PRM48DH480B03 Datasheet, PDF (12/22 Pages) Vicor Corporation – DC to DC Regulator

PRM48DH480T250B03
DC modulator gain and powertrain equivalent
output resistance vs. output current, V_OUT = 55V
8
350
6
300
4
g_pr
250
2
200
0
150
-2
100
-4
r_{eq_out}
50
-6
0
0
0.5
1
1.5
2
2.5
3
3.5
Output Current [A]
V_IN:
38
45
60
38
45
60
Figure 17 – Powertrain characteristics vs. I_OUT;
Resistive load, V_OUT = 55V, various V_IN
DC modulator gain and powertrain equivalent
output resistance vs. output current, V_OUT = 48V
8
350
6
300
4
250
g_pr
2
200
0
150
-2
100
r_{eq_out}
-4
50
-6
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
Output Current [A]
V_IN:
38
45
60
38
45
60
Figure 19 – Powertrain characteristics vs. I_OUT;
Resistive load, V_OUT = 48V, various V_IN
Output Power vs. V_PR
V_IN = 48V, V_OUT = 48V, T_C=25ºC
200
180
Typical min
160
Nominal
140
Typical max
120
100
80
60
40
20
0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
PR Voltage [V]
Figure 21 – Output Power vs. V_PR; V_IN = 48V, V_OUT = 48V,
T_CASE = 25ºC
DC modulator gain and powertrain equivalent
output resistance vs. output current, V_OUT = 20V
10
89
8
76
6
g_pr
63
4
50
2
37
0
r_{eq_out}
24
-2
11
-4
-2
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
Output Current [A]
V_IN:
38
45
60
38
45
60
Figure 18 – Powertrain characteristics vs. I_OUT;
Resistive load, V_OUT = 20V, various V_IN
Effective internal capacitance vs. applied
voltage, Input (C_{IN_INT}) and output (C_{OUT_INT})
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0 5 10 15 20 25 30 35 40 45 50 55
Voltage [V]
Figure 20 – Effective internal input and output capacitance
vs. voltage – ceramic type
Powertrain equivalent input resistance
vs. output current, V_OUT = 55V
36
32
28
24
20
16
12
8
4
0
0
0.5
1
1.5
2
2.5
3
3.5
Output Current [A]
V_IN:
38
45
60
Figure 22 – Magnitude of powertrain
impedance vs. V_IN, I_OUT; V_OUT = 55V
dynamic
input
PRM^® Regulator
Page 12 of 23
Rev 1.2
7/2015
vicorpower.com
800 735.6200