DTL3A Просмотр технического описания (PDF) - DATEL Data Acquisition products

Номер в каталоге

Компоненты Описание

производитель

DTL3A

Digitally Programmable, 2A/200V 100 Watt, Electronic Loads

DATEL Data Acquisition products  

NEW

®

®

INNOVATION and EXCELLENCE

DTL Series

DTL3A Model

Digitally Programmable, 2A/200V

100 Watt, Electronic Loads

Features

I 12-bit, optically isolated (500Vdc),

CMOS/TTL-compatible serial input

I 0-2 Amp output in 500µA increments

I Output voltage to 200 Volts

I Output power to 100 Watts

I 10MΩ minimum output impedance

I ±500µA offset error; ±0.1% gain error

I 100µsec full-scale step response

I Update rates to 20kHz

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 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.

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: (508)339-3000, (800)233-2765 Fax: (508)339-6356 · Email: sales@datel.com · Internet: www.datel.com

Share Link: