PRM48DH480T250B03 Datasheet, PDF (11/22 Pages) Vicor Corporation – Building block for high efficiency DC-DC systems

PRM48DH480T250B03
Efficiency & Power Dissipation
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
0
V_OUT = 55 V T_CASE = 100 ºC
0.5
1
1.5
2
2.5
3
16
14
12
10
8
6
4
2
3.5
Load Current [A]
V_IN:
38
48
60
38
48
60
Figure 11 – Total efficiency and power dissipation vs. V_IN
and I_OUT, V_OUT = 55V, T_CASE = 100ºC
Figure 13 – Typical output voltage ripple waveform, 200
mV/div, 500 ns/div T_CASE = 30ºC, V_IN = 48V, V_OUT = 48V, I_OUT
= 3.2 A, no external output capacitance.
Powertrain switching frequency and periodic
input charge vs. input voltage - Full load
1600
1400
f_sw
12
10
1200
8
1000
6
800
4
C
600
2
400
0
38 40 42 44 46 48 50 52 54 56 58 60
Input Voltage [V]
V_OUT:
20
48
55
20
48
55
Figure 15 – Powertrain switching frequency and periodic
input charge vs. V_IN, V_OUT; I_OUT = 3.2 A
V_PR vs. Case Temperature
V_IN = 48 V; V_OUT = 48 V
5.0
4.5
4.0 ^4.32
3.5
4.41
4.08
3.0 _3.15
2.5
3.18
2.86
2.0
-40 -20
0
20
40
60
80 100
Temperature [ºC]
I_OUT:
2.0827
4.1673
Figure 12 – Typical control node voltage vs. T_CASE, and I_OUT;
V_IN = 48V, V_OUT = 48V
Powertrain switching frequency and periodic
output charge vs. input voltage - Full load
1600
1400
12
f_sw
10
1200
8
1000
6
800
C
4
600
2
400
0
38 40 42 44 46 48 50 52 54 56 58 60
Input Voltage [V]
V_OUT:
20
48
55
20
48
55
Figure 14 – Powertrain switching frequency and periodic
output charge vs. V_IN, V_OUT; I_OUT = 3.2 A
DC Safe Operating Area
6.00
210
5.50
180
5.00
150
4.50
120
4.00
90
3.50
60
3.00
30
2.50
0
5 10 15 20 25 30 35 40 45 50 55 60
Output Voltage [V]
IOUT Continuous
IOUT 5 s
POUT Continuous
POUT 5 s
Figure 16 – DC Output Safe Operating Area
PRM^® Regulator
Page 11 of 23
Rev 1.2
7/2015
vicorpower.com
800 735.6200