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PDF DCH2815D Data sheet ( Hoja de datos )

Número de pieza DCH2815D
Descripción DC/DC CONVERTERS 5/ 12/ OR 28 VOLT INPUT
Fabricantes ETC 
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No Preview Available ! DCH2815D Hoja de datos, Descripción, Manual

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
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.
DCH SERIES
3 WATT
MODELS
VDC OUTPUT
SINGLES
5
12
28
DUALS
±12
±15
±28
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 28 V
WITH EXTERNAL CAPACITORS
Positive
Input
Positive
Output
Output Common
Input
Common
Negative
Output
+ Load
+ Load
Typical Performance Curves: 25°C Tc ,nominal Vin
Efficiency
DCH2805S
FIGURE 2
Output Current vs Output Voltage
DCH2805S
FIGURE 3
Efficiency
DCH1215D
FIGURE 4
Output Current vs Output Voltage
DCH1215D
FIGURE 5
B4-31

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