MFL2805DSLASH883 datasheet(2/14 Pages) INTERPOINT

2 / 14 page

Figure 1: SenSe connectionS anD trim table – Single output moDelS

SenSe anD trim

Single output models provide sense to maintain voltage at the

load. The converters output voltage can also be trimmed up. See

Figure 1.

current Sharing anD parallel operation

For increased power parallel up to 3 converters. The maximum

recommended power is 70% of the total available power. Multiple

MFL converters may be used in parallel to drive a common

load. Only single output models with SENSE and SNS RTN can

be used in the share mode. 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) of the master unit.

Figure 2 on page 3 shows the typical setup for two or three

units in parallel.

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 pins (pin 9), per Figure 2 on page

In current sharing mode, the converters function as a current

source. For this reason it is important that their outputs be

connected to the common ground at all times to prevent an

excessively high voltage at their outputs.

REMOTE SENSE CONNECTION

–

28V

–

Inhibit

Sync In

OUTPUT VOLTAGE ADJUST CONNECTION

28V

–

Inhibit

Sync In

Positive Input

Input Common

TRI

INH1

Sync Out

Sync In

MSTR/INH2

Slave

Pos. Sense

Sense Return

Output Common

Positive Output

Positive Input

Input Common

TRI

INH1

Sync Out

Sync In

MSTR/INH2

Slave

Pos. Sense

Sense Return

Output Common

Positive Output

–

VOuT INCREaSE

Ra (Ω)

VOLTS

3.3 V

5 V

12 V

15 V

0.1

0.2

131

153

0.3

196

230

0.4

262

307

109

0.5

349

396

139

109

Notes

1. When using remote sense for voltage

compensation or when using remote sense

for trim, the output will drift over temperature.

Contact applications Engineering for more

information powerapps@crane-eg.com.

2. do not exceed the maximum rated power.

MFL single and dual dc-dc converters

28 VoLt input - 65 Watt

www.craneae.com/interpoint

Page 2 of 14

MFL Rev ad - 2016.02.19

Crane Aerospace & Electronics Power Solutions

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