Texas Instruments Evaluation Module for TPS54120 1A Power Supply w/ Integrated DC-DC Converter & Low-Dropout Regulator T TPS54120EVM-103 数据表
产品代码
TPS54120EVM-103
100
90
80
70
60
50
40
30
20
0
100
200
300
400
500
600
700
800
900
1000
Efficiency - %
I
- Output Current - mA
O
TPS54120EVM Efficiency
V
= 10 V
in
V
= 8 V
in
V
=12 V
in
V
=15 V
in
Test Results
4.5
Efficiency
shows the efficiency for the TPS54120 at an ambient temperature of 25
°
C for Vin= 8V, 10V, 12V,
and 15V. The switcher output voltage is set to 4.1V and the LDO is set to 3.3V.
Figure 7. TPS54120 Efficiency
4.6
Thermal Characteristic
This section shows a thermal image of the TPS54120 running at 12 V input and 1A load, 3.3V LDO OUT,
and 4.1V Switcher out. There is no air flow and the ambient temperature is 25
and 4.1V Switcher out. There is no air flow and the ambient temperature is 25
°
C. The peak temperature of
the IC (56.4
°
C) is well below the maximum recommended operating condition listed in the data sheet of
150
°
C.
8
TPS54120EVM, Low Noise 1A Power Supply Evaluation Module
SLVU641
–
January 2012
Copyright
©
2012, Texas Instruments Incorporated