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Introduction

1 Introduction

The TPS53219EVM-690 evaluation module (EVM) uses the TPS53219. The TPS53219 is a small-size,

single buck controller with adaptive on-time D-CAP™ mode control. It provides a fixed 1.1-V output at up

to 25 A from a 12-V input bus. TPS53219EVM-690 also uses the 5-mm x 6-mm TI power block MOSFET

(CSD86350Q5D) for high power density and superior thermal performance.

2 Description

The TPS53219EVM-690 is designed to use a regulated 12-V bus to produce a regulated 1.1-V output at

up to 25 A of load current. The TPS53219EVM-690 is designed to demonstrate the TPS53219 in a typical

low-voltage application while providing test points to evaluate the performance of the TPS53219.

2.1 Typical Applications

• Point of load systems

• Storage computer

• Server computer

• Multifunction printer

• Embedded computing

2.2 Features

The TPS53219EVM-690 features:

• 25-Adc, steady-state output current

• Support prebias output voltage start-up

• High efficiency and high power density by using TI power block MOSFET

• J1 for selectable switching frequency setting

• J2 for selectable internal voltage servo soft-start

• J3 for enable function

• J6 for auto-skip and forced CCM selection

• Convenient test points for probing critical waveforms

3 Electrical Performance Specifications

Table 1. TPS53219EVM-690 Electrical Performance Specifications

PARAMETER TEST CONDITIONS MIN TYP UNITS

INPUT CHARACTERISTICS

Voltage range VIN 8 12 14 V

Maximum input current VIN = 8 V, Io = 25 A 4 A

No load input current Vin = 14 V, Io = 0 A with auto-skip mode 1 mA

OUTPUT CHARACTERISTICS

Output voltage VOUT 1.1 V

Output voltage regulation Line regulation(Vin = 8 V-14 V) 0.5%

Load regulation(Vin = 12 V, Io = 0 A-25 A) 0.5%

Output voltage ripple Vin = 12 V, Io = 25 A 25 mVpp

Output load current 0 25 A

Output over current 35 A

SYSTEMS CHARACTERISTICS

Switching frequency 300 kHz

Peak efficiency Vin = 12 V, 1.1 V/10 A 90.90%

Full-load efficiency Vin = 12 V, 1.1 V/25 A 88.59%

Operating temperature 25 ºC

SLVU431–January 2011 Using the TPS53219EVM-690 Wide-Input Voltage, Eco-mode™, Single,

Synchronous, Step-Down Controller

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