PRM48DH480T250A03 Datasheet, PDF (12/23 Pages) Vicor Corporation – Building block for high efficiency DC-DC systems

DC modulator gain and powertrain equivalent
output resistance vs. output current, V_OUT = 55V
8
350
6
300
g_pr
4
250
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
Output Current [A]
V_IN:
38
45
60
38
45
60
Figure 17 – Powertrain characteristics vs. IOUT;
Resistive load, VOUT = 55V, various VIN
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. IOUT;
Resistive load, VOUT = 48V, various VIN
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. VPR; VIN = 48V, VOUT = 48V,
TCASE = 25ºC
PRM48DH480T250A03
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
24
r_{eq_out}
-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. IOUT;
Resistive load, VOUT = 20V, various VIN
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. VIN, IOUT; VOUT = 55V
dynamic
input
PRM^® Regulator  
 
Rev 1.4  
 
vicorpower.com  
Page 12 of 23    
 
12/2012    
 
800 735.6200