Datasheet

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DESIGN PARAMETERS

DESIGN PROCEDURE

TPS54010

SLVS509B – MAY 2004 – REVISED JUNE 2005

Figure 12. Application Circuit, 2.5 V to 1.5 V

Figure 12 shows the schematic for a typical

TPS54010 application. The TPS54010 can provide

up to 14-A output current at a nominal output voltage

To begin the design process, a few parameters must

of 1.5 V. Nominal input voltages are 2.5 V for PVIN

be decided. The designer needs to know:

and 3.3 V for VIN. For proper thermal performance,

• Input voltage range

the exposed PowerPAD underneath the device must

be soldered down to the printed-circuit board.

• Output voltage

• Input ripple voltage

• Output ripple voltage

The following design procedure can be used to select

• Output current rating

component values for the TPS54010. Alternately, the

• Operating frequency

SWIFT Designer Software may be used to generate a

complete design. The SWIFT Designer Software uses

For this design example, use the following as the

an iterative design procedure and accesses a com-

input parameters:

prehensive database of components when generating

a design. This section presents a simplified dis-

cussion of the design process.

DESIGN PARAMETER EXAMPLE VALUE

Input voltage (VIN) 3.3 V

Input voltage range (PVIN) 2.2 to 3.5 V

Output voltage 1.5 V

Input ripple voltage 300 mV

Output ripple voltage 50 mV

Output current rating 14 A