DC/DC C
ONVERTERS
DUAL OUTPUT MODELS
PARAMETER
OUTPUT VOLTAGE
CONDITIONS
+V
OUT
–V
OUT
OUTPUT CURRENT
1
OUTPUT POWER
1
OUTPUT RIPPLE
VOLTAGE ±V
OUT
LINE REGULATION
Vin = 16 to 40 VDC
LOAD REGULATION
V
IN
= 16 to 40 VDC
V
IN
= 16 to 40 VDC
10 kHz - 2 MHz
Tc = –55°C to +125°C
BALANCED +V
OUT
LOAD
–V
OUT
–V
OUT
BALANCED +V
OUT
LOAD
CROSS REGULATION
2
INPUT VOLTAGE
NO LOAD TO FULL
INPUT CURRENT
MIN
4.95
4.92
—
—
—
—
—
—
—
—
—
16
—
—
—
—
—
—
75
—
—
–600
–600
—
–800
—
—
0
SMHF2805D
TYP
5.00
5.00
±1.2
—
60
100
5
—
20
—
6
28
—
20
540
6
30
60
77
3
7.5
200
150
150
600
0.8
12
100
MAX
5.05
5.08
1.68
12
160
240
50
100
50
150
7.5
40
50
50
600
12
80
120
—
8
30
600
600
500
800
1.2
30
500
MIN
11.88
11.82
—
—
—
—
—
—
—
—
—
16
—
—
—
—
—
—
74
—
—
–600
–600
—
–750
—
—
0
SMHF2812D
TYP
12.00
12.00
±0.625
—
70
100
5
—
20
—
3
28
—
25
645
5
40
55
81
3
7.5
300
100
200
550
0.8
12
200
MAX
12.12
1218
0.875
15
175
275
50
100
50
150
6
40
50
50
754
12
80
120
—
6
50
600
500
500
750
1.2
25
500
SMHF SERIES
SINGLE AND DUAL
15 WATT
SMHF2815D
MIN
14.85
14.78
—
—
—
—
—
—
—
—
—
16
—
—
—
—
—
—
74
—
—
–600
–600
—
–750
—
—
0
TYP
15.00
15.00
±0.500
—
70
100
5
—
20
—
3
28
—
25
638
5
40
55
82
3
7.5
300
100
200
550
0.8
12
200
MAX
15.15
15.23
0.700
15
175
275
50
100
50
150
6
40
50
50
754
12
80
120
—
6
50
600
600
600
750
1.2
25
500
µs
mV pk
ms
ms
mV pk
%
VDC
V
mA
mV
A
W
mV p-p
mV
UNITS
VDC
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, radiation level O, unless otherwise specified.
NEGATIVE V
OUT
CONTINUOUS
TRANSIENT 50 msec
NO LOAD
FULL LOAD
INHIBITED
10 kHz - 10 MHz
Tc = –55°C to +125°C
SHORT CIRCUIT
3
POWER DISSIPATION
RECOVERY
4
50% – 100% – 50%
+V
OUT
TRANSIENT
–V
OUT
RECOVERY
4
16 – 40 – 40 VDC
TRANSIENT
6
RECOVERY
4
DELAY
OVERSHOOT
7
INPUT RIPPLE
CURRENT
EFFICIENCY
LOAD FAULT
mA p-p
%
W
ms
STEP LOAD RESP.
5
BALANCED LOADS
mV pk
STEP LINE RESP.
± V
OUT
START-UP
Notes
1. Up to 70% of the total output power is available from either output providing
the opposite output is simultaneously carrying 30% of the total output
power. Each output must carry a minimum of 30% of the total output
power in order to maintain regulation on the negative outputs.
2. Effect on –Vout for the following conditions, percentages are of total power:
+Po = 50% to 10% and –Po = 50%
+Po = 50% and –Po = 50% to 10%
3. Indefinite short circuit protection not guaranteed above 125°C (case)
4. Recovery time is measured from application of the transient to point at
which Vout is within regulation.
5. Response of either output with the opposite output held at half of the total
output power.
6. Input step transition time >10µs.
7. Input step transition time <100µs.
35
INTERPOINT [ INTERPOINT CORPORATION COMPANY ]
