MHP270 SERIES
DC/DC CONVERTERS
65 WATT
ABSOLUTE MAXIMUM RATINGS
SYNC AND INHIBIT (INH1, INH2)
TYPICAL CHARACTERISTICS
Input Voltage
• 160 to 400 VDC
Output Power
Sync In (525 to 675 kHz)
• Duty cycle 40% min, 60% max
• Logic low 0.8 V max
Output Voltage Temperature Coefficient
• 100 ppm/°C typical
Isolation
• 50 to 65 watts depending on model
Lead Soldering Temperature (10 sec)
• 300°C
Storage Temperature Range (Case)
• –65°C to +150°C
• Logic high 4.5 V min
• 100 megohm minimum at 500 V
Conversion Frequency
• If not used, connect to input common
• Referenced to input common
Sync Out - Referenced to input common
Inhibit (INH1, INH2) TTL Open Collector
• Logic low (output disabled)
• Free run mode 600 kHz typical
525 kHz. min., 675 kHz max
• External sync range: 525 to 675 kHz
Inhibit Pin Voltage (unit enabled)
• INH1 =12 V typ., INH2 = 5 V typ
Low Line Drop Out - Vout drops 50 mv
• Input voltage 155 VDC max
Undervoltage Lockout
INH1 referenced to input common
RECOMMENDED OPERATING CONDITIONS
Logic low 0.8 V max
INH2 referenced to output common
Logic low 0.5 V max
• Logic high (output enabled)
Open collector
Input Voltage Range
• 160 to 400 VDC continuous
• 450 VDC for 50 msec transient
Case Operating Temperature (Tc)
• –55 to +100°C full power
• Input voltage 110 VDC min
Current Limit
• 125% of full load typical
PINS NOT IN USE
Inhibit (INH1, INH2)
No connection
Sync Out
Sync In
Share
No connection
Connect to input common
Connect to output common
Must be connected to
appropriate outputs
Sense Lines
Electrical Characteristics: 25°C Tc, 270 VDC Vin, 100% load, free run, unless otherwise specified.
SINGLE OUTPUT MODELS
MHP27005S
MHP27012S
MHP27015S
MHP27028S
PARAMETER
CONDITION
MIN TYP MAX
MIN TYP MAX
MIN TYP MAX
MIN TYP MAX
UNITS
VDC
A
OUTPUT VOLTAGE
4.95 5.00 5.05
11.88 12.00 12.12
14.85 15.00 15.15
27.22 28.00 28.28
OUTPUT CURRENT
OUTPUT POWER
V
V
= 160 TO 400 VDC
= 160 TO 400 VDC
0
0
—
—
10
50
0
0
—
—
5
0
0
—
—
4.33
65
0
0
—
—
2.32
65
IN
IN
60
W
OUTPUT RIPPLE
VOLTAGE
10 kHz - 2 MHz
—
—
—
—
50
50
—
—
—
—
50
—
—
—
—
75
—
—
—
—
280
280
mV p-p
mV
LINE REGULATION
V
= 160 TO 400 VDC
120
150
IN
LOAD REGULATION
INPUT VOLTAGE
NO LOAD TO FULL
—
—
50
—
—
120
—
160
—
—
150
—
—
280
mV
VDC
V
CONTINUOUS
1
160 270 400
160 270 400
270 400
160 270 400
TRANSIENT 50 ms
—
—
450
—
—
450
—
450
—
—
450
INPUT CURRENT
NO LOAD
—
—
—
—
—
—
20
8
—
—
—
—
—
—
20
10
15
—
—
—
—
—
—
20
7
—
—
—
—
—
—
20
10
15
mA
mA
INHIBITED - INH1
INHIBITED - INH2
15
15
INPUT RIPPLE
CURRENT
10 kHz - 10 MHz
—
—
—
50
—
—
—
—
50
—
—
—
—
45
—
—
—
—
50
—
mA p-p
%
EFFICIENCY
76
81
80
80
2
LOAD FAULT
POWER DISSIPATION
SHORT CIRCUIT
—
—
—
—
19
—
—
—
—
19
—
—
—
—
19
—
—
—
—
23
W
V
1.5
1.5
1.0
1.0
VDC
OUT
STEP LOAD RESP.
50% – 100% – 50%
TRANSIENT
—
—
—
—
300
300
—
—
—
—
700
500
—
—
—
—
700
300
—
—
—
—
1800
1000
mV pk
µs
3
RECOVERY
Notes
1. Unit will shut down above approximately 425V but will be undamaged
and will restart when voltage drops into normal range.
3. Recovery time is measured from application of the transient to point at
which Vout is within 1% of final value.
2. Indefinite short circuit protection not guaranteed above 100°C case.
2
CRANE [ Crane Aerospace & Electronics. ]
