MFC SERIES
FILTERED CONFIGURABLE DC/DC CONVERTERS
UP TO 30 WATTS
30 Watt Single Output Modules
ABSOLUTE MAXIMUM RATINGS
SYNC AND INHIBIT
TYPICAL CHARACTERISTICS
Sync (500 to 675 kHz)
• Duty cycle 40% min, 60% max
• Logic low 0.8 V max
• Logic high 4.5 V min, 5 V max
• Referenced to input common
• If not used, connect to input common
Inhibit TTL Open Collector
• Logic low (output disabled)
Voltage ≤0.8 V
Input Voltage
• 16 to 40 VDC
Output Power
• 25 to 30 watts depending on model
Lead Soldering Temperature (10 sec per pin)
• 300°C
Storage Temperature Range (Case)
• –65°C to +135°C
Output Voltage Temperature Coefficient
• 100 ppm/°C typical single and dual outputs
• 200 ppm/°C main, 300 ppm/°C aux
triple output
Input to Output Capacitance
• 50 pF typ. (100 pF typ triple outputs)
Current Limit
• 115% of full load typical
Isolation
Inhibit pin current 8.0 mA max
• Referenced to input common
• Logic high (output enabled)
Open collector
• 100 megohm minimum at 500 V
Audio Rejection
• 40 dB typ (50 dB typ triple output)l
Conversion Frequency
• Free run 550 min, 600 typ, 650 max kHz
• External sync 500 to 675 kHz
Inhibit Pin Voltage (unit enabled)
• 9 to 11 V
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
• 16 to 40 VDC continuous
• 50 V for 50 msec transient
Case Operating Temperature (Tc)
• –55°C to +100°C full power
• –55°C to +115°C absolute
Derating Output Power/Current
• Linearly from 100% at 100°C to 0% at 115°C
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
SINGLE OUTPUT MODULES
3R3S
05S
12S
15S
18S
PARAMETER
OUTPUT VOLTAGE
OUTPUT CURRENT
CONDITION
MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
3.27 3.30 3.33 4.95 5.00 5.05 11.88 12.00 12.12 14.85 15.00 15.15 17.82 18.00 18.18 VDC
1
V
V
= 16 to 40 VDC
= 16 to 40 VDC
0
0
––
—
6.06
20
0
0
—
—
5.0
25
0
0
—
—
2.5
30
0
0
—
—
2.0
30
0
0
—
—
1.67
30
A
IN
1
OUTPUT POWER
W
IN
OUTPUT RIPPLE
VOLTAGE
10 kHz – 2 MHz
—
—
—
—
—
—
16
—
15
—
5
40
50
10
10
10
10
40
50
—
—
—
—
—
—
16
—
35
50
10
15
5
50
90
30
50
30
50
40
50
—
—
—
—
—
—
16
—
25
40
10
15
5
50
90
30
50
30
50
40
50
—
—
—
—
—
—
16
—
25
40
10
15
5
50
90
30
50
30
50
40
50
—
—
—
—
—
—
16
—
—
—
—
—
—
—
28
—
40
90
30
50
30
50
40
50
mV p-p
mV
Tc = –55°C TO +125°C
Vin = 16 to 40 VDC
Tc = –55°C TO +125°C
NO LOAD TO FULL
Tc = –55°C TO +125°C
CONTINUOUS
2
LINE REGULATION
—
2
LOAD REGULATION
mV
—
28
—
15
28
—
15
28
—
15
28
—
1
INPUT VOLTAGE
VDC
V
NO LOAD TO FULL
TRANSIENT 50 ms
1
INPUT CURRENT
NO LOAD
FULL LOAD
—
—
—
30
0.94
7
75
—
8
—
—
—
35
1.15
3
75
—
8
—
—
—
35
1.30
3
75
—
8
—
—
—
35
1.25
3
75
—
8
—
—
—
—
1.33
—
50
—
8
mA
A
INHIBITED
mA
INPUT RIPPLE
CURRENT
10 kHz – 10 MHz
Tc = –55°C TO +125°C
—
25
76
50
—
20
78
50
—
20
83
50
—
20
84
50
—
—
—
50 mA p-p
EFFICIENCY
74
—
76
—
80
—
81
—
81
—
%
3
LOAD FAULT
SHORT CIRCUIT
POWER DISSIPATION
—
—
—
10
6
—
—
—
10
5
—
—
—
10
5
—
—
—
10
5
—
—
—
10
W
1, 4
RECOVERY
1.4
1.4
1.4
1.4
1.4
—
ms
STEP LOAD RESP.
STEP LINE RESP.
50% – 100% – 50%
TRANSIENT
—
—
125
250
200
—
—
200 300
60 200
—
—
250 400
60 200
—
—
350 500
60 200
—
—
—
600 mV pk
4
RECOVERY
—
60
—
µs
16 – 40 – 16 VDC
5
TRANSIENT
—
—
—
—
300
300
—
—
200 300
—
—
400 500
—
—
500 600
—
—
500
300
—
—
mV pk
µs
4
RECOVERY
—
300
5
—
300
5
—
300
5
1
START-UP
DELAY
—
1.4
5
—
1.4
—
1.4
—
1.4
—
—
5
ms
OVERSHOOT
FULL LOAD
NO LOAD
—
—
0
50
—
—
0
50
—
—
0
120
—
—
0
150
—
—
0
—
—
mV pk
33
150
50
250
120 600
150 750
—
Notes
1. Tc = –55°C to +100°C
2. Operation is limited below 16V.
4. Recovery time is measured from application of the transient to point at which
Vout is within 1% of final value.
3. Indefinite short circuit protection not guaranteed above 100°C case.
5. Transition time ≥10 µs.
4
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