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6OLTAGE #ONTROLLED !MP
7ATT %LECTRONIC ,OADS
&EATURES
N
N
N
N
N
N
N
N
N
N
6 )NPUTCONTROL VOLTAGE
! OUTPUTLOAD CURRENT
6 OUTPUT COMPLIANCE VOLTAGE
7 OUTPUTLOAD POWER
-7 OUTPUT IMPEDANCE
6DC )SOLATION
ACCURACY UNDER ALL CONDITIONS
SEC FULL SCALE STEP RESPONSE
X SHIELDED METAL PACKAGE
/PERATE IN PARALLEL FOR HIGHER POWER
!PPLICATIONS
N
N
N
N
N
0OWER SUPPLY TEST AND CHARACTERIZATION
3TATICDYNAMIC POWER SUPPLY BURN IN
0OWER RESISTOR SUBSTITUTION
2EAL TIME LOAD SIMULATION
#APACITOR DISCHARGE TESTING
4HE $4,! IS AN ISOLATED 6DC NEAR IDEAL :IN :/54 -7 ANALOGVOLTAGE CONTROLLED
CURRENT SINK )TgS ! OUPUTLOAD CURRENT IS STRAIGHTFORWARDLY PROGRAMMED BY APPLYING A 6
INPUT 4HE CONTROL SIGNAL CAN BE GENERATED BY CIRCUITS AS SIMPLE AS THE WIPER OF A TRIMPOT OR AS
SOPHISTICATED AS PROGRAMMABLE LOGIC CONTROLLERS 0,#gS OR ANALOG OUTPUT COMPUTER )/ BOARDS $!
BOARDS 4HE $4,! SUPPORTS ANY COMBINATION OF )/54 !MPS AND 6/54 6OLTS
)TS THERMALLY EFlCIENT METAL PACKAGE WHEN PROPERLY HEAT SUNK CAN DISSIPATE OUTPUTLOAD POWER UP
TO 7ATTS
4HE EASY TO USE $4,! IS AN EXCELLENT BUILDING BLOCK FOR LOW COST FULLY mEXIBLE POWER SUPPLY
!#$# OR $#$# OR POWER COMPONENT -/3&%4gS DIODES ETC TEST AND BURN IN APPLICATIONS
)T IS ACCURATE ¢M! OFFSET ERROR ¢ OVERALL ACCURACY FAST «SEC FULL SCALE STEP RESPONSE
AND CAPABLE OF IMPRESSIVE RESOLUTION )F IT IS CONTROLLED WITH A BIT 6 $! CONVERTER FOR
EXAMPLE ONE ,3" LEAST SIGNIlCANT BIT OF THE $! CORRESPONDS TO A M! CHANGE IN THE $4,!gS
OUTPUTLOAD CURRENT
4HE $4,! IS PACKAGED IN A SMALL X X THERMALLY EFlCIENT METAL PACKAGE INCORPORATING
AN ALUMINUM BASEPLATE WITH THROUGH HOLE MOUNTING INSERTS )T IS POWERED BY A SINGLE 6 SUPPLY
AND DRAWS A MERE M!
4HE $4,! HAS AN OUTPUT COMPLIANCE VOLTAGE OF 6OLTS 3HOULD THE OUTPUTLOAD VOLTAGE
DROP BELOW THE 6 REQUIRED FOR PROPER BIASING AN INTERNAL MONITORING CIRCUIT ACTIVATES THE $4,!gS
OUTPUT &AULT LINE 3EE $!4%,gS $4,! ,# FOR COMPLIANCE VOLTAGES AS LOW AS 6
4HE $4,! AND OTHER ELECTRONIC LOADS CONTROLLER BOARDS AND SOFTWARE FROM $!4%, ARE
OUTSTANDING BUILDING BLOCK COMPONENTS FOR POWER SUPPLY BURN IN AND TEST SYSTEMS 4HEY ARE
EXTREMELY RELIABLE COST EFFECTIVE SOLUTIONS THAT ENABLE YOU TO QUICKLY CONlGURE IMPRESSIVELY ACCURATE
SYSTEMS
&IGURE 3IMPLIlED 3CHEMATIC
$!4%, )NC -ANSlELD -! 53!
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4EL &AX s
%MAIL SALES
DATELCOM
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)NTERNET WWWDATELCOM
7!44 6/,4!'% #/.42/,,%$ %,%#42/.)# ,/!$
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0ERFORMANCE 3PECIlCATIONS AND /RDERING 'UIDE
/UTPUT
/UTPUT
)NPUT
-ODEL
$4,!
#ONTROL
6OLTAGE
6OLTS
TO 6
)MPEDANCE
-INIMUM
-7
#URRENT
!MPS
#OMPLIANCE
6OLTAGE
6OLTS z
2ESOLUTION
M! y
0OWER
7ATTS
0ACKAGE
#ASE 0INOUT
# 0
4YPICAL AT 4! ª# WITH NOMINAL 6 SUPPLY VOLTAGE UNLESS NOTED
,ISTED RESOLUTION M! IS FOR A TYPICAL APPLICATION IN WHICH THE $4,! IS CONTROLLED BY A VOLTAGE
GENERATED BY A BIT $! CONVERTER WITH A 6 OUTPUT RANGE /NE ,3" LEAST SIGNIlCANT BIT OF THE $!
CORRESPONDS TO OF FULL SCALE !MPS WHICH EQUALS APPROXIMATELY M!
&OR PROPER OPERATION THE UNITgS OUTPUTLOAD VOLTAGE MUST REMAIN WITHIN THIS RANGE 6OLTAGES GREATER THAN THE LISTED
MAXIMUM CAN DAMAGE THE DEVICE 6OLTAGES LESS THAN THE MINIMUM PROVIDE INSUFlCIENT BIAS FOR THE OUTPUT STAGE AND WILL
RESULT IN UNPREDICTABLE OR NO OPERATION 3EE /UTPUT #OMPLIANCE 6OLTAGE AND THE &AULT ,INE FOR DETAILS
0!24 .5-"%2 3425#452%
-%#(!.)#!, 30%#)&)#!4)/.3
$4,
$4,
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!
!
! 3ERIES
$!4%,
%LECTRONIC ,OAD
(IGH 2ELIABILITY
6OLTAGE 2ANGE
TO 6
/UTPUT 0OWER,OAD 7ATTS
4%-0%2!452% $%2!4).'
"ASEPLATE 4EMPERATURE #
"ASEPLATE 4EMPERATURE #
4HE HORIZONTAL AXIS OF THE ABOVE CHART REFERENCES THE TEMPERATURE OF THE $4,!gS ALUMINUM
BASEPLATE 4HE DEVICE CAN CONTINUALLY DISSIPATE UP TO 7ATTS IF THE BASEPLATE IS MAINTAINED
AT OR BELOW ª# !T ª# AMBIENT TEMPERATURE WITH NO HEAT SINK OR SUPPLEMENATAL AIR
mOW THE $4,! CAN RELIABLY DISSIPATE A CONTINUOUS 7ATTS
)/ #ONNECTIONS
0IN
&UNCTION 0
0IN
&UNCTION 0
6OLT 3UPPLY
6OLT 2ETURN
,OAD
#ONTROL 6OLTAGE )N &AULT
,OAD
.O 0IN
,OAD
#ONTROL 6OLTAGE )N ,OAD
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#ONTACT $!4%, FOR (EAT 3INK INFORMATION
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7!44 6/,4!'% #/.42/,,%$ %,%#42/.)# ,/!$
0ERFORMANCE&UNCTIONAL 3PECIlCATIONS
4YPICAL
4! ª# WITH NOMINAL 6 SUPPLY VOLTAGE UNLESS NOTED
,ISTED RESOLUTION M! IS FOR A TYPICAL APPLICATION IN WHICH THE $4,! IS CONTROLLED BY
A VOLTAGE GENERATED BY A BIT $! CONVERTER WITH A 6 OUTPUT RANGE /NE ,3" LEAST
SIGNIlCANT BIT OF THE $! CORRESPONDS TO OF FULL SCALE !MPS WHICH
EQUALS APPROXIMATELY M!
/FFSET ERROR IS DElNED AS THE CURRENT SUNKSOURCED BY THE $4,!gS OUTPUT UNDER ANY
OUTPUT VOLTAGE CONDITIONS WHEN THE APPLIED CONTROL VOLTAGE IS 6OLTS
!PPLIES OVER ALL RANGESCOMBINATIONS OF SPECIlED OUTPUT CURRENT LOAD VOLTAGE OUTPUT POWER
OPERATING TEMPERATURE AND 6##
&OR PROPER OPERATION THE $4,!gS OUTPUT VOLTAGE MUST REMAIN WITHIN THE RANGE LISTED
6OLTAGES GREATER THAN THE LISTED MAXIMUM CAN DAMAGE THE DEVICE 6OLTAGES LESS THAN THE
LISTED MINIMUM PROVIDE INSUFlCIENT BIAS FOR THE OUTPUT STAGE AND WILL RESULT IN UNPREDICTABLE OR
NO OPERATION 3EE /UTPUT #OMPLIANCE 6OLTAGE AND &AULT ,INE FOR DETAILS
4HE $4,! CAN ACHIEVE ITS MAXIMUM OUTPUTLOAD POWER ONLY WHEN ITS BASEPLATE
TEMPERATURE IS PROPERLY MAINTAINED 3EE 4EMPERATURE $ERATING
} 3PECIlED FOR THE FULL SCALE STEP FROM M! TO !MPS SETTLING TO ¢ ¢M! OF lNAL
VALUE ! MINIMAL LOADING OF M! IS RECOMMENDED TO ACHIEVE THE FASTEST DYNAMIC RESPONSE
~ "ASEPLATE TEMPERATURE 3EE .OTE AND 4EMPERATURE $ERATING
)NPUT
#ONTROL 6OLTAGE
6OLTS
)MPEDANCE
-7 MINIMUM
/UTPUT
)/54 !MPS 6). 6OLTS
4RANSFER &UNCTION
#URRENT
2ANGE
!MPS
&3 M!
¢ M!
¢ MAXIMUM
¢ MAXIMUM
2ESOLUTION x
/FFSET %RROR y
'AIN %RROR
!BSOLUTE !CCURACYz
6OLTAGE {
6OLTS
0OWER |
7ATTS
)SOLATION 6OLTAGE
!NALOG )NPUT TO ¢ ,OAD
6 0OWER TO )NPUT OR ¢ ,OAD
!NY PIN TO CASE
6DC MINIMUM
6DC MINIMUM
6DC MINIMUM
0OWER 3UPPLY 6OLTAGE 6CC 0IN )SOLATION 2ESISTANCE
-7 MINIMUM
!BSOLUTE -AXIMUM 2ATINGS
&AULT ,OGIC ,EVELS
TO 6OLTS
/UTPUT 2EVERSE 0OLARITY 0ROTECTION
.O PROTECTION
/UTPUT /VERVOLTAGE 0ROTECTION
.O PROTECTION
/UTPUT 5NDERVOLTAGE 0ROTECTION
9ES 3EE &AULT ,INE
,OGIC !
6OLTS MINIMUM
#ASE 4EMPERATURE
,OGIC M!
6OLTS MAXIMUM
3TORAGE 4EMPERATURE
$YNAMIC 0ERFORMANCE
/UTPUT 3LEW 2ATE
!«SEC MINIMUM
/UTPUT 3ETTLING 4IME }
«SEC
$YNAMIC ,OADING }
M! TO !
TO !
K(Z
K(Z
,EAD 4EMPERATURE SOLDERING SEC
0OWER 3UPPLY #URRENT }
3TORAGE 4EMPERATURE
6OLTS 6 NOMINAL
/VERVIEW
M! TYP M! MAX
4HE $4,! IS AN ANALOG PROGRAMMABLE TO 6 CONTROL CURRENT SINK )TS
OUTPUTLOAD CURRENT RANGE IS TO !MPS OVER A COMPLIANCE VOLTAGE RANGE OF
TO 6OLTS AND AN OUTPUTLOAD POWER RANGE OF TO 7ATTS 4HE DEVICEgS
TRANSFER FUNCTION IS AS FOLLOWS
TO ª#
TO ª#
(UMIDITY .ON CONDENSING
TO !LTITUDE !BOVE 3EA ,EVEL
/PERATING 4EM
FEET
$IMENSIONS
#
4%#(.)#!, ./4%3
%NVIRONMENTAL
/PERATING 4EMPERATURE~
#
n TO #
4HESE ARE STRESS RATINGS %XPOSURE OF DEVICES TO ANY OF THESE CONDITIONS MAY ADVERSELY AFFECT LONG TERM
RELIABILITY 0ROPER OPERATION UNDER CONDITIONS OTHER THAN THOSE LISTED IN THE 0ERFORMANCE&UNCTIONAL
3PECIlCATIONS 4ABLE IS NOT IMPLIED
0OWER 2EQUIREMENTS
0OWER 3UPPLY 2ANGE 6CC 0IN
TO 6OLTS
#ONTROL 6OLTAGE )N 0IN )OUT !MPS 6). 6OLTS
0HYSICAL
%XAMPLES #ONTROL 6). 6OLT )/54 !MPS
#ONTROL 6). 6OLTS )/54 !MPS
X X X X MM
3HIELDING
3IX SIDED
#ASE -ATERIAL
4IN PLATED STEEL SHELL WITH
ALUMINUM BASEPLATE
0IN -ATERIAL
"RASS SOLDER COATED
-OUNTING (OLES
4HROUGH HOLE SPACERS CLEARANCE
7EIGHT
OUNCES GRAMS
)N A TYPICAL POWER SUPPLY TEST OR BURN IN APPLICATION THE OUTPUT PINS OF THE
DEVICE UNDER TEST $54 ARE CONNECTED TO THE $4,!gS ,OAD PINS AND AND ,OAD PINS AND OUTPUTS
7!44 6/,4!'% #/.42/,,%$ %,%#42/.)# ,/!$
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4%#(.)#!, ./4%3
/UTPUT #OMPLIANCE 6OLTAGE AND THE &AULT ,INE
4HERMAL #ONSIDERATIONS
&OR PROPER OPERATION THE $4,!gS OUTPUTLOAD VOLTAGE MUST ALWAYS BE BETWEEN
AND 6OLTS 4HE DEVICE CANNOT BE USED TO DIRECTLY LOAD EXTREMELY
LOW VOLTAGE SUCH AS 6 OR 6 POWER COMPONENTS OR TO SIMULATE A TRUE
SHORT CIRCUIT 6OLTS 6OLTAGES GREATER THAN 6 CAN DAMAGE THE DEVICE
6OLTAGES 6 WILL RESULT IN INSUFlCIENT BIASING OF THE OUTPUT CURRENT SOURCE AND
CONSEQUENTLY UNPREDICTABLE OR NO OPERATION !CCORDINGLY WE HAVE INSTALLED AN
INTERNAL OUTPUTLOAD VOLTAGE MONITORING CIRCUIT )F THE OUTPUTLOAD VOLTAGE DROPS
BELOW 6 AND THE $4,!gS OUTPUT IS AT RISK OF BECOMING DISABLED THE &AULT
LINE ACTIVATES
4HE $4,! CAN RELIABLY HANDLE 7 LOADS IF ITS ALUMINUM BASEPLATE
TEMPERATURE IS MAINTAINED AT OR BELOW ª# 7ITH NO HEAT SINKING OR
AUXILIARY COOLING THE DEVICE CAN ONLY HANDLE LOADS UP TO 7ATTS 0LEASE
REFER TO THE 4EMPERATURE $ERATING #URVE FOR ADDITIONAL INFORMATION $ATELgS
%LECTRONIC ,OAD !PPLICATIONS %NGINEERS CAN ASSIST YOU IN DEVELOPING HEAT
SINK SOLUTIONS FOR YOUR HIGHER POWER $4,! APPLICATIONS 0LEASE CONTACT
US FOR DETAILS AND CONCERNING OUR $4, (3$ HEAT SINK
#ONSTANT 2ESISTANCE !PPLICATION
4HE &AULT LINE IS AN ACTIVE LOW FUNCTION WITH AN OPEN COLLECTOR OUTPUT INTERNAL
K7 PULL UP RESISTOR TO 6 5NDER NORMAL CONDITIONS ITS OUTPUT IS HIGH
LOGIC 5NDER FAULT CONDITIONS 6OUT 6 ITS OUTPUT DROPS TO A LOGIC
4HERE IS NO OUTPUTLOAD VOLTAGE MONITORING CIRCUIT FOR VOLTAGES GREATER THAN
6 AND OPERATION ABOVE 6 CAN DAMAGE THE DEVICE
4HE $4,! OPERATES AS A CONSTANT CURRENT ELECTRONIC LOAD IN ITS TYPICAL
CONlGURATION ! CONSTANT RESISTANCE MODE OF OPERATION CAN BE ACHIEVED
AS FOLLOWS
4HE $4,! HAS A HIGH IMPEDANCE ISOLATED ANALOG INPUT THAT ALLOWS THE
ANALOG INPUTS TO BE CONNECTED DIRECTLY ACROSS THE LOAD 4HE $4,! SINKS
AMPS FOR A 6 FULL SCALE INPUT OR ) X 6). )F YOU MAKE 6). 6,/!$
THE VOLTAGE ACROSS THE LOAD THEN 2 6,/!$) 6,/!$ X 6,/!$ /HMS #ONSEQUENTLY THE LOAD LOOKS LIKE A /HM RESISTOR
!N OFFSET SUPPLY CAN BE INSERTED BETWEEN THE $4,!gS ,OAD OUTPUT PINS
AND AND THE POWER DEVICE UNDER TEST $54 TO TRANSLATE THE $4,!gS
6 OUTPUTLOAD VOLTAGE RANGE 4HE OFFSET SUPPLY MUST HAVE ADEQUATE CURRENT
CAPABILITIES AND BE CONNECTED WITH THE POLARITIES INDICATED IN &IGURE BELOW
5NDER NO CIRCUMSTANCES SHOULD THE VOLTAGE ACROSS THE $4,!gS OUTPUT BE
ALLOWED TO EXPERIENCE A POLARITY REVERSAL
&URTHERMORE IF YOU MAKE 6). K X 6,/!$ BY CONNECTING A POTENTIOMETER OR
RESISTIVE DIVIDER ACROSS THE LOAD THEN 2 6,/!$ X K X 6,/!$ K SO
ADJUSTING THE POTENTIOMETER WILL GIVE YOU AN ADJUSTABLE POWER RESISTOR EG AT
+ THEN 2 /HM K THEN 2 /HMS ETC 4HE ONLY LIMITATION
THAT YOU MUST OBSERVE IS THE MAXIMUM LOAD VOLTAGE 6 AND WATT
POWER DISSIPATION ! MULTIPLYING DIGITAL TO ANALOG CONVERTER OR A DIGITAL
POTENTIOMETER COULD BE UTILIZED TO MAKE A PROGRAMMABLE RESISTANCE
)F A 6! OFFSET SUPPLY IS INSERTED AS SHOWN THE RANGE OF $54 VOLTAGES WILL
BE TO 6OLTS 3UCH A CONlGURATION CAN BE USED FOR TRUE SHORT CIRCUIT
TESTING ! MECHANICAL RELAY CAN BE USED TO SHORT THE OUTPUTS OF THE $54 WHILE
THE OFFSET SUPPLY ENSURES THE $4,! ALWAYS SEES AT LEAST 6OLTS ACROSS ITS
OUTPUTS
&IGURE !N OFFSET 3UPPLY %NABLES
4RUE 3HORT #IRCUIT 4ESTING
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%MAIL SALES DATELCOM
$!4%, MAKES NO REPRESENTATION THAT THE USE OF ITS PRODUCTS IN THE CIRCUITS DESCRIBED HEREIN OR THE USE OF OTHER TECHNICAL INFORMATION CONTAINED HEREIN WILL NOT INFRINGE UPON EXISTING OR FUTURE PATENT RIGHTS 4HE DESCRIPTIONS CONTAINED HEREIN DO
NOT IMPLY THE GRANTING OF LICENSES TO MAKE USE OR SELL EQUIPMENT CONSTRUCTED IN ACCORDANCE THEREWITH 3PECIlCATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE 4HE $!4%, LOGO IS A REGISTERED $!4%, )NC TRADEMARK