Datasheet > SMD-5962-94568

SMD-5962-94568

更新时间： 2022-11-24 21:40:20

品牌	Logo	应用领域
其他 - ETC		转换器
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14页	187K
描述
Hybrid - High Reliability DC/DC Converters

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SMD-5962-94568 数据手册

AHF2800 Series

Hybrid - High Reliability

DC/DC Converters

DESCRIPTION

The AHF Series of DC/DC converters feature

single or dual outputs over the full military

temperature range. No derating in output power is

required, making them suitable for use in rugged

military applications. The low profile, small outline

package is ideally suited to the tight board space

requirements of many industrial and aerospace

applications. Designed for nominal 28VDC inputs,

this family of converters will meet the

requirements of MIL-STD-704D. The basic circuit

utilizes a pulse width modulated, feed-forward

topology at a nominal switching frequency of 550

KHz. Input to output isolation is achieved through

the use of transformers in the forward and

feedback circuits.

FEATURES

■ 16 - 40 VDC input range

(28 VDC nominal)

■ Single and dual outputs

■ 12 watts output power

■ 22.8 W/in³power density

■ Low input/output noise

(50 mA/60 mV p-p max. respectively)

■ Indefinite short circuit and overload

protection

■ Wideband control loop for superior

transient characteristics

■ No derating for -55°C to +125°C

operation

The proprietary magnetic feedback circuit provides

for an extremely wide bandwidth control loop with

a high phase margin. The closed loop frequency

response of this converter family extends to

approximately 50 kHz, resulting in superior line

and load transient characteristics. This feedback

method is also inherently temperature and

radiation insensitive. This gives the AHF Series an

important advantage over converters that

■ Constant switching frequency

(550 kHz nominal)

incorporate opto-couplers in their design.

These converters are manufactured in a facility

certified to MIL-PRF-38534. All processes used to

manufacture these converters have been qualified

to enable Lambda Advanced Analog to deliver

compliant devices. Four screening grades are

available to satisfy a wide range of requirements.

The CH grade converters are fully compliant to

MIL-PRF-38534 class H. The HB grade

converters are processed to full MIL-PRF-38534

screening but do not have class H element

evaluation as required by MIL-PRF-38534. Two

grades are fully tested and operate over the full

military temperature range without derating of

output power. Industrial and commercial grades

are also available. Variations in electrical,

mechanical and screening can be accommodated.

Extensive computer simulation using complex

modeling enables rapid design modification to be

provided. Contact Lambda Advanced Analog with

specific requirements.

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