DCP01B SERIES
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SBVS012C − DECEMBER 2000 − REVISED AUGUST 2005
Connecting the DCP01B in Series
Multiple DCP01B isolated 1W DC/DC converters can be
connected in series to provide nonstandard voltage rails.
This is possible by using the floating outputs provided by
the DCP01B galvanic isolation.
Connect the positive V
OUT
from one DCP01B to the
negative V
OUT
(0V) of another, as shown in Figure 1. If the
SYNC
IN
pins are tied together, the self-synchronization
feature of the DCP01B will prevent beat frequencies on the
voltage rails. The SYNC
IN
feature of the DCP01B allows
easy connection in series, which reduces separate filtering
components.
The outputs on dual output DCP01B versions can also be
connected in series to provide two times the magnitude of
V
OUT
, as shown in Figure 2. For example, a dual 15V
DCP01B could be connected to provide a 30V rail.
Connecting the DCP01B in Parallel
If the output power from one DCP01B is not sufficient, it is
possible to parallel the outputs of multiple DCP01B
converters (see Figure 3). Again, the SYNC
IN
feature
allows easy synchronization to prevent power-rail beat
frequencies at no additional filtering cost.
V
SUPPLY
C
IN(1)
V
S
SYNC
IN
0V
DCP
01B
V
OUT 1
C
OUT
0V
V
OUT1
+ V
OUT2
V
S
C
IN(1)
SYNC
IN
0V
COM
DCP
01B
V
OUT 2
C
OUT
0V
NOTE: (1) C
IN
requires a low−ESR ceramic capacitor: 5V to 15V version is 2.2
µ
F;
24V version is minimum 0.47µF. C
OUT
= 1.0µF.
Figure 1. Connecting the DCP01B in Series
V
SUPPLY
C
IN(1)
V
S
DCP
0V
COM
01B
+V
OUT
−
V
OUT
0V
C
OUT(1)
C
OUT(1)
+V
OUT
−V
OUT
NOTE: (1) C
IN
requires a low−ESR ceramic capacitor: 5V to 15V version is 2.2µF;
24V version is minimum 0.47µF. C
OUT
= 1.0µF.
Figure 2. Connecting Dual Outputs in Series
V
SUPPLY
C
IN(1)
V
S
SYNC
IN
0V
DCP
01B
V
OUT
C
OUT(1)
0V
2 x Power Out
V
S
C
IN(1)
SYNC
IN
0V
COM
DCP
01B
V
OUT
C
OUT(1)
0V
NOTE: (1) C
IN
requires a low−ESR ceramic capacitor: 5V to 15V version is 2.2µF;
24V version is minimum 0.47µF. C
OUT
= 1.0µF.
Figure 3. Connecting Multiple DCP01Bs in Parallel
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