Datasheet
50
55
60
65
70
75
80
85
90
95
100
0
1 2
3
4
5
Load Current - A
Efficiency - %
Vin = 8 V
Vin = 12 V
Vin = 17 V
TPS54521
SLVS981C –JUNE 2010–REVISED AUGUST 2013
www.ti.com
EFFICIENCY
vs
LOAD CURRENT
Figure 53.
Thermal Performance
Figure 54. Thermal Signature of Example Circuit Operating at
VIN=12V,VOUT=5V/5A, T
A
= Room Temperature
Table 2. Bill of Materials
COUNT RefDes Value Description Size Part Number MFR
1 C2 10µF Capacitor, Ceramic, 25V, X5R, 20% 1206 Std Std
1 C3 4.7µF Capacitor, Ceramic, 25V, X5R, 10% 0805 Std Std
2 C4, C7 0.01µF Capacitor, Ceramic, 50V, X7R, 10% 0603 Std Std
1 C5 0.1µF Capacitor, Ceramic, 16V, X7R, 10% 0603 Std Std
1 C6 220pF Capacitor, Ceramic, 50V, C0G, 5% 0603 Std Std
0.138 x 0.110
1 C9 220µF Capacitor, Polymer, 6.3V, 40 mΩ ESR, ±20% 6TPB220M Sanyo
inch
1 C11 47pF Capacitor, Ceramic, 50V, C0G, 5% 0603 Std Std
0.484 x 0.484 MSS1260-
1 L1 3.3µH Inductor, 12.6mΩ DCR, 7A, ± 30% Coilcraft
inch 332NL
1 R1 511K Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R2 100K Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R3 69.8K Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R4 20K Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R8 52.3K Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R9 10.0K Resistor, Chip, 1/16W, 1% 0603 Std Std
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