MFW2812D/ES

更新时间： 2024-11-01 02:56:35

品牌	Logo	应用领域
CRANE		转换器模拟IC 信号电路输入元件局域网
页数	文件大小	规格书
9页	123K
描述
DC/DC CONVERTERS 28 VOLT INPUT

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MFW2812D/ES 技术参数

生命周期：	Not Recommended	包装说明：	, FLANGE MT,3.2X2.5
Reach Compliance Code：	compliant	ECCN代码：	EAR99
风险等级：	5.55	其他特性：	ADDITIONAL -12V OUTPUT AVAILABLE
模拟集成电路 - 其他类型：	DC-DC REGULATED POWER SUPPLY MODULE	效率（主输出）：	83%
最大输入电压：	40 V	最小输入电压：	19 V
标称输入电压：	28 V	JESD-30 代码：	R-XXMA-P10
JESD-609代码：	e3	最大电网调整率：	0.119%
最大负载调整率：	0.416%	功能数量：	1
输出次数：	2	端子数量：	10
最高工作温度：	125 °C	最低工作温度：	-55 °C
最大输出电流：	5.5 A	最大输出电压：	12.12 V
最小输出电压：	11.88 V	标称输出电压：	12 V
封装主体材料：	UNSPECIFIED	封装等效代码：	FLANGE MT,3.2X2.5
封装形状：	RECTANGULAR	封装形式：	MICROELECTRONIC ASSEMBLY
峰值回流温度（摄氏度）：	NOT SPECIFIED	保护：	CURRENT
认证状态：	Not Qualified	筛选级别：	MIL-PRF-38534
子类别：	Other Analog ICs	表面贴装：	NO
技术：	HYBRID	温度等级：	MILITARY
端子面层：	Tin (Sn)	端子形式：	PIN/PEG
端子位置：	UNSPECIFIED	处于峰值回流温度下的最长时间：	NOT SPECIFIED
最大总功率输出：	70 W	微调/可调输出：	NO
Base Number Matches：	1

MFW2812D/ES 数据手册

FEATURES

• –55°C to + 85°C operation

MFW SERIES

70 WATTS

DC/DC CONVERTERS

28 VOLT NPUT

• 19 to 40 VDC input

• Fully Isolated

• Optocoupler feedback

MODELS

VDC OUTPUT

• Fixed frequency, 245 kHz typical

• Topology – Push-Pull Forward

• 50 V for up to 50 ms transient protection

• Inhibit/sync function

SINGLE

DUAL

±12

±15

TRIPLE

+5 & ±12

+5 & ±15

• Indefinite short circuit protection

• Remote sense on single models

• Up to 84% efficiency

Size (max.): 3.20 x 2.46 x 0.595 inches (81.3 x 62.5 x 15.11 mm)

See Section B8, case L, for dimensions.

Weight:

140 grams typical

Screening: Standard or ES.See Section C2 for screening

options, see Section A5 for ordering information.

DESCRIPTION

WIDE VOLTAGE RANGE

The MFW Series™ of DC/DC converters offers up to 70 watts of

power from single, dual, or triple outputs in one package. Using

hybrid thick film technology a power density of over 20 watts per

cubic inch is achieved. These devices are packaged in hermetically

sealed cold rolled steel enclosures with a tin plate finish making

them ideal for use in military, aerospace, or other high reliability

applications. Unscreened models are guaranteed to pass a gross

leak test (maximum leak rate of 0.001 atm-cc/sec). Environmentally

screened units (designated by the /ES suffix) are hermetically solder

sealed. See Section C2 for screening specifications.

All models of the MFW Series are designed to provide full power

operation over an input voltage range of 19 to 40 VDC. Operation

below an input of 19 volts, including operation in MIL-STD-704E

emergency power conditions, is possible with derated output power.

Please refer to the derating information and the low voltage drop-out

graphs (Figures 10 and 11) on the following pages.

WIDE TEMPERATURE RANGE

Full load operation of any of the MFW Series converters is available

at case temperatures of –55°C to + 85°C. Operation up to +125°C

is possible with derated output power. The MFW Series converters

are provided in a flange mount case designed to facilitate the

removal of internally generated heat. Because of this, heat sinking

requirements are minimal. Sustained full power operation does

however require that an efficient heat sink be attached to the base-

plate. Please refer to the heat sink requirements section for more

information.

DESIGN METHODOLOGY

The MFW Series converters utilize a quasi-square wave forward

converter design with a nominal switching frequency of 245 kHz.

Isolation between input and output is provided with a transformer in

the forward power loop and a wideband, temperature insensitive

optical link in the feedback control loop. Output regulation is accom-

plished with constant frequency pulse width modulation. In addition,

the load regulation of the single output models is further enhanced

through the use of remote output voltage sense pins to overcome

the adverse effects of line resistance voltage drops. Short circuit

protection is provided by detecting peak primary switching current

on a cycle by cycle basis and limiting it to approximately 130% of the

full load input current. This method results in quick and positive

current limiting under short circuit conditions.

INHIBIT/SYNC FEATURE

Standard on all models of the MFW Series is a dual mode

inhibit/sync pin. This pin serves as both an output inhibit and as a

synchronization input. In the inhibit mode an open collector TTL

compatible low (<0.8 V) will disable internal switching thereby

inhibiting the unit's output. Inhibiting in this manner results in an

extremely low quiescent current. Since a pull-up resistor is included

internally, this pin may be left open should the inhibit function not be

desired.

LOW NOISE

The MFW Series converters offer low noise on both the input and

output lines. A two section, four pole LC input filter is included to

provide very low reflected line ripple current. Adherence to MIL-

STD-461C (CE03) is possible with the addition of the FMB-461 filter.

Output ripple is maintained at less than 50 mV p-p for single and

dual output models and 85 mV for triple output models.

In a digital system it is often desirable to synchronize the input or

output ripple with the system clock. For this reason each model of

the MFW Series was designed to synchronize with a system clock

applied to the inhibit/sync pin. Please refer to the technical data

section for timing details for the external sync feature.

B4-3

12 3 4 5 6 7...9

中文翻译

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与MFW2812D/ES相关器件

型号	品牌	获取价格	描述	数据表
MFW2812D_10	CRANE	获取价格	â55Â°C to 85Â°C operation 50 V for 50 ms t
MFW2812S	CRANE	获取价格	DC/DC CONVERTERS 28 VOLT INPUT
MFW2812S/ES	CRANE	获取价格	DC/DC CONVERTERS 28 VOLT INPUT
MFW2812T	CRANE	获取价格	â55Â°C to 85Â°C operation 50 V for 50 ms t
MFW2812T/ES	CRANE	获取价格	3-OUTPUT 60W DC-DC REG PWR SUPPLY MODULE, HERMETIC SEALED PACKAGE-10
MFW2815D	CRANE	获取价格	DC/DC CONVERTERS 28 VOLT INPUT
MFW2815D/ES	CRANE	获取价格	DC/DC CONVERTERS 28 VOLT INPUT
MFW2815S	CRANE	获取价格	DC/DC CONVERTERS 28 VOLT INPUT
MFW2815S/ES	CRANE	获取价格	DC/DC CONVERTERS 28 VOLT INPUT
MFW2815T	CRANE	获取价格	3-OUTPUT 60W DC-DC REG PWR SUPPLY MODULE, HERMETIC SEALED PACKAGE-10

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