1

L1

R2

10 k

R1 3.09 k

VIN = 4.5 V to 17 V

VOUT

2.2 H

C4

R3 10 k

C7 0.1 F

C8

22 F

VOUT

C9

22 F

VIN

Not Installed

EN

VIN

VBST

SW

GND

EN

VFB

1

2

3

4

5

6

1

1

C3

0.1 F

C2

10 F

C1

10 F

VOUT = 1.05 V / 4A

TPS564208

11

TPS564208

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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. Customers should

validate and test their design implementation to confirm system functionality.

8.1 Application Information

The device is a typical step-down DC-DC converter for converting a higher dc voltage to a lower dc voltage with

a maximum available output current of 4 A. The following design procedure can be used to select component

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 14 shows the TPS564208 4.5-V to 17-V input, 1.05-V output converter

design meeting the requirements for 4-A output. This circuit is available as the evaluation module (EVM). The

sections provide the design procedure.

Figure 14. TPS564208 1.05-V, 4-A Reference Design