MFL2805S

更新时间： 2024-01-29 10:28:37

品牌	Logo	应用领域
CRANE		转换器输入元件
页数	文件大小	规格书
8页	182K
描述
DC/DC CONVERTERS 28 VOLT INPUT

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技术参数
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MFL2805S 技术参数

生命周期：	Contact Manufacturer	包装说明：	,
Reach Compliance Code：	unknown	ECCN代码：	EAR99
风险等级：	5.74	模拟集成电路 - 其他类型：	DC-DC REGULATED POWER SUPPLY MODULE
最大输入电压：	40 V	最小输入电压：	16 V
标称输入电压：	28 V	JESD-30 代码：	R-XDFM-P12
功能数量：	1	输出次数：	1
端子数量：	12	最高工作温度：	125 °C
最低工作温度：	-55 °C	最大输出电压：	5.13 V
最小输出电压：	4.87 V	标称输出电压：	5 V
封装主体材料：	UNSPECIFIED	封装形状：	RECTANGULAR
封装形式：	FLANGE MOUNT	表面贴装：	NO
技术：	HYBRID	温度等级：	MILITARY
端子形式：	PIN/PEG	端子位置：	DUAL
最大总功率输出：	50 W	微调/可调输出：	YES
Base Number Matches：	1

MFL2805S 数据手册

FEATURES

• –55° to +125°C operation

• 16 to 40 VDC input

• Fully Isolated

MFL SERIES

65 WATT

DC/DC CONVERTERS

28 VOLT INPUT

• Magnetic feedback

• Fixed frequency, 600 kHz typical

• Topology – Single Ended Forward

• 50 V for up to 50 ms transient protection

• Inhibit (input & output side)

• Sync function (in and out)

• Output trim on single output models

• Indefinite short circuit protection

• Remote sense on single output models

MODELS

VDC OUTPUT

SINGLE

DUAL

• Up to 87% efficiency / 43 W/in

• Parallelable up to 148 watts

Size (max): 3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16 mm)

Case U

Weight:

100 grams maximum

Screening: Standard, ES, or 883 (Class H).

DESCRIPTION

The MFL Series™ 28-volt DC/DC converters are rated up to 65

watts of output power over a –55°C to +125°C temperature range

with a 28 Vdc nominal input. On dual output models up to 70% of

the rated output power can be drawn from either the positive or

negative output. Current sharing allows the units to be paralleled for

total power of up to 148watts. The welded, hermetically sealed

package is only 3.005 x 1.505 x 0.400 inches, giving the series an

overall power density of up to 43 watts per cubic inch.

INHIBIT

The MFL Series converters have two TTL compatible inhibit termi-

nals (INH1 and INH2) that can be used to disable power conversion,

resulting in a very low quiescent input current and no generation of

switching noise. An open collector TTL compatible low (<0.8 volts)

is required to inhibit the converter between INH1 (pin 4) and Input

Common (pin 2). An open collector TTL compatible low (<0.5 volts)

is required to inhibit the converter between INH2 (pin 12) and Output

Common (pin 8). The application of intermediate voltages to these

pins (1.5 to 10.5 volts) should be avoided.

DESIGN FEATURES

The MFL Series converters are switching regulators that use a

quasi-square wave, single ended forward converter design with a

constant switching frequency of 600 kHz.

CURRENT AND PARALLEL OPERATION

Multiple MFL converters may be used in parallel to drive a common

load (see Figure 2). In this mode of operation the load current is

shared by two or three MFL converters. In current sharing mode,

one MFL converter is designated as a master. The SLAVE pin (pin

11) of the master is left unconnected and the MSTR/INH2 pin (pin

12) of the master is connected to the SLAVE pin (pin 11) of the slave

units. The units designated as slaves have the MSTR/INH2 pin (pin

12) connected to the SNS RTN pin (pin 9). Figure 2 shows the

typical setup for two or three units in parallel. Note that synchro-

nizing the units together (though shown in the figure) is not required

for current sharing operation. A second slave unit may be placed in

parallel with a master and slave; this requires the TRI pin (pin 3) of

the master unit to be connected to the SNS RTN pin (pin 9).

Isolation between input and output circuits is provided with a trans-

former in the forward path and a wide bandwidth magnetic coupling

in the feedback control loop. The MFL uses a unique dual loop feed-

back technique that controls output current with an inner feedback

loop and an output voltage with a cascaded voltage mode feedback

loop.

The additional secondary current mode feedback loop improves

transient response in a manner similar to primary current mode

control and allows for ease of paralleling, but without the cost and

complexity.

The cascaded constant frequency, pulse-width modulated

converters use a quasi-square wave single-ended forward design.

When paralleled, 76% of the total combined power ratings of the

MFL converters are available at the load. Overload and short circuit

performance are not adversely affected during parallel operation.

Tight load regulation is achieved through

a wide-bandwidth

magnetic feedback circuit. The output on single MFL models can be

trimmed (see Figure 1 for voltage changes with different resistor

values).

12 3 4 5 6 7 8

中文翻译

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与MFL2805S相关器件

型号	品牌	获取价格	描述	数据表
MFL2805S/883	CRANE	获取价格	MFL Single and Dual DC/DC Converters
MFL2805S/883	CRANE	获取价格	DC/DC CONVERTERS 28 VOLT INPUT
MFL2805S/ES	CRANE	获取价格	MFL Single and Dual DC/DC Converters
MFL2805S/ES	CRANE	获取价格	Analog Circuit, Hybrid,
MFL2805S/SX	CRANE	获取价格	Analog Circuit,
MFL2805SV	CRANE	获取价格	DC-DC REG PWR SUPPLY MODULE
MFL2812D	CRANE	获取价格	MFL Single and Dual DC/DC Converters
MFL2812D	CRANE	获取价格	DC/DC CONVERTERS 28 VOLT INPUT
MFL2812D/883	CRANE	获取价格	MFL Single and Dual DC/DC Converters
MFL2812D/883	CRANE	获取价格	DC/DC CONVERTERS 28 VOLT INPUT

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