SMFL2805D INTERPOINT [Interpoint Corporation Company], SMFL2805D Datasheet

SMFL2805D

Manufacturer Part Number

SMFL2805D

Description

Manufacturer

INTERPOINT [Interpoint Corporation Company]

Datasheet

1.SMFL2805D.pdf (15 pages)

Current page: 1 of 15
Download datasheet (788Kb)

Features

description

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

65 watts output power over a -55° 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 outputs. Current sharing allows the units to be paral-

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

sealed package is only 3.0 x 1.5 x 0.40 inches, giving the series

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

SMFL converters, also available on SMD drawings, offer the

following screening options: Space Prototype (O), Class H, or

Class K. Radiation tolerant to Radiation Hardness Assurance

(RHA) levels of “-” (O), “P,” or “R,” per MIL-PRF-38534. Interpoint

model numbers use an “O” in the RHA designator position to

indicate the “-” (dash) Radiation Hardness Assurance level of

MIL-PRF-38534, which is defined as “no RHA”. See Screening

Tables 1 - 3 for more information.

SMFL Series converters are switching regulators that use a

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

constant switching frequency of 600 kHz typical.

Isolation between input and output circuits is provided with a

transformer in the forward path and a wide bandwidth magnetic

coupling in the feedback control loop. The SMFL uses a unique

dual loop feedback 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

Crane Aerospace & electronics

electronics group (Interpoint Brand)

PO Box 97005 • Redmond WA 98073-9705

425.882.3100 • power@crane-eg.com

www.craneae.com/interpoint

creening

eSign

parallel operation with current share, up to 3 units

(148 watts)

•

Operating temperature -55° to +125°C

Qualified to MIL-PRF-38534 Class H and K

Radiation hardness assurance (RHA) to level R 100 kRad(Si)

Input voltage range 16 to 40 VDC

Transient protection 50 V for 120 ms

Fully isolated, magnetic feedback

Fixed high frequency switching

Remote sense and output trim on single output models

Inhibit function

Synchronization input and output

Indefinite short circuit protection

High power density, 85% efficiency

eatureS

sMFL single and dual dc/dc converters

OSR case numbers 09-S-0996 dated March 13, 2009 and 09-S-1960 dated June 22, 2009.

by the Department of Defense (DoD) Office of Security Review (OSR) for public release.

28 VoLt input – 65 Watt

The information in this document is a derivative of documents cleared

SMFL Rev K - 20101209

Page 1 of 15

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

regulation is achieved through a wide-bandwidth magnetic feed-

back circuit. The output voltage on single SMFL models can

be trimmed to a specific output voltage by adding an external

resistor (see Figure 1 for resistor values).

The SMFL Series converters have two inhibit terminals (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 active low (<0.8 volts) is required to inhibit

the converter between INH1 (pin 4) and Input Common (pin

2). An active low (<0.5 volts) is required to inhibit the converter

between INH2 (pin 12) and Output Common (pin 8). The appli-

cation of intermediate voltages to these pins (1.5 to 10.5 volts)

should be avoided.

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 (see Application Note

titled “Inhibit and Synchronization”).

Multiple single output SMFL converters may be used in parallel

to drive a common load. In this mode of operation the load

current is shared by two or three SMFL converters. In current

nhibit

ync

urrent anD

Crane Aerospace & Electronics Power Solutions

arallel

PeratiOn

SINgLe

3.3

VDc O

MODeLS

utPut

DuAL

±12

±15

±5

Related parts for SMFL2805D

SMFL2805D Summary of contents

Page 1

Features parallel operation with current share units (148 watts) • Operating temperature -55° to +125°C • Qualified to MIL-PRF-38534 Class H and K • Radiation hardness assurance (RHA) to level R ...

... Lead soldering temperature (10 sec per lead) • 300°C storage temperature range (case) • -65°C to +150°C power dissipation (pd) • 14 watts (16 watts SMFL2805S, SMFL2805D) case operating temperature (tc) • -55°C to +125°C full power derating output power/current • Linearly from 100% at 125° 135°C • ...

Page 3

ModeLs connection diaGraMs - triM, sense and paraLLeL 28V Inhibit Sync In 28V Inhibit Sync In F igure 28V Inhibit Sync In www.craneae.com/interpoint 28 VoLt input – 65 Watt 1 Positive Input ...

Page 4

Positive Input Positive Input 2 Input Common Input Common 3 Triple (TR1) Triple (TR1) 4 Inhibit 1 (INH1) Inhibit 1 (INH1) 5 Sync Out Sync Out ...

Page 5

... SMFL Rev K - 20101209 Crane Aerospace & Electronics Power Solutions sMd nuMbers S M SMFL S tandard icrocircuit d (SMd) S rawing iMiLar 5962R0621302KxC SMFL283R3S/KR 5962R9316302KxC SMFL2805S/KR 5962R9316202KxC SMFL2812S/KR 5962R9316102KxC SMFL2815S/KR 5962R9319102KxC SMFL2805D/KR 5962R9319302KxC SMFL2812D/KR 5962R9319202KxC SMFL2815D/KR . ___________ / 2 4 Case/Lead Screening 3 Options (u, leave blank erieS P art ...

Page 6

Characteristics: -55°C to +125°C Tc, 28 VDC Vin, 100% load, RHA level O, unless otherwise specified. SINgLe OuTPuT MODeLS Parameter OutPut VOltage OutPut current OutPut POWer OutPut riPPle ...

Page 7

SINgLe OuTPuT MODeLS Parameter OutPut VOltage OutPut current OutPut POWer OutPut riPPle line regulatiOn lOaD regulatiOn inPut VOltage inPut current inPut riPPle eFFiciency lOaD Fault SteP ...

Page 8

... Vout from 50%/50% loads to 70%/30% or 30%/70% loads. 5. effect on negative Vout from 50%/50% loads to 50% then 10% load on negative Vout. www.craneae.com/interpoint 28 VoLt input – 65 Watt 2 SMFL2805D MIN TYP MAx 4.85 5.00 5.15 OuT -V 4 ...

Page 9

... Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified 16V 80 28V 75 40V Output (Watts) SMFL2805S & SMFL2805D Efficiency F 4 igure Output Power (Watts) ...

Page 10

... VoLt input – 65 Watt V IN +Vout –Vout 1ms/div No Load SMFL2815D Turn On Response F 14 igure Page SMFL Rev K - 20101209 Crane Aerospace & Electronics Power Solutions 8 6 SMFL2805D 4 2 SMFL2812D 0 SMFL2815D – 2 – 4 – 6 – Positive Output Load (% of Total Load) ...

Page 11

Case Option position of model number. Angled corner indicates pin one. 1.505 (38.23) max. 1.380 (35.05) 1.250 (31.75) 1.050 (26.67) 0.850 (21.59) 0.650 (16.51) 0.450 (11.43) 0.250 (6.35) ...

Page 12

Case Option position of model number. Angled corner indicates pin one. 1.380 (35.05) 1.250 (31.75) 1.050 (26.67) 0.850 (21.59) 0.650 (16.51) 0.450 (11.43) 0.250 (6.35) 0.120 (3.05) 0.000 Case ...

Page 13

C H LASS AND COmpOnent-level test perFOrmed Element Electrical Element Visual Internal Visual Temperature Cycling Constant Acceleration Interim Electrical Burn-in Post Burn-in Electrical Steady State Life Voltage Conditioning Aging Visual Inspection Final Electrical Wire ...

Page 14

C H LASS AND end item-level test perFOrmed Non-destruct bond pull Method 2023 Pre-cap Inspection Method 2017, 2032 Temperature Cycle (10 times) Method 1010, Cond. C, -65°C to 150°C, ambient Constant Acceleration Method 2001, ...

Page 15

R ADIATION radiation hardneSS 1 aSSurance LeVeLS 3 O Standard, no radiation guarantee p Radiation tolerant– Tested lots kRad(Si) total dose. 4 SEU guarantee MeV-cm r Radiation tolerant– ...

Related keywords

SMFL2805D datasheet
SMFL2805D data sheet
SMFL2805D pdf datasheet
SMFL2805D component
SMFL2805D part
SMFL2805D distributor
SMFL2805D RoHS
SMFL2805D datasheet download