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DTL3A

Description
DIGITALLY PROGRAMMABLE, 2A/200V 100WATT, ELECTRONIC LOADS
File Size197KB,5 Pages
ManufacturerETC
Download Datasheet View All

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DTL3A Overview

DIGITALLY PROGRAMMABLE, 2A/200V 100WATT, ELECTRONIC LOADS

NEW
®
®
INNOVATION and EXCELLENCE
DTL Series
DTL3A Model
Digitally Programmable, 2A/200V
100 Watt, Electronic Loads
Features
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12-bit, optically isolated (500Vdc),
CMOS/TTL-compatible serial input
0-2 Amp output in 500µA increments
Output voltage to 200 Volts
Output power to 100 Watts
10MΩ minimum output impedance
±500µA offset error; ±0.1% gain error
100µsec full-scale step response
Update rates to 20kHz
Operate in parallel for higher power
Miniature, 2" x 2" metal package
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Applications
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Static/dynamic power-supply burn-in
Power-supply test and characterization
Battery capacity testing
Current-source testing
Capacitor discharge testing
Real-time load simulation
DATEL’s new DTL3A is a digitally controlled, optically isolated, serial-input elec-
tronic load that offers high compliance voltage and unprecedented control over low-
level currents. The DTL3A is essentially a computer controlled current source that
sinks currents from 0 to 2 Amps, at loading voltages from 2.5 to 200 Volts, up to a
maximum power of 100 Watts. The DTL3A accepts a serialized, 12-bit, CMOS/TTL
digital input word, optically isolates (500Vdc) the data, latches it, and presents it to an
on-board, 12-bit, digital-to-analog (D/A) converter. The D/A output drives a near-ideal
(10MΩ output impedance), voltage-controlled current source.
One LSB (least significant bit) of the D/A corresponds to a mere 500µA (0.025% of
2A) of load current. Combined with the DTL3A’s ±500µA max. offset error and ±0.1%
max. gain error, this precise digital control gives users extraordinary command over
the generation of low-level load currents. A 100mA current, for example, is guaranteed
to have ±1mA accuracy over all specified load-voltage conditions.
The DTL3A has impressive speed performance. Digital update rates to 20kHz
are possible, and settling time for a full 2A step is 100µsec. The unit is housed in a
thermally efficient, 2" x 2" x 0.5" metal package that has an aluminum baseplate with
through-hole spacers for easy pcb mounting and/or external heat-sink attachment.
The DTL-3A has an output compliance-voltage requirement 2.5 to 200V. Should
the output/load voltage drop below the 2.5V minimum required for proper biasing,
an internal monitoring circuit activates the DTL3A's output Fault line. See DATEL’s
DTL2A-LC for compliance voltages as low as 0.6V.
DATEL’s electronic loads, controller boards and companion software are outstand-
ing building-block components for power-supply (AC/DC and DC/DC) and power-
component (diodes, FET’s, etc.) burn-in and test systems. They are an extremely
reliable, cost-effective solution that enables you to quickly configure flexible, impres-
sively accurate systems.
INPUT
BUFFERS
CONTROL STROBE (CS)
OPTO
ISOLATORS
+LOAD
CLOCK (CLK)
DATA
LATCH
12-BIT
D/A
AMPLIFIER
AND
CURRENT
SENSOR
–LOAD
LATCH DATA (LD)
–LOAD
+LOAD
POWER DEVICE
UNDER TEST
SERIAL DATA INPUT (SDI)
+5V SUPPLY
GROUND
ISOLATED
DC/DC
CONVERTER
UNDERVOLTAGE
DETECTION
FAULT
Figure 1. Simplified Schematic
DATEL, Inc., Mansfield, MA 02048 (USA) · Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 · Email: sales@datel.com · Internet: www.datel.com
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