1

OUT

REF

2

R

V

V

1

R

æ

ö

=

´

+

ç

÷

è

ø

GND

EN

FB

SW

MODE

V

2.3 V to 6.0 V

IN

C

10 F

IN

m

TPS62290DRV

L

2.2 H

1

m

R

360 k

1

W

R

180 k

2

W

C

22 pF

1

C

10 F

OUT

m

V

1.8 V,

Up to 1A

OUT

TPS62290, TPS62291, TPS62293

www.ti.com

SLVS764F – JUNE 2007 – REVISED JANUARY 2016

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. Customers should

validate and test their design implementation to confirm system functionality.

9.1 Application Information

The TPS6229x devices are high-efficiency synchronous step-down DC/DC converters featuring power save

mode or 2.25-MHz fixed frequency operation.

9.2 Typical Application

Figure 6. TPS62290DRV Adjustable 1.8 V

9.2.1 Design Requirements

The design guideline provides a component selection to operate the device within the recommended operating

condition.

Table 1 shows the list of components for the Application Characterstic Curves.

Table 1. List of Components

COMPONENT REFERENCE

PART NUMBER

MANUFACTURER

VALUE

GRM188R60J106M

Murata

10

μF, 6.3 V. X5R Ceramic

GRM188R60J106M

Murata

10

μF, 6.3 V. X5R Ceramic

Murata

22 pF, COG Ceramic

LPS3015

Coilcraft

2.2

μH, 110 mΩ

Values depending on the programmed output voltage

9.2.2 Detailed Design Procedure

9.2.2.1 Output Voltage Setting

The output voltage can be calculated to:

in the range between 22 pF and 33 pF.

Route the FB line away from noise sources, such as the inductor or the SW line.

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