50

55

60

65

70

75

80

85

90

95

100

0

0.5

1

1.5

2

2.5

3

3.5

I

-OutputCurrent- A

O

2.5V

3V

3.6V

4.2V

5V

TPS6300,

PS=Low,

V

=3.3V

O

VOUT100mV/div

LOADPULSE

www.ti.com

Board Layout

Figure 4. Efficiency Over Li-Ion Cell Range

2.6

Power Dissipation

With high efficiency, the power to be dissipated is low. Also, the QFN package with a solder pad is very

efficient at removing heat. Care must be taken, however, to not overheat the device.

2.7

Load Transients

Load transient response is well regulated. Additional output capacitance reduces voltage overshoot and

undershoot.

Figure 5. Load Step 100 mA to 500 mA

3

Board Layout

This section provides the TPS63020EVM-487 board layout and illustrations.

3.1

Layout

Figure 6 through Figure 8 show the board layout for the TPS63020EVM-487 PCB.

5

SLVU365 – March 2010

TPS63020EVM-487

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