Datasheet
DC POWER SUPPLIES
A Greater Measure of Confidence
www.keithley.com
1.888.KEITHLEY
(U.S. only)
2200 power supplies convert from constant voltage to constant current operation in which the cur-
rent is controlled at the Current Limit setting and the voltage varies based on the load resistance.
In addition to the limit settings, you can set a timer to turn off the output after a specified time inter-
val, allowing you to setup a test on your bench and let it to run unattended knowing that power will
automatically be removed from the DUT after the programmed time has elapsed.
Ensures that Test Parameters are Not Accidentally Changed
Prevent accidental changes to settings to avoid collecting incorrect test data and wasting time repeat-
ing tests by taking advantage of the Series 2200’s front panel lock-out functions. You can disable the
front panel knob or disable all the front panel data entry controls. When all the front panel data
entry keys are disabled, the Series 2200 prompts for a password to re-activate the keys.
Select a Convenient Interface
The Series 2200 DC power supplies can be an integral part of your automated test system. You have
the option to control each power supply over a GPIB interface or a USB interface. The USB interface
is test and measurement class (TMC) compliant so you can use the standard SCPI command syntax.
Standard drivers are included with the Series 2200 to simplify interfacing them into an automated
test environment.
Ordering Information
2200-20-5 Programmable DC
Power Supply, 20V, 5A
2200-30-5 Programmable DC
Power Supply, 30V, 5A
2200-32-3 Programmable DC
Power Supply, 32V, 3A
2200-60-2 Programmable
DC Power Supply,
60V, 2.5A
2200-72-1 Programmable
DC Power Supply,
72V, 1.2A
Accessories Supplied
213-CON Rear Panel Mating
Connector with Handle
CS-1638-12
Rear Panel Mating
Connector
Documentation and Driver CD
Series 2200
Single-Channel Programmable
DC Power Supplies
ACCESSORIES AVAILABLE
CS-1638-12 Rear Panel Mating Connector
KPCI-488LPA IEEE-488.2 Interface Board for the PCI Bus
USB-B-1 USB Cable
4299-7 Fixed Rack Mount Kit
7007-05 Double Shielded Premium IEEE-488 Interface
Cables, 0.5m (1.6 ft)
7007-1 Double Shielded Premium IEEE-488 Interface
Cables, 1m (3.2 ft)
7007-2 Double Shielded Premium IEEE-488 Interface
Cables, 2m (6.5 ft)
7007-3 Double Shielded Premium IEEE-488 Interface
Cables, 3m (10 ft)
7007-4 Double Shielded Premium IEEE-488 Interface
Cables, 4m (13 ft)
SERVICES AVAILABLE
Model Number-EW (Example: 2200-20-5-EW)
1 additional year of factory warranty
C/Model Number-3Y-STD
3 calibrations within 3 years of purchase
C/Model Number-3Y-DATA
3 (ANSI-Z540-1 compliant) calibrations within
3 years of purchase
C/Model Number-5Y-STD
5 calibrations within 5 years of purchase
C/Model Number-5Y-DATA
5 (ANSI-Z540-1 compliant) calibrations within
5 years of purchase
R
Lead
I
Sense
= 0A
I
Load
Source
Sense
Source
Sense
R
Lead
+ V
Lead
–
R
Lead
R
Lead
V
Load
Load
+
–
No matter how accurate your power supply output is, you cannot guarantee that the pro-
grammed output voltage is the same as the voltage at the DUT’s load. This is because
a power supply with two source output terminals regulates its output only at its output
terminals. However, the voltage you want regulated is at the DUT’s load, not at the power
supply’s output terminals. The power supply and the load are separated by lead wires
that have a resistance, R
Lead
, determined by the length of the lead, the conductivity of
the conductor material, and the geometry of the conductor. The voltage at the load is:
V
Load
= V
Programmed
– 2
*
V
Lead
= V
Programmed
– 2
*
I
Load
*
R
Lead
. If the load requires high current, then
I
Load
is high and V
Lead
can easily be a few tenths of a volt, especially if the power supply leads
are long, as can be the case in an automated test rack. A voltage at the load could be 80mV
to 160mV lower than the desired voltage (with 2A to 4A flowing through a 16-gauge wire).
The remote sensing technique solves the problem of voltage drop in the leads by extending
the power supply feedback loop to the input of the load. Two sense lines from the power
supply are connected to the power inputs. These sense leads are voltage measuring lines
that connect to a high impedance voltage measuring circuit in the power supply. Since the
voltage measuring circuit is a high input impedance circuit, the voltage drop in the sense
leads is negligible. The sense lead voltage measurement circuit becomes the feedback
control loop for the power supply. The voltage at the load is fed back to the power supply
by the sense leads. The power supply raises its output to overcome the voltage drop in the
source leads and V
Load
= V
Programmed
.
Thus, only with remote sensing can the accuracy of the power supply be applied to
the load.
Single-channel programmable DC power supplies
Single-channel programmable DC power supplies
3-Year
Warranty