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MCH/MGH Single and Dual DC/DC Converters
Crane Aerospace & Electronics Power Solutions
Page 7 of 18
Rev E - 20060508
www.craneae.com
28 VOLT INPUT – 1.5 WATT
MCH SINGLE OUTPUT MODELS
MCH2805S
MCH2812S
MCH2815S
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP MAX
MIN
TYP
MAX
UNITS
OUTPUT VOLTAGE
2
Tc = 25°C
4.95
5
5.05 11.88
12
12.12 14.85
15
15.15
VDC
Tc = –55°C TO +125°C
4.80
5
5.20 11.52
12
12.48 14.40
15
15.60
OUTPUT CURRENT
V
IN
= 12 to 50 VDC
—
300
—
125
—
100
mA
OUTPUT POWER
V
IN
= 12 TO 50 VDC
0
—
1.5
0
—
1.5
0
—
1.5
W
OUTPUT RIPPLE
10 kHz - 2 MHz
—
45
150
—
50
200
—
35
150
mV p-p
VOLTAGE
Tc = –55°C TO +125°C
—
65
300
—
70
300
—
50
250
LINE REGULATION
V
IN
= 12 TO 50 VDC
—
35
120
—
60
250
—
70
350
mV
Tc = –55°C TO +125°C
—
40
120
—
70
250
—
80
350
LOAD REGULATION
10% TO FULL LOAD
—
350
800
—
600
1400
—
700
1600
Tc = –55°C TO +125°C
—
380
800
—
640
1400
—
760
1600
mV
50% TO FULL
1
—
100
200
—
145
300
—
165
350
Tc = –55°C TO +125°C
—
115
300
—
160
400
—
185
450
INPUT VOLTAGE
CONTINUOUS
12
28
50
12
28
50
12
28
50
VDC
NO LOAD TO FULL
TRANSIENT
1 120 ms
0
—
80
0
—
80
0
—
70
V
INPUT CURRENT
NO LOAD
—
5.5
11
—
6.0
12
—
6.0
12
Tc = –55°C TO +125°C
—
6.0
11
—
6.5
12
—
6.5
12
mA
INHIBITED
—
2.3
3.5
—
2.3
3.5
—
2.3
3.5
Tc = –55°C TO +125°C
—
2.4
3.5
—
2.4
3.5
—
2.4
3.5
INPUT RIPPLE
10k Hz - 10 MHz
—
100
200
—
100
200
—
100
200
mA p-p
CURRENT
3
Tc = –55°C TO +125°C
—
130
250
—
150
250
—
150
250
EFFICIENCY
Tc = 25°C
72
77
—
74
79
—
74
79
—
%
Tc = –55°C TO +125°C
69
75
—
72
77
—
72
77
—
LOAD FAULT
4,5
POWER DISSIPATION
—
1.3
2.0
—
2.0
3.2
—
2.3
3.7
W
Tc = –55°C TO +125°C
—
1.4
2.3
—
2.2
3.5
—
2.5
4.0
RECOVERY
1
—
3.0
15
—
3.5
20
—
4.0
20
ms
Tc = -–55°C TO +125°C
—
3.5
15
—
3.5
20
—
4.0
20
STEP LOAD
50 %–100%– 50% LOAD
RESPONSE
6
TRANSIENT
–500
185
500
–700
350
700
–700
350
700
mV pk
Tc = –55°C TO +125°C
–500
185
500
–800
380
800
–800
380
800
RECOVERY
—
125
500
—
130
500
—
140
600
μs
Tc =–55°C TO +125°C
—
125
600
—
130
600
—
180
750
STEP LINE
12 TO 50 TO 12 V
IN
RESPONSE
6
TRANSIENT
1
–500
170
500 –1000 400
1000 –850
400
850
mV pk
Tc = –55°C TO +125°C
–500
180
500 –1000 400
1000 –850
450
850
RECOVERY
1
—
0.75
4.0
—
0.6
3.0
—
0.47
2.5
ms
Tc = –55°C TO +125°C
—
0.75
4.0
—
0.6
3.0
—
0.5
2.5
START-UP
DELAY
—
7
40
—
7
40
—
7
40
ms
Tc = –55°C TO +125°C
—
10
40
—
10
40
—
10
40
OVERSHOOT
1
—
0
150
—
0
350
—
0
450
mV pk
Tc = –55°C TO +125°C
—
0
150
—
0
350
—
0
450
CAPACITIVE LOAD
1
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.
Notes:
1. Guaranteed by design, not tested.
2. Specified at 50% total P
out
.
3. Lin = 2 μH.
4. Maximum duration of short circuit: 25°C-– 90 seconds, 125°C – 30 seconds.
5. Load fault is a short circuit (<50 mohms). Recovery is into resistive full load.
6. Transition ≥ 10 μs. Recovery = time to settle to within 1% of Vout final value.
7. Max. spec indicates 80% of the converter’s total power, available from either
output.