參數(shù)資料
型號: TPS54380EVM-001
廠商: Texas Instruments, Inc.
英文描述: 3-Amp SWIFT Regulator Evaulation Module(3A SWIFT穩(wěn)壓器TPS54380的評估模塊)
中文描述: 3安培的SWIFT穩(wěn)壓Evaulation模塊條第(3A SWIFT的穩(wěn)壓器TPS54380的評估模塊)
文件頁數(shù): 17/36頁
文件大小: 455K
代理商: TPS54380EVM-001
Efficiency
2-3
Test Setup and Results
2.2
Efficiency
The TPS54380EVM–001 efficiency peaks at load current of about 1 A to 2 A,
and then decreases as the load current increases towards full load. Figure 2–2
shows the efficiency for the TPS54380 at an ambient temperature of 25
°
C. The
efficiency is lower at higher ambient temperatures, due to temperature
variation in the drain-to-source resistance of the MOSFETs. The efficiency is
slightly lower at 700 kHz than at lower switching frequencies, due to the gate
and switching losses in the MOSFETs.
Figure 2–2.Measured Efficiency, TPS54380
50
55
60
65
70
75
80
85
90
95
100
0
0.5
1
IO – Output Current – A
1.5
2
2.5
3
3.5
E
EFFICIENCY
vs
OUTPUT CURRENT
VI = 5 V
VI = 3.3 V
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