DCH2805S

DCH0505S CRANE | Alldatasheet

Document overview

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Technical content

Features

• –55°C to 100°C
• 5 or 28 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

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 volt- ages of 5 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. MODELS VDC OUTPUT SINGLES DUALS ±12 ±15 Output Current vs Output Voltage DCH2805S FIGURE 3 Efficiency DCH2805S FIGURE 2 See case A3 for dimensions. Weight: 20 grams typical Screening: Standard or ES. See “100°C Non-QML Products – Environmental Screening (Standard & ES)” screening table for screening options. Negative Output 28 V Load Load Input Common Positive Input Positive Output Output Common FIGURE 1: DUAL DCH CONVERTER WITH EXTERNAL CAPACITORS Typical Performance Curves: 25°C Tc, nominal Vin DCH SERIES

3 WATTDC/DC CONVERTERS

5 OR 28 VOLT INPUT

NOT RECOMMENDED FOR NEW DESIGNS

Output Voltage Tolerance (Full Load)

• 5 volt output models ±0.25
• 15 volt output models ±0.5 Line Regulation
• Output is directly proportional to input voltage. Output Voltage Temperature Coefficient
• 0.02%/°C maximum Converter Frequency
• 100 kHz typical Isolation
• 100 megohm minimum at 500 V Note 1. Pins 14 and 15 are connected inter- nally on single output models. Notes 1. Nominal output voltage is correct only for nominal input voltage. Output voltage changes in proportion to input voltage. 2. Output ripple results require the connection of a tantalum capacitor (22 μF minimum) across each output. Pin Designation

1 Positive Input

2 No Connection

3 Input Common

8 No Connection

9 Case

14 Negative Output

15 Output Common 1

16 Positive Output

• 3 watts Lead Soldering Temperature (10 sec per lead)
• 300°C Storage Temperature Range (Case)
• –55°C to +125°C RECOMMENDED OPERATING CONDITION Input Voltage Range (VDC)
• 5 volt input models 4.0 to 6.5
• 28 volt input models 20.0 to 32.0 Case Operating Temperature (Tc)
• –55°C to +100°C full power BOTTOM VIEW DCH Dot on top of cover indicates pin one. 16 9 1415 See case A3 for dimensions DCH 28 12 D / ES Base Model Input Voltage Output Voltage Number of Outputs (S = single, D = dual) Screening (Standard screening has no designator in this position.) MODEL NUMBERING KEY FIGURE 6: PIN OUT Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified. MODEL NUMBER INPUT VOLTAGE NOMINAL VDC OUTPUT VOLTAGE NOMINAL VDC OUTPUT CURRENT NOMINAL VDC TC = -55°C TO +100°C MAX mA OUTPUT CURRENT NOMINAL VDC TC = -55°C TO +100°C MAX W EFFICIENCY FULL LOAD MIN LOAD REGULATION 50% TO FULL LOAD TYP mV INPUT CURRENT2 10% LOAD MAX mA OUTPUT RIPPLE MAX mV-pp DCH0505S 5 5 400 2.0 67 470 220 300 DCH0512S 5 12 208 2.5 72 830 250 200 DCH0512D 5 ±12 ±104 2.5 72 830 250 100 DCH0515D 5 ±15 ±83 2.5 72 830 250 100 DCH2805S 28 5 500 2.5 68 450 50 300 DCH2812S 28 12 250 3.0 75 375 50 200 DCH2812D 28 ±12 ±125 3.0 75 375 50 100 DCH2815D 28 ±15 ±100 3.0 75 375 50 100 DCH SERIES

0.000 0.097 (2.46) 0.697 (17.70) 0.000 0.135 (3.43) 0.835 (21.21) 16 9 230.235 (5.97) 1415 0.335 (8.51) BOTTOM VIEW CASE A30.350 max (8.89) 0.350 max (8.89) 0.000 0.27 ±0.02 (6.9 ±0.5) 0.018 ± 0.002 dia. (0.46 ± 0.05) Projection Weld Dot on top of case indicates pin one. 0.000 0.27 ±0.02 (6.9 ±0.5) Seam Seal Seal hole: 0.056 ±0.002 (1.42 ±0.05) Case dimensions in inches (mm) Tolerance ±0.005 (0.13) for three decimal places ±0.01 (0.3) for two decimal places unless otherwise specified Materials Header Kovar/Nickel Cover Kovar/Nickel Pins Kovar/Nickel/Gold, matched glass seal Case dimensions in inches (mm) Tolerance ±0.005 (0.13) for three decimal places ±0.01 (0.3) for two decimal places unless otherwise specified CAUTION Heat from reflow or wave soldering may damage the device. Solder pins individually with heat application not exceeding 300°C for 10 seconds per pin. Case A3, Rev C, 20060731 Please refer to the numerical dimensions for accuracy. All information is believed to be accurate, but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make changes in products or specifications without notice. Copyright © 1999-2006 Interpoint Corp. All rights reserved. 0.980 max (24.89) 0.805 max (20.45) FIGURE 7: CASE A3 DCH SERIES

TEST 100°C 100°C STANDARD /ES non QML 1 non QML 1 Pre-cap Inspection Method 2017, 2032 yes yes Temperature Cycle (10 times) Method 1010, Cond. B, -55°C to 125°C ambient no yes Constant Acceleration Method 2001, 500 g no yes Burn-In 96 hours, typical case temperature 100°C case 2 no yes Final Electrical Test MIL-PRF-38534, Group A Subgroups 1 and 4: +25°C case yes yes Hermeticity Test Fine Leak, Method 1014, Cond. A no yes Gross Leak, Method 1014, Cond. C no yes Gross Leak, Dip (1 x 10 -3) yes no Final Visual Inspection Method 2009 yes yes Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. 100°C NON-QML PRODUCTS— ENVIRONMENTAL SCREENING (STANDARD & ES) Notes: 1. Non-QML products do not meet all of the requirements of MIL-PRF-38534 2. Burn-in is still air with an ambient temperature designed to bring the case temperature to 100°C DCH SERIES All technical information is believed to be accurate, but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make changes in products or specifications without notice. DCH Series is a trademark of Interpoint. Copyright © 1991 - 2006 Interpoint. All rights reserved.