Datasheet > MFL2815D

MFL2815D

更新时间： 2024-11-19 11:54:15

品牌	Logo	应用领域
CRANE		转换器输出元件输入元件局域网
页数	文件大小	规格书
13页	210K
描述
MFL Single and Dual DC/DC Converters

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MFL2815D 技术参数

生命周期：	Contact Manufacturer	包装说明：	, FLANGE MT,1.5X3.0
Reach Compliance Code：	compliant	ECCN代码：	EAR99
风险等级：	5.55	Is Samacsys：	N
其他特性：	-15V ADDITIONAL OUTPUT AVAILABLE	模拟集成电路 - 其他类型：	DC-DC REGULATED POWER SUPPLY MODULE
效率（主输出）：	87%	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-CDMA-F12	JESD-609代码：	e4
最大电网调整率：	0.208%	最大负载调整率：	0.666%
功能数量：	1	输出次数：	2
端子数量：	12	最高工作温度：	125 °C
最低工作温度：	-55 °C	最大输出电流：	4.34 A
最大输出电压：	15.45 V	最小输出电压：	14.55 V
标称输出电压：	15 V	封装主体材料：	CERAMIC, METAL-SEALED COFIRED
封装等效代码：	FLANGE MT,1.5X3.0	封装形状：	RECTANGULAR
封装形式：	MICROELECTRONIC ASSEMBLY	保护：	CURRENT; OUTPUT OVER VOLTAGE; INPUT LOW VOLTAGE
认证状态：	Not Qualified	子类别：	Other Analog ICs
表面贴装：	YES	技术：	HYBRID
温度等级：	MILITARY	端子面层：	GOLD
端子形式：	FLAT	端子位置：	DUAL
最大总功率输出：	65 W	微调/可调输出：	NO
Base Number Matches：	1

MFL2815D 数据手册

Crane Aerospace & Electronics Power Solutions

MFL Single and Dual DC/DC Converters

28 VOLT INPUT – 65 WATT

FEATURES

• –55° to +125°C operation

• 16 to 40 VDC input

• Fully Isolated

• Magnetic feedback

• Fixed frequency, 600 kHz typical

• Topology – Single Ended Forward

• 50 V for up to 120 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

3.3

• Up to 87% efficiency / 43 W/in

• Parallelable up to 148 watts

Other output voltages

available upon request,

including 2 V, 8 V and

54 V single.

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 148 watts. 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.

SYNC

Converters may be synced to an external clock (525 to 675 kHz) or

to one another by using the sync in or out pins. The nominal free-

run switching frequency is 600 kHz.

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.

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).

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 constant frequency, pulse-width modulated converters use a

quasi-square wave single-ended forward design. Tight load regula-

tion 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).

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.

Crane Aerospace & Electronics

Page 1 of 13

Rev D - 20060601

Electronics Group (Interpoint Brand)

PO Box 97005 • Redmond WA 98073-9705

425.882.3100 • electronics@craneae.com

www.craneae.com

12 3 4 5 6 7...13

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MFL2815S	CRANE	获取价格	DC/DC CONVERTERS 28 VOLT INPUT
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