PRELIMINARY
µRAM2xxx
(
µRAM3xxx data not included in this rev.)
450mV
450mV
VOUT=3V
400mV
400mV
VOUT=15V
Figure 5—Headroom
vs. load current at 3V output.
Figure 7—Headroom
vs. load current at 28V output.
Figure 9—V375A28C600A
and µRAM; Input and output
dynamic response no added C
TRAN
; 20% of 20A rating load
step of 4A (10A
➟
14A);R
HR
=178k (Configured as in Figs. 1 & 2)
Vicor Corp.
Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
Vheadroom
Vheadroom
Vheadroom
Rhr=16k
300mV
17k
18k
19k
20k
200mV
21k
Rhr=80k
300mV
85k
90k
95k
100k
200mV
105k
1A
2A
4A
6A
8A
10A
I_Iload
12A
14A
16A
18A
20A
1A
2A
4A
6A
8A
10A
I_Iload
12A
14A
16A
18A
20A
V(VSOURCE) –V(VOut)
V(VSOURCE) –V(VOut)
Figure 6—Headroom
vs. load current at 15V output.
450mV
VOUT=28V
400mV
Rhr=150k
300mV
160k
170k
180k
190k
200mV
200k
1A
2A
4A
6A
8A
10A
I_Iload
12A
14A
16A
18A
20A
V(VSOURCE) –V(VOut)
Figure 8—V375A28C600A
and µRAM; Input and output ripple
@50% (10A) load CH1=Vi; CH2=Vo; Vi-Vo=332mV; RHR=178k
Figure 10—V375A28C600A
and µRAM; Input and output
dynamic response C
TRAN
=820µF Electrolytic; 32.5% of load step
of 6.5A (10A
➟
16.5A);R
HR
=178k (Configured as in Figs. 1 & 2)
MicroRAM Data Sheet
Rev. 1.1
Page 6 of 8
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