Input Voltage (V)
Ou
tp
u
t
Volta
g
e
(V)
10
20
30
40
50
60
4.5
4.6
4.7
4.8
4.9
5
5.1
5.2
5.3
5.4
5.5
D001
Load Current (mA)
Ou
tp
u
t
Volta
g
e
(V)
500
600
700
800
900
1000
1100
1200
4.5
4.6
4.7
4.8
4.9
5
5.1
5.2
5.3
5.4
5.5
D002
Test Results
54
JAJU324B – March 2015 – Revised July 2017
翻訳版
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5.2
Power Supply Tests
5.2.1
24-V to 5-V DC/DC Power Supply
The LM46002 was configured in this design to work with an input voltage range between 17 and 60 V.
The nominal load current was defined for the following configuration. The Sitara AM3359 running at
600 MHz executing the application code from DDR3, with both DP83867IR connected in Gigabit Ethernet
mode with continuous UDP packet transfer at 20% network utilization on both ports. The minimum load
current is set to 500 mA, the nominal load to 850 mA, and the maximum load to 1.2 A.
Three tests where done: Output voltage versus input voltage (
), output voltage versus load current
(
), and the output voltage ripple (
).
図
図
45. Output Voltage (V
OUT
) at 850 mA Nominal Load
Current With Varying Input Voltage (V
IN
)
図
図
46. Load Regulation: V
OUT
at 24-V Input Voltage at
Varying Loads
図
図
47. V
OUT
Output Voltage Ripple at 850 mA Load Current and 24-V V
IN
Input Voltage
