9 Application and Implementation

Note

Information in the following applications sections is not part of the TI component specification,

and TI does not warrant its accuracy or completeness. TI’s customers are responsible for

determining suitability of components for their purposes, as well as validating and testing their design

implementation to confirm system functionality.

9.1 Application Information

The following section discusses the design of the external components to complete the power supply design for

several input and output voltage options by using typical applications as a reference.

9.2 Typical Application

R1

523 k

R2

200 k

SW

GND

FB

EN

PG

VIN

C2

2 x 10 µF

R3

100 k

C1

4.7 µF

VIN

2.25 V to 5.5 V

VPG

VOUT

1.8 V

L1

0.47 µH

TPS62830x

VOS

MODE

Figure 9-1. Typical Application of TPS62830x (Optimized for Design Size)

R1

523 k

R2

200 k

SW

GND

FB

EN

PG

VIN

C2

2 x 22 µF

R3

100 k

C1

4.7 µF

VIN

2.25 V to 5.5 V

VPG

VOUT

1.8 V

L1

0.24 µH

TPS62830x

VOS

MODE

Figure 9-2. Typical Application of TPS62830x (Optimized for Transient Response)

9.2.1 Design Requirements

For this design example, use the parameters listed in Table 9-1 as the input parameters.

Table 9-1. Design Parameters

DESIGN PARAMETER

EXAMPLE VALUE

Input voltage

2.25 V to 5.5 V

Output voltage

1.8 V

Output ripple voltage

< 15 mV

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TPS628301, TPS628302, TPS628303, TPS628304

SLVSG98A – FEBRUARY 2023 – REVISED OCTOBER 2023

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