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DCH1228D

ETC
Part Number DCH1228D
Manufacturer ETC
Description DC/DC CONVERTERS 5/ 12/ OR 28 VOLT INPUT
Published Mar 27, 2005
Detailed Description FEATURES • –55°C to 100°C • 4 to 6.5, 9 to 15, or 20 to 32 VDC input • Fully isolated • Output regulated from input side...
Datasheet PDF File DCH1228D PDF File

DCH1228D
DCH1228D


Overview
FEATURES • –55°C to 100°C • 4 to 6.
5, 9 to 15, or 20 to 32 VDC input • Fully isolated • Output regulated from input side • 100 kHz typical switching frequency • Topology – Push-Pull DC/DC Converter • Up to 75% efficiency • No minimum load • Output capacitor suggested DC/DC CONVERTERS 5, 12, OR 28 VOLT INPUT DCH SERIES 3 WATT MODELS VDC OUTPUT SINGLES 5 12 28 DUALS ±12 ±15 ±28 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 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.
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.
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.
FIGURE 1: DUAL DCH CONVERTER WITH EXTERNAL CAPACITORS Positive Input 28 V Positive Output Output Common + + Load Load Input Common Negative O...


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