8 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.

8.1 Application Information

The devices are typical buck DC/DC converters. The devices are typically used to convert a higher dc voltage

to a lower dc voltage with a maximum available output current of 3 A. The following design procedure can be

used to select component values for TPS56320x. Alternately, the WEBENCH® software can be used to generate

a complete design. The WEBENCH software uses an iterative design procedure and accesses a comprehensive

database of components when generating a design. This section presents a simplified discussion of the design

process.

8.2 Typical Application

The application schematic in Figure 8-1 was developed to meet the previous requirements. This circuit is

available as the evaluation module (EVM). The section provide the design procedure.

Figure 8-1 shows the TPS563203 4.2-V to 17-V input, 1.05-V output converter schematics.

L1

R2

10 k

R1 7.5 k

VIN = 4.2 V to 17 V

VOUT

2.2

H

C4

R3 100 k

C7 0.1

F

C8

22

F

VOUT

C9

22

F

VIN

Not Installed

VIN

GND

FB

SW

VIN

EN

BST

1

2

3

4

5

6

1

C3

0.1

F

C2

10

F

C1

10

F

VOUT = 1.05 V/2A

1

Figure 8-1. TPS563203 1.05-V/3-A Reference Design

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TPS563203, TPS563206

SLUSEZ4 – MARCH 2023

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Product Folder Links: TPS563203 TPS563206