DC/DC C
ONVERTERS
DUAL OUTPUT MODELS
PARAMETER
CONDITIONS
OUTPUT VOLTAGE
1
OUTPUT CURRENT
1,2
OUTPUT POWER
1,2
OUTPUT RIPPLE
VOLTAGE +/– V
OUT
LINE REGULATION
3
V
IN
= 16 TO 40 VDC
LOAD REGULATION
NO LOAD TO FULL
CROSS REGULATION
EFFECT ON –V
OUT
INPUT VOLTAGE
1
NO LOAD TO FULL
INPUT CURRENT
+V
OUT
–V
OUT
V
IN
= 16 TO 40 VDC
V
IN
= 16 TO 40 VDC
10 kHz - 2 MHz
Tc = –55°C TO +125°C
Tc = –55°C
TO +125°C
Tc = –55°C
TO +125°C
SEE NOTE 4
SEE NOTE5
CONTINUOUS
TRANSIENT 50 ms
NO LOAD
1
FULL LOAD
INHIBITED
1
10 kHz - 10 MHz
POWER DISSIPATION
SHORT CIRCUIT
RECOVERY
1, 7
TRANSIENT
50 – 100 – 50%
10 – 100 –10%
RECOVERY
7
50 – 100 – 50%
10 – 100 – 10%
16 – 40 – 16 V
IN
TRANSIENT
8
RECOVERY
7
DELAY
OVERSHOOT
NO LOAD
+V
OUT
–V
OUT
+V
OUT
–V
OUT
MHD2805D
MIN
TYP
MAX
4.95
5.00
5.05
4.925
0.30
0
—
—
—
—
—
—
—
—
16
0
—
—
—
—
76
—
—
—
—
—
—
—
—
—
—
—
5.00
—
—
20
40
10
50
5
25
7
4
28
—
35
0.70
7
15
78
—
1.4
±200
±400
100
400
±200
—
1.4
0
50
5.075
3.0
15
50
80
50
100
50
100
12
6
40
50
75
—
8
50
—
10
5.0
±300
±600
200
600
±400
300
5
50
250
MHD2812D
MIN
TYP
MAX
11.88 12.00 12.12
11.82
0.13
0
—
—
—
—
—
—
—
—
16
0
—
—
—
—
79
—
—
—
—
—
—
—
—
—
—
—
12.00
—
—
30
40
10
50
15
30
4
4
28
—
50
0.88
7
20
81
—
1.4
±150
±200
100
100
±200
—
1.4
0
120
12.18
1.25
15
80
120
50
150
50
150
8.3
6
40
50
75
—
8
50
—
10
5.0
±300
±400
200
200
±400
300
5
120
600
MHD SERIES
20 WATT
MHD2815D
MIN
TYP
MAX
14.85 15.00 15.15
14.77 15.00
0.10
0
—
—
—
—
—
—
—
—
16
0
—
—
—
—
80
—
—
—
—
—
—
—
—
—
—
—
—
—
25
40
10
50
15
30
3
4
28
—
50
0.86
7
20
83
—
1.4
±200
±300
100
200
±400
—
1.4
0
150
15.23
1.00
15
80
120
50
180
50
180
8
6
40
50
75
—
8
50
—
10
5.0
±400
±500
200
250
±500
300
5
150
750
mV
%
VDC
V
mA
A
mA
mA p-p
%
W
ms
A
W
mV p-p
mV
UNITS
VDC
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.
INPUT RIPPLE
CURRENT
1
EFFICIENCY
LOAD FAULT
6
STEP LOAD
RESPONSE ± V
OUT
mV pk
µs
STEP LINE
RESPONSE ± V
OUT
START–UP
mV pk
µs
ms
mV pk
Notes
1. Tc = –55°C to +125°C.
2. Up to 90% of the total output current/power is available from either output
The minimum load on the positive output is 10% of full load.
3. Operation is limited below 16 V (see Figure 15).
4. Effect on the negative output under the following conditions:
+Pout 20% to 80%; –Pout 80% to 20%
5. Effect on the negative output under the following conditions:
+Pout 50%; –Pout 10% to 50%
6. Indefinite short circuit protection not guaranteed above 125°C case.
7. Recovery time is measured from application of the transient to point at which
Vout is within 1% of final value.
8. Transition time
≥
10 µs.
B2-49
CRANE [ Crane Aerospace & Electronics. ]
