Datasheet > DCH1228D

DCH1228D

更新时间： 2024-11-22 22:29:23

品牌	Logo	应用领域
其他 - ETC		转换器输出元件输入元件
页数	文件大小	规格书
4页	80K
描述
DC/DC CONVERTERS 5, 12, OR 28 VOLT INPUT

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DCH1228D 数据手册

FEATURES

DCH SERIES

3 WATT

DC/DC CONVERTERS

5, 12, OR 28 VOLT NPUT

• –55°C to 100°C

• 4 to 6.5, 9 to 15, or

20 to 32 VDC input

• Fully isolated

MODELS

VDC OUTPUT

• Output regulated from

input side

SINGLES

DUALS

±12

±15

• 100 kHz typical switching

frequency

• Topology –

±28

Push-Pull DC/DC Converter

• Up to 75% efficiency

• No minimum load

• Output capacitor suggested

Size (max.): 0.975 x 0.800 x 0.350 inches (24.77 x 20.32 x 8.89 mm)

See section B8, case A3, for dimensions.

Weight:

20 grams typical

Screening: Standard or ES. See Section C2 for screening options,

see Section A5 for ordering information.

DESCRIPTION

Figure 1 shows a standard connection scheme for a dual output

model. Users may also elect to use a dual output device to provide

a single output at double the rated output voltage. The double

voltage connection is achieved by leaving the normal output

common pin (Pin 15) unconnected and using either the positive or

negative Vout pin for the output common connection.

The DCH Series™ offers isolated, unregulated DC/DC converters

with up to 3 watts of output power in a low profile (0.350 max.) metal

package. Single and dual output models are available with input

voltages of 5, 12, or 28 VDC. DCH Series converters operate over

a –55°C to +100°C temperature range.

DCH Series converters use a non-saturating core circuit operating

at a frequency of approximately 100 kHz, which reduces reflected

input ripple and minimizes EMI/RFI problems. For applications

requiring MIL-STD-461C, CEO3, reflected input ripple levels, refer

to Section B5 or contact your Interpoint representative for matching

EMI filters.

On all DCH Series models, a tantalum capacitor with a minimum

value of 22 µF and an appropriate voltage rating should be

connected between the output common and the output line(s) to

minimize output ripple.

Positive

Input

Positive

Output

FIGURE 1:

Load

DUAL DCH CONVERTER

28 V

Output Common

WITH EXTERNAL CAPACITORS

Input

Common

Negative

Output

Typical Performance Curves: 25°C Tc ,nominal Vin

Efficiency

DCH2805S

Output Current vs Output Voltage

DCH2805S

Efficiency

DCH1215D

Output Current vs Output Voltage

DCH1215D

FIGURE 2

FIGURE 3

FIGURE 4

FIGURE 5

B4-31

12 3 4

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