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SWS 600L, 1000L
(a)
Series Operation
2.2K ?
AUX
CNT1
V1
For series operation, both method (A) and (B) are possible.
There might be a step in the output rise waveform during series
12V
150 ?
CNT2
operation.
typ
R1
SW
Method (A)
Power Supply
TOG
+S
+Vm
Example V1:5V R1:620 Ω )
G2
-Vm
-S
+S
+Vm
Load
(b)
-Vm
AUX
-S
2.2K ?
CNT1
Method (B)
12V
typ
150 ?
CNT2
Power Supply
+S
+Vm
Load
TOG
SW
-Vm
-S
+S
(c)
G2
AUX
+Vm
-Vm
-S
Load
2.2K ?
CNT1
Parallel Operation
12V
typ
150 ?
CNT2
SW
Current balancing function is provided. Both operations mode
(A) and (B) are possible.
(A) To Increase the Output Current
Correct PC to PC terminal and COM to COM terminal, the current
TOG
G2
Fig.2.3 Examples of connecting remote ON/OFF circuit
Output Ripple & Noise
The standard speci?cation for maximum ripple value is mea-
sured by measurement circuit as below. When load lines are
longer, ripple becomes larger. In this case, electrolytic capaci-
tor, ?lm capacitor, etc. might be necessary to use across the
load terminal. The output ripple cannot be measured accurately
if the probe ground lead of oscilloscope is too long.
150mm
balancing function activates and output current of each power
supply is equivalently supplied to load. Wires to PC terminals,
COM terminals shall be as short as possible and same length
and twisted.
(1) Adjust the output voltage of each power supply to be same
value within 1% or 100mV whichever is smaller.
(2) Use same length and type of wires for all load lines.
(3) Please make sure that the sum of output current values
does not exceed a value obtained from the right side of fol-
lowing equation.
Maximum of total output current in parallel operation ≤
Rated current per unit × Number of units × 0.9
(4) Parallel operation is possible up to 5 units.
(B) To Use as a Backup Power Supply
(1) Adjust the output voltage (Vo) of each power supply to be
same value within 1% or 100mV whichever is smaller.
+
Power
Supply
-
47μ
0.1μ
Load
(2) Set power supply output voltage higher to compensate the
forward voltage drop of diode.
(3) Use within the speci?cations for output voltage and output
current.
(4) When one of power supplies fails, the remaining non-failure
Coaxial Cable
1.5m
?All specifications are subject to change without notice.
Oscilloscope
20MHz
power supplies continue to maintain the output. If one of
the power supplies stop operating, the output voltage may
13
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