Speed and accuracy for test optimization
– 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
Data Sheet
Keysight Technologies
6640A Series Single-Output,
200 W DC Power Supplies, GPIB
02 | Keysight | 6640A Series Single-Output, 200 W DC Power Supplies, GPIB - Data Sheet
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 acoustic noise.
03 | Keysight | 6640A Series Single-Output, 200 W DC Power Supplies, GPIB - Data Sheet

Supplemental Characteristics
(Non-warranted characteristics determined
by design and useful in applying the product)
6641A
6642A
6643A
6644A
6645A
Average programming resolution
Voltage
Current
OVP
2 mV
6 mA
13 mV
5 mV
3 mA
30 mV
10 mV
2 mA
54 mV
15 mV
1.2 mA
93 mV
30 mV
0.5 mA
190 mV
OVP accuracy 160 mV 400 mV 700 mV 1.2 V 2.4 V
Specifications
(at 0 ° to 55 ° unless otherwise specified)
6641A
6642A
6643A
6644A
6645A
Number of outputs 1 1 1 1 1
GPIB Yes Yes Yes Yes Yes
Output ratings
Output voltage
Output current (40 °C)
Maximum current (50 °C/55 °C)
0 to 8 V
0 to 20 A
18 A/17 A
0 to 20 V
0 to 10 A
9 A/8.5 A
0 to 35 V
0 to 6 A
5.4 A/5.1 A
0 to 60 V
0 to 3.5 A
3.2 A/3 A
0 to 120 V
0 to 1.5 A
1.4 A/1.3 A
Programming accuracy (at 25 °C ± 5 °C)
Voltage 0.06% +
Current 0.15% +
5 mV
26 mA
10 mV
13 mA
15 mV
6.7 mA
26 mV
4.1 mA
51 mV
1.7 mA
Ripple and noise from 20 Hz to 20 MHz
Voltage rms
peak-to-peak
Current rms
300 µV
3 mV
10 mA
300 µV
3 mV
5 mA
400 µV
4 mV
3 mA
500 µV
5 mV
1.5 mA
700 µV
7 mV
1 mA
Readback accuracy at 25 °C ± 5 °C
(percent of reading plus fixed)
Voltage 0.07% +
+Current 0.15% +
–Current 0.35% +
6 mV
18 mA
40 mA
15 mV
9.1 mA
20 mA
25 mV
5 mA
12 mA
40 mV
3 mA
6.8 mA
80 mV
1.3 mA
2.9 mA
Load regulation
Voltage
Current
1 mV
1 mA
2 mV
0.5 mA
3 mV
0.25 mA
4 mV
0.25 mA
5 mV
0.25 mA
Line regulation
Voltage
Current
0.5
mV
1 mA
0.5 mV
0.5 mA
1 mV
0.25 mA
1 mV
0.25 mA
2 mV
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 the output
current rating of the supply
04 | Keysight | 6640A Series Single-Output, 200 W DC Power Supplies, GPIB - Data Sheet
continued
Supplemental Characteristics
(Non-warranted characteristics determined
by design and useful in applying the product)
6641A-J04
Special order
option
6643A-J11
Special order
option
6644A-J09
Special order
option
6645A-J05
Special order
option
6645A-J06
Special order
option
Average programming resolution
Voltage
Current
OVP
3.5 mV
5 mA
23 mV
12 mV
2 mA
62 mV
1.4 mV
1.2 mA
110 mV
37.5 mV
0.5 mA
250 mV
42.5 mV
0.5 mA
285 mV
OVP accuracy 260 mV 800 mV 1.5 mV 3 V 3.4 V
Specifications
(at 0 ° to 55 ° unless otherwise specified)
6641A-J04
Special order
option
6643A-J11
Special order
option
6644A-J09
Special order
option
6645A-J05
Special order
option
6645A-J06
Special order
option
Number of outputs 1 1 1 1 1
GPIB Yes Yes Yes Yes Yes
Output ratings
Output voltage
Output current (40 °C)
Maximum current (50 °C/55 °C)
13 V
15.3 A
13.77 A/13 A
40 V
5 A
4.5 A/4.25 A
70 V
3 A
2.7 A/2.55 A
150 V
1.2 A
1.08 A/1.02 A
170 V
1 A
0.9 A/0.85 A
Programming accuracy (at 25 °C ± 5 °C)
Voltage 0.06% +
Current 0.15% +
8.5 mV
21 mA
17.5 mV
6.7 mA
31 mV
4.1 mA
65 mV
1.7 mA
74 mV
1.7 mA
Ripple and noise from 20 Hz to 20 MHz
Voltage rms
peak-to-peak
Current rms
300 µV
3 mV
8 mA
450 µV
3.5 mV
53 mA
600 µV
6 mV
1.5 mA
900 µV
9 mV
1 mA
1 mV
10 mV
1 mA
Readback accuracy at 25 °C ± 5 °C
(percent of reading plus fixed)
Voltage 0.07% +
+Current 0.15% +
–Current 0.35% +
10 mV
15 mA
40 mA
30 mV
5 mA
12 mA
47 mV
3 mA
6.8 mA
100 mV
1.3 mA
2.9 mA
140 mV
1.3 mA
2.9 mA
Load regulation
Voltage
Current
1 mV
1 mA
3 mV
0.25 mA
4.5 mV
0.25 mA
7 mV
0.25 mA
8 mV
0.25 mA
Line regulation
Voltage
Current
0.5
mV
1 mA
1 mV
0.25 mA
1.5 mV
0.25 mA
2.5 mV
0.25 mA
3 mV
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 the output
current rating of the supply
05 | Keysight | 6640A Series Single-Output, 200 W DC Power Supplies, GPIB - Data Sheet
Keysight Models: 6641A, 6642A, 6643A, 6644A, 6645A
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 approxi-
mately 20% of the rated output current
Modulation: (Analog programming of output voltage and current)
Input Signal: 0 to –5 V
Input Impedance: 10 kΩ nominal
AC input:
(AC input frequency 47 to 63 Hz)
Voltage 100 VAC 120 VAC 220 VAC 240 VAC
Current 4.4 A 3.8 A 2.2 A 2.0 A
InpInput power: 480 VA, 400 W at full load; 60 W at no load
GPIB interface capabilities: SH1, AH1, T6, L4, SR1, RL1, PP0, DC1,
DT1, E1, and C0. IEEE-488.2 and SCPI-compatible command set
Software driver:
– IVI-COM
– VXIplug&play
Regulatory compliance: Conforms to UL 1244 and IEC61010-1.
Size: 425.5 mm W x 88.1 mm H x 439 mm D (16.75 in x 3.5 in x 17.3 in)
Weight: Net, 14.2 kg (31.4 lb); shipping, 16.3 kg (36 lb)
Warranty: One year
Top
Side
Rear
Output
434.3 mm
17.1"
425.5 mm
16.75"
421.7 mm
16.6"
88.1 mm
3.5"
100 mm
3.93"
12.7 mm
0.5"
Terminal screw size: m4 x 0.7 x 8 mm
A Thomas & Betts 22-18 ring
crimp-on will fit in this area
± 240 VDC Max to
6 - 32 x 3/8 Screws
+ –
{ }
06 | Keysight | 6640A Series Single-Output, 200 W DC Power Supplies, GPIB - Data Sheet
Ordering information
Opt 100 87 to 106 VAC, 47 to 63 Hz
Opt 120 104 to 127 VAC, 47 to 63 Hz
Opt 220 191 to 233 VAC, 47 to 63 Hz
Opt 240 209 to 250 VAC, 47 to 63 Hz
Opt 0L1 Full documentation on CD-ROM and
printed User’s and Programming Guides.
CD-ROM includes User’s Guide,
Programming Guide, Service Manual, and
Quick Start Guide
Accessories
1CM002A* Rack mount flange kit 88.1 mm H (2U),
1.75 inch hole spacing, two flange
brackets
1CP001A* Rack mount flange and handle kit 88.1
mm H (2U) – two brackets and front
handles
E3663AC Support rails for Keysight rack cabinets
p/n 1494-0060 Accessory slide kit
p/n 1252-3698 7-pin analog plug
p/n 1252-1488 4-pin digital plug
p/n 5080-2148 Serial link cable 2 m (6.6 ft)
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
*Support rails required
07 | Keysight | 6640A Series Single-Output, 200 W DC Power Supplies, GPIB - Data Sheet
This information is subject to change without notice.
© Keysight Technologies, 2012 - 2014
Published in USA, August 2, 2014
5990-9304EN
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Canada (877) 894 4414
Brazil 55 11 3351 7010
Mexico 001 800 254 2440
United States (800) 829 4444

Australia 1 800 629 485
China 800 810 0189
Hong Kong 800 938 693
India 1 800 112 929
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