Atec 6310A User Manual

PROGRAMMABLE DC ELECTRONIC LOAD

MODEL 6310A SERIES

Th e Ch roma 6310A se r ies Pro g ramma b le

DC Electronic Load is ideal for the test and

evalu a t i o n of multi-o u t p u t AC /DC po w er

supplies, D C/D C conve rte rs, charg ers and

power electronic components. It is designed

for applications in research and development,

pr oduct ion, and in c omin g inspe ction. Th e

system is configured by plug gin g the user

se l e c t a ble load modules into the system

main frame. The u ser inter faces includ e an

ergonomically designed user friendly keypad

on the front panel and the following computer

interfaces: RS-232, USB or GPIB.

The 6310A series offers 8 different modules

with power ratings fro m 100 watt s to 1,200

watts, c urr ent rat ing s from 0.5mA to 240A,

and voltage ratings from 0.5mV to 500V. The

loads can b e operat ed i n consta nt c urren t,

constant voltage, constant power and constant

resistance and may be placed in parallel for

increased current and power.

programmable parameters include: slew rate,

load level, duration and conducting voltage. In

addition, up to 100 sets of system operating

status can be stored in EEPROM and recalled

instantly for automated testing applications.

Rea l ti m e me asur e m e nt of vol t a g e an d

current are integrated into each 6310A load

module using a 16-bit precision measurement

circuit. The user can perform on line voltage

measurements and adjustments or simulate

short circuit test using the user friendly keypad

on the fron t pan el. A ddit ion all y, the 6310A

series offers an optional remote controller for

automated production lines.

The 6310A series has a self-diagnosis routines

to maintain instrument performance. It also

provides OP, OC, OV, OT, and reverse polarity

protection to guarantee quality and reliability

for even in the most demanding engineering

testing and ATE applications.

Programmable DC Electronic Load

MODEL 6310A SERIES

Key Features:

■ Max Power: 200W, 100W×2(Dual),

30W & 250W, 300W, 600W, 1200W

■ Wide range 0~500V operating voltage

■ Compatibility between 6310 and 6310A

■ Up to eight channels in one mainframe,

for testing multiple output SMPS

■ Parallel load modules up to 1200W for

high current and power applications

■ Synchronization with multiple loads

■ Flexible CC, CR, CP and CV operation

modes

■ Dynamic loading with speeds up to 20kHz

■ Fast response of 0.32mA/µs ~ 10A/µs

slew rate

■ Minimum input resistance allows the load

to sink high current at low voltages

■ Real time power supply load transient

response simulation and output

measurements

■ User programmable 100 sequences. Front

panel input status for user-friendly operation

■ High/Low limits of testing parameters to

test GO/NG

■ Digital I/O control

■ Over current protection (OCP) testing

function

■ 16-bit precision voltage and current

measurement with dual-range

■ Remote sensing capability

■ Short circuit test

■ Self-test at power-on

■ Full Protection: OV, OC, OP, OT and

reverse protection

■ USB, GPIB & RS-232 interfaces

The 6310A series can simulate a wide range of

dynamic loading applications. The waveforms

USB

GPIB

RS-232

USB

INTERFACE

GPIB

INTERFACE

RS232

INTERFACE

Series Interface

DIGITAL I/O

CONTROL

Versatile system Configuration

Chro ma 6310A Progr ammable Electr onic Load integrates

mi c ropr o c esso r ca pabil i ties int o each loa d m o d ule and

mainframe to provide simple and accurate parallel operation to

optimize the speed and control among multiple load modules.

All load modules may be configured to work synchronously, to

test multiple outputs simultaneously, thus simulating real life

applications.

6310A System Block Diagram

multiple output switching power supplies and multiple DC-DC converters.

There are also higher wattage modules that may be mixed and matched

for an even more versatile system. Additionally, the GO/NG output port

is useful for UUT's pass/fail testing on an automated production line. All

modules on the 6314A/6312A mainframe share a common GPIB address

to synchronize and speed up the control of the load modules and the read-

back of data.

Compatibility WitH 6310 series

The 6310A series load modules will be compatible with the

6310 series mainframes (6312/6314). In addition, the remote

control commands will be compatible between the 6310 and

the 6310A series without needing to r e-writ in g any remote

control programs.

module load design

The Chroma 6314A 1200W and 6312A 600W electronic load

mainfram es a ccept the user-ins tallabl e 6310A series load

modules for easy system configuration and will mount in a

19" instrument rack. The 6314A holds up to four 63102A load

modules, which will result in an 8-channel 100W/channel load

with standard front-panel inputs. This makes it ideal for testing

appliCation of speCifiC load simulation

The 6310A load modules operate in constant current, constant voltage,

constant power or const ant r esistance to satisfy a wide range of test

requirements. For example, the test of a battery charger can be simulated

easily by setting the load to operate in constant voltage.

Constant Current Mode

Constant Resistance Mode

Constant Voltage Mode

Ea ch lo ad mo dul e is de sig ned with st ate-of-the-art t echn olo gy and

connects all the power MOSFET devices in parallel to insure high accuracy

load c ont rol with a mini mum d rift of les s than 0.1%+0.1%F.S. of the

current setting. Chroma's use of FET technology provides minimum input

resistance and enables the load to sink high current even at very low

voltages. For example, the model 63103A is capable of sinking 60A at 1V,

and well-suited for testing the new 3.3V low voltage power supplies. Low

voltage operation, down to zero volts, is possible at reduced current levels.

The 6310A load module uses a photo coupler for isolation between the

Constant Power Mode

output and control sections, thus each load is isolated and floating.

The user can use multiple load modules independently to test

multi-output power supplies, or parallel them for high power testing

applications.

Model 63103A Input Characteristics

80V

70V

60V

50V

40V

30V

Voltage

20V

10V

3.75A 10A 20A 30A 40A 60A50A

Ampere

parallel Control

The 6310A provides parallel control, which enables high power

testing when a single module cannot meet the requirement of high

power applications. Two or more load modules can be paralleled

together to achieve the desired loading. The 6310A comes with

RS-232 as standard for remote contr ol and automated testing

appl ica tions. T he U SB and GPIB inter fac es are availa ble as

options.

In addition, the 6310A, through its synchronized controls, provides

an efficient solution for testing single output AC to DC or DC to DC

converters by controlling multiple loads. The 6310A provides the

capability to test up to 8 UUTs at a time.

poWerful measurements

Low Voltage Characteristics (Typical)

Model 63101A/63102A/63103A/63106A/63112A

240A

220A

200A

180A

160A

140A

120A

100A

80A

60A

40A

20A

0 0.2V 0.4V 0.6V 0.8V 1.0V 1.2V

Note: All specifications are measured at load input terminals. (Ambient Temperature of +25°C)

63112A

63106A

63103A

63101A

63102A

dynamiC loading and Control

Modern electronic devices operate at very high speeds and require

fast dynamic operation of their power providing components. To

satisfy these testing applications, the 6310A loads offer high speed,

programmable dynamic load simulation and control capability. The

figure below shows the programmable parameters of the 6310A

modules:

Ea ch 6310A load m odul e has an int egra ted 16-b it precis ion

A/D conve rte r for voltage measu rem ent wit h an a ccu rac y of

0.025%+0.025% of full scale. The built-in resistive load current

sensing circuit is capable of measuring current with an accuracy

of 0.05%+0.05% of full scale. Also, short circuit can be simulated.

All measurements are done using remote sensing to eliminate

any error due to voltage drops along the measurement path. The

user can also select from a complete set of voltage and current

measurements.

oCp test

Modern switching power supplies are designed with over current

protection (OCP) circuitry; therefore, it is important to test the

OCP circuitry to make sure it is functioning within its designed

specifications. The 6310A series provides an easy and fast solution

for this testing.

By simply choosing the channel and setting the OCP parameters

(start current, end current, step current and dwell time) from the

front panel, the 6310A series provides a fast and easy OCP testing

soluti on. T he 6310A serie s will automat icall y dete ct t he O CP

point, making it an ideal solution for design verification as well as

production line testing.

Amplitude

Load 1

rise rate fall rate

Load 2

The programmable slew rate makes the simulation of transient

loa d change demanded by real life applications possible. Th e

6310A intern al waveform gen er ator is cap ab le of p roducing a

maximum slew rate at 10A/µs, and dynamic cycling up to 20kHz.

It's dedicated remote load sense and control circuit guarantee

minimum waveform distortion during continuous load changes.

▃

Start Current

UUT Output Voltage

Loading Current

▃

Dwell Time▃ Step Current

▃

End Current

Time

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