INNOVATION EXCELLENCE DTL5A-LC Watt, Serial-Input Electronic

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INNOVATION EXCELLENCE DTL5A-LC Watt, Serial-Input Electronic

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INNOVATION EXCELLENCE
DTL5A-LC
Watt, Serial-Input Electronic Load Compliance Version
Features
Serial-input controlled watts maximum load capacity 50V, 2.0A capability Parallel load capability higher
current power applications
Dynamic loading Compliance Voltage down Volts
DATEL's DTL5A-LC serial-input controlled electronic loads featuring compliance voltage operation (down Volts)! Similar DATEL's DTL3A, DTL5A-LC also offers loading current range 2.0A full scale range with loading voltage 50V. DTL5A-LC's ability operate down Volts, allows this device used with next-generation, low-voltage output power supplies. DTL3A's compliance voltage operates from Volts Volts, sufficient today's 2.5V, 3.3V, Volt, etc., power product voltages, with improved gain specifications. small efficient heat transfer package allows 100W power dissipation using external heatsinking. devices packaged small 0.4" metal package, providing easy mounting capability external heatsinks. monitor circuit makes sure compliance voltage present, before biasing DTL5A-LC's output stage. Fault line goes active, should device-under-test below compliance voltage. These loads feature fast current step response times, settling full scale step µsec Full Scale Range (FSR). Dynamic loading 20kHz, current resolution ±0.025% achieved. Opto-isolators utilized digital input lines, with Volts isolation provided from load outputs input ground. optoisolators internally buffered, making DTL5A-LC easy drive, with digital board. Isolation from case Volts.
Applications
Power supply test characterization Dynamic power supply burn-in Battery capacity testing Current source testing Capacitor discharge testing Power resistor substitution Real-time load simulation
Supply Ground Isolated DC/DC Converter Control Strobe (CS) Clock (CLK) Serial Data (SDI) Buffers/ Opto Isolators Converter Amplifier/ Current Sensor Fault Error Detection -Load Input -Load Input
+Load Input +Load Input
Power Supply
Under Test
Latch Data (LD)
Figure Simplified Schematic
DATEL, Inc., Mansfield, 02048 (USA) Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 Email: sales@datel.com Internet: www.datel.com
DTL5A-LC
Watt
Serial-Input
Electronic
Loads
Performance Specifications Ordering Guide
Compliance Voltage (Volts)
Output
Model DTL5A-LC Loading Curent (Amperes) Current Resolution Accuracy (%FSR) Offset Error (%FSR) ±0.05 Gain Error (mA) Gain Error Setting) ±0.25 Package (Case Pinout)
Typical +25°C under nominal line voltage full-load conditions unless otherwise noted.
Mechanical Specifications
Case
Part Number Structure
Prefix: DATEL product
A-Series High Reliability Compliance: Voltage Range DTL5A-LC model only
#4-40 CLEAR THRU (TYP
Metal Shell
Aluminum Header
Voltage Range/Current: 50V,
.±0.001 Pins
±0.001 Pins
±0.20
warranty period year
2.02 Max. 1.800 1.640
Temperature Derating
2.02 Max.
1.200 1.000 .800 .600 .400
Load Capacity Watts
1.640
.200
BOTTOM VIEW
(Label/pin side)
Base Plate Temperature
Note: DTL5A-LC electronic load packaging been designed allow with external heatsinking high wattage applications. DTL5A-LC dissipate Watts with external cooling (heatsink fan) observing base plate temperature requirements above. loads capable dissipating Watts room temperature without external cooling. devices also connected parallel additional loading capability.
Connections
Function Fault Ground Volts Supply Latch Data (LD) Serial Data (SDI) Clock (CLK) Control Strobe (CS) Function Load Input Load Input Load Input Load Input
.220
Watt Serial-Input Electronic Loads
DTL5A-LC
Performance/Functional Specifications
Typical +25°C under nominal line voltage full-load conditions unless noted.
Input
Digital Inputs (pins
Min.
Typ.
Max.
Units
Volts Volts
Timing
Refer timing diagram:
Min.
Typ.
Max.
Units
µsec µsec µsec µsec µsec µsec µsec µsec
-0.6 Ordering Guide ±0.025 ±0.05 ±0.3 Ordering Guide +4.75 +5.0 +110 +5.25 +150
Output
Loading Current Current Resolution Offset Error Gain Error DTL5A-LC Compliance Voltage Range Output Impedance
Mohm usec A/µsec Volts
Dynamic Characteristics
Dynamic Loading Settling Time (Full Scale Step) Slew Rate
Absolute Maximum Ratings These stress ratings. Exposure devices these conditions adversely affect long-term reliability. Proper operation under conditions other than those listed Performance/Functional Specifications Table implied.
Power
Volts Supply (pin Current (pin Power Supply Voltage (pin3): Digital Input Voltage (pins 4,5,6,7): Output Reverse-Polarity Protection: Output Overvoltage Protection: Storage Temperature +105 10,000 0.52" 12.7mm) 6-sided Tin-plated Steel Shell Heat-sink side: Aluminum Brass, solder coated Through-hole spacer, #4-40 clearance ounces grams) Volts Volts Mohm inches Lead Temperature (soldering, sec.) feet +300°C Volts Volts protection protection +105°C
Environmental
Operating Ambient Temperature where derating required. Natural Convection, vertical mount Storage Temperature Humidity (Non-condensing) Altitude Above Level
Physical
Dimensions Length Shielding Case Material Material Isolation, Load Input Ground Isolation, case Isolation, resistance Mounting Weight
DTL5A-LC
Overview
Watt
Serial-Input
Electronic
Loads
Software:
Language
DTL5A-LC serial-input controlled current sink. Powered single power supply, DTL5A-LC provides compliance voltage range from Volts Volts, with loading currents Amperes. Refer Table basic "Mapping Serial-Input Data Word Loading Current devices transfer function. Utilizing external heatsinking, device handles loads watts with base-plate temperature 25°C, derating thereafter (only Watts without external heatsink/cooling. Refer "Temperature Derating" curve figure herein that illustrates load capacity Watts, function base plate temperature. Device Under Test (DUT) outputs hooked +Load Input (pins Load Input (pins input serial data stream (Pin clock (Pin opto-isolated internally. These isolated inputs gated through 12-bit serial input D/A, where input word latched using Latch Data input (Pin Fault ouput (Pin indicates excessive heat operation outside compliance range. Operation Overview Programming easily accomplished utilizing four lines parallel digital port. four digital outputs will used control Control Strobe (CS, pin7), Latch Data (LD, Serial Data (SDI, Clock (CLK, functions DTL5A-LC Series. Initialization Initialization device accomplished first setting Control Strobe, Clock Latch Data pins Logic High ("1") state. Serial Data state this time "Don't Care". Next, bring Control Strobe Logic ("0") state. load prepared accept serial input word. Input Serial Data After initialization, serial-input data word representing desired load current input load. This accomplished with data stream that begins with Most Significant (MSB). With present Serial Data (pin toggle Clock (pin through High-Low-High state sequence. Similarly, proceed from bits, toggling Clock (pin through High-Low-High state each bit. timing specifications shown "Timing Diagram" should observed transitioning clock states. Latching Data Word Upon entering final, Least Significant (LSB), serial-input data word latched, bringing Control Strobe (pin high then toggling Latch Data (pin through High-Low-High state sequence.
following steps describe typical timing sequence when using four lines parallel digital port programming language such Using bits 8-bit port, assign BIT_0 (LSB) Control Strobe (CS, BIT_1 Latch Data (LD, BIT_2 Serial Data (SDI, BIT_3 Clock (CLK, Initialize with Latch Data, Clock, Control Strobe HIGH. BIT_0 BIT_1 BIT_2 (don't care), Place Control Strobe LOW. BIT_0 Place (MSB) Data Word into Serial Data BIT_2 Toggle Clock HIGH-LOW-HIGH BIT_3 =1-to-0-to-1 Place Data Word into Serial Data BIT_2 Toggle Clock High-LOW-HIGH. BIT_3 1-to-0-to-1 REPEAT this process (steps remaining data bits (D9-D0). Control Strobe High. Bit_0 Toggle Latch Data High-LOW-HIGH BIT_1 1-to-0-to-1
Serial-Input Data Word
1111 1100 1000 0111 0100 0010 0000 0000 1111 0000 0000 1111 0000 0000 0000 1111 0000 0000 1111 0000 0000 0001 0000
Load Current (Amperes)
DTL5A-LC 1.9995 1.5000 1.000 0.9995 0.5000 0.2500 0.0005 0.000
Mapping Serial-Input Data Word Load Current
Watt
Serial-Input
Electronic
Loads
DTL5A-LC
tcss
tcsh
tld1
tld2
tldw
Timing Diagram
Load Regulation
DTL5A-LC
Quality Reliability
Serial-Input
Electronic
Load
DTL5A-LC first Electronic Loads emerge from DATEL's new, company-wide approach designing manufacturing most reliable power products available. five-pronged program draws Quality Assurance function into aspects new-product design, development, characterization, qualification manufacturing. Design Reliability Design Reliability woven throughout multi-phased, new-productdevelopment process. Design-for-reliability practices fully documented begin early new-product development cycle with following goals: work from approved components/vendors list ensuring reliable components rigorous qualification components. design with safety margins adhering strict derating guidelines performing theoretical worst-case analyses. locate potential design weaknesses early product-development cycle using extensive HALT (Highly Accelerated Life Testing). prove that early design improvements effective employing thorough FRACA (Failure Reporting Analysis Corrective Action) system. HALT Testing goal accelerated-stress techniques used DATEL force device maturity, short period time, exposing devices excessive levels "every stimulus potential value." HALT (Highly Accelerated Life Testing) repeatedly during design early manufacturing phases detect potential electrical mechanical design weaknesses that could result possible future field failures. During HALT, prototype pre-production electronic loads subjected progressively higher stress levels induced thermal cycling, rate temperature change, vibration, power cycling, product-specific stresses (such voltage variation) combined environments. stresses meant simulate field environments expose weaknesses product's electro/mechanical design and/or assembly processes. goal HALT make products fail that device weaknesses analyzed strengthened appropriate. Applied stresses continually stepped until products eventually fail. After corrective actions and/or design changes, stresses
Typical HALT Profile
stepped again cycle repeated until "fundamental limit technology" determined. DATEL invested Qualmark OVS-1 HALT tester capable applying voltage temperature extremes well 6-axis, linear rotational, random vibration. typical HALT profile (shown above) consists thermal cycling (-55 +125°C, 30°C/minute) simultaneous, gradually increasing, random longitudinal rotational vibration 20G's with load cycling applied-voltage extremes added desired. Many devices DATEL's A-Series could made fail prior reaching either limits HALT chamber some previously known physical limit device. also HALT chamber ability rapidly cool devices verify their "cold-start" capabilities. Qualification each product, electrical performance verified comprehensive characterization process long-term reliability confirmed rigorous qualification procedure. qual procedure includes such strenuous tests thermal shock hour life. Qual testing summarized below.
Qualification Testing
Qualification Test HALT High Temperature Storage Thermal Shock Temperature/Humidity Lead Integrity Life Test Marking Permanency Point Electrical Tests
Interim electrical test hours.
Method/Comments DATEL in-house procedure Max. rated temp., 1,000 hours cycles, +125°C +85°C, humidity, hours DATEL in-house procedure +70°C, hours* DATEL in-house procedure product specification
In-Line Process Controls Screening combination statistical sampling 100% inspection techniques keeps assembly line under constant control. Parameters such solder-paste thickness, component placement, cleanliness, etc. statistically sampled, charted fine tuned necessary. Visual inspections performed trained operators after pick-and-place, soldering cleaning operations. Units 100% electrically tested prior potting. devices temperature cycled, burned-in, hi-pot tested final-electrical tested prior external visual examination, packing shipping. Rapid Response Problems DATEL employs outstanding corrective-action system immediately address detected shortcomings either products processes. Whenever assembly, quality engineering personnel spot product/ process problem, product returned with potential defect, immediately perform detailed failure analysis and, necessary, undertake corrective actions. Over time, this system helped refine assembly operation yield lowest product defect rates industry.
Test Time (minutes)
9001
INNOVATION EXCELLENCE
DS-DTL005 Rev_A
1/2000
DATEL, Inc. Cabot Boulevard, Mansfield, 02048-1151 Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356 Internet: www.datel.com Email: sales@datel.com Data Sheet Back: (508) 261-2857
DATEL DATEL DATEL DATEL
(UK) LTD. Tadley, England Tel: (01256)-880444 S.A.R.L. Montigny Bretonneux, France Tel: 01-34-60-01-01 GmbH Germany Tel: 89-544334-0 Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-354-2025
DATEL makes representation that products circuits described herein, other technical information contained herein, will infringe upon existing future patent rights. descriptions contained herein imply granting licenses make, use, sell equipment constructed accordance therewith. Specifications subject change without notice. DATEL logo registered DATEL, Inc. trademark.

INNOVATION EXCELLENCE DTL5A-LC Watt, Serial-Input Electronic

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