2-20
Return to
Section Topics
2308-900-01 Rev. A / July 2008
Section 2: Basic Power Supply Operation
Model 2308 Portable Device Battery/Charger Simulator User’s Manual
V
Charger
> V
Supply
+ I
sink
R
cable
, is satisfied, current I
sink
flows into the positive (+) terminal of the
power supply. Current readback is negative.
Figure 2-6
Sink operation
However, in this configuration current compliance may not be reached and current measurements
may be unstable if I
sink
R
cable
is large.
Figure 2-7
shows a preferred method for measuring the
current output of the charger circuit at a rated output voltage with the power supply operating in
local sense mode. Set the supply output voltage to 0.00 V and the enter the desired test
(compliance) current, I
test
. Select R
test
so that V
charger
, the desired test voltage, is the product of
I
test
and R
test
.
Figure 2-7
Preferred method
Unless high speed transient performance is absolutely required when operating as a sink, the
LOW bandwidth output mode provides superior results with a constant current or voltage load
such as a battery charger.
CAUTION
Exceeding current sink capacity (0–5 V: 3A max. 5 V–15 V: Derate 0.2 A per volt
above 5 V) could cause damage to the power supply that is not covered by the
warranty.
NOTE
Figure 2-7
shows the preferred method for measuring current output of the
charger circuit at a rated output voltage with the power supply operating in local
sense mode.
+ sense
- sense
+ output
- output
Model
Charger
R
S
V
S
V
Charger
R
Cable
R
Cable
V
C
R
C
V
Supply
I
Sink
+ sense
- sense
+ output
- output
Model
Charger
R
S
V
S
V
Charger
R
Cable
R
Cable
V
Supply
= 0
R
Test
V
C
R
C
I
Sink
Содержание 2308
Страница 2: ......
Страница 12: ...This page left blank intentionally...
Страница 32: ...This page left blank intentionally...
Страница 106: ...This page left blank intentionally...
Страница 140: ...This page left blank intentionally...
Страница 208: ...This page left blank intentionally...
Страница 209: ...Appendix A Error and Status Messages In this Appendix Error and status message definitions A 2 Topic Page...
Страница 220: ...This page left blank intentionally...