Support of 0-v input and high-speed response, Six operation modes, Support of 0-v input – Atec Kikusui-PLZ-4W Series User Manual
Page 5: Variable slew rate, High precision and high resolution, Basic performance and operations, Equivalent circuit and operation in each mode, Plz164w operating range and setting resolution
5
P L Z - 4 W S E R I E S
Six operation modes
The system can operate in six modes - constant current,
constant resistance, constant voltage, constant power,
constant current + constant voltage, and constant resistance
+ constant voltage.
Support of 0-V input
PLZ164WA and PLZ664WA are 0-V input operating voltage
models. This feature is indispensable for testing single-cell
fuel cells. The continuing trend toward lower power
consumption and semiconductor process miniaturization is
driving semiconductor devices to operate on increasingly
lower voltages. These models are suitable for evaluating
such power supplies.
* This product detects a ‘no-input’ state when the input voltage is below about 0.3 V
and when the input current is below about 1% of the range rating. Therefore, if the
input voltage is raised gradually from 0 V, no current flows until the input voltage
exceeds 0.3 V. If a current exceeding 1% of the range rating flows, it is possible to
have a current flow at less than 0.3 V.
* PLZ164WA and PLZ664WA have bias supplies inside their chassis. In the case of
a power supply in which a diode is arranged in the direction from the minus output
to the plus output, such as a switching power supply, if the output of the power
supply of the device under test is turned off with this system’s load on, the current
flows from the bias supply to the diode, generating a reverse connection alarm.
Variable slew rate
The slew rate determines the slope of change in the current
when the set current needs to change sharply as in a
transient response test. This system lets you set the current
change rate per unit time as appropriate for the selected
current range.
* Adequate slew rate performance is guaranteed as long as the change in the current
remains within the 2%-to-100% range of the rating. The maximum rise time is
limited to 10
μs. If the change in the current is small, the slew rate value may not
be stored for the reason stated above.
High precision and high resolution
The built-in three-range configuration provides both wide
dynamic range and high precision. The voltmeter, ammeter
and wattmeter functions that display values using up to five
digits each and a minimum setting resolution of 10
μA (for
the PLZ164W/164WA L range) are implemented.
• Shift in the current
waveform with the
change in the
slew rate
Equivalent circuit and operation in each mode
Support of 0-V Input and High-Speed Response
Basic Performance and Operations
PLZ164W operating range and setting resolution
Operating range
Setting resolution
Constant
current mode
H range
M range
L range
0 A to 33 A
0 A to 3.3 A
0 A to 330 mA
1 mA
0.1 mA
0.01 mA
Constant
resistance
mode*
H range
M range
L range
22 S to 400
μS
2.2 S to 40
μS
0.22 S to 4
μS
400
μS
40
μS
4
μS
Constant
voltage mode
H range
L range
1.5 V to 150 V
1.5 V to 15 V
10 mV
1 mV
Constant
power mode
H range
M range
L range
16.5 W to 165 W
1.65 W to 16.5 W
0.165 W to 1.65 W
10 mW
1 mW
0.1 mW
* Conductance [S] = Input current [A]/Input voltage [V] = 1/Resistance
[
Ω]
PLZ-4W Series
Electronic Load
I
V
Constant Voltage
power supply
Current is constant
even when the voltage
changes
Current I
Voltage
［
V］
0
V
1
CC setting value
Voltage
［
V］
Current I
Voltage
［
V］
Current I
Voltage
［
V］
Current I
Voltage
［
V］
Current I
Voltage
［
V］
Current I
I
V
PLZ-4W Series
Electronic Load
Constant voltage
power supply
Resistance (V/I) is constant
even when the voltage and
current vary
0
V1
V
2
V
1
I
1
I
2
V
2
V
1
I
1
I
2
=
=
R
Constant voltage
power supply
PLZ-4W Series
Electronic Load
Constant voltage
power supply
PLZ-4W Series
Electronic Load
PLZ-4W Series
Electronic Load
PLZ-4W Series
Electronic Load
I
V
0
Power (current×voltage) is constant
even when the current and voltage vary
V
1
V
2
V
1
I
1
I
2
V
2
V
1
I
1
I
2
=
=
P
Rated maximum
current value
I
V
R
1
Voltage is constant even
when the current varies
V
1
0
Battery
I
V
R
1
CV operation
Voltage is constant even
when the current varies
Current is constant
even when the
voltage varies
V
M
0
CC operation
CC setting value
CV
Setting
value
Battery
Setting
value
I
V
V
M
R
1
0
CV
CV operation
Voltage is constant even
when the current varies
CR operation
Resistance (V/I) is constant
even when the voltage and
current vary
●Constant current mode(CC)
●Constant resistance mode(CR)
●Constant voltage mode(CV)
●Constant power mode(CP)
●Constant current+constant voltage mode(CC+CV)
●Constant resistance+constant voltage mode(CR+CV)