Vicor Micro Family of DC-DC Converter - Manual (Page 60)

Design Guide & Applications Manual
For Maxi, Mini, Micro Family DC-DC Converters and Configurable Power Supplies
Maxi, Mini, Micro Design Guide Rev 4.9 vicorpower.com
Page 59 of 88
Apps. Eng. 800 927.9474 800 735.6200
12. Output Ripple Attenuator Module (MicroRAM)
l
load
2 A 4 A 6 A 8 A 1 0 A 1 2 A 1 4 A 1 6 A 1 8 A 2 0 A 1 A
200 mV
300 mV
400 mV
450 mV
V OUT =3 V
2 0 k
Rhr=16k
1 7 k
1 8 k
1 9 k
2 1 k
V
h
e
a
d
ro
o
m
Figure 12–5 — Headroom vs. load current at 3 V output
2 A 4 A 6 A 8 A 1 0 A 1 2 A 1 4 A 1 6 A 1 8 A 2 0 A 1 A
200 mV
300 mV
400 mV
450 mV
1 0 0 k
9 0 k
8 5 k
9 5 k
1 0 5 k
Rhr = 80 k
l
load
V
h
e
a
d
ro
o
m
V OUT = 15 V
Figure 12–6 — Headroom vs. load current at 15 V output
2 A 4 A 6 A 8 A 1 0 A 1 2 A 1 4 A 1 6 A 1 8 A 2 0 A 1 A
200 mV
300 mV
400 mV
450 mV
V OUT =28 V
1 9 0 k
Rhr=150k
1 6 0 k
1 7 0 k
1 8 0 k
2 0 0 k
l
load
V
h
e
a
d
ro
o
m
Figure 12–7 — Headroom vs. load current at 28 V output