Texas Instruments TPS6236 EVM-655 Series, Руководство пользователя

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Introduction
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1 Introduction
1.1 Requirements
To operate this EVM, connect and properly configure the following components:
A personal computer (PC) with a USB port is required to operate this EVM. The TPS6236x interface
software runs on the PC and communicates with the EVM via the PC
’ s USB port. Commands can be
sent to the internal registers of the TPS6236x through the USB port. The software has been tested with
the PC requirements listed below. It may work with other operating systems and configurations, but
this has not been verified.
Personal Computer Requirements
• Windows XP ™ operating system
• .NET 2.0 or higher
• USB port
•
10 MB of free hard disk space
• 512 MB of RAM
USB-TO-GPIO Adapter
The USB-TO-GPIO adapter is the link that allows the PC and the EVM to communicate. One end of
the USB-TO-GPIO adapter connects to the PC with the supplied USB cable. The other end of the
USB-TO-GPIO adapter connects to the EVM with the supplied ribbon cable.
When a command is written to the EVM, the interface program running on the PC sends the
commands to the PC USB port. The USB-TO-GPIO adapter receives the USB command, converts the
signal to an I
2
C protocol, and sends the I
2
C signal to the TPS6236x EVM board.
Software
Texas Instruments provides software to assist in evaluating this EVM. This software can be
downloaded from the TPS6236xEVM-655 Product Page, located at:
http://focus.ti.com/docs/toolsw/folders/print/tps62360evm-655.html .
Printed-Circuit Board Assembly
The board contains the either the TPS62360, TPS62361B, TPS62362, or TPS62365 IC and the
required external components to evaluate it as a processor power supply solution.
1.2 Performance Specification Summary
A summary of the performance specifications is provided in Table 1 . Specifications are given for an input
voltage of 3.6V and an output voltage of 1.4V, unless otherwise specified. The TPS6236x is designed and
tested for V
IN
= 2.5V to 5.5V. The ambient temperature is 25 ° C for all measurements, unless otherwise
noted.
Table 1. Performance Specification Summary
SPECIFICATION TEST CONDITIONS MIN TYP MAX UNIT
V
IN
voltage range 2.5 3.6 5.5 V
Output voltage set point - TPS62360/2 Programmable in 10 mV steps 0.77 1.4 V
Output voltage set point - TPS62361B/5 Programmable in 10 mV steps 0.5 1.77 V
Output current range - TPS62360, TPS6361B, TPS62362 0 3 A
Output current range - TPS62365 0 3.5 A
Line regulation I
OUT
= 1.5A, V
OUT
= 1.4V ± 0.1%
Load regulation V
IN
= 3.6V, V
OUT
= 1.4V ± 0.15%
Voltage change 40 mV
I
OUT
= 1A to 2A
Recovery time 10 μ s
Load transient response
Voltage change 45 mV
I
OUT
= 2A to 1A
Recovery time 8 μ s
Input ripple voltage V
IN
= 3.6V, V
OUT
= 1.4V, I
OUT
= 3A 120 mV
PP
Output ripple voltage V
IN
= 3.6V, V
OUT
= 1.4V, I
OUT
= 3A 10 mV
PP
2 TPS6236xEVM-655 SLVU425A – April 2011 – Revised July 2011
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