參數(shù)資料
型號: TPS54980EVM-022
廠商: Texas Instruments, Inc.
英文描述: 9-Amp SWIFT Regulator Evaulation Module(9A SWIFT穩(wěn)壓器TPS54980的評估模塊)
中文描述: 9放大器模塊的SWIFT穩(wěn)壓Evaulation(第9A SWIFT的穩(wěn)壓器TPS54980的評估模塊)
文件頁數(shù): 17/34頁
文件大?。?/td> 827K
代理商: TPS54980EVM-022
Efficiency
2-3
Test Setup and Results
2.2
Efficiency
The TPS54980EVM022 efficiency peaks at a load current of about 1 A to 2 A
and then decreases as the load current increases towards full load. Figure 22
shows the efficiency of the TPS54980 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. Efficiency is
slightly lower at 700 kHz than at lower switching frequencies due to the gate
and switching losses in the MOSFETs.
Figure 22.Measured Efficiency, TPS54980
50
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80
85
90
95
100
0
1
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10
IO Output Current A
E
EFFICIENCY
vs
OUTPUT CURRENT
VI = 3.3 V
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