DTL4A Datasheet, PDF (1/5 Pages) Murata Manufacturing Co., Ltd. – Digitally Programmable, 10A/150V 100 Watt, Electronic Loads

NEW
®
®
INNOVATION and EXCELLENCE
DTL Series
DTL4A Model
Digitally Programmable, 10A/150V
100 Watt, Electronic Loads
Features
■ 12-bit, optically isolated (500Vdc),
CMOS/TTL-compatible serial input
■ 0-10 Amp output in 2.44mA increments
■ 10MΩ minimum output impedance
■ Output voltage to 150 Volts
■ Output power to 100 Watts
■ ±3mA 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
Applications
■ 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 DTL4A is an optically isolated, digitally programmable, serial-input,
electronic load. It is essentially a digitally controlled current source that can sink
currents from 0 to 10 Amps, at loading voltages from 2.5 to 150 Volts, up to a maximum
power of 100 Watts. The DTL4A is packaged in a thermally ef cient, 2" x 2" x 0.5"
metal package that incorporates an aluminum baseplate with through-hole spacers
for easy pcb mounting and/or external heat-sink attachment.
The DTL4A accepts a serialized, 12-bit, CMOS/TTL-compatible, digital input word
easily generated by any standard digital I/O card. The DTL4A buffers and then
optically isolates (500Vdc) the digital input data before storing it in a register and
presenting it to an on-board, 12-bit, digital-to-analog (D/A) converter. The D/A output
drives a near-ideal (10MΩ minimum output impedance), voltage-controlled current
source. One LSB (least signi cant bit) of the D/A converter corresponds to a 2.4mA
increment (0.024% of 10A) in load current.
The DTL4A features a max. ±3mA offset error and a max. ±0.1% gain error. It
has an impressive full-scale step response time of 100µsec and can be operated
dynamically at update rates up to 20kHz. Powered by a single +5V supply, the DTL4A
draws a mere 150mA (maximum).
While operating in the constant-current mode up to 10 Amps (100W max. power),
the output compliance voltage of the DTL4A is 2.5 to 150 Volts. Should the output/load
voltage drop below the 2.5V minimum required for proper biasing, an internal monitoring
circuit activates the DTL4A's output Fault line. See DATEL’s DTL2A-LC for compliance
voltages as low as 0.6V.
DTL4A’s 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 an extremely reliable, cost-effective solution that enables you to quickly
con gure 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., Mans eld, MA 02048 (USA) · Tel: [phone] Fax: [phone] · Email: [e-mail] · Internet: www.datel.com