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 TPS61322xx is designed to operates at a wide input voltage range from 0.9-V to 5.5-V. The minimum

peak switch current limit is 0.5 A for TPS61322, with 0.75 A for TPS613221A and 1.1 A for TPS613222A.

The TPS61322xx supports output voltage from 1.8 V to 5.5 V with increment of 0.1 V, refer to Section 4 for

device details to select the right device for the target applications. Use the following design procedure to select

component values for the TPS61322xx.

8.2 Typical Application

8.2.1 Boost without Schottky Diode

A typical application example is the wireless mouse, which normally requires 2.2-V voltage as its supply voltage

and consumes less than 50-mA current from one-cell alkaline battery. The following design procedure can be

used to select external component values for TPS61322xx.

TPS61322xx

Battery

SW

VOUT

22uF

4.7uH

VOUT

GND

L1

C1

Copyright © 2017, Texas Instruments Incorporated

Figure 8-1. Typical Application Circuit without Schottky Diode

8.2.1.1 Design Requirements

Table 8-1. Design Requirements

PARAMETERS

VALUES

Input voltage

0.9 V to 1.6 V

Output voltage

2.2 V

Output current

50 mA

Output voltage ripple

±10 mV

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TPS61322

SLVSDY5E – JANUARY 2018 – REVISED FEBRUARY 2024

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Product Folder Links: TPS61322