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參數資料
| 型號： | DCP021205 |
| 英文描述： | Miniature, 2W Isolated UNREGULATED DC/DC CONVERTERS |
| 中文描述： | 微型，2W的隔離未穩(wěn)壓DC / DC轉換器 |
| 文件頁數： | 7/10頁 |
| 文件大?。?/td> | 186K |
| 代理商： | DCP021205 |
SBVS011B
DCP02
7
FIGURE 2. Connecting Dual Outputs in Series.
ADDITIONAL FUNCTIONS
DISABLE/ENABLE
The DCP02 can be disabled or enabled by driving the SYNC
pin using an open drain CMOS gate. If the SYNC pin is
pulled low, the DCP02 will be disabled. The disable time
depends upon the external loading; the internal disable func-
tion is implemented in 2
μ
s. Removal of the pull down will
cause the DCP02 to be enabled.
Capacitive loading on the SYNC pin should be minimized in
order to prevent a reduction in the oscillator frequency.
DECOUPLING
Ripple Reduction
The high switching frequency of 400kHz allows simple
filtering. To reduce ripple, it is recommended that a 1
μ
F
capacitor is used on V
OUT
. Dual outputs should both be
decoupled to pin 5. A 2.2
μ
F capacitor on the input is
recommended.
Connecting the DCP02 in Series
Multiple DCP02 isolated 2W DC/DC converters can be
connected in series to provide nonstandard voltage rails.
This is possible by utilizing the floating outputs provided by
the DCP02’s galvanic isolation.
Connect the positive V
OUT
from one DCP02 to the negative
V
OUT
(0V) of another (see Figure 1). If the SYNC pins are
tied together, the self-synchronization feature of the DCP02
will prevent beat frequencies on the voltage rails. The SYNC
feature of the DCP02 allows easy series connection without
external filtering, minimizing cost.
The outputs on dual output DCP02 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
DCP022415D could be connected to provide a 30V rail.
Connecting the DCP02 in Parallel
If the output power from one DCP02 is not sufficient, it is
possible to parallel the outputs of multiple DCP02s, as
shown in Figure 3. Again, the SYNC feature allows easy
synchronization to prevent power-rail beat frequencies at no
additional filtering cost.
DCP
02
+V
OUT
V
SUPPLY
+V
OUT
–
V
OUT
–
V
OUT
0V
V
S
0V
COM
FIGURE 3. Connecting Multiple DCP02s in Parallel.
DCP
02
0V
0V
V
OUT
V
SUPPLY
V
S
0V
DCP
02
V
OUT
2 x Power Out
SYNC
SYNC
V
S
0V
COM
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相關代理商/技術參數 |
參數描述 |
|---|---|
| DCP021205DP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Miniature, 2W, Isolated UNREGULATED DC/DC CONVERTERS |
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| DCP021205DPNVA | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Miniature, 2W, Isolated UNREGULATED DC/DC CONVERTERS |
| DCP021205DU | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Miniature, 2W, Isolated UNREGULATED DC/DC CONVERTERS |
| DCP021205DUDVB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Miniature, 2W, Isolated UNREGULATED DC/DC CONVERTERS |
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