0.080

0.098

0.110

0.220

0.040

0.013DIA 4PL

Alldimensionsininches

Application Circuits

+

PwPd

10.8-19.8V

L1

15 H

m

6

4

9

5

2

3

GND

VSNS

VIN

NC

NC

ENA

BOOT

PH

7

1

8

C1

10 F

m

C3

220 F

m

D1

B340A

C2

0.01 F

m

VOUT

5V

R2

3.24kW

R1

10kW

VIN

EN

U1

TPS5430DDA

Design Procedure

TPS5430-Q1

Figure 10. TPS5430 Land Pattern

Figure 11 shows the schematic for a typical TPS5430 application. The TPS5430 can provide up to 3-A output

current at a nominal output voltage of 5 V. For proper thermal performance, the exposed thermal pad underneath

the device must be soldered down to the printed circuit board.

Figure 11. Application Circuit, 12 V to 5 V

The following design procedure can be used to select component values for the TPS5430. Alternately, the

SWIFT Designer Software may be used to generate a complete design. The SWIFT Designer 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.

Copyright © 2007–2009, Texas Instruments Incorporated

Submit Documentation Feedback

11

Product Folder Link(s): TPS5430-Q1