Datasheet

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Description

1 Description

The TPS53311EVM-561 is designed to use a regulated 3.3-V or 5-V bus to produce outputs at up to 3 A

of load current. The output is 1.5-V master and 1.2-V slave. The TPS53311EVM-561 is designed to

demonstrate the TPS53311 in a typical low-voltage application while providing a number of test points to

evaluate the performance of the TPS53311.

1.1 Typical Applications

• Servers and notebook/netbook computers

• Multifunction printers (MFP)

• Embedded PCs, POS terminals

• Switches, routers

• Low-voltage, point-of-load converters

• Any ENERGY STAR/ 80 PLUS™ low-voltage rail

1.2 Features

The TPS53311EVM-561 features:

• 1.5-V master and 1.2-V slave outputs

• 3-Adc, steady-state current

• 1.1-MHz switching frequency

• J1: Selectable 3.3-V or 5-V input voltage

• J2, J7: Selectable FCCM, DE, or HEF mode

• J5: Selectable master and slave interleaved operation

• J4 and J9 for master and slave enable function

• Loop gain measurement

• Convenient test points for probing critical waveforms

• Four-layer PCB with 2-oz copper on the outside layer

Eco-mode is a trademark of Texas Instruments.

80 PLUS is a trademark of Ecos Consulting.

SLUU428A–July 2010–Revised November 2010 Using the TPS53311EVM-561, a 3-A Eco-mode™ Integrated Switcher With

Master-Slave

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