DTL22A Datasheet, PDF (1/4 Pages) List of Unclassifed Manufacturers – Voltage-Controlled, 20 Amp 100 Watt, Electronic Loads

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INNOVATION and EXCELLENCE
DTL Series
DTL22A Model
Voltage-Controlled, 20 Amp
100 Watt, Electronic Loads
Features
■ _{0-10V input/control voltage}
■ _{0-20A output/load current}
■ _{2.5-50V output compliance voltage}
■ _{0-100W output/load power}
■ _{10MΩ output impedance}
■ _{500Vdc isolation}
■ _{±1% accuracy under all conditions}
■ _{200µsec full-scale step response}
■ _{2" x 2", shielded metal package}
■ _{Operate in parallel for higher power}
Applications
■ Power-supply test and characterization
■ Static/dynamic power-supply burn-in
■ Power-resistor substitution
■ Real-time load simulation
■ Capacitor discharge testing
The DTL22A is an isolated (500Vdc), near-ideal (ZIN = ZOUT ≥ 10MΩ), analog/
voltage-controlled current sink. Its 0-20A output/load current is straightforwardly
"programmed" by applying a 0-10V input. The control signal can be generated by
circuits as simple as the wiper of a trimpot or as sophisticated as programmable logic
controllers (PLC’s) or analog-output computer I/O boards (D/A boards). The DTL22A
supports any combination of IOUT = 0-20 Amps and VOUT = 2.5-50 Volts. Its thermally
efficient, metal package, when properly heat sunk, can dissipate output/load power
up to 100 Watts.
The easy-to-use DTL22A is an excellent building block for low-cost, fully flexible,
power-supply (AC/DC or DC/DC) or power-component (MOSFET’s, diodes, etc.) test
and burn-in applications. It is accurate (±5mA offset error, ±1% overall accuracy),
fast (200µsec full-scale step response), and capable of impressive resolution. If it is
controlled with a 12-bit, 0-10V D/A converter, for example, one LSB (least significant
bit) of the D/A corresponds to a 5mA change in the DTL22A’s output/load current.
The DTL22A is packaged in a small (2" x 2" x 0.5"), thermally efficient metal
package incorporating an aluminum baseplate with threaded inserts. It is powered by
a single +5V supply and draws a mere 150mA.
The DTL22A has an output compliance voltage of 2.5-50 Volts. Should the
output/load voltage drop below the 2.5V required for proper biasing, an internal
monitoring circuit activates the DTL22A’s output Fault line. See DATEL’s DTL22A-LC
for compliance voltages as low as 0.6V.
The DTL22A and other electronic loads, controller boards, and software from
DATEL are outstanding building-block components for power-supply burn-in and test
systems. They are extremely reliable, cost-effective solutions that enable you to
quickly configure impressively accurate systems.
+5 VOLT
SUPPLY
+5 VOLT
RETURN
ISOLATED
DC/DC
CONVERTER
ISOLATED
DC/DC
CONVERTER
CONTROL
VOLTAGE IN (+)
CONTROL
VOLTAGE IN (–)
FAULT
+
–
BUFFER
AMPLIFIER
AMPLIFIER
CURRENT
DRIVER
ISOLATION
AMPLIFIER
ERROR
DETECTION
Figure 1. Simplified Schematic
+LOAD
+LOAD
–LOAD
–LOAD
DATEL, Inc., Mansfield, MA 02048 (USA) · Tel: [phone] Fax: [phone] · Email: [e-mail] · Internet: www.datel.com