Texas Instruments Evaluation Module for TPS54821 TPS54821EVM-049 TPS54821EVM-049 데이터 시트
제품 코드
TPS54821EVM-049
0
10
20
30
40
50
60
70
80
90
100
0
1
2
3
4
5
6
7
8
Output Current (A)
Ef
ficiency (%)
VIN = 8 V
VIN = 12 V
VIN = 17 V
VIN = 12 V
VIN = 17 V
G001
0
10
20
30
40
50
60
70
80
90
100
0.001
0.01
0.1
1
Output Current (A)
Ef
ficiency (%)
VIN = 8 V
VIN = 12 V
VIN = 17 V
VIN = 12 V
VIN = 17 V
G002
Test Setup and Results
2.2
Efficiency
The efficiency of this EVM peaks at a load current of about 2 A and then decreases as the load current
increases toward full load.
increases toward full load.
shows the efficiency for the TPS54821EVM-049 at an ambient
temperature of 25
°
C.
Figure 1. TPS54821EVM-049 Efficiency
shows the efficiency for the TPS54821EVM-049 using a semi-log scale to more easily show
efficiency at lower output currents. The ambient temperature is 25
°
C.
Figure 2. TPS54821EVM-049 Low Current Efficiency
The efficiency may be lower at higher ambient temperatures, due to temperature variation in the
drain-to-source resistance of the internal MOSFET.
drain-to-source resistance of the internal MOSFET.
5
SLVU479
–
October 2011
TPS54821EVM-049, 8-A, SWIFT
™
Regulator
—
Evaluation Module
Copyright
©
2011, Texas Instruments Incorporated