5962-0251002HXC datasheet, PDF

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5962-0251002HXC: DescriptionAnalog Circuit, Hybrid,; CategoryAnalog mixed-signal IC The signal circuit; File Size561KB，15 Pages; ManufacturerInterpoint （ Crane Aerospace & Electronics ）; Websitehttp://www.interpoint.com

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5962-0251002HXC Overview

Analog Circuit, Hybrid,

5962-0251002HXC Parametric

Parameter Name	Attribute value
Maker	Interpoint （ Crane Aerospace & Electronics ）
Parts packaging code	DIP
Contacts	8
Reach Compliance Code	unknown
Maximum input voltage	40 V
Minimum input voltage	16 V
Number of terminals	8
Maximum operating temperature	125 °C
Minimum operating temperature	-55 °C
Maximum output current	2.4 A
Nominal output voltage	3.3 V
Package body material	METAL
Encapsulate equivalent code	MODULE,8LEAD,.8
Package form	MICROELECTRONIC ASSEMBLY
Certification status	Not Qualified
Filter level	38535Q/M;38534H;883B
technology	HYBRID
Temperature level	MILITARY

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Crane Aerospace & Electronics Power Solutions

smHF single and dual dc/dc converters

28 Volt input – 15 Watt

Features

• Fully qualified to Class H or K

• -55°C to +125°C operation

• 16 to 40 VDC input

• Fully Isolated

• Rad hard optocoupler feedback

• Fixed frequency, 550 kHz typical

• Transient protection 50 V/120 ms

• Inhibit function

• Sync function

• Topology – Single Ended Forward

models

vDc

SIngLE

2.5

3.3

DUAL

±5

±12

±15

• Indefinite short circuit protection

• Undervoltage lockout

• Up to 82% efficiency

description

The SMHF Series™ of 28 V DC/DC converters offers a wide

input voltage range of 16 to 40 volts and up to 15 watts of

output power. The units are capable of withstanding short term

transients up to 50 volts. The package is a hermetically sealed,

projection-welded metal case. Flanged and non-flanged models

are available.

the output load current and providing a constant current output

above the overload point.

igHer

ower

enSity

creening

SMHF converters offer screening options to Space Prototype (O),

Class H, or Class K. Radiation tolerant to Radiation Hardness

Assurance (RHA) levels of “-” (O) or “R”, per MIL-PRF-38534.

Interpoint model numbers use an “O” in the RHA designator posi-

tion to indicate the “-” (dash) Radiation Hardness Assurance level

of MIL-PRF-38534, which is defined as “no RHA”. See “Class H

and K, MIL-PRF-38534 Screening” tables for more information.

The SMHF converters are switching regulators that use a quasi-

square wave, single-ended forward converter design with a

constant switching frequency of 550 kHz. Isolation between input

and output circuits is provided with a transformer in the forward

path and a temperature compensated opto-coupler in the feed-

back control loop. The opto-coupler is radiation hardened and is

especially selected for space applications.

For the SMHF dual output models, cross regulation is maintained

by tightly coupled output magnetics. Up to 70% of the total output

power is available from either output, providing the opposite

output is simultaneously carrying 30% of the total output power.

Predictable current limit is accomplished by directly monitoring

The SMHF Series offers a new standard of performance for small

size and high power density. At just 0.33 inch high and a total

footprint of 1.7 in

, this low profile package offers a total power

density of up to 30 watts per cubic inch.

The SMHF converter’s feed-forward compensation system

provides excellent dynamic response and noise rejection. Audio

rejection is typically 50 dB. Typical output voltage response for

a 50% to 100% step load transient is as low as 1.3% with a 150

µS recovery time. Input ripple current is typically 35 mA p-p with

output ripple voltage typically 50 mV p-p .

SMHF converters provide an inhibit terminal that can be used

to disable internal switching, resulting in no output and very low

quiescent input current. The converter is inhibited when a logic

low (≤0.8 – output disabled) is applied to the inhibit pin. The

unit is enabled when the pin, which is internally connected to a

pull-up resistor, is left unconnected or is connected to an open-

collector gate. The open circuit output voltage associated with the

inhibit pin is 8.5 to 12 VDC. In the inhibit mode, a maximum of

4 mA must be sunk from the inhibit pin at 28 VDC input.

oiSe

, H

igH

uDio

ejection

onverter

eSign

nHibit

unction

Crane Aerospace & Electronics

Electronics group (Interpoint Brand)

PO Box 97005 • Redmond WA 98073-9705

425.882.3100 • electronics@craneae.com

www.craneae.com

Page 1 of 15

Rev D - 20070404

Cleared by U.S. DoD OSR for Public Release

OSR case number 09S-0995, dated March 13, 2009.

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