INTERPOINT MFP0507S

Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
maximum Flexible Power (MFP) in a Single 7 Amp point of load.
A Use-Anywhere Power solution for digital and non-digital systems.
Features
No external components required
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Operating temperature -70° to +150°C
Cold start at -90°C
Up to 92% efficiency, flat down to 30% load
Qualified up to MIL-PRF-38534 Class K
Radiation hardness assurance (RHA) up to
level F, 300 kRad(Si) TID, available on request
Input voltage range 3.0 to 6.0 VDC
Input transient survivability to 15 VIN for up to 1 sec.
Inhibit and sync functions
Current monitoring
Current sharing pin for parallel operation
Five pin-selectable, preset voltages:
-- 0.64, 0.8, 1.6, 2.5 and 3.3
-- Output voltage continuously adjustable
from 0.64 to 3.5 V with resistors
Indefinite output short circuit protection
Adjustable start-up sequencing
Remote sense and voltage margining
Internal solid state power switch provides many benefits
including inrush current limiting
History of proven performance
Interpoint, a Crane Co. Company, was issued its first standard
microcircuit drawing (SMD) for a Class H hybrid in 1992. Our first
Class K hybrid SMD was issued in 1997 and we were one of the
first companies to certify manufacturing to Class K. Our Redmond
site has a DSCC approved Radiation Hardness Assurance (RHA)
plan. Our products are on DSCC SMDs with RHA “P”, “R,” or “F”
code for 30, 100 and 300 kRad(Si), respectively.
Crane Aerospace & Electronics
Electronics Group (Interpoint Brand)
PO Box 97005 • Redmond WA 98073-9705
425.882.3100 • [email protected]
www.craneae.com/interpoint
Description
The MFP Series™ of DC/DC converters do not require any
external components to achieve all specified performance
levels. They are a high-reliability, high-efficiency point of load
converter for use with a 3.3 VDC input bus or a 5 VDC input
bus. The MFP0507S model has the flexibility to be set for
any output voltage from 0.64 VDC to 3.5 VDC. The converter
operates from an input of 3.0 to 6.0 VIN with an undervoltage
shutdown at 2.75 V, an overvoltage shutdown of 8.5 V and up
to a 15 V transient for up to 1 second.
The non-isolated, feature-rich MFP uses a Buck converter
design with synchronous rectification. The design allows the
unit to operate synchronously to no output load, ensuring
high efficiency at the lightest loads without switching off the
synchronous devices. Important features include a solid state
switch, inrush current limiting, synchronization with an external
system clock and the ability to current share allowing multiple
devices to supply a common load.
The MFP includes an internal house keeping supply that is
active at inputs as low as 2 VDC and provides a boosted and
regulated voltage supply for internal use. This internal supply
is one of the reasons that this product can provide full power
at very high efficiency at input voltages as low as 3 VDC. No
external power source or external bias is required.
The MFP converters are designed for the large, fast transient
load currents typical to digital loads. See Figure 4 for a
typical connection diagram. The MFP Series is intended to be
powered by a fully regulated power source.
US Patents
Interpoint converters may use one or more of the following US
patents 5,521,807, 5,694,303 and 5,631,822.
Page 1 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
Table of Contents
Electrical Characteristics Tables
Table 1: Absolute Maximum Ratings . . . . . . . . . . . . . . . . . 3
Table 2: Input Specifications . . . . . . . . . . . . . . . . . . . . . 3
Table 3: Output Specifications . . . . . . . . . . . . . . . . . . . . 4
Figure 1: Efficiencies . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin Out
Table 4: MFP0507S Pin Out . . . . . . . . . . . . . . . . . . . . . 7
Model Numbering Key . . . . . . . . . . . . . . . . . . . . . . . .
7
Mechanical Information . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 2: MFP0507S Case Dimensions . . . . . . . . . . . . . . . . 8
Thermal and Mounting Considerations . . . . . . . . . . . . . . . . . . 9
Figure 3: Infrared Image of MFP . . . . . . . . . . . . . . . . . . . 9
Table 5: Chomeric Material Specifications, Thermal Pad . . . . . . 10
Pin Functions and Applications
Figure 4: Typical Connection Diagram . . . . . . . . . . . . . . . 11
Pin 1: ENABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Pin 4: SYNC . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12
Table 6: ENABLE Capacitance for Sequencing . . . . . . . .
12
Figure 5: ENABLE and SYNC Equivalent Circuit . . . . . . . . . 12
Pins 2 and 3: +V IN and VIN Common . . . . . . . . . . . . . . . . 13
Figure 6: Input Voltage vs Maximum Output Voltage . . . . . . 13
Pin 5: Remote SENSE . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 7: SENSE Pin Voltage Margining . . . . . . . . . . . . . 14
Pin 6: SHARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 8: Typical Share Connection . . . . . . . . . . . . . .
15
Pins 7 and 8: TRIM A and TRIM B . . . . . . . . . . . . . . . . . 16
Table 7: User Configurable Output Voltages . . . . . . . . . . 16
Pins 9 and 10: VOUT Common and +VOUT . . . . . . . . . . . . . 16
Figure 9: Maximum Rated Output Current . . . . . . . . . . . 16
Performance Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figures 10 and 11: Input Ripple Current . . . . . . . . . . . . . . . 17
Figures 12 and 13: Output Ripple Voltage . . . . . . . . . . . . . 17
Figures 14 and 15: Load Transient Response . . . . . . . . . . . 17
Figure 16: SHARE as Monitor for Output Current . . . . . . . . .
17
Figure 17: Operating Frequency vs Temperature and VIN . . . . . 17
Screening Tables
Screening Table 1: Element Evaluation . . . . . . . . . . . . . . . 18
Screening Table 2: Environmental Screening . . . . . . . . . . .
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Page 2 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
19
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
Electrical Characteristics: -55 to +125°C TC, 5 VDC VIN (VIN NOM), 100% load, free run, unless otherwise specified.
Table 1: Absolute Maximum Ratings
Parameter
Condition
Symbol
Min
Typ
Max
Units
Operating Temperature
All
-70
—
+150
°C
Storage Temperature
All
TC
—
+155
°C
—
TSTG
-90
Maximum Weight
—
—
—
23
grams
—
—
—
300
°C
Lead Soldering Temperature 1
10 seconds max
Table 1, Note 1. Caution: Heat from reflow or wave soldering may damage the device.
Solder pins individually with heat application not exceeding 300°C for 10 seconds per pin.
TAble 2: Input SpecificationS
Parameter
Input Voltage Range
Input Under Voltage
Lockout
Input Current
State
Condition
External
Synchronization
Switching Frequency
8.5
6.0
6
VIN TRAN
8.5
—
15
V
—
6
—
2.2
2.5
3.0
VDC
VIN = 3 V
—
IIN
—
180
230
110
140
—
IIN
—
VIN = 3 V
IIN
—
105
120
IIN
—
50
65
1.6
—
2.3
2.2
—
—
VPIN 1
—
—
1.5
IPIN 1
—
—
4
—
—
VIN = 6 V
—
VIN = 6 V
—
Pin 1 Open
5
VIN 3 to 6 V
ENABLE Pin Current
Unit Disabled
5
VIN 3 to 6 V
VIN
VPIN 1
Standard
Frequency Range
—
5
—
270
—
330
Extended
Frequency Range 2
—
—
—
270
—
600
VDC
mA
VDC
mA
kHz
Amplitude
—
—
—
3.0
5.0
6.0
V
Duty Cycle
—
—
—
40
50
60
%
Frequency Source
Impedance
—
—
—
—
—
1.5
kOhms
-55 to +125°C
—
17
—
280
—
330
-70 to +150°C
—
17
—
270
—
340
Table 2, Notes:
1. 50 microsecond minimum transition time.
2. Efficiency may be reduced by up to 2% at full load due to switching losses.
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Units
5.0
Transient 1
Threshold
Unit Disabled
Max
3.3 or 5.0
6
Threshold
Unit Enabled
Typ
0
6
—
Open Circuit Voltage
Min
3.0
—
Operating
No Load
Symbol
VIN
Continuous
Disabled
Enable/Disable (Pin 1)
Input
Figure
Page 3 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
kHz
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
Electrical Characteristics: -55 to +125°C TC, 5 VDC VIN (VIN NOM), 100% load, free run, unless otherwise specified.
TAble 2: Input SpecificationS
Parameter
(Continued)
State
Power Dissipation
Condition
No Load
Full Load
—
Fault Power
Output Short
Input Ripple Current
V1 (0.8V)
VIN = 3
20 Hz - 20 MHz
V1 (0.8V)
VIN = 6 V
V4 (3.3V)
20 Hz - 20 MHz
IRMS
Average
Figure
Symbol
Min
—
—
—
—
0.7
—
—
—
1.24
1.83
—
—
—
—
2.5
—
200
—
—
200
_
—
200
—
—
60
—
mARMS
Min
Typ
Max
Units
—
—
—
IIN-RIP
—
—
Figure
Symbol
Typ
Max
Units
W
mA p-p
TAble 3: OUTPUT SpecificationS
Parameter
Operating Voltage
Accuracy
State
Condition
V1 0.8, 25°C
0.778
V1 0.8, -55 to +125°C
4
V1 0.8, -70 to +150°C
Callout 1
V2 1.6, -55 to +125°C
4
V2 1.6, 25°C
V2 1.6, -70 to +150°C
50% Load
V3 2.5, -55 to +125°C
Callout 1
V4 3.3, 25°C
V4 3.3, -55 to +125°C
4
V4 3.3, -70 to +150°C
V1, V2, V3, V4
Line Regulation
-70 to +150°C
VOUT
-55 to +125°C
Total Regulation
VOUT (Calculated)
-55 to +125°C
V 1, V 2, V 3, V 4
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Callout 1
V2
V3
1.550
1.634
1.600
—
VIN 3 to 6 V
—
1.666
2.548
2.500
50% Load to Full
—
2.403
2.598
3.360
—
3.300
3.175
-70 to +150°C
Page 4 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
VDC
VDC
20
—
—
—
3.393
VDC
3.426
20
mV
TBD
—
VR TOTAL
2.573
3.241
VR LOAD
VR LINE
1.650
1.534
2.428
VDC
0.838
—
IO 50% Load to Full
0.830
2.453
3.208
25°C
-70 to +150°C
0.800
0.762
V4
25°C
-55 to +125°C
V1, V2, V3, V4
Callout 1
4
V3 2.5, -70 to +150°C
VOUT
0.770
1.566
V3 2.5, 25°C
Load Regulation
V1
0.822
20
—
—
20
mV
TBD
-3.00
±1.5
3.00
-4.00
±2.5
4.00
%
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
Electrical Characteristics: -55 to +125°C TC, 5 VDC VIN (VIN NOM), 100% load, free run, unless otherwise specified.
TAble 3: OUTPUT SpecificationS (Continued)
Parameter
State
Output Ripple
25°C
and Noise
V1, V2, V3, V4
Output Current
Condition
-55 to +125°C
20 Hz to 20 MHz
12 and 13
-70 to +150°C
Symbol
VOUT-RIP
V1 0.8, -55 to +125°C
V1 0.8, -70 to +150°C
V2 1.6, -55 to +125°C
V2 1.6, -70 to +150°C
Output Power
Figure
VIN = 3 to 6 V
9
IOUT
—
30
60
—
40
80
0
—
7.0
0
—
6.0
0
—
6.4
—
4.0
—
5.0
V3 2.5, -70 to +150°C
0
—
4.0
V4 3.3, -55 to +125°C
0
—
5.0
V4 3.3, -70 to +150°C
0
—
4.0
0
—
5.6
V1 0.8, -70 to +150°C
0
—
4.8
V1 0.8, -55 to +125°C
9
VIN = 3 to 6 V
POUT
0
—
10.2
0
—
6.4
0
—
12.5
V3 2.5, -70 to +150°C
0
—
10.0
0
—
16.5
V4 3.3, -70 to +150°C
0
—
13.2
—
—
5000
66.7
73
—
63.5
—
—
—
—
—
80.4
84
—
78.4
—
—
V4 3.3, -55 to +125°C
—
—
V1 0.8, 25°C
V1 0.8, -55 to +125°C
—
1
V1 0.8, -70 to +150°C
V2 1.6, 25°C
V2 1.6, -55 to +125°C
V2 1.6, -70 to +150°C
V3 2.5, 25°C
V3 2.5, -55 to +125°C
1
—
1
V3 2.5, -70 to +150°C
V4 3.3, 25°C
V4 3.3, -55 to +125°C
1
V4 3.3, -70 to +150°C
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50
0
V3 2.5, -55 to +125°C
Efficiency
Max
25
0
V2 1.6, -55 to +125°C
External Load
Typ
—
V3 2.5, -55 to +125°C
V2 1.6, -70 to +150°C
Capacitance
Min
—
EFF1
EFF2
EFF3
EFF4
Page 5 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
—
—
—
86.8
89
—
85.4
—
—
—
—
—
89.5
92
—
88.5
—
—
—
—
—
Units
mV p-p
A
W
µF
%
%
%
%
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
Electrical Characteristics: -55 to +125°C TC, 5 VDC VIN (VIN NOM), 100% load, free run, unless otherwise specified.
TAble 3: OUTPUT SpecificationS (Continued)
Parameter
State
Turn On Peak
Enable
Deviation
V1, V2, V3, V4
Turn On Settling Time
Condition
Figure
Symbol
Min
Typ
Max
—
—
—
—
50
—
50
Step Start
VIN 0 to VIN-NOM
Release of Inhibit/Enable
IIN 0 to Max
Step Start
VIN = 0 to 6 V
VIN 3.3V (settle to 2%)
IO 50 - 100%
14 and 15
Load Transient Peak
Deviation
VIN 3.3V (settle to 2%)
IO 50 - 100%
14 and 15
V1, V2, V3, V4
Output Voltage Trim
V1, V2, V3, V4
VIN 5V (settle to 2%)
@ 1 A / µs
to 2%,
V1, V2, V3, V4
Output Load
Transient Response
VIN 5V (settle to 2%)
—
@ 1 A / µs
Positive Output
difference from
VOUT to VSENSE
Voltage Margining
Positive Output
difference from
VOUT to VSENSE
Sequence Time Delay
—
—
4
7
—
—
4
7
—
—
—
250
—
—
—
250
—
—
—
250
—
—
250
mV pk
ms
µs
mV pk
See Table 7 in the Pin 7 and 8, TRIM section
—
Remote Sense
—
—
Units
—
4
—
—
—
0.20
VDC
—
—
—
—
—
0.20
VDC
See Table 6 in the PIn 1, ENABLE section
95
90
85
5 VIN 3.3 VOUT
5 VIN 2.5 VOUT
3.3 VIN 1.6VOUT
3.3 VIN 0.8 VOUT
Efficiency
80
75
Refer to “Table 3: Output
Specifications” for maximum
output currents.
70
65
60
55
50
0
0.5
1
1.5
2
2.5
3
Output Current
3.5
4
Figure 1: Efficiencies
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Page 6 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
4.5
5
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
pin Out
Pin
Number
Designation
Function
If Pin is not
Used
1
ENABLE
Enable, provides remote turn
on and off
Leave open
2
+V IN
Positive Input
Always used
3
V IN COM
Input Common
Always used
4
SYNC
Synchronization
Leave open
5
SENSE
Sense, voltage drop
compensation
Connect to +
VOUT pin 10
6
SHARE
Current Share, parallel operation, or current monitor
Leave open
7
TRIM A
Preset Output Voltage and
Trim
See Figure 4
and Table 7
8
TRIM B
Preset Output Voltage and
Trim
See Figure 4
and Table 7
9
V OUT COM
Output Common (also
SENSE Return)
Always used
10
+V OUT
Positive Output
Always used
Table 4: MFP0507S Pin Out
model numbering key
Maximum Flexible Power
Nominal Input Voltage
MFP
05 07 S
V 1 / KR
Output Current
Number of Outputs
(S = single)
Case Option
(leave blank for standard case,
add V for downleaded case 1 )
Screening and RHA
(ST, WT, 883, HP, HR, KP, KR, or KF
see screening tables 1 and 2 for
more information)
Model Numbering Key Note:
1. Downleaded case V is a future option which will be announced when available.
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Page 7 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
mechanical Information
TOP VIEW CASE D3
MFP Series Single
0.972 (24.69)
1
0.822 (20.88)
2
0.672 (17.07)
0.522 (13.26)
3
10
5
8
9
4
0.372 (9.45)
0.222 ±0.010
(6.54 ±.025)
1.200 max
(30.48)
7
6
1.200 max
(30.48)
Seam seal 0.346 max. (8.79)
0.040 ±0.002 dia.
(1.02 ±.05)
0.240 ±0.010
(6.10 ±0.25)
Flatness of base: 0.003 inch per inch
11 x 0.190 (4.83)
Figure 2: MFP0507S Case Dimensions
Size (nominal)
•Single 1.195 x 1.195 x 0.340
Materials
•Header - Cold Rolled Steel / Nickel
•Cover - Kovar/Nickel
•Pins - 3:1 Cu Cored alloy 52/Gold over Nickel
•Compression glass seal
Case dimensions in inches (mm) Tolerance
±0.005 (0.13) for three decimal places. ±0.01 (0.3)
for two decimal places unless otherwise specified. Please refer to the numerical dimensions for
accuracy.
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Page 8 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
Thermal and Mounting Considerations
Thermal Considerations
The MFP is designed to be mounted close to the pointof-use which, in many cases, may be on a printed circuit
board. The high efficiency of the MFP reduces the issues
normally associated with the converter’s internal dissipation.
The maximum internal dissipation occurs when the product
is configured as a 3.3 volt output at full load. This condition
will result in a dissipation of not more than 1.83 watts. This
dissipation is nearly uniformly distributed over the base area of
1.4 square inches. Full load power loss is largely independent of
output voltage, for instance at 0.8 volts and full load the internal
power loss maximum is again 1.83 watts.
In order to determine the cooling or heat sinking requirements in
the application, the maximum product power dissipation should
be calculated from the product efficiency and output power.
Graphs and tabled values in the specification table can be used
to find the efficiency given the input voltage, selected output
voltage and output load. The internal dissipation, difference
between output and input power, can be calculated from the
equation below.
where:
POUT = output power
ɛ = efficiency
PDISS = POUT (1 -
Many applications will not require special efforts at cooling,
however, this depends on ambient temperatures, adjacent
components, and other factors.
If product cooling is required for safe operation convention and/
or conduction can be used. Thermal considerations require that
the base of the MFP be maintained at a safe temperature of less
than the maximum rating. All components internal to the MFP
are bonded to the metal base of the package. The base is the
surface that is important if conduction cooling is used. It is a good
practice to bond the device to the PCB or mounting surface with
a thermally conductive pad. Such pads provide some degree of
conduction cooling to the mounting surface depending on the
amount of voiding at the interface. In the case of the side leaded
MFP package, this thermal pad will firmly locate the device to the
surface so that the lead connections only manage the electrical
requirements and not the mechanical requirements.
In Figure 3 below, the thermal rise internal to the MFP can
be seen to be only 6°C. This low thermal rise gives the end
user more flexibility in board design options to meet applicable
derating guidelines.
ε) / ε
F = thermal resistance of converter attachment to board
∆ T = PDISS x
F
TCASE = TBASE - ∆ T
MFP
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Figure 3: Infrared Image,
Full Load with 6 VIN, 3.3 VOUT
at
Page 9 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
Thermal and Mounting Considerations (cont.)
Mounting Considerations
Interpoint recommends Chomeric’s double-sided adhesive
materials for attachment of the MFP to a circuit board or metal
surface.
Because of the MFP’s efficiency the thermal characteristics of the
Chomeric materials are not required even though the Chomeric
material provides good thermal conductivity.
The following information refers to products attached using
Chomeric double-sided adhesive.
Vibration Testing
The MFP was tested in Random vibration using both the T1680
and T404 to mount the units to an aluminum vibration fixture.
Testing was performed to the most severe level in MIL-STD-883
Method 2026; Condition 2, Letter K, overall GRMS 51.1, for 15
minutes per axis, 3 axes and passed. No mounting detachment
occurred.
Application
Recommended size for the adhesive tapes is 1.18 x 1.18 inches.
Application of the tapes is a matter of peeling the release liners
and attaching to the MFP and circuit board respectively. See
Chomeric’s data sheets and application notes for details. The
T404 material does require higher application pressure. The
T1680 material is specifically made for low pressure attachment
of hybrids, ceramic and flat packages.
Removal
Refer to Chomeric’s application notes for Thermattach Tape.
Specifications
Refer to Table 5: Chomeric Material Specifications for thermal
conductivity, temperature range and out-gassing.
Table 5: Chomeric Material Specifications
Thermal
Conductivity
Temperature
Range
Outgassing Data
W/m-K
°C
%TML/%CVCM
CHO-THERM 1671
(Note 2)
2.6
-60 to +200
0.76
0.07
Rougher surfaces
CHO-THERM T1680
(Note 1)
0.65
-60 to +200
1.27
0.23
Smooth surfaces
THERMATTACH T404
(Note 1)
0.4
-30 to +125
None
Smooth surfaces
Material
Table 5, Notes:
1. Chomeric’s Thermattach Tape T404 and Cho-Therm T1680
are two excellent choices for circuit board mounting. Both
have a Kapton insulating barrier with pressure sensitive
adhesive (PSA) on both sides.
www.craneae.com/interpoint
Mounting
Application
2.Chomerics Cho-Therm 1671 is a good choice for mounting on
rougher surfaces. This material has a fiberglass barrier with
PSA on one side. It can be obtained with PSA on both sides
if needed.
Page 10 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
Pin Functions and Applications
1 EN
CT1
+
2 + V IN
–
3 V IN COM
VIN DC
3
4 SYNC IN
+
3.3 V _
Load
+
2.5 V _
Load
+
1.2 V _
Load
V OUT COM 9
TRIM B 8
6 SHARE
TRIM A 7
1
MFP Single
POL Converter
2 + V IN
3 V IN COM
4 SYNC IN
+V OUT 10
V OUT COM 9
5 SENSE
TRIM B 8
6 SHARE
TRIM A 7
1 EN
CT3
MFP Single
POL Converter
2 + V IN
3 V IN COM
4 SYNC IN
+V OUT 10
V OUT COM 9
5 SENSE
TRIM B 8
6 SHARE
TRIM A 7
1 EN
CT4
12.7 k
MFP Single
POL Converter
2
2 + V IN
IOUT
Monitoring
3 V IN COM
4 SYNC IN
5
4
+V OUT 10
5 SENSE
1 EN
CT2
MFP Single
POL Converter
+V OUT 10
+
0.8 V _
Load
V OUT COM 9
5 SENSE
TRIM B 8
6 SHARE
TRIM A 7
External ENABLE
Figure 4: Typical Connection Diagram
using
ENABLE, TRIM, SENSE,
For more information:
1 2 Pins 7 and 8, TRIM section
3
Pin 5, Remote SENSE section
4
Pin 1, ENABLE section, sequencing. Table 6 lists CT values.
Pin 6, SHARE section
and IOUT
5
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Page 11 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
Monitoring
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
Pin Functions and Applications
Pin 1: ENABLE Function
The MFP provides an enable pin that will allow normal power
conversion to occur if left open or unconnected. The ENABLE pin
allows remote turn-on and turn-off control of the MFP. Connecting
this pin to ground will disable power conversion, resulting in no
output voltage and greatly reduced current consumption. The
MFP ENABLE function will work with an open collector device
connected to the pin or with a logic high voltage from a digital
device as long as the logic high voltage is greater than the
minimum voltage listed in the specification for enabled operation.
The enable pin is active high at > 0.8 V or with a floating input.
Sequencing: The start-up of the MFP can be delayed with the
addition of an external capacitor connected to the ENABLE
pin. This feature is useful in sequencing the start-up of multiple
point of load converters in a system requiring a specific startup
sequence for various low-voltage loads. The startup delay is
roughly equal to 1 millisecond per microfarad of capacitance.
More precise external capacitance values can be found in Table
6 where it can be seen that there is a variation in startup delay
time as the input voltage varies. The listed delay is from the
beginning of application of power to the beginning of internal
power conversion. There will be an additional delay as the power
converter begins a normal start-up sequence and ramps to final
output voltage.
Pin 4: SYNC
The MFP includes a synchronization feature, a key capability
in low noise system design. The internal conversion oscillator
can be synchronized with a system clock or with a bus voltage
source. The MFP is designed to synchronize with a 300 kHz
system but can be synchronized with sources up to 600
kHz, a frequency range used by many DC/DC converters. A
synchronized system prevents the generation of low frequency
sub harmonics in the audio range. The synchronization input
amplitude can range from 3 VDC to 6 VDC. Figure 17 illustrates
the relationship between operating frequency, temperature and
input voltage.
The external synchronization timing cycle can be varied cycle
to cycle for systems employing spread-spectrum clocking or for
slave sharing clock interleaving. The DC level of the sync pin (pin
4) can be used to detect the state of the input voltage protection
switch.
UNDER VOLTAGE
/ OVER VOLTAGE
PROTECTION
ENABLE 1
2.2 k
22.1 k
+ V IN 2
Figure 5: ENABLE and SYNC
Equivalent Circuit
Case
V IN COM
10
DC/DC
220 µF
330 µF
9
3
Case
V OUT COM
Case
HOUSEKEEPING
5.11 k
SYNC IN 4
+V OUT
CONTROL
CLOCK
Table 6: Enable Capacitance Values
for
Start-Up Delay
Enable Capacitance: Delay from Enable Release to Start of Output rise (25°C)
Units
CAPACITANCE (CT)
0.22
0.33
0.47
0.68
1.0
1.5
2.2
3.3
4.7
6.8
10
µF
VIN 3.3 V
0.8
1.1
1.6
2.2
3.1
4.6
6.7
1.0
14.1
20.2
29.7
ms
VIN 5.0 V
0.4
0.5
0.7
0.9
1.3
1.8
2.6
3.9
5.5
7.8
11.4
ms
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Page 12 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
Pin Functions and Applications
VIN Common
Input Voltage
The input voltage range for normal operating conditions is 3.0 to
6.0 VDC (Figure 6). For input ripple current see page 17, Figures
10 and 11.
The VIN Common pin is connected to VOUT Common and case
ground. The input and output should share the same ground
plane in the power system design.
Additional Input Block Features
Input Under and Over Voltage Protection
The MFP includes a solid state switch on the input section. This
switch opens for fault conditions including input voltages below
the minimum and transient voltages above the maximum. The
safe operating range includes ground and extends to 8.5 VDC
indefinitely and up to 15 volts as a time limited transient. The
switch will only close when certain internal conditions are met,
including the proper operation of the internal housekeeping
supply and a safe input voltage range.
No Single Point Failure
The solid state switch (SSS) can be used to provide one
additional level of reliability: “no single point failure” will result in a
connection from input voltages to output loads. The SSS can be
opened by grounding of the ENABLE Pin. The status of the SSS
can be determined by detecting the voltage on the SYNC pin. A
logic low on this pin indicates that the SSS is open.
No External Bias Required
An internal housekeeping supply that is active at inputs as low
as 2 VDC provides a boosted and regulated voltage supply for
internal use. This internal supply is one of the reasons that this
product can provide full power at very high efficiency at input
voltages as low as 3 VDC. No external power source or external
bias is required.
Input Reflected Noise and Inrush Current Limit
Substantial input capacitance is included and the input solid state
switch previously described is designed to provide associated
inrush current limiting. The substantial input capacitance and
high SSS provide a “pi” filter configuration that results in very
low reflected ripple current. The very low input noise and inrush
limiter make the MFP unique among point of load converters.
3.4
3.3
3.0
2.5
Operating
Input
2.0
1.6
1.5
1.0
0.8
0.64
0.5
0
0
1.0
2.0
Figure 6: Input
www.craneae.com/interpoint
2.75 3.3
3.0
Input Voltage (V)
voltage vs
Page 13 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
4.25
4.0
5.0
6.0
Safe Input, Output Disabled
and
Safe Input, Output Shutdown Region
3: +VIN
Under Voltage Shutdown
and
Output Voltage (V)
Pins 2
8.5
Maximum Output Voltage
15.0
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
Pin Functions and Applications
Pin 5: SENSE
The MFP includes a positive remote sense. The SENSE pin is
intended to be used to maintain the desired preset voltage at the
point-of-use by connecting the remote sense to the +Vout supply
in close proximity to the load. Up to 0.3 volts of power line drop
can be accommodated. If the SENSE pin lead is not connected
to the output positive power pin, the output will rise a total of 0.4
volts.
If connections have no voltage drop, the formula for the resistor
is
RX =
[
The output voltage can be margined upward from the preset
value as much as 0.2 volts by the addition of a resistor between
the positive SENSE pin and the output power pin. The amount
of increase in the output voltage by margining will reduce the
available remote sense range by the same amount. The sum of
margined voltage and voltage sense drop must be less than 0.2
volts.
1000
(0.2697)
(VOUT - 3.3)
-1
]
in ohms
+VOUT Pin 10
SENSE Pin 5
Sense margining can be used to adjust VOUT from 3.3 to 3.5.
Connections must be made as close as possible to Common and
to RX. This method uses the SENSE pin’s voltage compensation
function to raise the output voltage. Therefore, there will not be
an option to compensate for voltage drop at the load.
TRIM A Pin 7
TRIM B Pin 8
+
Rx
VOUT
-
VOUT COM Pin 9
Figure 7: SENSE Pin Voltage Margining,
VOUT from 3.3 to 3.5 1, 2
Figure 7, Notes:
1. For external connections see page 11, “Figure 4: Typical Connection
Diagram.”
2. See page 16, “Table 7: User Configurable Outputs” for output
voltages from 0.64 to 3.3.
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Page 14 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
Pin Functions and Applications
Pin 6: SHARE
The MFP includes a current share feature that allows multiple
units to operate as a single supply capable of providing a total
current that is the sum of the maximum from each of the units
that are operated in parallel. In connecting units in parallel, the
SHARE pin is connected between units and all but one unit, the
master, will have TRIM A and TRIM B pins tied to the positive
SENSE pin. The master will have the TRIM pins configured for
the desired output voltage while the other units in parallel will
match the current and voltage of the master unit.
Two connections are critical to sharing between two units. The
SHARE pins of the two (or more) units must be tied together
and the TRIM A and TRIM B outputs must be tied together
and shorted to +Vout and SENSE for each unit that is not the
Master. The master unit will be the one with the highest pre-set
output voltage. In the case of Figure 8, callout 3, the master is
configured with both TRIM pins open for a 0.8 V output.
The SHARE pin can be used as an output current monitor
because the voltage on this pin is proportional to unit current.
See page 11, Figure 4, callout 5. The SHARE pin can be used
to drive an MFP as a voltage controlled current source where
the output current will be proportional to the applied voltage with
an offset. Output currents corresponding to SHARE pin voltages
are shown in Figure 16: SHARE as Monitor for Output Current.
Connections for current monitoring are also shown in Figure 4.
1
DC/DC Converter
1 EN
MFP Single
POL Converter
2 + V IN
MASTER
+V OUT 10
3 V IN COM
+ V IN
V IN COM
INHIBIT
+V OUT
5 SENSE
TRIM B 8
6 SHARE
TRIM A 7
V OUT COM
1 EN
SYNC IN
SYNC OUT
2
MFP Single
POL Converter
2 + V IN
SLAVE
3 V IN COM
+V OUT 10
V OUT COM 9
4 SYNC IN
System
Clock
For more information:
1 Pin 1, ENABLE section
2 Pin 4, SYNC section
3
V OUT COM 9
4 SYNC IN
5 SENSE
TRIM B 8
6 SHARE
TRIM A 7
3
Pins 7 and 8, SHARE
section above
Figure 8: Typical Share Connection
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with
Optional Sync
Page 15 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
+ LOAD —
+
V IN DC
–
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
Pin Functions and Applications
and
8: TRIM A
and
TRIM B
Pins 9
Output Voltage Set and Adjustment
The MFP0507S, single output model has the flexibility to be
set for any voltage from 0.64 to 3.3 VDC. The MFP includes
five precision set-points that can be accomplished with pin
connections alone and no trim resistor. An open circuit on both
TRIM pins results in a 0.80 VDC output, grounding one or the
other or both pins results in precise output voltages of 1.6 VDC,
2.5 VDC or 3.3 VDC. One other preset voltage is possible using
the SENSE pin (pin 5). Connecting both trim pins to the positive
SENSE pin results in 0.64 VDC. In-between values of output
voltage can be set with the use of external trim resistors in series
with the trim pins to ground.
Any voltage intermediate to the pre-set voltages is available by
adding a trim resistor between Common and both TRIM pins.
Table 7 lists available pin-configurable and adjust/trim output
voltages.
Output Voltage using pin configurations
or Trim resistors
Desired Voltage
0.64
Pin Configurable
TRIM Resistor (RT) 1
from ground to pin 7
and 8
Fixed
SENSE
pin Vs
Both pins 7 and 8
connected to SENSE
pin 5
—
Both pins 7 and 8 open
–
0.9
Fixed
V1
Adjust
–
57.6 k
1.0
Adjust
–
27.4 k
1.2
Adjust
–
12.7 k
1.5
Adjust
–
6.19 k
1.6
Fixed
V2
TRIM A, pin 7 open.
TRIM B, pin 8 grounded
—
—
3.57 k
2.61 k
0.8
1.8
Adjust
2.0
Adjust
—
2.5
Fixed
V3
TRIM A, pin 7
grounded.
TRIM B, pin 8 open
3.3
Fixed
V4
Both pins 7 and 8
grounded
10: +VOUT
and
VOUT Common
See page 17, Figures 11 and 12 for typical output ripple plots.
Maximum Possible Overload Current
8.5
8.0
Operation not Specified or
Guaranteed in this Region
7.0
Normal Operating Region
6.0
5.0
VIN= 3.0V
V =
IN
6.0
V
V =
IN
5.0
V
VIN= 4.0V
4.0
0
0.64
1.0
1.5
2.0
2.5
3.0
3.5
Output Voltage (V)
Figure 9: Maximum Rated Output Current
—
Table 7, Notes:
1. Formula for RT in Table 7 for VOUT below 3.3 and above 0.8 V:
—
6.031
RT =
- 2.4 in kOhms
VOUT - 0.804
Table 7: User Configurable Output Voltages 1, 2
www.craneae.com/interpoint
and
Due to the Buck topology, the required output voltage of the
MFP must always be at least 0.8 V lower than the input. Precise
values of achievable output voltages and currents as a function
of VIN are shown on page 15, Figure 8.
Output Current (A)
Pins 7
2. See page 14, “Figure 7 SENSE Pin Voltage Margining, VOUT
from 3.3 to 3.5.”
Page 16 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
40 mV/div
100 mA/div
100 mA/div
Typical Performance Curves: 25°C TC, 5 VDC VIN, 100% load, free run, unless otherwise specified.
1 µs/div
5 VIN, 3.3 VOUT, 5 A load
1 µs/div
3.3 VIN, 1.2 VOUT, 5 A load
1 µs/div
3.3 VIN, 1.2 VOUT, 5 A load
MFP0507S Input Ripple (IIN)
MFP0507S Input Ripple (IIN)
MFP0507S Output Ripple
Figure 11
Figure 12
100 mV/div
100 mV/div
40 mV/div
Figure 10
500 µs/div
1 µs/div
5 VIN, 3.3 VOUT, 5 A load
500 µs/div
3.3 VIN, 1.2 VOUT, 5 A load
5 VIN, 3.3 VOUT, 5 A load
MFP0507S Load Transient
MFP0507S Output Ripple
MFP0507S Load Transient
Figure 14
Figure 13
SHARE as Monitor for Output Current
Figure 15
Operating Frequency vs Temperature and Input Voltage
5.0
320 KHz
Operating Frequency
Output Current (A)
318 KHz
4.0
3.0
2.0
1.0
0
VOUT
= 0.8V
0
0.50
VOUT
= 1.6V
1.0
VOUT
= 2.5V
VOUT
= 3.3V
1.5
2.0
SHARE Voltage (V)
Figure 16: SHARE as Monitor
for Output Current
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316 KHz
314 KHz
312 KHz
310 KHz
Vin=6V
308 KHz
306 KHz
Vin=5V
304 KHz
Vin=3V
Vin=4V
302 KHz
2.5
300 KHz
-80°
-40°
0°
40°
Temperature
Figure 17: Operating Frequency
vs
80°
120°
Temperature
and
160° C
VIN
This graph illustrates the performance of proprietary Interpoint technology
Page 17 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
MIL-PRF-38534 Element Evaluation
Component-Level Test
Performed
/St and /WT
non-QML 1
M/S 2
Element Electrical
P3
n
/883 and /H
Class H
QML
/K
Class K
QML
M/S 2
P3
M/S 2
P3
n
n
n
n
Element Visual
n
n
n
n
Internal Visual
n
n
Temperature Cycling
n
n
Constant Acceleration
n
n
Interim Electrical
n
Burn-in
n
Post Burn-in Electrical
n
Steady State Life
n
Voltage Conditioning Aging
n
Visual Inspection
n
Final Electrical
n
n
n
n
Wire Bond Evaluation
n
n
n
n
SEM
n
SLAM™/C-SAM: Input capacitors only
Add’l test, not req. by H or K
n
Notes:
1. Non-QML products do not meet all of the requirements of MIL-PRF-38534.
2. M/S = Active components (Microcircuit and Semiconductor Die)
3. P = Passive components
Definitions:
Element Evaluation: Component testing/screening per MIL-STD-883 as determined by MIL-PRF-38534
SEM: Scanning Electron Microscopy
SLAM™: Scanning Laser Acoustic Microscopy
C-SAM: C - Mode Scanning Acoustic Microscopy
Screening Table 1: Element Evaluation
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Page 18 of 19
MFP0507S Technical Preview Rev D - 2010.11.18
Technical Preview: Contains preliminary information
n
Crane Aerospace & Electronics Power Solutions
Maximum Flexible Power (MFP) Single Output Point of Load
Technical Preview: MFP0507S, 3 to 6 VDC In, 7 Amp, DC/DC Converter
Class H and K, MIL-PRF-38534 Environmental Screening
NON-QML 1
QML 2
Class H
/ST
TEST Performed
/WT
/883
Non-destruct bond pull, Method 2023
Pre-cap Inspection, Method 2017, 2032
n
Class K
/HP
/HR
/KP
/KR
/KF
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n3
n3
n3
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
Temperature Cycle (10 times)
Method 1010, Cond. C, -55°C to +150°C, ambient
Constant Acceleration
Method 2001, 3000 g (Qual 5000 g)
PIND, Test Method 2020, Cond. A
Pre burn-in test, Group A, Subgroups 1 and 4
Burn-in Method 1015, +125°C case, typical
4
96 hours
n
160 hours
2 x 160 hours (includes mid-BI test)
Final Electrical Test, MIL-PRF-38534, Group A,
Subgroups 1 and 4: +25°C case
n
Subgroups 1 through 6, -70°C, +25°C, +150°C case
n
Subgroups 1 through 6, -55°C, +25°C, +125°C case
n
n
n
n
n
n
Gross Leak, Method 1014, Cond. C
n
n
n
n
n
n
Fine Leak, Method 1014, Cond. A
n
n
n
n
n
n
n
n
n
n3
n3
n3
n
n
n
Hermeticity Test
Gross Leak, Dip (1 x 10-3)
n
n
Radiography, Method 2012
Post Radiography Electrical Test, +25°C case
Final visual inspection, Method 2009
n
n
5
RHA P: 30 kRad(Si) total dose
RHA R: 100 kRad(Si) total dose 5
RHA F: 300 kRad(Si) total dose
SEE LET 85
n
n
n
n
n
n
n
6
n
MeV-cm2/mg
n
n
n
n
n
Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534.
Notes:
1. /ST (standard) and /WT (wide temperature) are non-QML products may not meet all of the requirements of MIL-PRF-38534.
2. All processes are QMP qualified and performed by QMP qualified operators.
3. Not required by DSCC but performed to assure product quality.
4. Burn-in temperature designed to bring the case temperature to +125°C minimum.
5. Includes low dose rate to the rated total dose (TID)
6. LDR to 100k TID.
Screening Table 2: Environmental Screening
RHA options are available on request. Formal classification and jurisdiction are pending.
MFP Series Single, MFP0507S Technical Preview Rev D - 2010.11.18. This Technical Preview contains preliminary information. Interpoint reserves
the right to make changes in products or specifications without notice. MFP Series is a trademark of Interpoint. Copyright © 2010 Interpoint
Corporation. All rights reserved. www.craneae.com/interpoint
Page 19 of 19