MOR SERIES
120 WATT
DC/DC CONVERTERS
ABSOLUTE MAXIMUM RATINGS
Input Voltage
SYNC AND INHIBIT (INH1, INH2)
Sync In (525 to 625 kHz)
• Logic low 0.8 V max, duty cycle 15% to 50%
• Logic high 4.5 V min, 9 V max
TYPICAL CHARACTERISTICS
Output Voltage Temperature Coefficient
• 100 ppm/°C typical
Input to Output Capacitance
• 150 pF typical
Undervoltage Lockout
• 15.5 V input typical
Current Limit
• 125% of full load typical
Isolation
• 100 megohm minimum at 500 V
Audio Rejection
• 16 to 40 VDC
Power Dissipation (Pd)
• 30 W
• Referenced to input common
Output Power
Sync Out - Referenced to input common
Inhibit (INH1, INH2) :TTL Open Collector
• Logic low (output disabled), V = 0.2 V max.
• INH1 referenced to input common
• INH2 referenced to output common
• Logic high (output enabled) open collector
• 66 to 120 watts depending on model
Lead Soldering Temperature (10 sec per lead)
• 300°C
Storage Temperature Range (Case)
• –65°C to +150°C
• 40 dB typical
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
• 16 to 40 VDC continuous
• 50 V for 120 msec transient
Case Operating Temperature (Tc)
• –55°C to +125°C full power
PINS NOT IN USE
Conversion Frequency
• Free run mode 550 kHz typical
460 kHz. min, 570 kHz max
• External sync range 525 to 625 kHz
Inhibit Pin Voltage (unit enabled)
• INH1 = 13 V typ, INH2 = 8 V typ
Trim
Case
No connection
Users discrimination
No connection
Inhibit (INH1, INH2)
Sync Out
Sync In
No connection
Connect to input common
No connection
• –55°C to +135°C absolute
Share
Derating Output Power/Current
• Linearly from 100% at 125°C to 0% at 135° C
Sense Lines
Must be connected to
appropriate outputs
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
SINGLE OUTPUT MODELS
MOR283R3S
MOR2805S
MOR286R3S
MOR289R5S
PARAMETER
CONDITION
MIN TYP MAX
MIN TYP MAX
MIN TYP MAX
MIN TYP MAX
UNITS
VDC
A
OUTPUT VOLTAGE
3.25 3.30 3.35
4.95 5.00 5.05
6.24 6.30 6.36
9.40 9.50 9.60
OUTPUT CURRENT
OUTPUT POWER
V
= 16 to 40 VDC
= 16 to 40 VDC
0
0
—
—
20
66
0
0
—
—
20
0
0
—
—
16
0
0
—
—
11
IN
IN
V
100
100
105
W
OUTPUT RIPPLE
VOLTAGE
10 kHz - 20 MHz
Tc = –55°C to +125°C
10 kHz - 2 MHz
—
30
80
—
30
80
—
75
100
—
75
120
mV p-p
mV
Tc = –55°C to +125°C
—
—
20
0
50
20
—
—
20
0
50
20
—
—
50
0
60
20
—
—
50
0
80
20
LINE REGULATION
V
= 16 to 40 VDC
IN
LOAD REGULATION
INPUT VOLTAGE
NO LOAD TO FULL
CONTINUOUS
—
16
—
0
20
40
50
—
16
—
0
20
40
50
—
16
—
0
20
40
50
—
16
—
0
20
40
50
mV
VDC
V
28
—
28
—
28
—
28
—
TRANSIENT 120 ms
INPUT CURRENT
NO LOAD
FULL LOAD
—
—
—
—
70
—
—
—
130
3.2
10
—
—
—
—
70
—
—
—
130
4.67
10
—
—
—
—
70
—
—
—
130
4.45
10
—
—
—
—
70
—
—
—
130
4.63
10
mA
A
INHIBITED - INH1
INHIBITED - INH2
10 kHz - 20 MHz
Tc = –55°C to +125°C
mA
70
70
70
70
INPUT RIPPLE
CURRENT
—
40
78
90
—
—
50
81
130
—
—
50
83
100
—
—
50
84
130
—
mA pp
%
EFFICIENCY
74
78
81
81
1
LOAD FAULT
POWER DISSIPATION
OVERLOAD
—
—
—
—
—
—
27
22
10
—
—
—
—
—
—
30
27
10
—
—
—
—
—
—
30
24
10
—
—
—
—
—
—
30
24
10
W
2
SHORT CIRCUIT
RECOVERY
OUTPUT CURRENT
TRIP POINT
ms
—
—
—
—
25
24
—
—
—
—
25
24
—
—
—
—
20
19
—
—
—
—
14
13
A
2
SHORT CIRCUIT
STEP LOAD RESP.
STEP LINE RESP.
50% – 100% – 50%
TRANSIENT
—
—
—
—
250
200
—
—
—
—
250
200
—
—
—
—
500
300
—
—
—
—
500
300
mV pk
µs
3
RECOVERY
16 – 40 – 16 VDC
4
TRANSIENT
—
—
—
—
400
300
—
—
—
—
400
300
—
—
—
—
500
300
—
—
—
—
500
300
mV pk
µs
3
RECOVERY
START-UP
DELAY
—
—
—
0
10
25
—
—
—
0
10
50
—
—
—
0
10
50
—
—
—
0
10
50
ms
OVERSHOOT
mV pk
INHIBIT PIN CURRENT
UNIT INHIBITED
—
0.1
1.0
—
0.1
1.0
—
0.1
1.0
—
0.1
1.0
mA
Notes: See notes 1, 2, 3, and 4 on the following page.
2
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