TPS53219 Buck Controller Evaluation Module User's Guide

Trademarks

D-CAP is a trademark of Texas Instruments.

All trademarks are the property of their respective owners.

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. The device provides a fixed 1.1-V output at up to 25 A from a 12-V input bus. The TPS53219EVM-690 also uses the 5-mm × 6-mm TI power block MOSFET (CSD86350Q5D) for high power density and superior thermal performance.

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-A_DC, 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

2 Electrical Performance Specifications

Table 2-1 TPS53219EVM-690 Electrical Performance Specifications

PARAMETER	TEST CONDITIONS	MIN	TYP	MAX	UNITS
INPUT CHARACTERISTICS
Voltage range	V_IN	8	12	14	V
Maximum input current	V_IN = 8 V, I_O = 25 A		4		A
No load input current	V_IN = 14 V, I_O = 0 A with auto-skip mode		1		mA
OUTPUT CHARACTERISTICS
Output voltage, V_OUT			1.1		V
Output voltage regulation	Line regulation (V_IN = 8 V to 14 V)		0.5%
	Load regulation (V_IN = 12 V, I_O = 0 A to 25 A)		0.5%
Output voltage ripple	V_IN = 12 V, I_O = 25 A		25		mVpp
Output load current		0		25	A
Output over current			35		A
SYSTEMS CHARACTERISTICS
Switching frequency			300		kHz
Peak efficiency	V_IN = 12 V, 1.1 V/10 A		90.90%
Full-load efficiency	V_IN = 12 V, 1.1 V/25 A		88.59%
Operating temperature			25		°C

Note: Jumpers set to default locations. See Section 5 of this user’s guide.