MHE/MLP SERIES
DC/DC CONVERTERS
20 WATT
INHIBIT
Inhibit TTL Open Collector
• Logic low (output disabled)
Logic low voltage ≤0.8 V
• Referenced to input common
• Logic high (output enabled)
Open collector
TYPICAL CHARACTERISTICS
Output Voltage Temperature Coefficient
• 150 ppm/°C, typical
Input to Output Capacitance
• 60 pF, typical
Current Limit
ABSOLUTE MAXIMUM RATINGS
Output Power
• 10 to 20 watts depending on model
Lead Soldering Temperature (10 sec per lead)
• 300°C
Storage Temperature Range (Case)
• –55°C to +125°C
• 125% of full load, typical
Isolation
• 100 megohm minimum at 500 V
Conversion Frequency
• 125 kHz, typical
Inhibit Pin Voltage (unit enabled)
• 11 to 13 V MHE28XXX, MLP28XXX
• 8 to 10 V MHE12XXX
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
Continuous
• 17 to 40 VDC MHE28XXX
• 10 to 16 VDC MHE12XXX
• 16 to 40 VDC MLP28XXX
Transient
• 50 V for 50 msec on 28 V input models
Case Operating Temperature (Tc)
• –55°C to +85°C full power
Derating Output Power/Current
• Linearly from 100% at 85°C to 0% at 115° C
• MHE28XXX models derate by 33% at 16 Vin
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
SINGLE OUTPUT MHE12XX MODELS
MHE1205S
MHE1212S
TYP
MHE1215S
TYP MAX UNITS
PARAMETER
CONDITION
MIN
4.95
—
TYP
5.00
—
MAX
MIN
MAX
MIN
OUTPUT VOLTAGE
OUTPUT CURRENT
5.05
3
11.88 12.00 12.12 14.85 15.00 15.15 VDC
–55°C TO +85°C
–55°C TO +85°C
—
—
—
—
1.25
15
—
—
—
—
1.0
15
A
OUTPUT POWER
—
—
15
W
OUTPUT RIPPLE
VOLTAGE
0
TO 1 MHz
—
—
35
2
70
5
—
—
35
3
70
10
—
—
35
3
70
10
mV p-p
mV
LINE REGULATION
V
MIN TO MAX
IN
LOAD REGULATION NO LOAD TO FULL
—
10
—
10
12
—
20
16
—
—
10
—
5
15
16
—
—
10
—
10
12
—
20
16
—
mV
VDC
V
INPUT VOLTAGE
CONTINUOUS
12
—
TRANSIENT 50 ms
INPUT CURRENT
NO LOAD
—
—
24
—
—
32
—
—
32
mA
INPUT RIPPLE
CURRENT
10 kHz – 2 MHz
—
30
81
80
—
—
30
82
80
—
—
30
83
80
—
mA p-p
%
EFFICIENCY
78
79
80
B4-14
CRANE [ Crane Aerospace & Electronics. ]
