DTL2A-LC Datasheet, PDF (1/5 Pages) List of Unclassifed Manufacturers – 100 Watt, Digitally Programmable Low-Voltage, Electronic Loads

NEW
®
®
INNOVATION and EXCELLENCE
DTL Series
DTL2A-LC Model
100 Watt, Digitally Programmable
Low-Voltage, Electronic Loads
Features
I 12-bit, optically isolated (500Vdc),
CMOS/TTL-compatible serial input
I Output load voltages as low as 0.6 Volts
I Output current 0-20A in 5mA increments
I Output power to 100 Watts
I 10MΩ minimum output impedance
I ±10mA offset error; ±0.4% gain error
I 100µsec full-scale step response
I Operate in parallel for higher power
I Miniature, 2" x 2" metal package
Applications
I Static/dynamic power-supply burn-in
I Power-supply test and characterization
I Battery capacity testing
I Current-source testing
I Capacitor discharge testing
I Real-time load simulation
DATEL’s new DTL2A-LC is an optically isolated, digitally programmable, serial-
input electronic load designed for use in burn-in, characterization and test of today’s
low-voltage power supplies and power components. The DTL2A-LC is essentially a
digitally controlled current source that can sink currents from 0 to 20 Amps, at loading
voltages as low as 0.6 Volts, up to a maximum power of 100 Watts.
The DTL2A-LC accepts a serialized, 12-bit, CMOS/TTL-compatible, digital input
word easily supplied by any standard digital I/O card. The DTL2A-LC optically isolates
(500Vdc) the digital 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 min. output
impedance), voltage-controlled current source. One LSB (least significant bit) of the
D/A corresponds to a 5mA increment (0.025% of 20A) in load current. The DTL2A-LC
guarantees a ±10mA max. offset error and a ±0.4% max. gain error. It has an impressive
full-scale step response time of 100µsec and can be updated at rates to 20kHz.
The DTL2A-LC operates from a single +5V and draws a mere 150mA. It 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 heat-sink attachment.
When operating with constant currents up to 20 Amps, the DTL2A-LC has an
output compliance voltage of 0.6 to 50 Volts. Should the output/load voltage drop below
the 0.6V minimum required for proper biasing, an internal monitoring circuit activates the
DTL2A-LC's output Fault line.
DATEL’s electronic loads and their companion controller boards and software are
outstanding building-block components for power-supply (AC/DC and DC/DC convert-
ers) 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,
impressively accurate systems.
CONTROL STROBE (CS)
INPUT
BUFFERS
OPTO
ISOLATORS
CLOCK (CLK)
SERIAL DATA INPUT (SDI)
DATA
LATCH
LATCH DATA (LD)
12-BIT
D/A
AMPLIFIER
AND
CURRENT
SENSOR
+5V SUPPLY
GROUND
ISOLATED
DC/DC
CONVERTER
UNDERVOLTAGE
DETECTION
Figure 1. Simplified Schematic
+LOAD
+LOAD
–LOAD
–LOAD
POWER DEVICE
UNDER TEST
FAULT
DATEL, Inc., Mansfield, MA 02048 (USA) · Tel: [phone] Fax: [phone] · Email: [e-mail] · Internet: www.datel.com