Atec Agilent-6643A User Manual

This series of 200 W linear-regulated
DC power supplies is designed to
maximize the throughput of DUTs
through the manufacturing test
process with fast up and down
programming time.

Valuable assemblies can be
destroyed by a minor component
failure that can allow a surge of
voltage or current to flow to the
DUT. Fast protection features,
including fast crowbar, mode
crossover protection, and the ability
to connect the protection circuitry
of multiple power supplies can
increase production yield.

Programming of the DC output and
the protection features can be done
either from the front panel or using
industry standard SCPI commands,
via the GPIB. Using the serial link,
up to 16 power supplies can be
connected through one GPIB
address. Test system integration
can be further simplified be using
the VXIPlug&Play drivers. The out­put voltage and current can also be
controlled with analog signals. This
is helpful for certain types of noisy
environments, and also immediate
reactions to process changes.

Lab bench use is enhanced by the
fan speed control, which helps to
minimize the acoustic noise.

High Performance DC Power Supplies speed and accuracy for test optimization

Specifications

(at 0˚to 55˚C unless
otherwise specified)

More detailed specifications at

www.agilent.com/find/6640

38

Fast, low-noise outputs
Analog control of output voltage and current
Fan-speed control to minimize acoustic noise
Parallel and series connections of multiple units
Built-in measurements and advanced programmable features
Protection features to ensure DUT safety

6641A - 6645A

Single-Output

200 W GPIB

6641A 6642A 6643A 6644A 6645A

Number of outputs 11111
GPIB Yes Yes Yes Yes Yes
Output ratings

Output voltage 0 to 8 V 0 to 20 V 0 to 35 V 0 to 60 V 0 to 120 V
Output current (40° C) 0 to 20 A 0 to 10 A 0 to 6 A 0 to 3.5 A 0 to 1.5 A
Maximum current (50° C/55° C) 18 A/17 A 9 A/8.5 A 5.4 A/5.1 A 3.2 A/3 A 1.4 A/1.3 A
Programming accuracy at 25°C ±5°C
Voltage 0.06% + 5 mV 10 mV 15 mV 26 mV 51 mV
Current 0.15% + 26 mA 13 mA 6.7 mA 4.1 mA 1.7 mA

Ripple and noise

from 20 Hz to 20 MHz
Voltage rms 300 µV 300 µV 400 µV 500 µV 700 µV

peak-peak 3 mV 3 mV 4 mV 5 mV 7 mV
Current rms 10 mA 5 mA 3 mA 1.5 mA 1 mA
Readback accuracy at 25°C ±5°C

(percent of reading plus fixed)
Voltage 0.07% + 6 mV 15 mV 25 mV 40 mV 80 mV
+Current 0.15% + 18 mA 9.1 mA 5 mA 3 mA 1.3 mA

-Current 0.35% + 40 mA 20 mA 12 mA 6.8 mA 2.9 mA

Load regulation

Voltage 1 mV 2 mV 3 mV 4 mV 5 mV
Current 1 mA 0.5 mA 0.25 mA 0.25 mA 0.25 mA

Line regualtion

Voltage 0.5 mV 0.5 mV 1 mV 1mV 2 mV
Current 1 mA 0.5 mA 0.25 mA 0.25 mA 0.25 mA
Transient response time Less than 100 µs for the output voltage to recover to its previous level (within 0.1% of

the voltage rating of the supply or 20 mV, whichever is greater) following any step change in load current of up to
50% of rated current

Supplemental Characteristics (Non-warranted characteristics determined by design and

useful in applying the product)

Average resolution

Voltage 2 mV 5 mV 10 mV 15 mV 30 mV
Current 6 mA 3 mA 2 mA 1.2 mA 0.5 mA
OVP 13 mV 30 mV 54 mV 93 mV 190 mV
OVP accuracy 160 mV 400 mV 700 mV 1.2 V 2.4 V

39

Single-Output: 200 W GPIB (Continued)

Specifications

(at 0˚to 55˚C unless
otherwise specified)

6641A- 6643A- 6644A- 6645A- 6645A­J04 J11 J09 J05 J06

Special Order Special Order Special Order Special Order Special Order
Option Option Option Option Option

Number of Outputs 11111
GPIB Yes Yes Yes Yes Yes
Output ratings

Output voltage 13 V 40 V 70 V 150 V 170 V
Output current (40˚C) 15.3 A 5 A 3 A 1.2 A 1 A
Maximum current (50˚C/55˚C) 13.77 A/13 A 4.5 A/4.25 A 2.7 A/2.55 A 1.08 A/1.02 A 0.9 A/0.85 A

Programming accuracy

at 25˚C ±5˚C

Voltage 0.06% + 8.5 mV 17.5 mV 31 mV 65 mV 74 mV
Current 0.15% + 21 mA 6.7 mA 4.1 mA 1.7 mA 1.7 mA

Ripple and noise

from 20 Hz to 20 MHz
Voltage rms 300 µV 450 µV 600 µV 900 µV 1 mV

peak-peak 3 mV 3.5 mV 6 mV 9 mV 10 mV

Current rms 8 mA 3 mA 1.5 mA 1 mA 1 mA

Readback accuracy at 25˚C ±5˚C
(percent of reading plus fixed)

Voltage 0.07% + 10 mV 30 mV 47 mV 100 mV 140 mV
+Current 0.15% + 15 mA 5 mA 3 mA 1.3 mA 1.3 mA
–Current 0.35% + 40 mA 12 mA 6.8 mA 2.9 mA 2.9 mA

Load regulation

Voltage 1 mV 3 mV 4.5 mV 7 mV 8 mV
Current 1 mA 0.25 mA 0.25 mA 0.25 mA 0.25 mA

Line regulation

Voltage 0.5 mV 1 mV 1.5 mV 2.5 mV 3 mV
Current 1 mA 0.25 mA 0.25 mA 0.25 mA 0.25 mA
Transient response time Less than 100 µs for the output voltage to recover to its previous level (within 0.1% of

the voltage rating of the supply or 20 mV, whichever is greater) following any step change in load current of up to
50% of rated current

Supplemental Characteristics (Non-warranted characteristics determined by design and

useful in applying the product)

Average resolution

Voltage 3.5 mV 12 mV 1.4 mV 37.5 mV 42.5 mV
Current 5 mA 2 mA 1.2 mA 0.5 mA 0.5 mA
OVP 23 mV 62 mV 110 mV 250 mV 285 mV
OVP accuracy 260 mV 800 mV 1.5 mV 3 V 3.4 V

More detailed specifications at

www.agilent.com/find/6640

High Performance DC Power Supplies speed and accuracy for test optimization

Application Notes:

10 Practical Tips You Need to
Know About Your Power Products

5965-8239E

10 Hints for Using Your Power Supply
to Decrease Test Time

5968-6359E

Understanding Linear Power Supply
Operation (AN1554)

5989-2291EN

Modern Connectivity ­Using USB and LAN I/O Converters

(AN 1475-1)
5989-0123EN

Supplemental Characteristics
for all model numbers

DC Floating Voltage: Output terminals

can be floated up to ±240 Vdc from
chassis ground

Remote Sensing: Up to half the rated
output voltage can be dropped in each
load lead. The drop in the load leads
subtracts from the voltage available
for the load.

Command Processing Time: Average time
required for the output voltage to begin to
change following receipt of digital data is
20 ms for the power supplies connected
directly to the GPIB

Output Programming Response Time: The
rise and fall time (10/90% and 90/10%) of
the output voltage is less than 15 ms. The
output voltage change settles within
1 LSB (0.025% x rated voltage) of final
value in less than 60 ms.

Down Programming: An active down
programmer sinks approximately
20% of the rated output current

Modulation: (Analog programming of
output voltage and current)
Input Signal: 0 to –5 V
Input Impedance: 10 k Ohm nominal