Instruction Manual

Design Guide & Applications Manual
F
or 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
2A 4A 6A 8A 10A 12A 14A 16A 18A 20A1A
200 mV
3
00 mV
400 mV
450 mV
V
O
UT
=
3 V
20k
Rhr=16k
17k
18k
19k
21k
V
headroom
Figure 12–5 — Headroom vs. load current at 3 V output
2 A 4 A 6 A 8 A 10 A 12 A 14 A 16 A 18 A 20 A1 A
200 mV
300 mV
400 mV
450 mV
1
00 k
90 k
8
5 k
95 k
105 k
R
hr = 80 k
l
load
V
headroom
V
OUT
= 15 V
Figure 12–6 — Headroom vs. load current at 15 V output
2 A 4 A 6 A 8 A 10 A 12 A 14 A 16 A 18 A 20 A1 A
200 mV
300 mV
400 mV
450 mV
V
OUT
=2 8 V
190k
Rhr=150k
160k
170k
180k
200k
l
load
V
headroom
Figure 12–7 — Headroom vs. load current at 28 V output