DC/DC C
ONVERTERS
85
80
85
80
16V
28V
87
82
16V
28V
40V
72
67
62
MHD SERIES
20 WATT
Typical Performance Curves: 25°C Tc , 28 VDC Vin, 100% load, free run, unless otherwise specified.
Efficiency (%)
Efficiency (%)
75
28V
70
65
60
40V
75
70
Efficiency (%)
15
20
16V
77
40V
65
60
5
10
15
5
10
5
10
15
20
Output Power (Watts)
Output Power (Watts)
Output Power (Watts)
MHD2805S Efficiency
MHD2812S Efficiency
MHD2815S Efficiency
F
IGURE
2
F
IGURE
3
F
IGURE
4
85
80
16V
90
0
85
16V
80
28V
75
40V
70
65
75
70
65
60
28V
40V
Attenuation (dB)
10
15
Efficiency (%)
Efficiency (%)
20
40
60
80
5
10
15
5
100
0.1
1
10
100
Output Power (Watts)
Output Power (Watts)
Frequency (kHz)
MHD2812D Efficiency
MHD2815D Efficiency
MHD Series Audio Rejection
F
IGURE
5
F
IGURE
6
F
IGURE
7
20 V/div
20 mV/div
15 W to 7.5 W
15 W to 1.5 W
Vin
100 mV/div
200mV/div
7.5 W to 15 W
1.5 W to 15 W
Vout
50µs/div
50% to 100% to 50%
50µs/div
10% to 100% to 10%
50µs/div
(16 TO 40V)
MHD2805S Step Load Response
MHD2805S Step Load Response
MHD2805S Step Line Response
F
IGURE
8
F
IGURE
9
F
IGURE
10
B2-51
CRANE [ Crane Aerospace & Electronics. ]
