensedlocationfallsbytheamountofthe
Over-TemperatureShutdownRestartHysteresisvalue.
1
10
100
1,000
0
2
4
6
8
10
12
14
16
18
20
Tr
im
Re
si
st
an
ce
(k
O
hm
s)
% Increase in Vout
% Decrease in Vout
(k
W)
Rtrim-up=
(Vnominal–2)xVDES+VNOM
1.225
VDES-VNOM
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