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Texas Instruments TPS65820 Evaluation Module TPS65820EVM TPS65820EVM Scheda Tecnica

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TPS65820EVM
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Pagina di 99
TYPICAL CHARACTERISTICS – SM1 AND SM2 BUCK CONVERTERS
0
10
20
30
40
50
60
70
80
90
100
0
0.1
0.2
0.3
0.4
0.5
0.6
I - Output Current - A
O
Efficiency-%
VIN_SM1 = 4 V,
V (SM1) = 1.24 V,
L = 3.3 H,
C (SM1) = 10 F
O
O
m
m
76
78
80
82
84
86
88
90
92
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
I - Output Current - A
O
Efficiency-%
VIN_SM2 = 4.6 V,
VO (SM2) = 1.8 V,
L = 3.3 H.
C (SM2) = 10 F
O
m
m
AC = 5 V,
VIN_SM2 = 4.6 V,
V (SM2 = 1.8 V
O
I (SM2)
L = 3.3 mF,
C (SM2) = 10 F
O
O
m
AC = 5 V,
VIN_SM2 = 4.6 V,
V (SM2 = 1.8 V
O
I (SM2)
L = 3.3 mF,
C (SM2) = 10 F
O
O
m
SLVS663B – MAY 2006 – REVISED APRIL 2008
..............................................................................................................................................................
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Measured with Application Circuit shown in
, unless otherwise noted
PWM MODE
EFFICIENCY IN AUTOMATIC
EFFICIENCY
PWM/PFM MODE
vsOUTPUT CURRENT
Figure 14.
Figure 15.
PFM OPERATION
PFM LOW RIPPLE OPERATION
Figure 16.
Figure 17.
24
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