Interpoint MFLHP2812D/ES Dc/dc converters 28 volt input Datasheet

FEATURES
•
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•
•
•
•
•
•
•
•
•
•
•
DC/DC CONVERTERS
28 VOLT INPUT
–55° to +100°C operation
19 to 40 VDC input
Fully Isolated
Magnetic feedback
Fixed frequency, 600 kHz typical
Topology – Single Ended Forward
80 V for up to 50 ms transient protection
Inhibit function – input and output
Sync function – input and output
Output trim on single output models
Indefinite short circuit protection
Remote sense on single output models
Up to 87% efficiency
Parallelable up to 228 watts
MFLHP SERIES
100 WATT
MODELS
VDC OUTPUT
SINGLE
5
12
15
DUAL
±5
±12
±15
Size (max.): 3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16 mm)
See Section B8, case U1, for dimensions.
Weight:
100 grams maximum
Screening: Standard or ES. See Section C2 for screening options,
see Section A5 for ordering information.
DESCRIPTION
The MFLHP Series™ 28 volt DC/DC converters are rated up to 100
watts output power over a –55° to +100°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 paralleled for total
power of up to 270 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 67 watts per cubic inch.
DESIGN FEATURES
The MFLHP Series converters are switching regulators that use a
quasi-square wave, single ended forward converter design with a
constant switching frequency of 600 kHz.
Isolation between input and output circuits is provided with a transformer in the forward path and wide bandwidth magnetic coupling in
the feedback control loop. The MFLHP Series uses a unique dual
loop feedback technique that controls output current with an inner
feedback loop and 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.
Tight load regulation is achieved through a wide-bandwidth
magnetic feedback circuit. The output voltage on single MFLHP
models can be easily trimmed by adding an external resistor. (See
Figure 1 for voltage changes with different resistor values.)
INHIBIT
The MFLHP Series converters have two TTL compatible inhibit
terminals (INH1 and INH2) that can be used to disable power
conversion, resulting in a very low quiescent input current. An open
collector TTL compatible low (<0.8 volts) is required between INH1
(pin 4) and Input Common (pin 2) to inhibit the converter. An open
collector TTL compatible low (<0.5 volts) is required between INH2
(pin 12) and Output Common (pin 8) to inhibit the converter. The
application of intermediate voltages to these pins (1.5 to 10.5 volts)
should be avoided.
CURRENT SHARING AND PARALLEL OPERATION
Multiple MFLHP 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 MFLHP converters. In current
sharing mode, one MFLHP 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 synchronizing 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).
When paralleled, 76% of the total combined power ratings of the
MFLHP converters are available at the load. Overload and short
circuit performance are not adversely affected during parallel
operation.
B2-19
MFLHP SERIES
100 WATT
DC/DC CONVERTERS
ABSOLUTE MAXIMUM RATINGS
Input Voltage
• 19 to 40 VDC
Power Dissipation (Pd)
• 20 watts
Output Power
• 80 to 100 watts depending on model
Lead Soldering Temperature (10 sec per lead)
• 300°C
Storage Temperature Range (Case)
• –65°C to +150°C
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
• 19 to 40 VDC continuous
• 80 V for 50 msec transient
Case Operating Temperature (Tc)
• –55 to +100°C full power
• –55 to +135°C absolute
Derating Output Power/Current
• Linearly from 100% at 100°C to 0% at 135°C
TYPICAL CHARACTERISTICS
SYNC IN AND INHIBIT (INH1, INH2)
Sync In (525 to 675 kHz)
• Duty cycle 40% min, 60% max
• Logic low 0.8 V max
• Logic high 4.5 V min
• Referenced to input common
• If not used, connect to input common
Sync Out - Referenced to input common
Inhibit (INH1, INH2) TTL Open Collector
• Logic low (output disabled)
Current –10 to –5 mA
INH1 referenced to input common
Logic low 0.8 V max
INH2 referenced to output common
Logic low 0.5 V max
• Logic high (output enabled)
Open collector
Output Voltage Temperature Coefficient
• 100 ppm/°C typical
Input to Output Capacitance
• 150 pF typical
Isolation
• 100 megohm minimum at 500 V
Audio Rejection
• 50 dB typical
Conversion Frequency
• Free run mode 600 kHz typical
550 kHz min, 650 kHz. max
• External sync range 525 to 675 kHz
Inhibit Pin Voltage (unit enabled)
• INH1 = 9 to12 V, INH2 = 6 to 9 V
PINS NOT USED
TR1, Master, and Slave
If not used, leave unconnected
Electrical Characteristics: –50°C to +100°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
SINGLE OUTPUT MODELS
MFLHP2805S
PARAMETER
OUTPUT VOLTAGE
OUTPUT CURRENT
CONDITION
25°C
VIN = 19 to 40 VDC
OUTPUT POWER
MIN
4.95
0
TYP MAX
5.00 5.05
—
16
MFLHP2815S
MIN TYP MAX
14.85 15.00 15.15
0
— 6.67
UNITS
VDC
A
VIN = 19 to 40 VDC
0
—
80
0
—
90
0
—
100
OUTPUT RIPPLE
VOLTAGE 10 k - 2 MHz
LINE REGULATION
Tc = 25°C
Tc = –55°C to +100°C
VIN = 19 to 40 VDC
—
—
—
15
30
0
35
75
20
—
—
—
30
45
0
75
125
20
—
—
—
30
45
0
85
150
20
LOAD REGULATION
INPUT VOLTAGE
NO LOAD TO FULL
NO LOAD TO FULL
CONTINUOUS
TRANSIENT1 50 ms
—
19
—
0
28
—
20
40
80
—
19
—
0
28
—
20
40
80
—
19
—
0
28
—
20
40
80
mV
VDC
V
NO LOAD
FULL LOAD
INHIBITED - INH1
INHIBITED - INH2
—
—
—
—
70
3.6
9
35
120
3.73
14
70
—
—
—
—
50
3.8
9
35
80
3.95
14
70
—
—
—
—
50
4.2
9
35
80
4.40
14
70
mA
A
10 kHz - 10 MHz
Tc = 25°C
POWER DISSIPATION
SHORT CIRCUIT
RECOVERY
—
77
15
80
50
—
—
83
15
86
50
—
—
84
15
87
50
—
mA pp
%
—
—
15
1.5
20
4
—
—
15
1.5
20
4
—
—
15
1.5
20
4
W
ms
50% – 100% – 50%
TRANSIENT
RECOVERY3
—
—
350
1.5
450
3.0
—
—
450
1.5
700
3.0
—
—
450
1.5
700
3.0
mV pk
ms
19 – 40 – 19 VDC
TRANSIENT4
RECOVERY3
—
—
250
200
400
300
—
—
250
200
400
300
—
—
250
200
400
300
mV pk
µs
DELAY
OVERSHOOT
—
—
3.5
0
6
25
—
—
3.5
0
6
50
—
—
3.5
0
6
50
ms
mV pk
INPUT CURRENT
INPUT RIPPLE
CURRENT
EFFICIENCY
LOAD FAULT2
Tc = 25°C
STEP LOAD RESP.
STEP LINE RESP.
START-UP
Notes
1. Unit will shut down above approximately 45V but will be undamaged and
will restart when voltage drops into normal range.
2. Indefinite short circuit protection not guaranteed above 100°C case.
B2-20
MFLHP2812S
MIN TYP MAX
11.88 12.00 12.12
0
—
7.5
W
mV p-p
mV
mA
3. Recovery time is measured from application of the transient to point at
which Vout is within 1% of final value.
4. Transition time ≥ 10 µs.
MFLHP SERIES
100 WATT
DC/DC CONVERTERS
Electrical Characteristics: –55°C to +100°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
DUAL OUTPUT MODELS
PARAMETER
OUTPUT VOLTAGE
Tc = 25°C
CONDITIONS
+VOUT
–VOUT
MFLHP2805D
MIN TYP MAX
4.95 5.00 5.05
4.92 5.00 5.08
MFLHP2812D
MIN TYP MAX
11.88 12.00 12.12
11.82 12.00 12.18
MFLHP2815D
MIN TYP MAX
14.85 15.00 15.15
14.77 15.00 15.23
OUTPUT CURRENT1
EACH OUTPUT
0
—
11.2
0
—
5.3
0
—
4.67
VIN = 19 TO 40 VDC
TOTAL
0
—
16.0
0
—
7.5
0
—
6.67
EACH OUTPUT
0
—
56
0
—
63
0
—
70
TOTAL
0
—
80
0
—
90
0
—
100
OUTPUT POWER
VIN = 19 TO 40 VDC
OUTPUT RIPPLE
VOLTAGE
UNITS
VDC
A
W
10 kHz - 2 MHz
+VOUT
—
25
125
—
50
150
—
50
200
–VOUT
—
25
125
—
50
150
—
50
200
LINE REGULATION
+VOUT
—
0
50
—
0
50
—
0
50
VIN = 19 TO 40 VDC
–VOUT
—
25
100
—
25
100
—
25
100
LOAD REGULATION
NO LOAD TO FULL
+VOUT
–VOUT
—
—
0
25
50
100
—
—
10
50
100
200
—
—
10
50
100
200
mV p-p
mV
mV
CROSS REGULATION
SEE NOTE 2
—
6
8
—
2
4
—
2
4
Tc = 25°C
SEE NOTE 3
—
3
6
—
2
4
—
2
4
CONTINUOUS
TRANSIENT4 50 ms
NO LOAD
FULL LOAD
INHIBITED - INH1
INHIBITED - INH2
19
0
—
—
—
—
28
—
50
3.6
9
35
40
80
120
28
—
50
3.8
9
35
40
80
100
14
70
19
0
—
—
—
—
28
—
550
4.2
9
35
40
80
100
14
70
19
0
—
—
—
—
14
70
mA
—
77
15
80
50
—
—
83
15
86
50
—
—
84
15
87
50
—
mA p-p
%
—
—
15
1.5
20
4.0
—
—
15
1.5
20
4.0
—
—
15
1.5
20
4.0
W
ms
STEP LOAD
RESPONSE ± VOUT
10 kHz - 10 MHz
BALANCED LOAD
POWER DISSIPATION
SHORT CIRCUIT
RECOVERY
50 %–100%– 50% LOAD
TRANSIENT
—
350
450
—
450
700
—
450
700
mV pk
—
1.5
3.0
—
1.5
3.0
—
1.5
3.0
ms
STEP LINE
RESPONSE ± VOUT
RECOVERY6
19 – 40 – 16 VIN
TRANSIENT7
—
250
400
—
250
400
—
250
400
mV pk
RECOVERY6
DELAY
—
—
200
3.5
300
6
—
—
200
3.5
300
6
—
—
200
3.5
300
6
µs
ms
OVERSHOOT
—
0
25
—
0
50
—
0
50
mV p
INPUT VOLTAGE
NO LOAD TO FULL
INPUT CURRENT
Tc = 25°C
INPUT RIPPLE
CURRENT
EFFICIENCY 25°C Tc
LOAD FAULT5
Tc = 25°C
START–UP
Notes
1. Up to 70% of the total output power is available from either output providing
the opposite output is simultaneously carrying 30% of the total power.
2. Effect on the
negative output under the following conditions:
+Pout 30% to 70%; –Pout 70% to 30%
3. Effect on the
negative output under the following conditions:
+Pout 50%; –Pout 10% to 50%
%
VDC
V
mA
A
4. Unit will shut down above approximately 45V but will be undamaged and
will restart when voltage drops into normal range.
5. Indefinite short circuit protection not guaranteed above 100°C case.
6. Recovery time is measured from application of the transient to point at
which Vout is within 1% of final value.
7. Transition time ≥ 10 µs.
B2-21
MFLHP SERIES
100 WATT
DC/DC CONVERTERS
SINGLE OUTPUT MODELS CONNECTION DIAGRAMS - SENSE AND PARALLEL
28V
+
–
Inhibit
1
Positive Input
2
Input Common
3
TR1
4
INH1
5
6
Sync In
MSTR/INH2 12
Slave 11
Pos. Sense 10
9
Sense Return
Sync Out
Output Common
Sync In
Positive Output
–
8
7
+
RL
REMOTE SENSE CONNECTION
28V
+
–
1
Positive Input
2
Input Common
3
4
Inhibit
5
6
Sync In
TR1
INH1
Sync Out
Sync In
MSTR/INH2 12
11
Slave
10
Pos. Sense
9
Sense Return
8
Output Common
7
Positive Output
RA
–
+
RL
OUTPUT VOLTAGE ADJUST CONNECTION
FIGURE 1: SENSE CONNECTIONS AND TRIM TABLE
28V
Inhibit
+
–
1
Positive Input
2
Input Common
3
TR1
4
5
Sync In
6
INH1
MSTR/INH2 12
Slave 11
Pos. Sense
MASTER
Sync Out
Sense Return
Output Common
Sync In
Positive Output
10
9
7
CONNECT ONLY WHEN 2 SLAVES ARE USED
1
Positive Input
2
Input Common
3
TR1
4
INH1
5
Sync Out
6
Sync In
1
Positive Input
2
Input Common
3
TR1
4
INH1
5
Sync Out
6
Sync In
SLAVE 1
MSTR/INH2 12
Slave 11
Pos. Sense 10
Sense Return 9
Output Common 8
Positive Output
7
MSTR/INH2 12
Slave 11
Pos. Sense 10
Sense Return 9
Output Common 8
SLAVE 2
Positive Output
7
FIGURE 2: PARALLEL CONNECTIONS
B2-22
–
8
+
RL
DC/DC CONVERTERS
MFLHP SERIES
100 WATT
PIN OUT
Pin
1
2
3
4
5
6
7
8
9
10
11
12
Single Output
Positive Input
Input Common
Triple (TRI)
Inhibit 1 (INH1)
Sync Out
Sync In
Positive Output
Output Common
Sense Return
Positive Sense
Slave
Master / Inhibit 2
(MSTR/INH2)
Dual Output
Positive Input
Input Common
Triple (TRI)
Inhibit 1 (INH1)
Sync Out
Sync In
Positive Output
Output Common
Negative Output
No connection
Slave
Master / Inhibit 2
(MSTR/INH2)
Angled corner indicates pin one.
1
12
2
11
TOP VIEW
MFLHP
(Pin side, marked side)
3
4
10
9
5
8
6
7
See Section B8, case U1 for dimensions.
Pin 6 should be connected to input common if
external sync (Sync In) is not used.
Sense pins must be connected to their respective
outputs if not used.
FIGURE 3: PIN OUT
MODEL NUMBERING KEY
MFLHP 28 05 S / ES
Base Model
Input Voltage
Output Voltage
Number of Outputs
(S = single, D = dual)
Screening
(Standard screening has no designator
in this position.)
Typical Performance Curves: 25°C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified.
90
90
19V
28V
75
40V
70
65
60
10
60
10
30
50
70
90
40V
70
65
Output (Watts)
28V
80
75
19V
85
Efficiency (%)
80
90
19V
85
Efficiency (%)
Efficiency (%)
85
28V
80
75
70
40V
65
30
50
70
90
60
10
30
50
70
90 100
Output Power (Watts)
Output Power (Watts)
MFLHP2805S & MFLHP2805D
Efficiency
MFLHP2812S & MFLHP2812D
Efficiency
MFLHP2815S & MFLHP2815D
Efficiency
FIGURE 4
FIGURE 5
FIGURE 6
B2-23
DC/DC CONVERTERS
MFLHP SERIES
100 WATT
Typical Performance Curves: 25°C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified.
0.
100mV/div.
100% to 50%
Vout
100mV/div.
40.
60.
20V/div.
80.
100.
0.1
1
10
50 µs/div
19 to 40 V
100
Frequency (kHz)
MFLHP Series Audio Rejection
1ms/div
MFLHP2805S Step Load Response
MFLHP2805S Step Line Response
FIGURE 9
FIGURE 8
20V/div.
FIGURE 7
20V/div.
50% to 100%
Vin
Vin
50% to 100%
Vin
200mV/div.
Attenuation (dB)
20.
100mV/div.
1V/div.
+Vout
Vout
100% to 50%
–Vout
1ms/div
No Load
50 µs/div
19 to 40 V
MFLHP2805S Turn On Response
MFLHP2815D Step Line Response
FIGURE 10
1ms/div
MFLHP2815D Step Load Response
FIGURE 12
FIGURE 11
+Vout
–Vout
1ms/div
No Load
MFLHP2815D Turn On Response
19
6
MFLHP2805S & 5D
MFLHP2805D
Input Voltage (Volts)
VIN
–Vout Voltage Change (%)
5V/div.
20V/div.
8
4
2
MFLHP2812D
0
–2
MFLHP2815D
–4
–6
–8
30
B2-24
MFLHP2815S
& 15D
17
MFLHP2812S & 12D
40
50
60
70
Output Load (%)
+Pout 70 to 30 %, –Pout 30 to 70%
Cross Regulation
FIGURE 13
18
FIGURE 14
20222-001-DTS Rev A
DQ# 1002
All technical information is believed to be accurate, but no responsibility is assumed
for errors or omissions. Interpoint reserves the right to make changes in products
or specifications without notice. MFLHP Series is a trademark of Interpoint.
Copyright © 1995-1999 Interpoint. All rights reserved.
16
30
40
50
60
70
80
Output Power (Watts)
Low Line Dropout
FIGURE 15
90 100
CASES
CASE U
Angled corner indicates pin one
1.505 max (38.23)
CASE U
TOP VIEW
(PIN SIDE)
See Figures 55 and 56 for dimensions
3.005 (76.33) max.
Note: Pins are shown for Case U1.
Materials
Header Cold Rolled Steel/Nickel/Gold
Cover Kovar/Nickel
Pins
#52 alloy/Gold
compression glass seal
Case dimensions in inches (mm)
Tolerance ±0.005 (0.13) for three decimal places
±0.01 (0.2) for two decimal places
unless otherwise specified
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.
FIGURE 54: CASE U MAXIMUM DIMENSIONS
B8-36
CASES
CASE U
TOP VIEW CASE U1
MFL Series and MHP Series: Screening – Standard, ES or 883
MFLHP Series, FMD270 EMI Filter, and FMD28-461SL EMI Filters:
Screening – Standard or ES
SMFL, SMFLHP, SMHP, and SSP Series; SFCS, and SFME EMI Filters:
Screening – Standard, Class H or K
HUM70 Module and LCM Module: Screening – Standard or ES
Seam Seal
Angled corner
indicates pin one.
0.23 (5.8) Lead Length
0.128 dia
(3.25).
1.505 (38.23) max.
0.040 dia
(1.02)
1.380 (35.05)
1.250 (31.75)
1
12
1.050 (26.67)
2
11
0.850 (21.59)
3
10
0.650 (16.51)
4
9
0.450 (11.43)
5
8
0.250 (6.35)
6
7
0.220 (5.59
0.050 (1.27)
0.000
0.400 (10.16) max.
2.880 (73.15)
3.005 (76.33) max.
2.750 (69.85)
0.000
0.120 (3.05)
0.250 (6.35)
0.120 (3.05)
0.000
FIGURE 55: CASE U1
B8-37
QA SCREENING
125°C PRODUCTS
125°C PRODUCTS
TEST (125°C Products)
STANDARD
/ES
/883 (Class H)*
PRE-CAP INSPECTION
Method 2017, 2032
yes
yes
yes
TEMPERATURE CYCLE (10 times)
Method 1010, Cond. C, -65°C to 150°C
Method 1010, Cond. B, -55°C to 125°C
no
no
no
yes
yes
no
CONSTANT ACCELERATION
Method 2001, 3000 g
Method 2001, 500 g
no
no
no
yes
yes
no
BURN-IN
Method 1015, 160 hours at 125°C
96 hours at 125°C case (typical)
no
no
no
yes
yes
no
FINAL ELECTRICAL TEST MIL-PRF-38534, Group A
Subgroups 1 through 6: -55°C, +25°C, +125°C
Subgroups 1 and 4: +25°C case
no
yes
no
yes
yes
no
HERMETICITY TESTING
Fine Leak, Method 1014, Cond. A
Gross Leak, Method 1014, Cond. C
Gross Leak, Dip (1 x 10-3)
no
no
yes
yes
yes
no
yes
yes
no
FINAL VISUAL INSPECTION
Method 2009
yes
yes
yes
Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534.
*883 products are built with element evaluated components and are 100% tested and guaranteed over
the full military temperature range of –55°C to +125°C.
Applies to the following products
MOR Series
MHD Series
MFLHP Series
MHV Series
MFL Series
MHF+ Series
MHP Series
MHF Series**
MTR Series
MGA Series
MQO Series**
MSA Series
MGH Series
MCH Series
FM-704A EMI Filter
FMD**/FME EMI Filter
FMC EMI Filter
FMH EMI Filter
FMGA EMI Filter
FMSA EMI Filter
HUM Modules**
LCM Modules**
LIM Modules
**MFLHP Series, MQO Series, MHF Series, FMD EMI Filters, Hum Modules, and LCM Modules do not offer
‘883” screening.
C2-10
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