Datasheet

B.
C.
MULTI-RANGE OPERATION
When the power supply is configured that the total output (Current x
Voltage output) is less than the rated power output, it functions as a
typical Constant Current (C.C) and Constant Voltage (C.V) power supply.
However, when the power supply is configured such that the total output
power (Current x Voltage Output) exceeds the rated power output, the
effective output is actually limited to the operation area of the unit.
C.V / C.C PRIORITY SELECTION
The Inrush Current and Surge
Voltage occur at LED Forward
Voltage(Vf )Under C.V Priority
The CC Priority Feature Effectively Limits
the Occurrence of Inrush Current and
Surge Voltage when the Supplied Voltage
Rises to the LED Forward Voltage
Using GDS-3354 DSO to Test LED
Operation Under C.V Priority and
C.C Priority Respectively
The PSW-Series provides C.C Mode and C.V Mode to fit various
applications in the general purpose market. To get into critical
application niches, however, the power supply needs to provide
advanced features to meet the specific requirements. The C.C
and C.V Priority Selection enable the power supply to run under
C.C priority, rather than normal CV priority, at the output-on stage.
ADJUSTABLE SLEW RATE
The PSW-Series has adjustable slew rates for the level transition of both
Current and Voltage. This gives the PSW-Series power supply the ability
to set specific rise time and fall time of the Voltage and Current drawn
from the power supply to verify DUT performance during the Voltage /
Current level transition. The feature also provides the benefit to slow
down the voltage transition at the power output-on to protect DUT from
inrush current damage. This is especially useful for the test of heavy-
current-drawn devices like capacitors.
The Adjustable Rise Time
of the PSW 30V
The Adjustable Rise Time
of the PSW 800V
D.
BLEEDER CONTROL
PSW-Series Built-in Bleed Resistor
V-I Characteristic
of Diode
The PSW-Series employs a bleed resistor in parallel with the output
terminal. Bleed resistor is designed to dissipatch the power from the
power supply filter capacitors when power is turned off and the load is
disconnected. Without a bleed resistor, power terminal may remain
charged on the filter capacitors for some time and be potentially
hazardous. In addition, bleed resistor also allows for smoother voltage
regulation of the power supply as the bleed resistor acts as a minimum
voltage load. The bleed resistance can be turned on or off using the
configuration setting.
A.
Current ( A)
Vo ltage (V)
26.6
4.5 9.0 13.5
80
Type III
Type II
Type I
30 4540205 10 15 250 35
0
20
40
60
80
90
27 40.5
0
5
30
Current ( A )
Vo lt age (V)
10
15
20
25
0 204060 80100
10
12 24 36
30
35
120
Type III
Type II
Type I
72 108
PSW 30V Series Operating Area
PSW 250V Series Operating Area
PSW 80V Series Operating Area
PSW 800V Series Operating Area
PSW 160V Series Operating Area
0
20
160
Current(A)
Vol tage(V)
40
60
80
140
0 5 10 15 20
180
25
Type III
Type II
Type I
100
120
2.25 4.5 6.75
160
50
14.4 21.67. 2
DSO
Current ( A)
Current ( A )