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DCP010505DBP 参数 Datasheet PDF下载

DCP010505DBP图片预览
型号: DCP010505DBP
PDF下载: 下载PDF文件 查看货源
内容描述: 微型1W隔离未稳压DC / DC转换器 [Miniature, 1W Isolated UNREGULATED DC/DC CONVERTERS]
分类和应用: 转换器光电二极管输出元件
文件页数/大小: 8 页 / 129 K
品牌: BURR-BROWN [ BURR-BROWN CORPORATION ]
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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 utilizing the floating outputs provided by
the DCP01B’s galvanic isolation.
Connect the positive V
OUT
from one DCP01B to the nega-
tive V
OUT
(0V) of another (see 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 series
connection without external filtering, minimizing cost.
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 DCP01Bs, as
shown in Figure 3. Again, the SYNC
IN
feature allows easy
synchronization to prevent power-rail beat frequencies at no
additional filtering cost.
PCB LAYOUT
Ripple and Noise
Careful consideration should be given to the layout of the
PCB in order that the best results can be obtained.
The DCP01B is a switching power supply and as such can
place high peak current demands on the input supply. In
order to avoid the supply falling momentarily during the fast
switching pulses ground and power planes should be used to
track the power to the input of DCP01B. If this is not
possible then the supplies must be connected in a star
formation with the tracks made as wide as possible.
If the SYNC
IN
pin is being used then the tracking between
device SYNC
IN
pins should be short to avoid stray capaci-
tance. If the SYNC
IN
pin is not being used it is advisable to
place a guard ring, (connected to input ground) around this
pin to avoid any noise pick up.
The output should be taken from the device using ground
and power planes, this will ensure minimum losses.
A good quality low ESR capacitor placed as close as
practicable across the input will reduce reflected ripple and
ensure a smooth start up.
A good quality low ESR capacitor placed as close as
practicable across the rectifier output terminal and output
ground will give the best ripple and noise performance.
THERMAL MANAGEMENT
Due to the high power density of this device it is advisable
to provide ground planes on the input and output.
V
SUPPLY
V
S
DCP
0V
COM
01B
+V
OUT
–V
OUT
0V
+V
OUT
–V
OUT
FIGURE 2. Connecting Dual Outputs in Series.
V
SUPPLY
V
S
SYNC
IN
0V
DCP
01B
V
OUT
0V
2 x Power Out
V
S
SYNC
IN
0V
COM
DCP
01B
V
OUT
0V
FIGURE 3. Connecting Multiple DCP01Bs in Parallel.
®
DCP01B
8