
4
MFC SERIES
UP TO 30 WATTS
FILTERED CONFIGURABLE DC/DC CONVERTERS
30 Watt Single Output Modules
SINGLE OUTPUT MODULES
3R3S
05S
12S
15S
18S
PARAMETER
CONDITION
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
OUTPUT VOLTAGE
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
OUTPUT CURRENT1
VIN = 16 to 40 VDC
0
––
6.06
0
—
5.0
0
—
2.5
0
—
2.0
0
—
1.67
A
OUTPUT POWER1
VIN = 16 to 40 VDC
0
–
20
0
—
25
0
—
30
0
—
30
0
—
30
W
OUTPUT RIPPLE
10 kHz – 2 MHz
—
15
20
—
35
50
—
25
50
—
25
50
——
40
mV p-p
VOLTAGE
Tc = –55°C TO +100°C
——
90
—
50
90
—
40
90
—
40
90
——
90
LINE REGULATION2
Vin = 16 to 40 VDC
—
530
—
10
30
—
10
30
—
10
30
——
30
mV
Tc = –55°C TO +100°C
——
50
—
15
50
—
15
50
—
15
50
——
50
LOAD REGULATION
NO LOAD TO FULL
—
220
—
530
—
530
—
530
——
30
mV
Tc = –55°C TO +100°C
——
30
—
15
50
—
15
50
—
15
50
——
50
INPUT VOLTAGE1
CONTINUOUS
16
28
40
16
28
40
16
28
40
16
28
40
16
28
40
VDC
NO LOAD TO FULL
TRANSIENT 50 ms
——
50
——
50
——
50
——
50
——
50
V
INPUT CURRENT1
NO LOAD
—
30
75
—
35
75
—
35
75
—
35
75
——
50
mA
FULL LOAD
—
0.94
——
1.15
——
1.30
——
1.25
——
1.33
—
A
INHIBITED
—
78
—
38
—
38
—
38
——
8mA
INPUT RIPPLE
10 kHz – 10 MHz
CURRENT
Tc = –55°C TO +100°C
—
25
50
—
20
50
—
20
50
—
20
50
——
50
mA p-p
EFFICIENCY
72
76
—
76
78
—
80
83
—
81
84
——
—
%
LOAD FAULT3
SHORT CIRCUIT
POWER DISSIPATION
——
11
——
10
——
10
——
10
——
10
W
RECOVERY1, 4
—
1.4
5
—
1.4
5
—
1.4
5
—
1.4
5
—
1.4
—
ms
STEP LOAD RESP.
50% – 100% – 50%
—
±125
±300
—
±200 ±300
—
±250 ±400
—
±350 ±500
——
±600
TRANSIENT
10% – 100%
————
–400 –600
—–600 –1000
—–800 –1200
——
—
mV pk
100% – 10%
————
+350 +600
—
+500 +750
—
+600 +1000
——
—
50% – 100% – 50%
——
200
—
60
200
—
60
200
—
60
200
—
60
—
RECOVERY4
10% – 100%
————
60
600
—
150
300
—
250
500
——
—
s
100% – 10%
————
200
600
—
250
500
—
250
500
——
—
STEP LINE RESP.
16 – 40 – 16 VDC
TRANSIENT5
——
±300
—
±200 ±300
—
±400 ±500
—
±500 ±600
—
±500
—
mV pk
RECOVERY4
——
300
——
300
——
300
——
300
—
300
—
s
START-UP1
DELAY
—
1.4
5
—
1.4
5
—
1.4
5
—
1.4
5
——
5ms
OVERSHOOT
FULL LOAD
—
050
—
050
—
0
120
—
0
150
—
0
—
mV pk
NO LOAD
—
33
150
—
50
250
—
120
600
—
150
750
——
—
TYPICAL CHARACTERISTICS
SYNC AND INHIBIT
RECOMMENDED OPERATING CONDITIONS
ABSOLUTE MAXIMUM RATINGS
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
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
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.
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
Inhibit pin current 8.0 mA max
Referenced to input common
Logic high (output enabled)
Open collector
Notes
1. Tc = –55°C to +100°C
2. Operation is limited below 16V.
3. Indefinite short circuit protection not guaranteed above 100°C case.
4. Recovery time is measured from application of the transient to point at which
Vout is within 1% of final value.
5. Transition time
≥10 s.