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 device is a typical buck DC/DC module that is typically used to convert a higher DC voltage to a lower DC

voltage with a maximum available output current of 1A. Use the following design procedure to select component

values for TPSM861253.

8.2 Typical Application

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

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

Figure 8-1 shows the 12V input, 3.3V output converter schematic.

Figure 8-1. Schematic

8.2.1 Design Requirements

Table 8-1 shows the design parameters for this application.

Table 8-1. Design Parameters

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

VOUT

Output voltage

3.3

V

IOUT

Output current

1

A

ΔVOUT

Transient response

0.1A – 0.9A load step, 2A/μs slew

rate

±3% × VOUT

V

VIN

Input voltage

3.8

12

17

V

VOUT(ripple)

Output voltage ripple

CCM condition

20

mV

TA

Ambient temperature

25

°C

TPSM861253

SLUSFD2A – SEPTEMBER 2023 – REVISED JANUARY 2024

www.ti.com

12

Submit Document Feedback

Copyright © 2024 Texas Instruments Incorporated

Product Folder Links: TPSM861253